2026-09-13T19:51:03.802467Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="compile_runtime"}: package build phase finished phase="compile_runtime" elapsed_ms=0 success=true 2026-09-13T19:51:03.863546Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: migrating legacy cast choices; cleared obsolete search visits 2026-09-13T19:51:03.863580Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: loaded mid-plan search state path=artifacts/full-qk-20260913/bs2-k-seed.json attempts=0 2026-09-13T19:51:04.927264Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: wrote planner memory profile path=artifacts/full-qk-20260913/bs2-k/memory/baseline-598553-0000.json scope="baseline" peak_step=69 effective_peak_bytes=514680 2026-09-13T19:51:21.360129Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: screened exchange table geometry expansion_ms=13817 expansion_and_footprint_ms=16432 estimated_row_bytes=122464 heuristic_row_bytes=349372 geometry_fragments_per_tile=12734 fragment_limit=16384 2026-09-13T19:51:21.499192Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: eliminated unread FP8 cast input padding clears removed=2768 2026-09-13T19:51:22.202261Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=44 transfers=1294 maximum_identical_destinations=1 2026-09-13T19:51:22.202298Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=44 initial_horizon=471 selected_horizon=471 endpoint_lower_bound=256 lower_bound_gap=215 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.202997Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=17 transfers=2187 maximum_identical_destinations=1 2026-09-13T19:51:22.203026Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=17 initial_horizon=1895 selected_horizon=1895 endpoint_lower_bound=1728 lower_bound_gap=167 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.205794Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=44 tile=866 row_words=10 horizon=471 2026-09-13T19:51:22.205808Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=17 tile=728 row_words=9 horizon=1895 2026-09-13T19:51:22.214549Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: compared ordinary and paired exchange schedules phase=54 candidates=36 ordinary_horizon=1264 paired_horizon=2915 use_paired=false 2026-09-13T19:51:22.217897Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=45 transfers=1224 maximum_identical_destinations=1 2026-09-13T19:51:22.217915Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=45 initial_horizon=646 selected_horizon=646 endpoint_lower_bound=544 lower_bound_gap=102 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.219815Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=45 tile=13 row_words=23 horizon=646 2026-09-13T19:51:22.233386Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=55 transfers=1294 maximum_identical_destinations=1 2026-09-13T19:51:22.233411Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=55 initial_horizon=471 selected_horizon=471 endpoint_lower_bound=256 lower_bound_gap=215 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.236738Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=55 tile=866 row_words=10 horizon=471 2026-09-13T19:51:22.247143Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=4 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:51:22.247176Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=4 initial_horizon=3571 selected_horizon=3571 endpoint_lower_bound=3456 lower_bound_gap=115 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.248153Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=56 transfers=1224 maximum_identical_destinations=1 2026-09-13T19:51:22.248173Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=56 initial_horizon=646 selected_horizon=646 endpoint_lower_bound=544 lower_bound_gap=102 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.250058Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=56 tile=13 row_words=23 horizon=646 2026-09-13T19:51:22.253293Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=4 tile=1055 row_words=82 horizon=3571 2026-09-13T19:51:22.253940Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=8 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:51:22.253969Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=8 initial_horizon=5150 selected_horizon=5150 endpoint_lower_bound=5088 lower_bound_gap=62 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.260403Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=8 tile=1172 row_words=112 horizon=5150 2026-09-13T19:51:22.271304Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=50 transfers=1440 maximum_identical_destinations=1 2026-09-13T19:51:22.271324Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=50 initial_horizon=448 selected_horizon=448 endpoint_lower_bound=360 lower_bound_gap=88 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.273423Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=50 tile=29 row_words=51 horizon=448 2026-09-13T19:51:22.286265Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: compared ordinary and paired exchange schedules phase=60 candidates=8 ordinary_horizon=73 paired_horizon=134 use_paired=false 2026-09-13T19:51:22.314694Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=5 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:51:22.314731Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=5 initial_horizon=3437 selected_horizon=3437 endpoint_lower_bound=3360 lower_bound_gap=77 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.321147Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=5 tile=1089 row_words=76 horizon=3437 2026-09-13T19:51:22.325672Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=9 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:51:22.325704Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=9 initial_horizon=5741 selected_horizon=5741 endpoint_lower_bound=5664 lower_bound_gap=77 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.332663Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=9 tile=946 row_words=132 horizon=5741 2026-09-13T19:51:22.381607Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=35 transfers=17040 maximum_identical_destinations=1 2026-09-13T19:51:22.381648Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=35 initial_horizon=9228 selected_horizon=9228 endpoint_lower_bound=7296 lower_bound_gap=1932 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.396525Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: compared ordinary and paired exchange schedules phase=61 candidates=72 ordinary_horizon=261 paired_horizon=1391 use_paired=false 2026-09-13T19:51:22.398571Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=35 tile=1435 row_words=74 horizon=9228 2026-09-13T19:51:22.435246Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=6 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:51:22.435279Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=6 initial_horizon=4007 selected_horizon=4007 endpoint_lower_bound=3936 lower_bound_gap=71 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.442735Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=6 tile=875 row_words=88 horizon=4007 2026-09-13T19:51:22.494677Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=62 transfers=9654 maximum_identical_destinations=1 2026-09-13T19:51:22.494711Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=62 initial_horizon=1690 selected_horizon=1690 endpoint_lower_bound=1280 lower_bound_gap=410 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.504934Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=62 tile=943 row_words=46 horizon=1690 2026-09-13T19:51:22.506636Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=7 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:51:22.506659Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=7 initial_horizon=4579 selected_horizon=4579 endpoint_lower_bound=4512 lower_bound_gap=67 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.513246Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=7 tile=1149 row_words=101 horizon=4579 2026-09-13T19:51:22.518634Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=63 transfers=1288 maximum_identical_destinations=1 2026-09-13T19:51:22.518656Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=63 initial_horizon=550 selected_horizon=550 endpoint_lower_bound=448 lower_bound_gap=102 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.520847Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=63 tile=171 row_words=13 horizon=550 2026-09-13T19:51:22.545704Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=64 transfers=2207 maximum_identical_destinations=1 2026-09-13T19:51:22.545729Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=64 initial_horizon=207 selected_horizon=207 endpoint_lower_bound=64 lower_bound_gap=143 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.549378Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=64 tile=1116 row_words=45 horizon=207 2026-09-13T19:51:22.576229Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=2 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:51:22.576262Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=2 initial_horizon=4720 selected_horizon=4720 endpoint_lower_bound=4608 lower_bound_gap=112 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.582800Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=2 tile=1247 row_words=106 horizon=4720 2026-09-13T19:51:22.583855Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=65 transfers=1474 maximum_identical_destinations=1 2026-09-13T19:51:22.583878Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=65 initial_horizon=427 selected_horizon=427 endpoint_lower_bound=270 lower_bound_gap=157 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.586993Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=65 tile=15 row_words=142 horizon=427 2026-09-13T19:51:22.623969Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=49 transfers=24031 maximum_identical_destinations=1 2026-09-13T19:51:22.623999Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=49 initial_horizon=7992 selected_horizon=7992 endpoint_lower_bound=6756 lower_bound_gap=1236 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.626347Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: compared ordinary and paired exchange schedules phase=66 candidates=60 ordinary_horizon=690 paired_horizon=886 use_paired=false 2026-09-13T19:51:22.642715Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=49 tile=101 row_words=125 horizon=7992 2026-09-13T19:51:22.645185Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=3 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:51:22.645226Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=3 initial_horizon=4150 selected_horizon=4150 endpoint_lower_bound=4032 lower_bound_gap=118 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.651982Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=3 tile=1267 row_words=94 horizon=4150 2026-09-13T19:51:22.663754Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=67 transfers=2878 maximum_identical_destinations=1 2026-09-13T19:51:22.663788Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=67 initial_horizon=1641 