2026-09-06T19:35:00.619014Z  INFO retained operator-plan finalist finalist=0 values=11 operations=7 estimated_cycles=510698 estimated_exchange_cycles=217560 exchange_row_bytes=44628 peak_standard_bytes=351828 peak_interleaved_bytes=53248 peak_total_bytes=396884 maximum_standard_allocation_bytes=98304 active_tile_counts={192, 460, 1472} padding_group_counts={} conversion_sources=[]
2026-09-06T19:35:00.642740Z  INFO retained operator-plan finalist finalist=1 values=11 operations=7 estimated_cycles=516944 estimated_exchange_cycles=219000 exchange_row_bytes=44952 peak_standard_bytes=183448 peak_interleaved_bytes=53248 peak_total_bytes=220120 maximum_standard_allocation_bytes=98304 active_tile_counts={192, 480, 1472} padding_group_counts={16} conversion_sources=[]
2026-09-06T19:35:00.646269Z  INFO retained operator-plan finalist finalist=2 values=12 operations=8 estimated_cycles=572774 estimated_exchange_cycles=222240 exchange_row_bytes=45812 peak_standard_bytes=176884 peak_interleaved_bytes=196416 peak_total_bytes=356148 maximum_standard_allocation_bytes=98304 active_tile_counts={192, 480, 1472} padding_group_counts={16} conversion_sources=[Some(OperationId(2))]
2026-09-06T19:35:00.655713Z  INFO retained operator-plan finalist finalist=3 values=13 operations=9 estimated_cycles=607121 estimated_exchange_cycles=202440 exchange_row_bytes=41488 peak_standard_bytes=287248 peak_interleaved_bytes=180224 peak_total_bytes=467472 maximum_standard_allocation_bytes=98304 active_tile_counts={192, 460, 1380, 1472} padding_group_counts={} conversion_sources=[Some(OperationId(1)), Some(OperationId(2))]
2026-09-06T19:35:03.163347Z  INFO retained operator-plan finalist finalist=0 values=11 operations=7 estimated_cycles=510698 estimated_exchange_cycles=217560 exchange_row_bytes=44628 peak_standard_bytes=351828 peak_interleaved_bytes=53248 peak_total_bytes=396884 maximum_standard_allocation_bytes=98304 active_tile_counts={192, 460, 1472} padding_group_counts={} conversion_sources=[]
2026-09-06T19:35:03.183438Z  INFO retained operator-plan finalist finalist=1 values=11 operations=7 estimated_cycles=510698 estimated_exchange_cycles=217560 exchange_row_bytes=44628 peak_standard_bytes=339540 peak_interleaved_bytes=61056 peak_total_bytes=396884 maximum_standard_allocation_bytes=98304 active_tile_counts={192, 460, 1472} padding_group_counts={} conversion_sources=[]
2026-09-06T19:35:03.203425Z  INFO retained operator-plan finalist finalist=2 values=11 operations=7 estimated_cycles=516200 estimated_exchange_cycles=225240 exchange_row_bytes=46356 peak_standard_bytes=350484 peak_interleaved_bytes=53248 peak_total_bytes=392468 maximum_standard_allocation_bytes=98304 active_tile_counts={192, 368, 1472} padding_group_counts={} conversion_sources=[]
2026-09-06T19:35:03.224753Z  INFO retained operator-plan finalist finalist=3 values=11 operations=7 estimated_cycles=516944 estimated_exchange_cycles=219000 exchange_row_bytes=44952 peak_standard_bytes=183448 peak_interleaved_bytes=53248 peak_total_bytes=220120 maximum_standard_allocation_bytes=98304 active_tile_counts={192, 480, 1472} padding_group_counts={16} conversion_sources=[]
2026-09-06T19:35:03.307673Z  INFO ipu_codegen.package.phase{phase="lower_mid"}: package build phase finished phase="lower_mid" elapsed_ms=6013 success=true
2026-09-06T19:35:22.930792Z  INFO screened tile mappings by exchange resource load candidates=65 baseline_cycles=86432 candidate_cycles=82976 baseline_pressure=77979 candidate_pressure=74523
2026-09-06T19:35:23.061144Z  INFO modelled expanded operator plan finalist=5 modelled_cycles=384570 estimated_cycles=453522 estimated_exchange_cycles=164528
2026-09-06T19:35:25.834368Z  INFO screened tile mappings by exchange resource load candidates=89 baseline_cycles=82592 candidate_cycles=82592 baseline_pressure=76986 candidate_pressure=76986
2026-09-06T19:35:25.838399Z  INFO screened tile mappings by exchange resource load candidates=89 baseline_cycles=82592 candidate_cycles=82592 baseline_pressure=76986 candidate_pressure=76986
2026-09-06T19:35:25.973520Z  INFO modelled expanded operator plan finalist=4 modelled_cycles=373776 estimated_cycles=442888 estimated_exchange_cycles=164304
2026-09-06T19:35:25.989622Z  INFO modelled expanded operator plan finalist=0 modelled_cycles=381408 estimated_cycles=450520 estimated_exchange_cycles=164304
2026-09-06T19:35:27.427087Z  INFO screened tile mappings by exchange resource load candidates=93 baseline_cycles=88160 candidate_cycles=88160 baseline_pressure=72863 candidate_pressure=72863
2026-09-06T19:35:27.595388Z  INFO modelled expanded operator plan finalist=3 modelled_cycles=496694 estimated_cycles=589022 estimated_exchange_cycles=191888
