2026-09-15T04:20:00.304031Z 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 2026-09-15T04:20:00.551032Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: migrating legacy cast choices to scoped policies 2026-09-15T04:20:00.551070Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: migrated global tile mapping into scoped recipe ownership 2026-09-15T04:20:00.551075Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: migrating global packing rows to named copy choices 2026-09-15T04:20:00.551079Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: migrating global grouping and result bases to named groups and actual homes 2026-09-15T04:20:00.677726Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: migrated checkpoint context without redundant bookkeeping 2026-09-15T04:20:00.677783Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: migrating legacy site choices; cleared obsolete search visits 2026-09-15T04:20:00.677797Z 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/real-bs1/state.json attempts=0 2026-09-15T04:20:08.774548Z 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=4986 2026-09-15T04:20:10.915812Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: screened exchange table geometry expansion_ms=7373 expansion_and_footprint_ms=9511 estimated_row_bytes=82768 heuristic_row_bytes=201704 geometry_fragments_per_tile=8583 fragment_limit=16384 2026-09-15T04:20:11.639501Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="place_provisional_storage"}: package build phase finished phase="place_provisional_storage" elapsed_ms=662 success=true 2026-09-15T04:20:11.726446Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=23 transfers=1457 maximum_identical_destinations=1 2026-09-15T04:20:11.726491Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=23 initial_horizon=2909 selected_horizon=2909 endpoint_lower_bound=2304 lower_bound_gap=605 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:11.727049Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=34 transfers=1457 maximum_identical_destinations=1 2026-09-15T04:20:11.727087Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=34 initial_horizon=2828 selected_horizon=2828 endpoint_lower_bound=2304 lower_bound_gap=524 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:11.730403Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=23 tile=22 row_words=23 horizon=2909 2026-09-15T04:20:11.731057Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=34 tile=114 row_words=24 horizon=2828 2026-09-15T04:20:11.745802Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=29 transfers=2820 maximum_identical_destinations=1 2026-09-15T04:20:11.745847Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=29 initial_horizon=3578 selected_horizon=3578 endpoint_lower_bound=1076 lower_bound_gap=2502 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:11.752182Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=29 tile=1452 row_words=15 horizon=3578 2026-09-15T04:20:11.757006Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=24 transfers=1457 maximum_identical_destinations=1 2026-09-15T04:20:11.757030Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=24 initial_horizon=2969 selected_horizon=2969 endpoint_lower_bound=2304 lower_bound_gap=665 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:11.757259Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=35 transfers=1457 maximum_identical_destinations=1 2026-09-15T04:20:11.757289Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=35 initial_horizon=2978 selected_horizon=2978 endpoint_lower_bound=2304 lower_bound_gap=674 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:11.760861Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=24 tile=13 row_words=19 horizon=2969 2026-09-15T04:20:11.760894Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=35 tile=13 row_words=21 horizon=2978 2026-09-15T04:20:11.785150Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=17 transfers=11656 maximum_identical_destinations=1 2026-09-15T04:20:11.785194Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=17 initial_horizon=2961 selected_horizon=2961 endpoint_lower_bound=2304 lower_bound_gap=657 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:11.790898Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=17 tile=163 row_words=116 horizon=2961 2026-09-15T04:20:11.884183Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=18 transfers=11648 maximum_identical_destinations=1 2026-09-15T04:20:11.884236Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=18 initial_horizon=3015 selected_horizon=3015 endpoint_lower_bound=2304 lower_bound_gap=711 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:11.890242Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=18 tile=85 row_words=90 horizon=3015 2026-09-15T04:20:12.134704Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=27 transfers=22536 maximum_identical_destinations=1 2026-09-15T04:20:12.134734Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=27 initial_horizon=9429 selected_horizon=9429 endpoint_lower_bound=7104 lower_bound_gap=2325 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:12.153678Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=27 tile=854 row_words=108 horizon=9429 2026-09-15T04:20:12.209966Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=21 transfers=20656 maximum_identical_destinations=1 2026-09-15T04:20:12.210004Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=21 initial_horizon=4485 selected_horizon=4485 endpoint_lower_bound=3648 lower_bound_gap=837 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:12.231686Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=21 tile=535 row_words=106 horizon=4485 2026-09-15T04:20:13.591108Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=22 transfers=51948 maximum_identical_destinations=1 2026-09-15T04:20:13.591166Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=22 initial_horizon=859 selected_horizon=859 endpoint_lower_bound=576 lower_bound_gap=283 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:13.638138Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=22 tile=68 row_words=172 horizon=859 2026-09-15T04:20:15.040369Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=12 transfers=58256 maximum_identical_destinations=1 2026-09-15T04:20:15.040421Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=12 initial_horizon=2646 selected_horizon=2646 endpoint_lower_bound=2304 lower_bound_gap=342 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:15.091407Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=12 tile=79 row_words=488 horizon=2646 2026-09-15T04:20:16.013742Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=8 transfers=155252 maximum_identical_destinations=1 2026-09-15T04:20:16.013803Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=8 initial_horizon=2112 selected_horizon=2112 endpoint_lower_bound=1728 lower_bound_gap=384 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:16.077899Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: compared ordinary and paired exchange schedules phase=19 candidates=8748 ordinary_horizon=10862 paired_horizon=11632 use_paired=false 2026-09-15T04:20:16.135554Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=8 tile=152 row_words=323 horizon=2112 2026-09-15T04:20:16.175462Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=19 transfers=8748 maximum_identical_destinations=1 2026-09-15T04:20:16.175501Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=19 initial_horizon=10862 selected_horizon=10862 endpoint_lower_bound=7008 lower_bound_gap=3854 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:16.183060Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=9 transfers=1457 maximum_identical_destinations=1 