selected_horizon=1641 endpoint_lower_bound=1536 lower_bound_gap=105 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.669747Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=67 tile=1221 row_words=20 horizon=1641 2026-09-13T19:51:22.684271Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=68 transfers=1408 maximum_identical_destinations=1 2026-09-13T19:51:22.684291Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=68 initial_horizon=1472 selected_horizon=1472 endpoint_lower_bound=1408 lower_bound_gap=64 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.686428Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=68 tile=13 row_words=28 horizon=1472 2026-09-13T19:51:22.711998Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=1 transfers=9792 maximum_identical_destinations=1 2026-09-13T19:51:22.712023Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=1 initial_horizon=5395 selected_horizon=5395 endpoint_lower_bound=5280 lower_bound_gap=115 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.719350Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=1 tile=981 row_words=124 horizon=5395 2026-09-13T19:51:22.741446Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=12 transfers=2193 maximum_identical_destinations=1 2026-09-13T19:51:22.741469Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=12 initial_horizon=702 selected_horizon=702 endpoint_lower_bound=576 lower_bound_gap=126 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:22.745067Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=12 tile=622 row_words=15 horizon=702 2026-09-13T19:51:22.975825Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: compared ordinary and paired exchange schedules phase=38 candidates=18 ordinary_horizon=1897 paired_horizon=1708 use_paired=false 2026-09-13T19:51:22.998409Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: compared ordinary and paired exchange schedules phase=13 candidates=18 ordinary_horizon=1996 paired_horizon=1947 use_paired=false 2026-09-13T19:51:24.142677Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=10 transfers=104868 maximum_identical_destinations=1 2026-09-13T19:51:24.142732Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=10 initial_horizon=1396 selected_horizon=1396 endpoint_lower_bound=1152 lower_bound_gap=244 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:24.217830Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=10 tile=572 row_words=350 horizon=1396 2026-09-13T19:51:25.139464Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=18 transfers=116560 maximum_identical_destinations=1 2026-09-13T19:51:25.139509Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=18 initial_horizon=2577 selected_horizon=2577 endpoint_lower_bound=1152 lower_bound_gap=1425 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:25.237388Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=18 tile=55 row_words=411 horizon=2577 2026-09-13T19:51:28.509560Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: compared ordinary and paired exchange schedules phase=26 candidates=52416 ordinary_horizon=15721 paired_horizon=22574 use_paired=false 2026-09-13T19:51:28.606190Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=19 transfers=69888 maximum_identical_destinations=1 2026-09-13T19:51:28.606255Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=19 initial_horizon=3171 selected_horizon=3171 endpoint_lower_bound=1152 lower_bound_gap=2019 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:28.620056Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=26 transfers=54216 maximum_identical_destinations=1 2026-09-13T19:51:28.620088Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=26 initial_horizon=15721 selected_horizon=15721 endpoint_lower_bound=14400 lower_bound_gap=1321 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:28.669588Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=19 tile=391 row_words=384 horizon=3171 2026-09-13T19:51:28.693859Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=26 tile=380 row_words=360 horizon=15721 2026-09-13T19:51:28.811593Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: compared ordinary and paired exchange schedules phase=36 candidates=9 ordinary_horizon=1584 paired_horizon=1634 use_paired=false 2026-09-13T19:51:28.910934Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=36 transfers=104926 maximum_identical_destinations=1 2026-09-13T19:51:28.910973Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=36 initial_horizon=1584 selected_horizon=1584 endpoint_lower_bound=1152 lower_bound_gap=432 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:28.918507Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=27 transfers=16836 maximum_identical_destinations=1 2026-09-13T19:51:28.918541Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=27 initial_horizon=8173 selected_horizon=8173 endpoint_lower_bound=6912 lower_bound_gap=1261 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:28.942816Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=27 tile=1242 row_words=70 horizon=8173 2026-09-13T19:51:28.998752Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=36 tile=1204 row_words=340 horizon=1584 2026-09-13T19:51:29.089629Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=40 transfers=8580 maximum_identical_destinations=1 2026-09-13T19:51:29.089682Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=40 initial_horizon=9578 selected_horizon=9578 endpoint_lower_bound=7104 lower_bound_gap=2474 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:29.098870Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=40 tile=495 row_words=42 horizon=9578 2026-09-13T19:51:29.362987Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: compared ordinary and paired exchange schedules phase=30 candidates=18 ordinary_horizon=1990 paired_horizon=1806 use_paired=false 2026-09-13T19:51:29.665633Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=41 transfers=209796 maximum_identical_destinations=1 2026-09-13T19:51:29.665682Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=41 initial_horizon=2759 selected_horizon=2759 endpoint_lower_bound=2304 lower_bound_gap=455 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:29.879822Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=41 tile=58 row_words=929 horizon=2759 2026-09-13T19:51:30.067156Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: compared ordinary and paired exchange schedules phase=43 candidates=144 ordinary_horizon=193 paired_horizon=444 use_paired=false 2026-09-13T19:51:30.638245Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=20 transfers=29728 maximum_identical_destinations=1 2026-09-13T19:51:30.638283Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=20 initial_horizon=5889 selected_horizon=5889 endpoint_lower_bound=4392 lower_bound_gap=1497 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:30.676871Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=20 tile=373 row_words=385 horizon=5889 2026-09-13T19:51:30.679731Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=32 transfers=41964 maximum_identical_destinations=1 2026-09-13T19:51:30.679765Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=32 initial_horizon=6348 selected_horizon=6348 endpoint_lower_bound=5120 lower_bound_gap=1228 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:30.714602Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=32 tile=307 row_words=127 horizon=6348 2026-09-13T19:51:31.128614Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: compared ordinary and paired exchange schedules phase=0 candidates=27702 ordinary_horizon=10407 paired_horizon=35006 use_paired=false 2026-09-13T19:51:31.351623Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=0 transfers=29070 maximum_identical_destinations=1 2026-09-13T19:51:31.351657Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=0 initial_horizon=10407 selected_horizon=10407 endpoint_lower_bound=4672 lower_bound_gap=5735 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:31.456601Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=0 tile=586 row_words=1236 horizon=10407 2026-09-13T19:51:31.516471Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=15 transfers=5710 maximum_identical_destinations=1 2026-09-13T19:51:31.516507Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=15 initial_horizon=9580 selected_horizon=9580 endpoint_lower_bound=9472 lower_bound_gap=108 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:31.523047Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=15 tile=1141 row_words=34 horizon=9580 2026-09-13T19:51:32.999604Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=48 transfers=232998 maximum_identical_destinations=1 2026-09-13T19:51:32.999652Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=48 initial_horizon=7061 selected_horizon=7061 endpoint_lower_bound=3328 lower_bound_gap=3733 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:33.307592Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=48 tile=259 row_words=1570 horizon=7061 2026-09-13T19:51:33.330174Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: compared ordinary and paired exchange schedules phase=28 candidates=9 ordinary_horizon=1564 paired_horizon=1568 use_paired=false 2026-09-13T19:51:33.452561Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=28 transfers=104913 maximum_identical_destinations=1 2026-09-13T19:51:33.452594Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=28 initial_horizon=1564 selected_horizon=1564 endpoint_lower_bound=1152 lower_bound_gap=412 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:33.543840Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=28 tile=527 row_words=232 horizon=1564 2026-09-13T19:51:34.455308Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=23 transfers=39552 maximum_identical_destinations=1 2026-09-13T19:51:34.455348Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=23 initial_horizon=7150 selected_horizon=7150 endpoint_lower_bound=5632 lower_bound_gap=1518 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:34.496931Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=23 tile=610 row_words=170 horizon=7150 2026-09-13T19:51:34.754035Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=21 transfers=69984 maximum_identical_destinations=1 2026-09-13T19:51:34.754073Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=21 initial_horizon=3257 selected_horizon=3257 endpoint_lower_bound=2688 lower_bound_gap=569 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:34.853629Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=21 tile=308 row_words=957 horizon=3257 2026-09-13T19:51:34.871438Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=24 transfers=44640 maximum_identical_destinations=1 2026-09-13T19:51:34.871485Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=24 initial_horizon=4884 selected_horizon=4884 endpoint_lower_bound=4160 lower_bound_gap=724 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:34.906110Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=24 tile=1033 row_words=137 horizon=4884 2026-09-13T19:51:35.421873Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=25 