2026-09-06T19:35:41.065806Z  INFO screened tile mappings by exchange resource load candidates=123 baseline_cycles=95104 candidate_cycles=95104 baseline_pressure=77592 candidate_pressure=77592
2026-09-06T19:35:41.297460Z  INFO modelled expanded operator plan finalist=2 modelled_cycles=642507 estimated_cycles=973163 estimated_exchange_cycles=437760
2026-09-06T19:35:42.214947Z  INFO screened tile mappings by exchange resource load candidates=123 baseline_cycles=82368 candidate_cycles=82368 baseline_pressure=77610 candidate_pressure=77610
2026-09-06T19:35:42.397839Z  INFO modelled expanded operator plan finalist=1 modelled_cycles=697003 estimated_cycles=1133395 estimated_exchange_cycles=531360
2026-09-06T19:35:42.429712Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: prepared large physical exchange phase phase=1 transfers=1334 maximum_identical_destinations=1
2026-09-06T19:35:42.429747Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: optimized physical exchange schedule phase=1 initial_horizon=2913 selected_horizon=2913 endpoint_lower_bound=2784 lower_bound_gap=129 selected_kind="full-duplex" neighborhood_improvements=0
2026-09-06T19:35:42.430817Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: finished large physical exchange phase phase=1 tile=367 row_words=11 horizon=2913
2026-09-06T19:35:42.458966Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: prepared large physical exchange phase phase=3 transfers=1334 maximum_identical_destinations=1
2026-09-06T19:35:42.458984Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: optimized physical exchange schedule phase=3 initial_horizon=2913 selected_horizon=2913 endpoint_lower_bound=2784 lower_bound_gap=129 selected_kind="full-duplex" neighborhood_improvements=0
2026-09-06T19:35:42.459999Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: finished large physical exchange phase phase=3 tile=367 row_words=11 horizon=2913
2026-09-06T19:35:42.486738Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: prepared large physical exchange phase phase=5 transfers=1334 maximum_identical_destinations=1
2026-09-06T19:35:42.486762Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: optimized physical exchange schedule phase=5 initial_horizon=2913 selected_horizon=2913 endpoint_lower_bound=2784 lower_bound_gap=129 selected_kind="full-duplex" neighborhood_improvements=0
2026-09-06T19:35:42.487783Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: finished large physical exchange phase phase=5 tile=367 row_words=11 horizon=2913
2026-09-06T19:35:43.548223Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: prepared large physical exchange phase phase=6 transfers=18209 maximum_identical_destinations=1
2026-09-06T19:35:43.548253Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: optimized physical exchange schedule phase=6 initial_horizon=1702 selected_horizon=1702 endpoint_lower_bound=928 lower_bound_gap=774 selected_kind="full-duplex" neighborhood_improvements=0
2026-09-06T19:35:43.571289Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: finished large physical exchange phase phase=6 tile=380 row_words=125 horizon=1702
2026-09-06T19:35:55.000163Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: prepared large physical exchange phase phase=7 transfers=62630 maximum_identical_destinations=1
2026-09-06T19:35:55.000220Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: optimized physical exchange schedule phase=7 initial_horizon=4115 selected_horizon=4115 endpoint_lower_bound=928 lower_bound_gap=3187 selected_kind="full-duplex" neighborhood_improvements=0
2026-09-06T19:35:55.065478Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: finished large physical exchange phase phase=7 tile=190 row_words=581 horizon=4115
2026-09-06T19:35:55.308855Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: prepared large physical exchange phase phase=8 transfers=4272 maximum_identical_destinations=1
2026-09-06T19:35:55.308883Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: optimized physical exchange schedule phase=8 initial_horizon=4011 selected_horizon=4011 endpoint_lower_bound=3072 lower_bound_gap=939 selected_kind="full-duplex" neighborhood_improvements=0
2026-09-06T19:35:55.317520Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: finished large physical exchange phase phase=8 tile=52 row_words=80 horizon=4011
2026-09-06T19:35:57.594963Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: scheduled operator-plan finalist finalist=4 mapped=false analytical_cycles=442888 analytical_exchange_cycles=164304 scheduled_exchange_cycles=102250 refined_cycles=380834