2026-09-15T04:20:16.183090Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=9 initial_horizon=5353 selected_horizon=5353 endpoint_lower_bound=3456 lower_bound_gap=1897 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:16.188130Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=9 tile=74 row_words=15 horizon=5353 2026-09-15T04:20:16.208409Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=10 transfers=2181 maximum_identical_destinations=1 2026-09-15T04:20:16.208431Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=10 initial_horizon=7015 selected_horizon=7015 endpoint_lower_bound=6912 lower_bound_gap=103 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:16.210820Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=10 tile=94 row_words=38 horizon=7015 2026-09-15T04:20:16.214309Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=19 tile=507 row_words=391 horizon=10862 2026-09-15T04:20:16.293315Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=20 transfers=1728 maximum_identical_destinations=1 2026-09-15T04:20:16.293359Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=20 initial_horizon=1338 selected_horizon=1338 endpoint_lower_bound=1152 lower_bound_gap=186 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:16.305334Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=20 tile=1003 row_words=18 horizon=1338 2026-09-15T04:20:16.332631Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=4 transfers=2193 maximum_identical_destinations=1 2026-09-15T04:20:16.332661Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=4 initial_horizon=3113 selected_horizon=3113 endpoint_lower_bound=2304 lower_bound_gap=809 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:16.337963Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=4 tile=54 row_words=25 horizon=3113 2026-09-15T04:20:17.282729Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=11 transfers=58280 maximum_identical_destinations=1 2026-09-15T04:20:17.282779Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=11 initial_horizon=2452 selected_horizon=2452 endpoint_lower_bound=2304 lower_bound_gap=148 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:17.334651Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=11 tile=15 row_words=394 horizon=2452 2026-09-15T04:20:17.436879Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=31 transfers=3096 maximum_identical_destinations=1 2026-09-15T04:20:17.436915Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=31 initial_horizon=5081 selected_horizon=5081 endpoint_lower_bound=2560 lower_bound_gap=2521 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:17.452364Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=31 tile=447 row_words=34 horizon=5081 2026-09-15T04:20:17.989950Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=13 transfers=23616 maximum_identical_destinations=1 2026-09-15T04:20:17.990007Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=13 initial_horizon=3928 selected_horizon=3928 endpoint_lower_bound=3378 lower_bound_gap=550 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:18.049528Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=13 tile=13 row_words=481 horizon=3928 2026-09-15T04:20:19.591846Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=14 transfers=66320 maximum_identical_destinations=1 2026-09-15T04:20:19.591915Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=14 initial_horizon=6922 selected_horizon=6922 endpoint_lower_bound=3240 lower_bound_gap=3682 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:19.633007Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=14 tile=321 row_words=289 horizon=6922 2026-09-15T04:20:20.443874Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=32 transfers=155880 maximum_identical_destinations=1 2026-09-15T04:20:20.443916Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=32 initial_horizon=14092 selected_horizon=14092 endpoint_lower_bound=8640 lower_bound_gap=5452 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:20.476782Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=28 transfers=195540 maximum_identical_destinations=1 2026-09-15T04:20:20.476841Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=28 initial_horizon=2648 selected_horizon=2648 endpoint_lower_bound=2152 lower_bound_gap=496 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:20.516916Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=32 tile=907 row_words=454 horizon=14092 2026-09-15T04:20:20.686909Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=28 tile=361 row_words=603 horizon=2648 2026-09-15T04:20:21.076974Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=15 transfers=38784 maximum_identical_destinations=1 2026-09-15T04:20:21.077078Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=15 initial_horizon=9044 selected_horizon=9044 endpoint_lower_bound=4864 lower_bound_gap=4180 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:21.113810Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=15 tile=630 row_words=218 horizon=9044 2026-09-15T04:20:21.224374Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=0 transfers=28773 maximum_identical_destinations=1 2026-09-15T04:20:21.224470Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=0 initial_horizon=7862 selected_horizon=7862 endpoint_lower_bound=6624 lower_bound_gap=1238 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:21.359532Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=0 tile=79 row_words=1289 horizon=7862 2026-09-15T04:20:21.775325Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=33 transfers=52174 maximum_identical_destinations=1 2026-09-15T04:20:21.775384Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=33 initial_horizon=866 selected_horizon=866 endpoint_lower_bound=576 lower_bound_gap=290 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:21.812530Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=33 tile=519 row_words=114 horizon=866 2026-09-15T04:20:21.876295Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=3 transfers=2773 maximum_identical_destinations=1 2026-09-15T04:20:21.876334Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=3 initial_horizon=1088 selected_horizon=1088 endpoint_lower_bound=288 lower_bound_gap=800 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:21.887443Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=3 tile=677 row_words=17 horizon=1088 2026-09-15T04:20:22.091826Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=30 transfers=21112 maximum_identical_destinations=1 2026-09-15T04:20:22.091875Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=30 initial_horizon=20024 selected_horizon=20024 endpoint_lower_bound=19520 lower_bound_gap=504 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:22.116767Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=16 transfers=44544 maximum_identical_destinations=1 2026-09-15T04:20:22.116813Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=16 initial_horizon=2786 selected_horizon=2786 endpoint_lower_bound=2496 lower_bound_gap=290 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:22.150518Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=16 tile=832 row_words=142 horizon=2786 2026-09-15T04:20:22.176507Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=30 tile=481 row_words=1010 horizon=20024 2026-09-15T04:20:22.189158Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=1 transfers=35568 maximum_identical_destinations=1 2026-09-15T04:20:22.189225Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=1 initial_horizon=4658 selected_horizon=4658 endpoint_lower_bound=4096 lower_bound_gap=562 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:22.196551Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: compared