transfers=23312 maximum_identical_destinations=1 2026-09-13T19:51:35.421915Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=25 initial_horizon=1285 selected_horizon=1285 endpoint_lower_bound=1152 lower_bound_gap=133 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:35.440907Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=25 tile=255 row_words=120 horizon=1285 2026-09-13T19:51:35.947120Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=22 transfers=66336 maximum_identical_destinations=1 2026-09-13T19:51:35.947164Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=22 initial_horizon=11815 selected_horizon=11815 endpoint_lower_bound=6832 lower_bound_gap=4983 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:36.005317Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=22 tile=247 row_words=349 horizon=11815 2026-09-13T19:51:47.823539Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: compared ordinary and paired exchange schedules phase=39 candidates=52488 ordinary_horizon=17917 paired_horizon=63664 use_paired=false 2026-09-13T19:51:48.430041Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=39 transfers=54216 maximum_identical_destinations=1 2026-09-13T19:51:48.430097Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=39 initial_horizon=17917 selected_horizon=17917 endpoint_lower_bound=11712 lower_bound_gap=6205 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:48.712732Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=39 tile=639 row_words=2204 horizon=17917 2026-09-13T19:51:49.822101Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: compared ordinary and paired exchange schedules phase=33 candidates=34 ordinary_horizon=4870 paired_horizon=4967 use_paired=false 2026-09-13T19:51:50.487487Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=33 transfers=391962 maximum_identical_destinations=1 2026-09-13T19:51:50.487526Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=33 initial_horizon=4870 selected_horizon=4870 endpoint_lower_bound=4304 lower_bound_gap=566 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:50.661775Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: compared ordinary and paired exchange schedules phase=16 candidates=27 ordinary_horizon=4581 paired_horizon=4069 use_paired=false 2026-09-13T19:51:51.015522Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=33 tile=429 row_words=752 horizon=4870 2026-09-13T19:51:51.039218Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=16 transfers=314748 maximum_identical_destinations=1 2026-09-13T19:51:51.039254Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=16 initial_horizon=4581 selected_horizon=4581 endpoint_lower_bound=3456 lower_bound_gap=1125 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:51.353733Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=16 tile=499 row_words=904 horizon=4581 2026-09-13T19:51:55.133883Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: compared ordinary and paired exchange schedules phase=14 candidates=52488 ordinary_horizon=24061 paired_horizon=81530 use_paired=false 2026-09-13T19:51:56.015126Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=14 transfers=54216 maximum_identical_destinations=1 2026-09-13T19:51:56.015165Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=14 initial_horizon=24061 selected_horizon=24061 endpoint_lower_bound=17568 lower_bound_gap=6493 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:56.392601Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=14 tile=472 row_words=2997 horizon=24061 2026-09-13T19:51:57.573864Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: compared ordinary and paired exchange schedules phase=34 candidates=196830 ordinary_horizon=32920 paired_horizon=78376 use_paired=false 2026-09-13T19:51:58.280906Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=34 transfers=198990 maximum_identical_destinations=1 2026-09-13T19:51:58.280949Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=34 initial_horizon=32920 selected_horizon=32920 endpoint_lower_bound=25728 lower_bound_gap=7192 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:51:58.665710Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=34 tile=304 row_words=2263 horizon=32920 2026-09-13T19:52:21.702111Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: compared ordinary and paired exchange schedules phase=31 candidates=52488 ordinary_horizon=26250 paired_horizon=113749 use_paired=false 2026-09-13T19:52:22.753091Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: prepared large physical exchange phase phase=31 transfers=62172 maximum_identical_destinations=1 2026-09-13T19:52:22.753137Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: optimized physical exchange schedule phase=31 initial_horizon=26250 selected_horizon=26250 endpoint_lower_bound=23424 lower_bound_gap=2826 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:23.186762Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: finished large physical exchange phase phase=31 tile=648 row_words=4436 horizon=26250 2026-09-13T19:52:23.320436Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="plan_kernels"}: package build phase finished phase="plan_kernels" elapsed_ms=75 success=true 2026-09-13T19:52:23.324432Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="compile_kernels"}: package build phase finished phase="compile_kernels" elapsed_ms=3 success=true 2026-09-13T19:52:23.329946Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="link_runtime"}: package build phase finished phase="link_runtime" elapsed_ms=0 success=true 2026-09-13T19:52:25.047026Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: exchange table and repeat patch storage exchange_table_bytes=86896 maximum_uncompressed_repeat_patch_bytes=0 maximum_elided_arithmetic_patch_bytes=0 2026-09-13T19:52:29.164786Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="size_tile_code"}: package build phase finished phase="size_tile_code" elapsed_ms=415 success=true 2026-09-13T19:52:29.164836Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: placing generated tile programs linked_end=386000 host_code_base=386000 host_code_bytes=9124 generated_code_bytes=11892 exchange_table_bytes=86896 executable_ranges=[(377716, 377720), (378604, 378608), (382028, 382032), (384044, 384048), (385020, 385024), (395192, 524288)] 2026-09-13T19:52:29.164871Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: allocated package support memory linked_end=386000 profile_bytes=844 exchange_table_bytes=86896 host_code_bytes=9124 host_data_bytes=6292 generated_code_bytes=11892 code_address=395192 available_ranges=[(327680, 360448), (368500, 376832), (507904, 949168)] 2026-09-13T19:52:30.110429Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="place_storage"}: package build phase finished phase="place_storage" elapsed_ms=945 success=true 2026-09-13T19:52:30.153261Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=53 2026-09-13T19:52:30.165431Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=54 2026-09-13T19:52:30.175035Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=17 2026-09-13T19:52:30.176066Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=17 transfers=2187 maximum_identical_destinations=1 2026-09-13T19:52:30.176093Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=17 initial_horizon=1895 selected_horizon=1895 endpoint_lower_bound=1728 lower_bound_gap=167 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:52:30.180046Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=17 tile=728 row_words=9 horizon=1895 2026-09-13T19:52:30.185241Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=55 transfers=1294 maximum_identical_destinations=1 2026-09-13T19:52:30.185256Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=55 initial_horizon=846 selected_horizon=846 endpoint_lower_bound=256 lower_bound_gap=590 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:30.188104Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=55 tile=866 row_words=10 horizon=846 2026-09-13T19:52:30.195156Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=56 2026-09-13T19:52:30.195489Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=56 transfers=1224 maximum_identical_destinations=1 2026-09-13T19:52:30.195499Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=56 initial_horizon=646 selected_horizon=646 endpoint_lower_bound=544 lower_bound_gap=102 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:52:30.197270Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=56 tile=13 row_words=23 horizon=646 2026-09-13T19:52:30.217563Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=58 2026-09-13T19:52:30.219597Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=59 2026-09-13T19:52:30.220407Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=60 2026-09-13T19:52:30.259327Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=61 2026-09-13T19:52:30.288270Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=8 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:52:30.288323Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=8 initial_horizon=5150 selected_horizon=5150 endpoint_lower_bound=5088 lower_bound_gap=62 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:30.296626Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=8 tile=1172 row_words=112 horizon=5150 2026-09-13T19:52:30.314042Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=62 2026-09-13T19:52:30.317742Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=62 transfers=9654 maximum_identical_destinations=1 2026-09-13T19:52:30.317756Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=62 initial_horizon=1690 selected_horizon=1690 endpoint_lower_bound=1280 lower_bound_gap=410 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:52:30.326148Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=62 tile=943 row_words=46 horizon=1690 2026-09-13T19:52:30.335062Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=63 2026-09-13T19:52:30.335414Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=63 transfers=1288 maximum_identical_destinations=1 2026-09-13T19:52:30.335423Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=63 initial_horizon=550 selected_horizon=550 endpoint_lower_bound=448 lower_bound_gap=102 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:52:30.337491Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=63 tile=171 row_words=13 horizon=550 2026-09-13T19:52:30.367437Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=64 transfers=2207 maximum_identical_destinations=1 2026-09-13T19:52:30.367465Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=64 initial_horizon=207 selected_horizon=207 endpoint_lower_bound=64 lower_bound_gap=143 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:30.370148Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=64 tile=1116 row_words=45 horizon=207 2026-09-13T19:52:30.413405Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=65 transfers=1474 maximum_identical_destinations=1 2026-09-13T19:52:30.413433Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=65 initial_horizon=427 selected_horizon=427 endpoint_lower_bound=270 lower_bound_gap=157 