2026-09-06T19:35:58.057119Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: selected physically scheduled operator-plan finalist selected=4 mapped=false
2026-09-06T19:35:58.057149Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: package build phase finished phase="select_finalist" elapsed_ms=54749 success=true
2026-09-06T19:35:58.057192Z  INFO lowered graph for package construction logical_shards=136188 exchange_phases=21
2026-09-06T19:35:58.057946Z  INFO ipu_codegen.package.phase{phase="compile_runtime"}: package build phase finished phase="compile_runtime" elapsed_ms=0 success=true
2026-09-06T19:35:58.069851Z  INFO ipu_codegen.package.phase{phase="plan_kernels"}: package build phase finished phase="plan_kernels" elapsed_ms=11 success=true
2026-09-06T19:35:58.070781Z  INFO ipu_codegen.package.phase{phase="compile_kernels"}: package build phase finished phase="compile_kernels" elapsed_ms=0 success=true
2026-09-06T19:35:58.071777Z  INFO ipu_codegen.package.phase{phase="link_runtime"}: package build phase finished phase="link_runtime" elapsed_ms=0 success=true
2026-09-06T19:35:59.031320Z  INFO ipu_codegen.package.phase{phase="size_tile_code"}: package build phase finished phase="size_tile_code" elapsed_ms=6 success=true
2026-09-06T19:35:59.031350Z  INFO allocated package support memory linked_end=322884 profile_bytes=0 exchange_table_bytes=4896 host_code_bytes=4540 generated_code_bytes=3488 code_address=393216 standard_ranges=[(409600, 524288)]
2026-09-06T19:35:59.510183Z  INFO ipu_codegen.package.phase{phase="place_storage"}: package build phase finished phase="place_storage" elapsed_ms=478 success=true
2026-09-06T19:35:59.514096Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=0
2026-09-06T19:35:59.523894Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=1
2026-09-06T19:35:59.524466Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=1 transfers=1334 maximum_identical_destinations=1
2026-09-06T19:35:59.524477Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=1 initial_horizon=2913 selected_horizon=2913 endpoint_lower_bound=2784 lower_bound_gap=129 selected_kind="reused" neighborhood_improvements=0
2026-09-06T19:35:59.525470Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=1 tile=367 row_words=11 horizon=2913
2026-09-06T19:35:59.532837Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=2
2026-09-06T19:35:59.540683Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=3
2026-09-06T19:35:59.541130Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=3 transfers=1334 maximum_identical_destinations=1
2026-09-06T19:35:59.541136Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=3 initial_horizon=2913 selected_horizon=2913 endpoint_lower_bound=2784 lower_bound_gap=129 selected_kind="reused" neighborhood_improvements=0
2026-09-06T19:35:59.541946Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=3 tile=367 row_words=11 horizon=2913
2026-09-06T19:35:59.545840Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=4
2026-09-06T19:35:59.555089Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=5
2026-09-06T19:35:59.555650Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=5 transfers=1334 maximum_identical_destinations=1
2026-09-06T19:35:59.555659Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=5 initial_horizon=2913 selected_horizon=2913 endpoint_lower_bound=2784 lower_bound_gap=129 selected_kind="reused" neighborhood_improvements=0
2026-09-06T19:35:59.556632Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=5 tile=367 row_words=11 horizon=2913
2026-09-06T19:36:00.121620Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=6
2026-09-06T19:36:00.129365Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=6 transfers=18209 maximum_identical_destinations=1
2026-09-06T19:36:00.129379Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=6 initial_horizon=1702 selected_horizon=1702 endpoint_lower_bound=928 lower_bound_gap=774 selected_kind="reused" neighborhood_improvements=0
2026-09-06T19:36:00.145266Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=6 tile=380 row_words=125 horizon=1702
2026-09-06T19:36:05.970867Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=7
2026-09-06T19:36:06.000313Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=7 transfers=62630 maximum_identical_destinations=1
2026-09-06T19:36:06.000332Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=7 initial_horizon=4115 selected_horizon=4115 endpoint_lower_bound=928 lower_bound_gap=3187 selected_kind="reused" neighborhood_improvements=0