ordinary and paired exchange schedules phase=51 candidates=18 ordinary_horizon=688 paired_horizon=1473 use_paired=false 2026-09-15T04:20:22.219605Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=1 tile=948 row_words=145 horizon=4658 2026-09-15T04:20:22.220325Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=42 transfers=1224 maximum_identical_destinations=1 2026-09-15T04:20:22.220376Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=42 initial_horizon=374 selected_horizon=374 endpoint_lower_bound=272 lower_bound_gap=102 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:22.224622Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=42 tile=47 row_words=23 horizon=374 2026-09-15T04:20:22.226608Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=52 transfers=1294 maximum_identical_destinations=1 2026-09-15T04:20:22.226635Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=52 initial_horizon=471 selected_horizon=471 endpoint_lower_bound=256 lower_bound_gap=215 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:22.233279Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=52 tile=866 row_words=10 horizon=471 2026-09-15T04:20:22.241147Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=2 transfers=52102 maximum_identical_destinations=1 2026-09-15T04:20:22.241190Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=2 initial_horizon=838 selected_horizon=838 endpoint_lower_bound=576 lower_bound_gap=262 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:22.253530Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=53 transfers=1224 maximum_identical_destinations=1 2026-09-15T04:20:22.253553Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=53 initial_horizon=374 selected_horizon=374 endpoint_lower_bound=272 lower_bound_gap=102 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:22.255329Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=44 transfers=1741 maximum_identical_destinations=1 2026-09-15T04:20:22.255379Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=44 initial_horizon=6408 selected_horizon=6408 endpoint_lower_bound=4644 lower_bound_gap=1764 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:22.257627Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=53 tile=47 row_words=23 horizon=374 2026-09-15T04:20:22.258140Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=44 tile=13 row_words=51 horizon=6408 2026-09-15T04:20:22.286024Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=2 tile=496 row_words=146 horizon=838 2026-09-15T04:20:22.299075Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: compared ordinary and paired exchange schedules phase=57 candidates=32 ordinary_horizon=210 paired_horizon=1250 use_paired=false 2026-09-15T04:20:22.336028Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: compared ordinary and paired exchange schedules phase=58 candidates=56 ordinary_horizon=124 paired_horizon=317 use_paired=false 2026-09-15T04:20:22.369331Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=59 transfers=1438 maximum_identical_destinations=1 2026-09-15T04:20:22.369355Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=59 initial_horizon=1112 selected_horizon=1112 endpoint_lower_bound=896 lower_bound_gap=216 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:22.376331Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=59 tile=875 row_words=10 horizon=1112 2026-09-15T04:20:22.396491Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=60 transfers=1400 maximum_identical_destinations=1 2026-09-15T04:20:22.396513Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=60 initial_horizon=4006 selected_horizon=4006 endpoint_lower_bound=3920 lower_bound_gap=86 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:22.400431Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=60 tile=39 row_words=39 horizon=4006 2026-09-15T04:20:22.427527Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=46 transfers=11536 maximum_identical_destinations=1 2026-09-15T04:20:22.427577Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=46 initial_horizon=2548 selected_horizon=2548 endpoint_lower_bound=2304 lower_bound_gap=244 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:22.433193Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=61 transfers=2151 maximum_identical_destinations=1 2026-09-15T04:20:22.433242Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=61 initial_horizon=172 selected_horizon=172 endpoint_lower_bound=64 lower_bound_gap=108 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:22.436923Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=7 transfers=50544 maximum_identical_destinations=1 2026-09-15T04:20:22.436994Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=7 initial_horizon=9085 selected_horizon=9085 endpoint_lower_bound=7424 lower_bound_gap=1661 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:22.438166Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=61 tile=1104 row_words=41 horizon=172 2026-09-15T04:20:22.439872Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=46 tile=164 row_words=113 horizon=2548 2026-09-15T04:20:22.459338Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=62 transfers=1075 maximum_identical_destinations=1 2026-09-15T04:20:22.459365Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=62 initial_horizon=216 selected_horizon=216 endpoint_lower_bound=4 lower_bound_gap=212 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:22.464255Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=62 tile=46 row_words=9 horizon=216 2026-09-15T04:20:22.476560Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=48 transfers=1056 maximum_identical_destinations=1 2026-09-15T04:20:22.476596Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=48 initial_horizon=1388 selected_horizon=1388 endpoint_lower_bound=1152 lower_bound_gap=236 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:22.478602Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=48 tile=79 row_words=38 horizon=1388 2026-09-15T04:20:22.479369Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=7 tile=473 row_words=171 horizon=9085 2026-09-15T04:20:22.519953Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=41 transfers=1294 maximum_identical_destinations=1 2026-09-15T04:20:22.519982Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=41 initial_horizon=471 selected_horizon=471 endpoint_lower_bound=256 lower_bound_gap=215 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:22.529346Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=41 tile=866 row_words=10 horizon=471 2026-09-15T04:20:22.561676Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=64 transfers=1725 maximum_identical_destinations=1 2026-09-15T04:20:22.561701Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=64 initial_horizon=1112 selected_horizon=1112 endpoint_lower_bound=896 lower_bound_gap=216 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:22.571908Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=64 tile=1357 row_words=14 horizon=1112 2026-09-15T04:20:22.581096Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: compared ordinary and paired exchange schedules phase=40 candidates=72 ordinary_horizon=5142 paired_horizon=5319 use_paired=false 2026-09-15T04:20:22.590149Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=40 transfers=1529 maximum_identical_destinations=1 2026-09-15T04:20:22.590171Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=40 initial_horizon=5142 selected_horizon=5142 endpoint_lower_bound=2368 lower_bound_gap=2774 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:22.594347Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=65 transfers=1368 maximum_identical_destinations=1 2026-09-15T04:20:22.594383Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=65 