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:30.415921Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=65 tile=15 row_words=142 horizon=427 2026-09-13T19:52:30.442795Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=9 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:52:30.442824Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=9 initial_horizon=5741 selected_horizon=5741 endpoint_lower_bound=5664 lower_bound_gap=77 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:30.451613Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=9 tile=946 row_words=132 horizon=5741 2026-09-13T19:52:30.456744Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: compared ordinary and paired exchange schedules phase=66 candidates=60 ordinary_horizon=690 paired_horizon=886 use_paired=false 2026-09-13T19:52:30.479089Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=67 2026-09-13T19:52:30.479875Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=67 transfers=2878 maximum_identical_destinations=1 2026-09-13T19:52:30.479887Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=67 initial_horizon=1641 selected_horizon=1641 endpoint_lower_bound=1536 lower_bound_gap=105 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:52:30.483754Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=67 tile=1221 row_words=20 horizon=1641 2026-09-13T19:52:30.491409Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=68 2026-09-13T19:52:30.491795Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=68 transfers=1408 maximum_identical_destinations=1 2026-09-13T19:52:30.491802Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=68 initial_horizon=1472 selected_horizon=1472 endpoint_lower_bound=1408 lower_bound_gap=64 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:52:30.493734Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=68 tile=13 row_words=28 horizon=1472 2026-09-13T19:52:30.496630Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=35 transfers=17040 maximum_identical_destinations=1 2026-09-13T19:52:30.496663Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=35 initial_horizon=9228 selected_horizon=9228 endpoint_lower_bound=7296 lower_bound_gap=1932 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:30.512384Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=70 2026-09-13T19:52:30.516383Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=35 tile=1435 row_words=74 horizon=9228 2026-09-13T19:52:31.676065Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=23 transfers=39552 maximum_identical_destinations=1 2026-09-13T19:52:31.676103Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=23 initial_horizon=8538 selected_horizon=8538 endpoint_lower_bound=5632 lower_bound_gap=2906 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:31.710129Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=23 tile=621 row_words=176 horizon=8538 2026-09-13T19:52:32.139656Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=24 transfers=44640 maximum_identical_destinations=1 2026-09-13T19:52:32.139695Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=24 initial_horizon=4884 selected_horizon=4884 endpoint_lower_bound=4160 lower_bound_gap=724 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:32.155400Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=10 2026-09-13T19:52:32.163616Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=24 tile=1033 row_words=137 horizon=4884 2026-09-13T19:52:32.221453Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=10 transfers=104868 maximum_identical_destinations=1 2026-09-13T19:52:32.221497Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=10 initial_horizon=1396 selected_horizon=1396 endpoint_lower_bound=1152 lower_bound_gap=244 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:52:32.304525Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=10 tile=572 row_words=350 horizon=1396 2026-09-13T19:52:32.345350Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=11 2026-09-13T19:52:32.367523Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=12 2026-09-13T19:52:32.368388Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=12 transfers=2193 maximum_identical_destinations=1 2026-09-13T19:52:32.368404Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=12 initial_horizon=702 selected_horizon=702 endpoint_lower_bound=576 lower_bound_gap=126 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:52:32.372870Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=12 tile=622 row_words=15 horizon=702 2026-09-13T19:52:32.531483Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=19 2026-09-13T19:52:32.571279Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=19 transfers=69888 maximum_identical_destinations=1 2026-09-13T19:52:32.571308Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=19 initial_horizon=3171 selected_horizon=3171 endpoint_lower_bound=1152 lower_bound_gap=2019 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:52:32.646042Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=19 tile=391 row_words=384 horizon=3171 2026-09-13T19:52:32.779609Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: compared ordinary and paired exchange schedules phase=13 candidates=18 ordinary_horizon=1985 paired_horizon=1936 use_paired=false 2026-09-13T19:52:32.875954Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=25 transfers=23312 maximum_identical_destinations=1 2026-09-13T19:52:32.875993Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=25 initial_horizon=2781 selected_horizon=2781 endpoint_lower_bound=1152 lower_bound_gap=1629 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:32.889705Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=25 tile=209 row_words=138 horizon=2781 2026-09-13T19:52:33.168031Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: compared ordinary and paired exchange schedules phase=30 candidates=18 ordinary_horizon=1986 paired_horizon=1803 use_paired=false 2026-09-13T19:52:33.875843Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=21 2026-09-13T19:52:33.969674Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=21 transfers=69984 maximum_identical_destinations=1 2026-09-13T19:52:33.969707Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=21 initial_horizon=3257 selected_horizon=3257 endpoint_lower_bound=2688 lower_bound_gap=569 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:52:34.089567Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=21 tile=308 row_words=957 horizon=3257 2026-09-13T19:52:35.343306Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=18 transfers=116560 maximum_identical_destinations=1 2026-09-13T19:52:35.343367Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=18 initial_horizon=2250 selected_horizon=2250 endpoint_lower_bound=1152 lower_bound_gap=1098 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:35.452665Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=18 tile=645 row_words=405 horizon=2250 2026-09-13T19:52:35.498243Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=44 transfers=1294 maximum_identical_destinations=1 2026-09-13T19:52:35.498281Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=44 initial_horizon=837 selected_horizon=837 endpoint_lower_bound=256 lower_bound_gap=581 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:35.502290Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=44 tile=866 row_words=10 horizon=837 2026-09-13T19:52:35.512618Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=45 2026-09-13T19:52:35.513073Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=45 transfers=1224 maximum_identical_destinations=1 2026-09-13T19:52:35.513084Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=45 initial_horizon=646 selected_horizon=646 endpoint_lower_bound=544 lower_bound_gap=102 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:52:35.515530Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=45 tile=13 row_words=23 horizon=646 2026-09-13T19:52:35.543346Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=47 2026-09-13T19:52:35.669222Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=22 transfers=66336 maximum_identical_destinations=1 2026-09-13T19:52:35.669262Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=22 initial_horizon=11075 selected_horizon=11075 endpoint_lower_bound=6832 lower_bound_gap=4243 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:35.715312Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=22 tile=246 row_words=337 horizon=11075 2026-09-13T19:52:35.810938Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=4 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:52:35.810975Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=4 initial_horizon=3571 selected_horizon=3571 endpoint_lower_bound=3456 lower_bound_gap=115 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:35.817143Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=4 tile=1055 row_words=82 horizon=3571 2026-09-13T19:52:35.903579Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=5 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:52:35.903612Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=5 initial_horizon=3437 selected_horizon=3437 endpoint_lower_bound=3360 lower_bound_gap=77 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:35.910009Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=5 tile=1089 row_words=76 horizon=3437 2026-09-13T19:52:36.083712Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=6 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:52:36.083752Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=6 initial_horizon=4007 selected_horizon=4007 endpoint_lower_bound=3936 lower_bound_gap=71 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:36.091288Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=6 tile=875 row_words=88 horizon=4007 2026-09-13T19:52:36.180373Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=7 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:52:36.180421Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=7 initial_horizon=4579 selected_horizon=4579 endpoint_lower_bound=4512 lower_bound_gap=67 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:36.186667Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=7 tile=1149 row_words=101 horizon=4579 2026-09-13T19:52:36.638591Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=20 transfers=29728 maximum_identical_destinations=1 2026-09-13T19:52:36.638634Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=20 initial_horizon=5829 selected_horizon=5829 endpoint_lower_bound=4392 lower_bound_gap=1437 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:36.705529Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=20 tile=266 row_words=385 horizon=5829 2026-09-13T19:52:37.344796Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: compared ordinary and paired exchange schedules phase=26 candidates=52416 ordinary_horizon=20715 paired_horizon=27707 use_paired=false 2026-09-13T19:52:37.468088Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=26 transfers=54216 maximum_identical_destinations=1 2026-09-13T19:52:37.468128Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=26 