2026-09-06T19:36:06.064249Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=7 tile=190 row_words=581 horizon=4115
2026-09-06T19:36:06.187513Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=8
2026-09-06T19:36:06.195339Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=8 transfers=4272 maximum_identical_destinations=1
2026-09-06T19:36:06.195351Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=8 initial_horizon=4011 selected_horizon=4011 endpoint_lower_bound=3072 lower_bound_gap=939 selected_kind="reused" neighborhood_improvements=0
2026-09-06T19:36:06.204083Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=8 tile=52 row_words=80 horizon=4011
2026-09-06T19:36:06.227948Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=9
2026-09-06T19:36:06.321141Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=10
2026-09-06T19:36:06.399442Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=11
2026-09-06T19:36:06.499902Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=12
2026-09-06T19:36:06.603537Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=13
2026-09-06T19:36:06.685516Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=14
2026-09-06T19:36:06.759980Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=15
2026-09-06T19:36:06.838791Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=16
2026-09-06T19:36:06.912922Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=17
2026-09-06T19:36:07.013288Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=18
2026-09-06T19:36:07.119543Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=19
2026-09-06T19:36:07.221820Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=20
2026-09-06T19:36:07.235041Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: package build phase finished phase="lower_exchanges" elapsed_ms=7724 success=true
2026-09-06T19:36:13.339856Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=0
2026-09-06T19:36:13.354802Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=1
2026-09-06T19:36:13.355519Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=1 transfers=1334 maximum_identical_destinations=1
2026-09-06T19:36:13.355533Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=1 initial_horizon=2913 selected_horizon=2913 endpoint_lower_bound=2784 lower_bound_gap=129 selected_kind="reused" neighborhood_improvements=0
2026-09-06T19:36:13.356644Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=1 tile=367 row_words=11 horizon=2913
2026-09-06T19:36:13.361098Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=2
2026-09-06T19:36:13.370878Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=3
2026-09-06T19:36:13.371459Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=3 transfers=1334 maximum_identical_destinations=1
2026-09-06T19:36:13.371470Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=3 initial_horizon=2913 selected_horizon=2913 endpoint_lower_bound=2784 lower_bound_gap=129 selected_kind="reused" neighborhood_improvements=0
2026-09-06T19:36:13.372460Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=3 tile=367 row_words=11 horizon=2913
2026-09-06T19:36:13.376471Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=4
2026-09-06T19:36:13.385826Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=5
2026-09-06T19:36:13.386358Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=5 transfers=1334 maximum_identical_destinations=1
2026-09-06T19:36:13.386369Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=5 initial_horizon=2913 selected_horizon=2913 endpoint_lower_bound=2784 lower_bound_gap=129 selected_kind="reused" neighborhood_improvements=0
2026-09-06T19:36:13.387349Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=5 tile=367 row_words=11 horizon=2913
2026-09-06T19:36:14.034002Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=6
2026-09-06T19:36:14.041588Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=6 transfers=18209 maximum_identical_destinations=1
2026-09-06T19:36:14.041604Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=6 initial_horizon=1702 selected_horizon=1702 endpoint_lower_bound=928 lower_bound_gap=774 selected_kind="reused" neighborhood_improvements=0
2026-09-06T19:36:14.053382Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=6 tile=380 row_words=125 horizon=1702
2026-09-06T19:36:19.763899Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=7
2026-09-06T19:36:19.794564Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=7 transfers=62630 maximum_identical_destinations=1
2026-09-06T19:36:19.794584Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=7 initial_horizon=4115 selected_horizon=4115 endpoint_lower_bound=928 lower_bound_gap=3187 selected_kind="reused" neighborhood_improvements=0