initial_horizon=406 selected_horizon=406 endpoint_lower_bound=304 lower_bound_gap=102 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:22.598005Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=40 tile=263 row_words=22 horizon=5142 2026-09-15T04:20:22.600360Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=65 tile=47 row_words=25 horizon=406 2026-09-15T04:20:23.036383Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=38 transfers=24132 maximum_identical_destinations=1 2026-09-15T04:20:23.036443Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=38 initial_horizon=8766 selected_horizon=8766 endpoint_lower_bound=7104 lower_bound_gap=1662 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:23.075903Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=38 tile=1051 row_words=117 horizon=8766 2026-09-15T04:20:23.749241Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=45 transfers=65610 maximum_identical_destinations=1 2026-09-15T04:20:23.749295Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=45 initial_horizon=5395 selected_horizon=5395 endpoint_lower_bound=4320 lower_bound_gap=1075 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:23.851292Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=45 tile=71 row_words=1061 horizon=5395 2026-09-15T04:20:23.926722Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: compared ordinary and paired exchange schedules phase=63 candidates=972 ordinary_horizon=548 paired_horizon=2983 use_paired=false 2026-09-15T04:20:23.957165Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=63 transfers=1024 maximum_identical_destinations=1 2026-09-15T04:20:23.957196Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=63 initial_horizon=548 selected_horizon=548 endpoint_lower_bound=112 lower_bound_gap=436 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:23.973483Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=63 tile=1017 row_words=100 horizon=548 2026-09-15T04:20:26.673005Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: compared ordinary and paired exchange schedules phase=37 candidates=26244 ordinary_horizon=10184 paired_horizon=37328 use_paired=false 2026-09-15T04:20:27.006889Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=37 transfers=28836 maximum_identical_destinations=1 2026-09-15T04:20:27.006929Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=37 initial_horizon=10184 selected_horizon=10184 endpoint_lower_bound=5808 lower_bound_gap=4376 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:27.154974Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=37 tile=634 row_words=1171 horizon=10184 2026-09-15T04:20:28.023853Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=39 transfers=104344 maximum_identical_destinations=1 2026-09-15T04:20:28.023913Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=39 initial_horizon=1541 selected_horizon=1541 endpoint_lower_bound=1152 lower_bound_gap=389 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:28.129555Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=39 tile=379 row_words=344 horizon=1541 2026-09-15T04:20:28.636637Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=26 transfers=35928 maximum_identical_destinations=1 2026-09-15T04:20:28.636700Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=26 initial_horizon=14211 selected_horizon=14211 endpoint_lower_bound=11616 lower_bound_gap=2595 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:28.922976Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=26 tile=464 row_words=2117 horizon=14211 2026-09-15T04:20:43.376397Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: compared ordinary and paired exchange schedules phase=6 candidates=26244 ordinary_horizon=14406 paired_horizon=60506 use_paired=false 2026-09-15T04:20:44.148031Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: prepared large physical exchange phase phase=6 transfers=28836 maximum_identical_destinations=1 2026-09-15T04:20:44.148099Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: optimized physical exchange schedule phase=6 initial_horizon=14406 selected_horizon=14406 endpoint_lower_bound=9856 lower_bound_gap=4550 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:44.457638Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: finished large physical exchange phase phase=6 tile=557 row_words=2331 horizon=14406 2026-09-15T04:20:44.497360Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="schedule_provisional_exchanges"}: package build phase finished phase="schedule_provisional_exchanges" elapsed_ms=32857 success=true 2026-09-15T04:20:44.639621Z 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=142 success=true 2026-09-15T04:20:44.643952Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="compile_kernels"}: compiling kernel source=device/attention_softmax_f16.S name="attention_softmax_d72_p768_tail_f8_sm4" target=ipu21 2026-09-15T04:20:44.706500Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}:ipu_codegen.package.phase{phase="compile_kernels"}: kernel artifact created object=/srv/home/.cache/ipu-stack/kernels/f84008c09e2c118fbf5ed2be5d999db081d8b42070a89a65efd3af545a695805/kernel.o metadata=/srv/home/.cache/ipu-stack/kernels/f84008c09e2c118fbf5ed2be5d999db081d8b42070a89a65efd3af545a695805/kernel.json 2026-09-15T04:20:44.706933Z 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=67 success=true 2026-09-15T04:20:44.717504Z 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 2026-09-15T04:20:45.533709Z 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=55200 maximum_uncompressed_repeat_patch_bytes=0 maximum_elided_arithmetic_patch_bytes=0 2026-09-15T04:20:47.980966Z 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=209 success=true 2026-09-15T04:20:47.981057Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: placing generated tile programs linked_end=380868 host_code_base=380872 host_code_bytes=8892 generated_code_bytes=12740 exchange_table_bytes=55200 executable_ranges=[(377716, 377720), (379900, 379904), (380868, 380872), (389832, 524288)] 2026-09-15T04:20:47.981086Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: allocated package support memory linked_end=380868 profile_bytes=0 exchange_table_bytes=55200 host_code_bytes=8892 host_data_bytes=6148 generated_code_bytes=12740 code_address=389832 available_ranges=[(327680, 360448), (368356, 376832), (475136, 949168)] 2026-09-15T04:20:49.201335Z 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=827 success=true 2026-09-15T04:20:49.258708Z 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 2026-09-15T04:20:49.265189Z 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=34 2026-09-15T04:20:49.265918Z 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=1457 maximum_identical_destinations=1 2026-09-15T04:20:49.265929Z 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=2828 selected_horizon=2828 endpoint_lower_bound=2304 lower_bound_gap=524 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:49.267421Z 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 2026-09-15T04:20:49.268008Z 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=42 transfers=1224 maximum_identical_destinations=1 2026-09-15T04:20:49.268021Z 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=42 initial_horizon=374 selected_horizon=374 endpoint_lower_bound=272 lower_bound_gap=102 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:49.271176Z 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=114 row_words=24 horizon=2828 2026-09-15T04:20:49.271746Z 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=42 tile=47 row_words=23 horizon=374 2026-09-15T04:20:49.277807Z 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 2026-09-15T04:20:49.277974Z 