initial_horizon=20715 selected_horizon=20715 endpoint_lower_bound=14400 lower_bound_gap=6315 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:37.543669Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=26 tile=586 row_words=374 horizon=20715 2026-09-13T19:52:37.718708Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=27 2026-09-13T19:52:37.729152Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=27 transfers=16836 maximum_identical_destinations=1 2026-09-13T19:52:37.729183Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=27 initial_horizon=8173 selected_horizon=8173 endpoint_lower_bound=6912 lower_bound_gap=1261 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:52:37.749473Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=27 tile=1242 row_words=70 horizon=8173 2026-09-13T19:52:38.968062Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=32 transfers=41964 maximum_identical_destinations=1 2026-09-13T19:52:38.968134Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=32 initial_horizon=6348 selected_horizon=6348 endpoint_lower_bound=5120 lower_bound_gap=1228 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:39.007724Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=32 tile=307 row_words=128 horizon=6348 2026-09-13T19:52:40.761846Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: compared ordinary and paired exchange schedules phase=36 candidates=9 ordinary_horizon=1585 paired_horizon=1634 use_paired=false 2026-09-13T19:52:40.798867Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: compared ordinary and paired exchange schedules phase=28 candidates=9 ordinary_horizon=1559 paired_horizon=1568 use_paired=false 2026-09-13T19:52:40.900195Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=28 transfers=104913 maximum_identical_destinations=1 2026-09-13T19:52:40.900242Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=28 initial_horizon=1559 selected_horizon=1559 endpoint_lower_bound=1152 lower_bound_gap=407 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:40.912154Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=36 transfers=104926 maximum_identical_destinations=1 2026-09-13T19:52:40.912223Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=36 initial_horizon=1585 selected_horizon=1585 endpoint_lower_bound=1152 lower_bound_gap=433 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:40.971941Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=28 tile=503 row_words=235 horizon=1559 2026-09-13T19:52:40.995605Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=29 2026-09-13T19:52:41.008713Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=50 2026-09-13T19:52:41.009240Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=50 transfers=1440 maximum_identical_destinations=1 2026-09-13T19:52:41.009254Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=50 initial_horizon=448 selected_horizon=448 endpoint_lower_bound=360 lower_bound_gap=88 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:52:41.011789Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=50 tile=29 row_words=51 horizon=448 2026-09-13T19:52:41.013001Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=51 2026-09-13T19:52:41.014743Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=52 2026-09-13T19:52:41.033889Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=36 tile=1204 row_words=346 horizon=1585 2026-09-13T19:52:41.067267Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=37 2026-09-13T19:52:41.214789Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=38 2026-09-13T19:52:41.947767Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=49 transfers=24031 maximum_identical_destinations=1 2026-09-13T19:52:41.947819Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=49 initial_horizon=8741 selected_horizon=8741 endpoint_lower_bound=6756 lower_bound_gap=1985 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:41.971089Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=49 tile=131 row_words=125 horizon=8741 2026-09-13T19:52:42.092379Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=2 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:52:42.092415Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=2 initial_horizon=4720 selected_horizon=4720 endpoint_lower_bound=4608 lower_bound_gap=112 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:42.100299Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=2 tile=1247 row_words=106 horizon=4720 2026-09-13T19:52:42.219119Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=3 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:52:42.219157Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=3 initial_horizon=4150 selected_horizon=4150 endpoint_lower_bound=4032 lower_bound_gap=118 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:42.226860Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=3 tile=1267 row_words=94 horizon=4150 2026-09-13T19:52:46.667500Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=41 2026-09-13T19:52:46.792374Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=41 transfers=209796 maximum_identical_destinations=1 2026-09-13T19:52:46.792412Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=41 initial_horizon=2759 selected_horizon=2759 endpoint_lower_bound=2304 lower_bound_gap=455 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:52:47.009940Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=41 tile=58 row_words=929 horizon=2759 2026-09-13T19:52:47.094896Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=42 2026-09-13T19:52:47.143234Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=43 2026-09-13T19:52:47.224418Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=40 2026-09-13T19:52:47.228287Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=40 transfers=8580 maximum_identical_destinations=1 2026-09-13T19:52:47.228307Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=40 initial_horizon=9578 selected_horizon=9578 endpoint_lower_bound=7104 lower_bound_gap=2474 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:52:47.239696Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=40 tile=495 row_words=42 horizon=9578 2026-09-13T19:52:47.291524Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=15 2026-09-13T19:52:47.293877Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=15 transfers=5710 maximum_identical_destinations=1 2026-09-13T19:52:47.293894Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=15 initial_horizon=9580 selected_horizon=9580 endpoint_lower_bound=9472 lower_bound_gap=108 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:52:47.304254Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=15 tile=1141 row_words=34 horizon=9580 2026-09-13T19:52:47.714084Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=33 2026-09-13T19:52:47.962449Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=33 transfers=391962 maximum_identical_destinations=1 2026-09-13T19:52:47.962504Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=33 initial_horizon=4870 selected_horizon=4870 endpoint_lower_bound=4304 lower_bound_gap=566 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:52:48.600273Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=33 tile=429 row_words=752 horizon=4870 2026-09-13T19:52:48.761053Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=1 transfers=9792 maximum_identical_destinations=1 2026-09-13T19:52:48.761095Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=1 initial_horizon=5395 selected_horizon=5395 endpoint_lower_bound=5280 lower_bound_gap=115 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:48.767880Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=1 tile=981 row_words=124 horizon=5395 2026-09-13T19:52:52.595459Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: compared ordinary and paired exchange schedules phase=0 candidates=27702 ordinary_horizon=10285 paired_horizon=35019 use_paired=false 2026-09-13T19:52:52.938114Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=0 transfers=29070 maximum_identical_destinations=1 2026-09-13T19:52:52.938162Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=0 initial_horizon=10285 selected_horizon=10285 endpoint_lower_bound=4672 lower_bound_gap=5613 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:53.091019Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=0 tile=538 row_words=1222 horizon=10285 2026-09-13T19:52:53.200727Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=48 transfers=232998 maximum_identical_destinations=1 2026-09-13T19:52:53.200776Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=48 initial_horizon=7420 selected_horizon=7420 endpoint_lower_bound=3328 lower_bound_gap=4092 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:52:53.538367Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=48 tile=284 row_words=1562 horizon=7420 2026-09-13T19:53:10.052722Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: compared ordinary and paired exchange schedules phase=39 candidates=52488 ordinary_horizon=17421 paired_horizon=63677 use_paired=false 2026-09-13T19:53:10.458082Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=39 transfers=54216 maximum_identical_destinations=1 2026-09-13T19:53:10.458117Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=39 initial_horizon=17421 selected_horizon=17421 endpoint_lower_bound=11712 lower_bound_gap=5709 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:53:10.654992Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=39 tile=639 row_words=2200 horizon=17421 2026-09-13T19:53:17.898766Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: compared ordinary and paired exchange schedules phase=34 candidates=196830 ordinary_horizon=29836 paired_horizon=76037 use_paired=false 2026-09-13T19:53:18.634573Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=34 transfers=198990 maximum_identical_destinations=1 2026-09-13T19:53:18.634622Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=34 initial_horizon=29836 selected_horizon=29836 endpoint_lower_bound=25728 lower_bound_gap=4108 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:53:19.055650Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=34 tile=179 row_words=2282 horizon=29836 2026-09-13T19:53:19.496779Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: compared ordinary and paired exchange schedules phase=16 candidates=27 ordinary_horizon=4587 paired_horizon=4069 use_paired=false 2026-09-13T19:53:20.036787Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=16 transfers=314748 maximum_identical_destinations=1 2026-09-13T19:53:20.036831Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=16 initial_horizon=4587 selected_horizon=4587 endpoint_lower_bound=3456 lower_bound_gap=1131 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:53:20.459095Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=16 tile=325 row_words=894 horizon=4587 2026-09-13T19:53:23.923266Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: compared ordinary and paired exchange schedules phase=14 candidates=52488 ordinary_horizon=18404 paired_horizon=75582 use_paired=false 2026-09-13T19:53:24.838627Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=14 