2026-09-06T19:36:19.860323Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=7 tile=190 row_words=581 horizon=4115
2026-09-06T19:36:20.205121Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=8 transfers=4272 maximum_identical_destinations=1
2026-09-06T19:36:20.205148Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=8 initial_horizon=4011 selected_horizon=4011 endpoint_lower_bound=3072 lower_bound_gap=939 selected_kind="full-duplex" neighborhood_improvements=0
2026-09-06T19:36:20.214090Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=8 tile=52 row_words=80 horizon=4011
2026-09-06T19:36:20.239126Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=9
2026-09-06T19:36:20.333982Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=10
2026-09-06T19:36:20.438941Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=11
2026-09-06T19:36:20.546181Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=12
2026-09-06T19:36:20.651135Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=13
2026-09-06T19:36:20.761444Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=14
2026-09-06T19:36:20.864328Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=15
2026-09-06T19:36:20.969934Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=16
2026-09-06T19:36:21.080515Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=17
2026-09-06T19:36:21.153696Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=18
2026-09-06T19:36:21.226521Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=19
2026-09-06T19:36:21.329296Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=20
2026-09-06T19:36:21.373226Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: evaluated exchange placement finalist offset=20480 baseline_score=22698024960 score=12802351104 baseline_cycles=89650 candidate_cycles=89650 row_bytes=4896 row_capacity=16320 accepted=false
2026-09-06T19:36:21.401546Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: package build phase finished phase="optimize_exchange_placement" elapsed_ms=14166 success=true
2026-09-06T19:36:21.424457Z  INFO costed final placed program final_cycles=380834 final_exchange=102250
2026-09-06T19:36:22.025678Z  INFO ipu_codegen.package.phase{phase="prepare_tile_code"}: package build phase finished phase="prepare_tile_code" elapsed_ms=14 success=true
2026-09-06T19:36:22.056915Z  INFO ipu_codegen.package.phase{phase="emit_tile_code"}: package build phase finished phase="emit_tile_code" elapsed_ms=31 success=true
2026-09-06T19:36:22.255409Z  INFO ipu_codegen.package.phase{phase="build_tile_images"}: package build phase finished phase="build_tile_images" elapsed_ms=183 success=true
2026-09-06T19:36:22.432954Z  INFO writing application package tiles=1472
2026-09-06T19:36:22.471387Z  INFO application package written
2026-09-06T19:36:22.471416Z  INFO reading application package
2026-09-06T19:36:22.559477Z  INFO application package read tiles=1472 compiler=0.1.0
2026-09-06T19:36:22.562288Z  INFO waiting for hardware ownership path=artifacts/layout-sweep/device.lock
2026-09-06T19:36:22.562305Z  INFO acquired hardware ownership path=artifacts/layout-sweep/device.lock
2026-09-06T19:36:22.562311Z  INFO opening IPU device path="/dev/ipu0"
2026-09-06T19:36:22.562348Z  INFO IPU device attached path=/dev/ipu0
2026-09-06T19:36:22.562351Z  INFO initializing IPU device
2026-09-06T19:36:22.570115Z  INFO IPU device initialized
2026-09-06T19:36:22.570137Z  INFO replaying device configuration register_writes=2003
2026-09-06T19:36:22.586592Z  INFO loading application tile_count=1472 final_mark=23
2026-09-06T19:36:22.820177Z  INFO application loaded and initial synchronization completed tile_count=1472
2026-09-06T19:36:33.589981Z  INFO starting host exchange session startup_mark=23
2026-09-06T19:36:33.590027Z  INFO attaching host exchange pages pages=2
2026-09-06T19:36:33.590714Z  INFO host exchange session started
2026-09-06T19:36:33.592474Z  INFO invoking streaming host exchange call call="initialize" command=0 phases=132
2026-09-06T19:36:33.714142Z  INFO invoking streaming host exchange call call="run" command=0 phases=7
checkpoint=0 operation=0 tensors=1 samples=256 maximumAbsoluteError=0.001953
checkpoint=1 operation=1 tensors=1 samples=256 maximumAbsoluteError=0.001141
checkpoint=2 operation=2 tensors=1 samples=256 maximumAbsoluteError=0.001953
checkpoint=3 operation=6 tensors=1 samples=256 maximumAbsoluteError=0.000088
diagnosticCheckpoints=4 sampleLimit=256 numericalTest=PASS
package=artifacts/layout-sweep/attention-unpack-gaussian/model.ipuexe tiles=1472 hardwareTest=PASS