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=4 2026-09-15T04:20:49.278333Z 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=52 transfers=1294 maximum_identical_destinations=1 2026-09-15T04:20:49.278350Z 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=52 initial_horizon=471 selected_horizon=471 endpoint_lower_bound=256 lower_bound_gap=215 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:49.278510Z 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 2026-09-15T04:20:49.279073Z 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=2193 maximum_identical_destinations=1 2026-09-15T04:20:49.279088Z 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=3113 selected_horizon=3113 endpoint_lower_bound=2304 lower_bound_gap=809 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:49.283288Z 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=52 tile=866 row_words=10 horizon=471 2026-09-15T04:20:49.284822Z 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=54 row_words=25 horizon=3113 2026-09-15T04:20:49.287373Z 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=35 2026-09-15T04:20:49.287993Z 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=1457 maximum_identical_destinations=1 2026-09-15T04:20:49.288003Z 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=2978 selected_horizon=2978 endpoint_lower_bound=2304 lower_bound_gap=674 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:49.292780Z 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=13 row_words=21 horizon=2978 2026-09-15T04:20:49.294067Z 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=44 2026-09-15T04:20:49.294974Z 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=1741 maximum_identical_destinations=1 2026-09-15T04:20:49.294990Z 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=6408 selected_horizon=6408 endpoint_lower_bound=4644 lower_bound_gap=1764 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:49.295463Z 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 2026-09-15T04:20:49.295941Z 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=53 transfers=1224 maximum_identical_destinations=1 2026-09-15T04:20:49.295958Z 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=53 initial_horizon=374 selected_horizon=374 endpoint_lower_bound=272 lower_bound_gap=102 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:49.297178Z 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=13 row_words=51 horizon=6408 2026-09-15T04:20:49.298923Z 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=53 tile=47 row_words=23 horizon=374 2026-09-15T04:20:49.304901Z 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 2026-09-15T04:20:49.311513Z 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=55 2026-09-15T04:20:49.314366Z 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 2026-09-15T04:20:49.324530Z 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=57 2026-09-15T04:20:49.335393Z 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 2026-09-15T04:20:49.340568Z 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 2026-09-15T04:20:49.341306Z 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=11656 maximum_identical_destinations=1 2026-09-15T04:20:49.341331Z 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=2961 selected_horizon=2961 endpoint_lower_bound=2304 lower_bound_gap=657 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:49.348729Z 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=163 row_words=116 horizon=2961 2026-09-15T04:20:49.349144Z 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=5 2026-09-15T04:20:49.358168Z 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=36 2026-09-15T04:20:49.361179Z 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 2026-09-15T04:20:49.361775Z 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=59 transfers=1438 maximum_identical_destinations=1 2026-09-15T04:20:49.361787Z 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=59 initial_horizon=1112 selected_horizon=1112 endpoint_lower_bound=896 lower_bound_gap=216 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:49.367340Z 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=59 tile=875 row_words=10 horizon=1112 2026-09-15T04:20:49.381103Z 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 2026-09-15T04:20:49.381688Z 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=60 transfers=1400 maximum_identical_destinations=1 2026-09-15T04:20:49.381702Z 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=60 initial_horizon=4006 selected_horizon=4006 endpoint_lower_bound=3920 lower_bound_gap=86 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:49.385026Z 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=60 tile=39 row_words=39 horizon=4006 2026-09-15T04:20:49.406859Z 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 2026-09-15T04:20:49.407696Z 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=61 transfers=2151 maximum_identical_destinations=1 2026-09-15T04:20:49.407712Z 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=61 initial_horizon=172 selected_horizon=172 endpoint_lower_bound=64 lower_bound_gap=108 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:49.411193Z 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=61 tile=1104 row_words=41 horizon=172 2026-09-15T04:20:49.432472Z 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 2026-09-15T04:20:49.433080Z 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=1075 maximum_identical_destinations=1 2026-09-15T04:20:49.433094Z 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=216 selected_horizon=216 endpoint_lower_bound=4 lower_bound_gap=212 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:49.438399Z 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=46 row_words=9 horizon=216 2026-09-15T04:20:49.454046Z 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=18 2026-09-15T04:20:49.461110Z 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=11648 maximum_identical_destinations=1 2026-09-15T04:20:49.461136Z 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=3015 selected_horizon=3015 endpoint_lower_bound=2304 lower_bound_gap=711 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:49.468063Z 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=85 row_words=90 horizon=3015 2026-09-15T04:20:49.791879Z 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 2026-09-15T04:20:49.805563Z 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=38 transfers=24132 maximum_identical_destinations=1 2026-09-15T04:20:49.805587Z 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=38 initial_horizon=8766 selected_horizon=8766 endpoint_lower_bound=7104 lower_bound_gap=1662 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:49.831835Z 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=38 tile=1051 row_words=117 horizon=8766 2026-09-15T04:20:50.435365Z 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 2026-09-15T04:20:50.450943Z 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=1024 maximum_identical_destinations=1 2026-09-15T04:20:50.450971Z 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=548 selected_horizon=548 endpoint_lower_bound=112 lower_bound_gap=436 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:50.472050Z 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=1017 row_words=100 horizon=548 2026-09-15T04:20:50.496461Z 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=64 2026-09-15T04:20:50.497273Z 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=1725 maximum_identical_destinations=1 2026-09-15T04:20:50.497289Z 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=1112 selected_horizon=1112 endpoint_lower_bound=896 lower_bound_gap=216 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:50.504267Z 