transfers=54216 maximum_identical_destinations=1 2026-09-13T19:53:24.838685Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=14 initial_horizon=18404 selected_horizon=18404 endpoint_lower_bound=17568 lower_bound_gap=836 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:53:25.214541Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=14 tile=178 row_words=3020 horizon=18404 2026-09-13T19:53:35.084792Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: compared ordinary and paired exchange schedules phase=31 candidates=52488 ordinary_horizon=24740 paired_horizon=112053 use_paired=false 2026-09-13T19:53:36.517284Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=31 transfers=62172 maximum_identical_destinations=1 2026-09-13T19:53:36.517327Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=31 initial_horizon=24740 selected_horizon=24740 endpoint_lower_bound=23424 lower_bound_gap=1316 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:53:37.160500Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=31 tile=538 row_words=4443 horizon=24740 2026-09-13T19:53:37.228683Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="lower_exchanges"}: package build phase finished phase="lower_exchanges" elapsed_ms=67118 success=true 2026-09-13T19:54:02.836420Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=53 2026-09-13T19:54:02.855525Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=54 2026-09-13T19:54:02.857409Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=57 2026-09-13T19:54:02.860940Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=17 2026-09-13T19:54:02.862251Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=17 transfers=2187 maximum_identical_destinations=1 2026-09-13T19:54:02.862268Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=17 initial_horizon=1895 selected_horizon=1895 endpoint_lower_bound=1728 lower_bound_gap=167 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:02.866993Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=66 2026-09-13T19:54:02.867184Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=17 tile=728 row_words=9 horizon=1895 2026-09-13T19:54:02.872221Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=58 2026-09-13T19:54:02.875595Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=59 2026-09-13T19:54:02.875828Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=55 2026-09-13T19:54:02.876426Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=55 transfers=1294 maximum_identical_destinations=1 2026-09-13T19:54:02.876440Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=55 initial_horizon=846 selected_horizon=846 endpoint_lower_bound=256 lower_bound_gap=590 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:02.876828Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=60 2026-09-13T19:54:02.880925Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=55 tile=866 row_words=10 horizon=846 2026-09-13T19:54:02.891382Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=56 2026-09-13T19:54:02.891878Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=56 transfers=1224 maximum_identical_destinations=1 2026-09-13T19:54:02.891888Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=56 initial_horizon=646 selected_horizon=646 endpoint_lower_bound=544 lower_bound_gap=102 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:02.894417Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=56 tile=13 row_words=23 horizon=646 2026-09-13T19:54:02.906050Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=8 2026-09-13T19:54:02.909873Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=67 2026-09-13T19:54:02.911964Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=67 transfers=2878 maximum_identical_destinations=1 2026-09-13T19:54:02.911971Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=8 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:54:02.911982Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=67 initial_horizon=1641 selected_horizon=1641 endpoint_lower_bound=1536 lower_bound_gap=105 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:02.911993Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=8 initial_horizon=5150 selected_horizon=5150 endpoint_lower_bound=5088 lower_bound_gap=62 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:02.917357Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=64 2026-09-13T19:54:02.918414Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=64 transfers=2207 maximum_identical_destinations=1 2026-09-13T19:54:02.918429Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=64 initial_horizon=207 selected_horizon=207 endpoint_lower_bound=64 lower_bound_gap=143 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:02.920337Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=67 tile=1221 row_words=20 horizon=1641 2026-09-13T19:54:02.920991Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=8 tile=1172 row_words=112 horizon=5150 2026-09-13T19:54:02.921566Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=62 2026-09-13T19:54:02.922739Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=64 tile=1116 row_words=45 horizon=207 2026-09-13T19:54:02.927069Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=62 transfers=9654 maximum_identical_destinations=1 2026-09-13T19:54:02.927092Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=62 initial_horizon=1690 selected_horizon=1690 endpoint_lower_bound=1280 lower_bound_gap=410 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:02.937051Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=68 2026-09-13T19:54:02.937890Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=68 transfers=1408 maximum_identical_destinations=1 2026-09-13T19:54:02.937903Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=68 initial_horizon=1472 selected_horizon=1472 endpoint_lower_bound=1408 lower_bound_gap=64 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:02.940112Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=61 2026-09-13T19:54:02.941176Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=62 tile=943 row_words=46 horizon=1690 2026-09-13T19:54:02.942105Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=68 tile=13 row_words=28 horizon=1472 2026-09-13T19:54:02.949045Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=65 2026-09-13T19:54:02.949745Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=65 transfers=1474 maximum_identical_destinations=1 2026-09-13T19:54:02.949760Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=65 initial_horizon=427 selected_horizon=427 endpoint_lower_bound=270 lower_bound_gap=157 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:02.953868Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=65 tile=15 row_words=142 horizon=427 2026-09-13T19:54:02.955479Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=69 2026-09-13T19:54:02.956036Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=63 2026-09-13T19:54:02.956615Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=63 transfers=1288 maximum_identical_destinations=1 2026-09-13T19:54:02.956630Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=63 initial_horizon=550 selected_horizon=550 endpoint_lower_bound=448 lower_bound_gap=102 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:02.960001Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=63 tile=171 row_words=13 horizon=550 2026-09-13T19:54:02.963101Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=44 2026-09-13T19:54:02.963770Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=44 transfers=1294 maximum_identical_destinations=1 2026-09-13T19:54:02.963790Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=44 initial_horizon=837 selected_horizon=837 endpoint_lower_bound=256 lower_bound_gap=581 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:02.968401Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=44 tile=866 row_words=10 horizon=837 2026-09-13T19:54:02.972795Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=70 2026-09-13T19:54:02.979143Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=45 2026-09-13T19:54:02.979478Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=12 2026-09-13T19:54:02.979673Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=45 transfers=1224 maximum_identical_destinations=1 2026-09-13T19:54:02.979683Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=45 initial_horizon=646 selected_horizon=646 endpoint_lower_bound=544 lower_bound_gap=102 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:02.980398Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=12 transfers=2193 maximum_identical_destinations=1 2026-09-13T19:54:02.980413Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=12 initial_horizon=702 selected_horizon=702 endpoint_lower_bound=576 lower_bound_gap=126 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:02.982335Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=45 tile=13 row_words=23 horizon=646 2026-09-13T19:54:02.984889Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=12 tile=622 row_words=15 horizon=702 2026-09-13T19:54:02.986586Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=9 2026-09-13T19:54:02.991279Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=46 2026-09-13T19:54:02.991725Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=9 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:54:02.991741Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=9 initial_horizon=5741 selected_horizon=5741 endpoint_lower_bound=5664 lower_bound_gap=77 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:03.001299Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=9 tile=946 row_words=132 horizon=5741 2026-09-13T19:54:03.003099Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=47 2026-09-13T19:54:03.013671Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=35 2026-09-13T19:54:03.025250Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=35 transfers=17040 maximum_identical_destinations=1 2026-09-13T19:54:03.025268Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=35 initial_horizon=9228 selected_horizon=9228 endpoint_lower_bound=7296 lower_bound_gap=1932 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:03.045827Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=4 2026-09-13T19:54:03.048781Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=35 tile=1435 row_words=74 horizon=9228 2026-09-13T19:54:03.052813Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=4 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:54:03.052839Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=4 initial_horizon=3571 selected_horizon=3571 endpoint_lower_bound=3456 lower_bound_gap=115 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:03.062592Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=4 tile=1055 row_words=82 horizon=3571 2026-09-13T19:54:03.129191Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=5 2026-09-13T19:54:03.135772Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=5 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:54:03.135801Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=5 initial_horizon=3437 selected_horizon=3437 endpoint_lower_bound=3360 