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=1357 row_words=14 horizon=1112 2026-09-15T04:20:50.518526Z 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=65 2026-09-15T04:20:50.519112Z 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=1368 maximum_identical_destinations=1 2026-09-15T04:20:50.519122Z 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=406 selected_horizon=406 endpoint_lower_bound=304 lower_bound_gap=102 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:50.523221Z 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=47 row_words=25 horizon=406 2026-09-15T04:20:50.529862Z 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=66 2026-09-15T04:20:50.535664Z 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 2026-09-15T04:20:50.542466Z 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 2026-09-15T04:20:50.747463Z 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 2026-09-15T04:20:50.787156Z 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=65610 maximum_identical_destinations=1 2026-09-15T04:20:50.787197Z 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=5395 selected_horizon=5395 endpoint_lower_bound=4320 lower_bound_gap=1075 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:50.882898Z 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=71 row_words=1061 horizon=5395 2026-09-15T04:20:51.071880Z 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=46 2026-09-15T04:20:51.077997Z 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=46 transfers=11536 maximum_identical_destinations=1 2026-09-15T04:20:51.078024Z 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=46 initial_horizon=2548 selected_horizon=2548 endpoint_lower_bound=2304 lower_bound_gap=244 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:51.086343Z 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=46 tile=164 row_words=113 horizon=2548 2026-09-15T04:20:51.096071Z 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 2026-09-15T04:20:51.109021Z 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=48 2026-09-15T04:20:51.109576Z 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=1056 maximum_identical_destinations=1 2026-09-15T04:20:51.109588Z 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=1388 selected_horizon=1388 endpoint_lower_bound=1152 lower_bound_gap=236 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:51.111303Z 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=79 row_words=38 horizon=1388 2026-09-15T04:20:51.114192Z 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=49 2026-09-15T04:20:51.115969Z 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 2026-09-15T04:20:51.176336Z 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=25 2026-09-15T04:20:51.804479Z 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 2026-09-15T04:20:51.836015Z 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=58256 maximum_identical_destinations=1 2026-09-15T04:20:51.836064Z 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=2646 selected_horizon=2646 endpoint_lower_bound=2304 lower_bound_gap=342 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:51.889961Z 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=79 row_words=488 horizon=2646 2026-09-15T04:20:52.586662Z 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 2026-09-15T04:20:52.636904Z 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=8748 maximum_identical_destinations=1 2026-09-15T04:20:52.636940Z 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=10862 selected_horizon=10862 endpoint_lower_bound=7008 lower_bound_gap=3854 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:52.669172Z 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=507 row_words=391 horizon=10862 2026-09-15T04:20:52.731993Z 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=20 2026-09-15T04:20:52.734228Z 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=1728 maximum_identical_destinations=1 2026-09-15T04:20:52.734252Z 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=1338 selected_horizon=1338 endpoint_lower_bound=1152 lower_bound_gap=186 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:52.744502Z 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=1003 row_words=18 horizon=1338 2026-09-15T04:20:53.017322Z 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=8 2026-09-15T04:20:53.060809Z 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=39 2026-09-15T04:20:53.106975Z 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=155252 maximum_identical_destinations=1 2026-09-15T04:20:53.107049Z 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=2112 selected_horizon=2112 endpoint_lower_bound=1728 lower_bound_gap=384 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:53.126074Z 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=104344 maximum_identical_destinations=1 2026-09-15T04:20:53.126106Z 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=1541 selected_horizon=1541 endpoint_lower_bound=1152 lower_bound_gap=389 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:53.158195Z 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 2026-09-15T04:20:53.170143Z 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=20656 maximum_identical_destinations=1 2026-09-15T04:20:53.170173Z 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=4485 selected_horizon=4485 endpoint_lower_bound=3648 lower_bound_gap=837 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:53.194806Z 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=535 row_words=106 horizon=4485 2026-09-15T04:20:53.225471Z 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=379 row_words=344 horizon=1541 2026-09-15T04:20:53.246015Z 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=152 row_words=323 horizon=2112 2026-09-15T04:20:53.289225Z 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 2026-09-15T04:20:53.290877Z 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=1529 maximum_identical_destinations=1 2026-09-15T04:20:53.290895Z 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=5142 selected_horizon=5142 endpoint_lower_bound=2368 lower_bound_gap=2774 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:53.292715Z 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=9 2026-09-15T04:20:53.293471Z 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=1457 maximum_identical_destinations=1 2026-09-15T04:20:53.293492Z 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=5353 selected_horizon=5353 endpoint_lower_bound=3456 lower_bound_gap=1897 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:53.298365Z 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=263 row_words=22 horizon=5142 2026-09-15T04:20:53.298655Z 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=74 row_words=15 horizon=5353 2026-09-15T04:20:53.315279Z 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 2026-09-15T04:20:53.315870Z 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=1294 maximum_identical_destinations=1 2026-09-15T04:20:53.315882Z 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=471 selected_horizon=471 endpoint_lower_bound=256 lower_bound_gap=215 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:53.321900Z 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=866 row_words=10 horizon=471 2026-09-15T04:20:53.333284Z 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=2181 maximum_identical_destinations=1 2026-09-15T04:20:53.333308Z 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=7015 selected_horizon=7015 endpoint_lower_bound=6912 lower_bound_gap=103 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:53.335944Z 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=94 row_words=38 horizon=7015 2026-09-15T04:20:53.339420Z 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=23 2026-09-15T04:20:53.340010Z 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=1457 maximum_identical_destinations=1 2026-09-15T04:20:53.340019Z 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=2909 selected_horizon=2909 endpoint_lower_bound=2304 lower_bound_gap=605 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:53.345084Z 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=22 row_words=23 horizon=2909 2026-09-15T04:20:53.368694Z 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=24 2026-09-15T04:20:53.369329Z 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=1457 maximum_identical_destinations=1 2026-09-15T04:20:53.369343Z 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=2969 selected_horizon=2969 endpoint_lower_bound=2304 lower_bound_gap=665 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:53.374009Z 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=13 row_words=19 horizon=2969 2026-09-15T04:20:53.407415Z 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 2026-09-15T04:20:53.408644Z 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=29 transfers=2820 maximum_identical_destinations=1 2026-09-15T04:20:53.408660Z 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=29 initial_horizon=3578 selected_horizon=3578 endpoint_lower_bound=1076 lower_bound_gap=2502 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:53.416050Z 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=29 tile=1452 row_words=15 horizon=3578 2026-09-15T04:20:54.383345Z 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 2026-09-15T04:20:54.415765Z 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=11 transfers=58280 maximum_identical_destinations=1 2026-09-15T04:20:54.415795Z 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=11 initial_horizon=2452 selected_horizon=2452 endpoint_lower_bound=2304 lower_bound_gap=148 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:54.470876Z 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=11 tile=15 row_words=394 horizon=2452 2026-09-15T04:20:54.589888Z 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=13 2026-09-15T04:20:54.597393Z 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=22 2026-09-15T04:20:54.630992Z 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=51948 maximum_identical_destinations=1 2026-09-15T04:20:54.631026Z 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=859 selected_horizon=859 endpoint_lower_bound=576 lower_bound_gap=283 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:54.658265Z 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=13 transfers=23616 maximum_identical_destinations=1 2026-09-15T04:20:54.658292Z 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=13 initial_horizon=3928 selected_horizon=3928 endpoint_lower_bound=3378 lower_bound_gap=550 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:54.676827Z 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=68 row_words=172 horizon=859 2026-09-15T04:20:54.717464Z 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=3 2026-09-15T04:20:54.718670Z 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=2773 maximum_identical_destinations=1 2026-09-15T04:20:54.718688Z 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=1088 selected_horizon=1088 endpoint_lower_bound=288 lower_bound_gap=800 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:54.718854Z 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=13 tile=13 row_words=481 horizon=3928 2026-09-15T04:20:54.726449Z 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=677 row_words=17 horizon=1088 2026-09-15T04:20:54.930801Z 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 2026-09-15T04:20:54.942405Z 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=22536 maximum_identical_destinations=1 2026-09-15T04:20:54.942428Z 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=9429 selected_horizon=9429 endpoint_lower_bound=7104 lower_bound_gap=2325 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:54.963682Z 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=854 row_words=108 horizon=9429 2026-09-15T04:20:55.709567Z 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=2 2026-09-15T04:20:55.744184Z 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=52102 maximum_identical_destinations=1 2026-09-15T04:20:55.744247Z 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=838 selected_horizon=838 endpoint_lower_bound=576 lower_bound_gap=262 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:55.787264Z 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=496 row_words=146 horizon=838 2026-09-15T04:20:56.470754Z 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=1 2026-09-15T04:20:56.493451Z 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=35568 maximum_identical_destinations=1 2026-09-15T04:20:56.493482Z 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=4658 selected_horizon=4658 endpoint_lower_bound=4096 lower_bound_gap=562 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:56.527052Z 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=948 row_words=145 horizon=4658 2026-09-15T04:20:57.753028Z 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=66320 maximum_identical_destinations=1 2026-09-15T04:20:57.753079Z 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=7105 selected_horizon=7105 endpoint_lower_bound=3240 lower_bound_gap=3865 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:57.803359Z 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=320 row_words=295 horizon=7105 2026-09-15T04:20:57.906662Z 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 2026-09-15T04:20:57.958453Z 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=38784 maximum_identical_destinations=1 2026-09-15T04:20:57.958489Z 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=9044 selected_horizon=9044 endpoint_lower_bound=4864 lower_bound_gap=4180 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:57.999438Z 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=630 row_words=218 horizon=9044 2026-09-15T04:20:58.003954Z 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=3096 maximum_identical_destinations=1 2026-09-15T04:20:58.003996Z 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=4635 selected_horizon=4635 endpoint_lower_bound=2560 lower_bound_gap=2075 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:20:58.021927Z 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=445 row_words=35 horizon=4635 2026-09-15T04:20:58.595765Z 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=0 2026-09-15T04:20:58.909513Z 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=28773 maximum_identical_destinations=1 2026-09-15T04:20:58.909571Z 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=7862 selected_horizon=7862 endpoint_lower_bound=6624 lower_bound_gap=1238 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:58.911969Z 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=16 2026-09-15T04:20:58.951411Z 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=44544 maximum_identical_destinations=1 2026-09-15T04:20:58.951446Z 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=2786 selected_horizon=2786 endpoint_lower_bound=2496 lower_bound_gap=290 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:58.986564Z 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=832 row_words=142 horizon=2786 2026-09-15T04:20:59.057232Z 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=79 row_words=1289 horizon=7862 2026-09-15T04:20:59.292536Z 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=30 2026-09-15T04:20:59.395867Z 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=7 2026-09-15T04:20:59.423442Z 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=30 