lower_bound_gap=77 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:03.141073Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=13 2026-09-13T19:54:03.145936Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=5 tile=1089 row_words=76 horizon=3437 2026-09-13T19:54:03.272009Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=6 2026-09-13T19:54:03.277544Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=6 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:54:03.277566Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=6 initial_horizon=4007 selected_horizon=4007 endpoint_lower_bound=3936 lower_bound_gap=71 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:03.287759Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=6 tile=875 row_words=88 horizon=4007 2026-09-13T19:54:03.351460Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=7 2026-09-13T19:54:03.356265Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=7 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:54:03.356286Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=7 initial_horizon=4579 selected_horizon=4579 endpoint_lower_bound=4512 lower_bound_gap=67 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:03.365000Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=7 tile=1149 row_words=101 horizon=4579 2026-09-13T19:54:03.421873Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=15 2026-09-13T19:54:03.424969Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=15 transfers=5710 maximum_identical_destinations=1 2026-09-13T19:54:03.424994Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=15 initial_horizon=9580 selected_horizon=9580 endpoint_lower_bound=9472 lower_bound_gap=108 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:03.434916Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=15 tile=1141 row_words=34 horizon=9580 2026-09-13T19:54:04.748592Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=10 2026-09-13T19:54:04.806238Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=10 transfers=104868 maximum_identical_destinations=1 2026-09-13T19:54:04.806284Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=10 initial_horizon=1396 selected_horizon=1396 endpoint_lower_bound=1152 lower_bound_gap=244 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:04.891899Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=10 tile=572 row_words=350 horizon=1396 2026-09-13T19:54:04.936641Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=11 2026-09-13T19:54:05.635002Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=36 2026-09-13T19:54:05.675490Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=18 2026-09-13T19:54:05.703546Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=36 transfers=104926 maximum_identical_destinations=1 2026-09-13T19:54:05.703577Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=36 initial_horizon=1585 selected_horizon=1585 endpoint_lower_bound=1152 lower_bound_gap=433 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:05.739120Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=18 transfers=116560 maximum_identical_destinations=1 2026-09-13T19:54:05.739150Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=18 initial_horizon=2250 selected_horizon=2250 endpoint_lower_bound=1152 lower_bound_gap=1098 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:05.821501Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=36 tile=1204 row_words=346 horizon=1585 2026-09-13T19:54:05.849312Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=37 2026-09-13T19:54:05.867056Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=18 tile=645 row_words=405 horizon=2250 2026-09-13T19:54:05.996964Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=38 2026-09-13T19:54:06.001161Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=26 2026-09-13T19:54:06.022766Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=50 2026-09-13T19:54:06.023474Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=50 transfers=1440 maximum_identical_destinations=1 2026-09-13T19:54:06.023489Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=50 initial_horizon=448 selected_horizon=448 endpoint_lower_bound=360 lower_bound_gap=88 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:06.026554Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=50 tile=29 row_words=51 horizon=448 2026-09-13T19:54:06.027994Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=51 2026-09-13T19:54:06.030037Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=52 2026-09-13T19:54:06.062420Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=26 transfers=54216 maximum_identical_destinations=1 2026-09-13T19:54:06.062445Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=26 initial_horizon=20715 selected_horizon=20715 endpoint_lower_bound=14400 lower_bound_gap=6315 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:06.141828Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=26 tile=586 row_words=374 horizon=20715 2026-09-13T19:54:06.173999Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=30 2026-09-13T19:54:06.316435Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=27 2026-09-13T19:54:06.326382Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=27 transfers=16836 maximum_identical_destinations=1 2026-09-13T19:54:06.326404Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=27 initial_horizon=8173 selected_horizon=8173 endpoint_lower_bound=6912 lower_bound_gap=1261 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:06.348485Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=27 tile=1242 row_words=70 horizon=8173 2026-09-13T19:54:08.402786Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=19 2026-09-13T19:54:08.448426Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=19 transfers=69888 maximum_identical_destinations=1 2026-09-13T19:54:08.448455Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=19 initial_horizon=3171 selected_horizon=3171 endpoint_lower_bound=1152 lower_bound_gap=2019 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:08.528738Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=19 tile=391 row_words=384 horizon=3171 2026-09-13T19:54:08.532887Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=28 2026-09-13T19:54:08.594086Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=28 transfers=104913 maximum_identical_destinations=1 2026-09-13T19:54:08.594114Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=28 initial_horizon=1559 selected_horizon=1559 endpoint_lower_bound=1152 lower_bound_gap=407 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:08.685330Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=28 tile=503 row_words=235 horizon=1559 2026-09-13T19:54:08.711915Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=29 2026-09-13T19:54:08.776310Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=2 2026-09-13T19:54:08.781285Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=2 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:54:08.781306Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=2 initial_horizon=4720 selected_horizon=4720 endpoint_lower_bound=4608 lower_bound_gap=112 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:08.790334Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=2 tile=1247 row_words=106 horizon=4720 2026-09-13T19:54:08.851299Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=3 2026-09-13T19:54:08.856040Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=3 transfers=9216 maximum_identical_destinations=1 2026-09-13T19:54:08.856060Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=3 initial_horizon=4150 selected_horizon=4150 endpoint_lower_bound=4032 lower_bound_gap=118 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:08.864966Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=3 tile=1267 row_words=94 horizon=4150 2026-09-13T19:54:09.460793Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=32 2026-09-13T19:54:09.483077Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=32 transfers=41964 maximum_identical_destinations=1 2026-09-13T19:54:09.483102Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=32 initial_horizon=6348 selected_horizon=6348 endpoint_lower_bound=5120 lower_bound_gap=1228 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:09.519656Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=32 tile=307 row_words=128 horizon=6348 2026-09-13T19:54:10.468477Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=48 2026-09-13T19:54:10.574683Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=20 2026-09-13T19:54:10.597884Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=48 transfers=232998 maximum_identical_destinations=1 2026-09-13T19:54:10.597923Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=48 initial_horizon=7420 selected_horizon=7420 endpoint_lower_bound=3328 lower_bound_gap=4092 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:10.633183Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=20 transfers=29728 maximum_identical_destinations=1 2026-09-13T19:54:10.633232Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=20 initial_horizon=5829 selected_horizon=5829 endpoint_lower_bound=4392 lower_bound_gap=1437 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:10.708649Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=20 tile=266 row_words=385 horizon=5829 2026-09-13T19:54:10.916901Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=48 tile=284 row_words=1562 horizon=7420 2026-09-13T19:54:11.319395Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=49 2026-09-13T19:54:11.332140Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=49 transfers=24031 maximum_identical_destinations=1 2026-09-13T19:54:11.332169Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=49 initial_horizon=8741 selected_horizon=8741 endpoint_lower_bound=6756 lower_bound_gap=1985 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:11.357132Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=49 tile=131 row_words=125 horizon=8741 2026-09-13T19:54:11.424630Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=1 2026-09-13T19:54:11.429525Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=1 transfers=9792 maximum_identical_destinations=1 2026-09-13T19:54:11.429545Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=1 initial_horizon=5395 selected_horizon=5395 endpoint_lower_bound=5280 lower_bound_gap=115 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:11.439053Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=1 tile=981 row_words=124 horizon=5395 2026-09-13T19:54:12.048382Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=16 2026-09-13T19:54:12.116636Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=0 2026-09-13T19:54:12.256937Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=16 transfers=314748 maximum_identical_destinations=1 2026-09-13T19:54:12.256972Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=16 initial_horizon=4587 selected_horizon=4587 endpoint_lower_bound=3456 lower_bound_gap=1131 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:12.299703Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=0 transfers=29070 maximum_identical_destinations=1 2026-09-13T19:54:12.299740Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=0 initial_horizon=10285 selected_horizon=10285 endpoint_lower_bound=4672 lower_bound_gap=5613 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:12.453191Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=0 tile=538 row_words=1222 horizon=10285 2026-09-13T19:54:12.560638Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=40 2026-09-13T19:54:12.566034Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=40 transfers=8580 maximum_identical_destinations=1 2026-09-13T19:54:12.566057Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=40 initial_horizon=9578 selected_horizon=9578 endpoint_lower_bound=7104 lower_bound_gap=2474 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:12.580229Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=40 tile=495 row_words=42 horizon=9578 2026-09-13T19:54:12.695644Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=16 tile=325 row_words=894 horizon=4587 2026-09-13T19:54:13.078758Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=24 2026-09-13T19:54:13.103839Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=24 transfers=44640 maximum_identical_destinations=1 2026-09-13T19:54:13.103875Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=24 initial_horizon=4884 selected_horizon=4884 endpoint_lower_bound=4160 lower_bound_gap=724 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:13.142305Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=24 tile=1033 row_words=137 horizon=4884 2026-09-13T19:54:13.492762Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=23 2026-09-13T19:54:13.524899Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=23 transfers=39552 maximum_identical_destinations=1 2026-09-13T19:54:13.524929Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=23 initial_horizon=8538 selected_horizon=8538 endpoint_lower_bound=5632 lower_bound_gap=2906 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:13.575421Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=23 tile=621 row_words=176 horizon=8538 2026-09-13T19:54:13.648853Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=25 2026-09-13T19:54:13.660722Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=25 transfers=23312 maximum_identical_destinations=1 2026-09-13T19:54:13.660750Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=25 initial_horizon=2781 selected_horizon=2781 endpoint_lower_bound=1152 lower_bound_gap=1629 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:13.683822Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=25 tile=209 row_words=138 horizon=2781 2026-09-13T19:54:15.647367Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=22 transfers=66336 maximum_identical_destinations=1 2026-09-13T19:54:15.647438Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=22 initial_horizon=10511 selected_horizon=10511 endpoint_lower_bound=6832 lower_bound_gap=3679 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-13T19:54:15.703896Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=22 tile=247 row_words=325 horizon=10511 2026-09-13T19:54:15.759105Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=42 2026-09-13T19:54:15.799009Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=43 2026-09-13T19:54:16.245615Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=41 2026-09-13T19:54:16.363411Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=41 transfers=209796 maximum_identical_destinations=1 2026-09-13T19:54:16.363444Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=41 initial_horizon=2759 selected_horizon=2759 endpoint_lower_bound=2304 lower_bound_gap=455 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:16.502089Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=21 2026-09-13T19:54:16.594238Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=41 tile=58 row_words=929 horizon=2759 2026-09-13T19:54:16.644835Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=21 transfers=69984 maximum_identical_destinations=1 2026-09-13T19:54:16.644878Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=21 initial_horizon=3257 selected_horizon=3257 endpoint_lower_bound=2688 lower_bound_gap=569 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:16.820440Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=21 tile=308 row_words=957 horizon=3257 2026-09-13T19:54:18.171199Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=33 2026-09-13T19:54:18.287893Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=39 2026-09-13T19:54:18.388843Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=33 transfers=391962 maximum_identical_destinations=1 2026-09-13T19:54:18.388887Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=33 initial_horizon=4870 selected_horizon=4870 endpoint_lower_bound=4304 lower_bound_gap=566 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:18.548383Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=39 transfers=54216 maximum_identical_destinations=1 2026-09-13T19:54:18.548419Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=39 initial_horizon=17421 selected_horizon=17421 endpoint_lower_bound=11712 lower_bound_gap=5709 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:18.761343Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=39 tile=639 row_words=2200 horizon=17421 2026-09-13T19:54:18.936417Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=33 tile=429 row_words=752 horizon=4870 2026-09-13T19:54:21.818455Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=14 2026-09-13T19:54:22.365030Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=14 transfers=54216 maximum_identical_destinations=1 2026-09-13T19:54:22.365078Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=14 initial_horizon=18404 selected_horizon=18404 endpoint_lower_bound=17568 lower_bound_gap=836 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:22.786152Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=14 tile=178 row_words=3020 horizon=18404 2026-09-13T19:54:27.663418Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=34 2026-09-13T19:54:28.053473Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=34 transfers=198990 maximum_identical_destinations=1 2026-09-13T19:54:28.053521Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=34 initial_horizon=29836 selected_horizon=29836 endpoint_lower_bound=25728 lower_bound_gap=4108 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:28.465343Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=34 tile=179 row_words=2282 horizon=29836 2026-09-13T19:54:37.139821Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=31 2026-09-13T19:54:38.012495Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=31 transfers=62172 maximum_identical_destinations=1 2026-09-13T19:54:38.012538Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=31 initial_horizon=24740 selected_horizon=24740 endpoint_lower_bound=23424 lower_bound_gap=1316 selected_kind="reused" neighborhood_improvements=0 2026-09-13T19:54:38.643573Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=31 tile=538 row_words=4443 horizon=24740 2026-09-13T19:54:40.531883Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: evaluated exchange placement candidate offset=8192 baseline_score=317592297088 score=281321545344 baseline_cycles=5221284 candidate_cycles=5206056 row_bytes=87132 row_capacity=98240 accepted=true 2026-09-13T19:54:41.606556Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: package build phase finished phase="optimize_exchange_placement" elapsed_ms=64377 success=true 2026-09-13T19:54:41.690617Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: costed final placed program final_cycles=16611431 final_exchange=5638656 2026-09-13T19:54:45.218414Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="prepare_tile_code"}: package build phase finished phase="prepare_tile_code" elapsed_ms=768 success=true 2026-09-13T19:54:45.362319Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="emit_tile_code"}: package build phase finished phase="emit_tile_code" elapsed_ms=143 success=true 2026-09-13T19:54:45.760846Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="build_tile_images"}: package build phase finished phase="build_tile_images" elapsed_ms=351 success=true 2026-09-13T19:54:46.126775Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: validated search incumbent cycles=16611431 resuming=true 2026-09-13T19:54:46.157069Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: saved mid-plan search state path=artifacts/full-qk-20260913/bs2-k/state.json attempts=0 bytes=12325068 2026-09-13T19:54:46.179856Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: saved mid-plan search state path=artifacts/full-qk-20260913/bs2-k/state.json attempts=0 bytes=12325068 2026-09-13T19:54:46.625906Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: package build phase finished phase="plan_package" elapsed_ms=222823 success=true 2026-09-13T19:54:49.289551Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}: wrote exact tile placement profile path=artifacts/full-qk-20260913/bs2-k/memory/placement-598553.html 2026-09-13T19:54:50.142913Z INFO writing application package tiles=1472 2026-09-13T19:54:50.681110Z INFO application package written 2026-09-13T19:54:50.682555Z INFO reading application package 2026-09-13T19:54:51.997746Z INFO application package read tiles=1472 compiler=0.1.0 2026-09-13T19:54:51.999551Z INFO waiting for hardware ownership path=artifacts/layout-sweep/device.lock 2026-09-13T19:54:51.999571Z INFO acquired hardware ownership path=artifacts/layout-sweep/device.lock 2026-09-13T19:54:51.999584Z INFO opening IPU device path="/dev/ipu0" 2026-09-13T19:54:51.999615Z INFO IPU device attached path=/dev/ipu0 2026-09-13T19:54:51.999620Z INFO initializing IPU device 2026-09-13T19:54:52.007386Z INFO IPU device initialized 2026-09-13T19:54:52.007395Z INFO replaying device configuration register_writes=2003 2026-09-13T19:54:52.038758Z INFO loading application tile_count=1472 final_mark=23 2026-09-13T19:54:52.435612Z INFO application loaded and initial synchronization completed tile_count=1472 2026-09-13T19:54:57.718569Z INFO prepared reference inputs elapsed_ms=5281 2026-09-13T19:54:57.719327Z INFO configured host reference BLAS threads=4 referencePrecision=fp32 2026-09-13T19:55:41.540600Z INFO evaluated host reference elapsed_ms=43822 2026-09-13T19:55:41.544401Z INFO starting host exchange session startup_mark=23 2026-09-13T19:55:41.544424Z INFO attaching host exchange pages pages=2 2026-09-13T19:55:41.545099Z INFO host exchange session started 2026-09-13T19:55:41.547603Z INFO invoking host exchange call call="initialize" command=0 phases=344 2026-09-13T19:55:41.673517Z INFO invoking host exchange call call="run" command=0 phases=11 referenceMinimumCosineSimilarity=0.993945443 referenceInference=1 numericalTest=PASS 2026-09-13T19:55:41.687951Z INFO invoking host exchange call call="run" command=0 phases=11 referenceMinimumCosineSimilarity=0.993945443 referenceInference=2 numericalTest=PASS referenceMaximumAbsoluteError=0.397752 numericalTest=PASS package=artifacts/full-qk-20260913/bs2-k/model.ipuexe tiles=1472 hardwareTest=PASS