transfers=21112 maximum_identical_destinations=1 2026-09-15T04:20:59.423487Z 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=30 initial_horizon=20024 selected_horizon=20024 endpoint_lower_bound=19520 lower_bound_gap=504 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:59.429237Z 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=50544 maximum_identical_destinations=1 2026-09-15T04:20:59.429261Z 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=9085 selected_horizon=9085 endpoint_lower_bound=7424 lower_bound_gap=1661 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:20:59.462392Z 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=473 row_words=171 horizon=9085 2026-09-15T04:20:59.510677Z 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=30 tile=481 row_words=1010 horizon=20024 2026-09-15T04:21:00.062420Z 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 2026-09-15T04:21:00.092031Z 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=52174 maximum_identical_destinations=1 2026-09-15T04:21:00.092077Z 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=866 selected_horizon=866 endpoint_lower_bound=576 lower_bound_gap=290 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:21:00.131286Z 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=519 row_words=114 horizon=866 2026-09-15T04:21:00.428059Z 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 2026-09-15T04:21:00.457598Z 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=28 2026-09-15T04:21:00.582348Z 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=195540 maximum_identical_destinations=1 2026-09-15T04:21:00.582389Z 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=2648 selected_horizon=2648 endpoint_lower_bound=2152 lower_bound_gap=496 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:21:00.614676Z 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=37 transfers=28836 maximum_identical_destinations=1 2026-09-15T04:21:00.614710Z 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=37 initial_horizon=10184 selected_horizon=10184 endpoint_lower_bound=5808 lower_bound_gap=4376 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:21:00.774093Z 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=37 tile=634 row_words=1171 horizon=10184 2026-09-15T04:21:00.780993Z 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=361 row_words=603 horizon=2648 2026-09-15T04:21:05.502043Z 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=155880 maximum_identical_destinations=1 2026-09-15T04:21:05.502107Z 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=14328 selected_horizon=14328 endpoint_lower_bound=8640 lower_bound_gap=5688 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:21:05.622894Z 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=907 row_words=458 horizon=14328 2026-09-15T04:21:07.728852Z 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=6 2026-09-15T04:21:08.049070Z 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=28836 maximum_identical_destinations=1 2026-09-15T04:21:08.049117Z 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=14406 selected_horizon=14406 endpoint_lower_bound=9856 lower_bound_gap=4550 selected_kind="reused" neighborhood_improvements=0 2026-09-15T04:21:08.282439Z 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=557 row_words=2331 horizon=14406 2026-09-15T04:21:24.567255Z 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=35928 maximum_identical_destinations=1 2026-09-15T04:21:24.567321Z 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=13789 selected_horizon=13789 endpoint_lower_bound=11616 lower_bound_gap=2173 selected_kind="balanced-compact-streams" neighborhood_improvements=0 2026-09-15T04:21:24.884229Z 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=648 row_words=2108 horizon=13789 2026-09-15T04:21:24.920550Z 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=35719 success=true 2026-09-15T04:21:43.529820Z 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=18609 success=true 2026-09-15T04:21:43.591104Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: costed final placed program final_cycles=13316650 final_exchange=5438302 2026-09-15T04:21:45.561893Z 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=423 success=true 2026-09-15T04:21:45.679860Z 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=117 success=true 2026-09-15T04:21:46.139108Z 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=403 success=true 2026-09-15T04:21:46.200983Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: validated search incumbent cycles=13316650 resuming=true 2026-09-15T04:21:46.262070Z INFO ipu_codegen.package.build{tile_count=1472 operations=25}:ipu_codegen.package.phase{phase="plan_package"}: saved mid-plan search state path=artifacts/structure-refactor-20260915/typed-attention/real-bs1/state.json attempts=0 bytes=15044982 2026-09-15T04:21:46.526129Z 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=106222 success=true 2026-09-15T04:21:47.303512Z INFO writing application package tiles=1472 2026-09-15T04:21:47.408161Z INFO application package written 2026-09-15T04:21:47.408475Z INFO reading application package 2026-09-15T04:21:47.611626Z INFO application package read tiles=1472 compiler=0.1.0 2026-09-15T04:21:47.612422Z INFO waiting for hardware ownership path=/tmp/ipu-stack-device.lock 2026-09-15T04:21:47.612444Z INFO acquired hardware ownership path=/tmp/ipu-stack-device.lock 2026-09-15T04:21:47.612450Z INFO opening IPU device path="/dev/ipu0" 2026-09-15T04:21:47.612495Z INFO IPU device attached path=/dev/ipu0 2026-09-15T04:21:47.612509Z INFO initializing IPU device 2026-09-15T04:21:47.620511Z INFO IPU device initialized 2026-09-15T04:21:47.620515Z INFO replaying device configuration register_writes=2003 2026-09-15T04:21:47.647541Z INFO loading application tile_count=1472 final_mark=23 2026-09-15T04:21:47.923802Z INFO application loaded and initial synchronization completed tile_count=1472 2026-09-15T04:21:54.616725Z INFO starting host exchange session startup_mark=23 2026-09-15T04:21:54.616773Z INFO attaching host exchange pages pages=2 2026-09-15T04:21:54.617545Z INFO host exchange session started 2026-09-15T04:21:54.619290Z INFO invoking host exchange call call="initialize" command=0 phases=342 2026-09-15T04:21:54.795086Z INFO invoking host exchange call call="run" command=0 phases=7 referenceFixtureCase=authors referenceMinimumCosineSimilarity=0.994567066 referenceMaximumAbsoluteError=0.181597 numericalTest=PASS 2026-09-15T04:21:54.815049Z INFO invoking host exchange call call="run" command=0 phases=7 referenceFixtureCase=siglip referenceMinimumCosineSimilarity=0.996543687 referenceMaximumAbsoluteError=0.166239 numericalTest=PASS 2026-09-15T04:21:54.837732Z INFO invoking host exchange call call="run" command=0 phases=7 referenceFixtureCase=caffeine referenceMinimumCosineSimilarity=0.997382663 referenceMaximumAbsoluteError=0.130626 numericalTest=PASS 2026-09-15T04:21:54.857741Z INFO invoking host exchange call call="run" command=0 phases=7 referenceFixtureCase=robosign referenceMinimumCosineSimilarity=0.995361503 referenceMaximumAbsoluteError=0.310924 numericalTest=PASS 2026-09-15T04:21:54.877744Z INFO invoking host exchange call call="run" command=0 phases=7 referenceFixtureCase=fried_fish referenceMinimumCosineSimilarity=0.996956592 referenceMaximumAbsoluteError=0.157906 numericalTest=PASS 2026-09-15T04:21:54.897314Z INFO invoking host exchange call call="run" command=0 phases=7 referenceFixtureCase=cow_beach2 referenceMinimumCosineSimilarity=0.997177897 referenceMaximumAbsoluteError=0.165668 numericalTest=PASS package=artifacts/structure-refactor-20260915/typed-attention/real-bs1/model.ipuexe tiles=1472 hardwareTest=PASS