2026-09-06T20:37:29.928283Z  INFO retained operator-plan finalist finalist=0 values=11 operations=7 estimated_cycles=507592 estimated_exchange_cycles=217320 exchange_row_bytes=47456 peak_standard_bytes=354656 peak_interleaved_bytes=52480 peak_total_bytes=399712 maximum_standard_allocation_bytes=122880 active_tile_counts={192, 460, 1472} padding_group_counts={} conversion_sources=[]
2026-09-06T20:37:29.950293Z  INFO retained operator-plan finalist finalist=1 values=13 operations=9 estimated_cycles=604015 estimated_exchange_cycles=202200 exchange_row_bytes=44316 peak_standard_bytes=290076 peak_interleaved_bytes=180224 peak_total_bytes=470300 maximum_standard_allocation_bytes=122880 active_tile_counts={192, 460, 1380, 1472} padding_group_counts={} conversion_sources=[Some(OperationId(1)), Some(OperationId(2))]
2026-09-06T20:37:29.972757Z  INFO retained operator-plan finalist finalist=2 values=11 operations=7 estimated_cycles=628377 estimated_exchange_cycles=218600 exchange_row_bytes=47744 peak_standard_bytes=213632 peak_interleaved_bytes=52864 peak_total_bytes=244352 maximum_standard_allocation_bytes=122880 active_tile_counts={192, 480, 1472} padding_group_counts={16} conversion_sources=[]
2026-09-06T20:37:29.976613Z  INFO retained operator-plan finalist finalist=3 values=13 operations=9 estimated_cycles=758305 estimated_exchange_cycles=329400 exchange_row_bytes=72412 peak_standard_bytes=287452 peak_interleaved_bytes=50560 peak_total_bytes=324124 maximum_standard_allocation_bytes=122880 active_tile_counts={192, 360, 480, 1440, 1472} padding_group_counts={16} conversion_sources=[Some(OperationId(1)), Some(OperationId(2))]
2026-09-06T20:37:32.492854Z  INFO retained operator-plan finalist finalist=0 values=11 operations=7 estimated_cycles=507592 estimated_exchange_cycles=217320 exchange_row_bytes=47456 peak_standard_bytes=354656 peak_interleaved_bytes=52480 peak_total_bytes=399712 maximum_standard_allocation_bytes=122880 active_tile_counts={192, 460, 1472} padding_group_counts={} conversion_sources=[]
2026-09-06T20:37:32.512934Z  INFO retained operator-plan finalist finalist=1 values=11 operations=7 estimated_cycles=507592 estimated_exchange_cycles=217320 exchange_row_bytes=47456 peak_standard_bytes=342368 peak_interleaved_bytes=61056 peak_total_bytes=399712 maximum_standard_allocation_bytes=122880 active_tile_counts={192, 460, 1472} padding_group_counts={} conversion_sources=[]
2026-09-06T20:37:32.532929Z  INFO retained operator-plan finalist finalist=2 values=11 operations=7 estimated_cycles=512614 estimated_exchange_cycles=224520 exchange_row_bytes=49076 peak_standard_bytes=353204 peak_interleaved_bytes=51200 peak_total_bytes=395188 maximum_standard_allocation_bytes=122880 active_tile_counts={192, 368, 1472} padding_group_counts={} conversion_sources=[]
2026-09-06T20:37:32.554269Z  INFO retained operator-plan finalist finalist=3 values=11 operations=7 estimated_cycles=613466 estimated_exchange_cycles=299080 exchange_row_bytes=65852 peak_standard_bytes=240956 peak_interleaved_bytes=60416 peak_total_bytes=281916 maximum_standard_allocation_bytes=122880 active_tile_counts={192, 207, 1472} padding_group_counts={} conversion_sources=[]
2026-09-06T20:37:32.644903Z  INFO ipu_codegen.package.phase{phase="lower_mid"}: package build phase finished phase="lower_mid" elapsed_ms=5903 success=true
2026-09-06T20:37:50.062595Z  INFO screened tile mappings by exchange resource load candidates=89 baseline_cycles=85696 candidate_cycles=85696 baseline_pressure=78276 candidate_pressure=78276
2026-09-06T20:37:50.152028Z  INFO modelled expanded operator plan finalist=1 modelled_cycles=377950 estimated_cycles=453518 estimated_exchange_cycles=166664
2026-09-06T20:37:51.130688Z  INFO screened tile mappings by exchange resource load candidates=89 baseline_cycles=85696 candidate_cycles=85696 baseline_pressure=77334 candidate_pressure=77334
2026-09-06T20:37:51.268756Z  INFO modelled expanded operator plan finalist=6 modelled_cycles=352920 estimated_cycles=408008 estimated_exchange_cycles=146184
2026-09-06T20:37:51.500645Z  INFO screened tile mappings by exchange resource load candidates=65 baseline_cycles=119584 candidate_cycles=119584 baseline_pressure=98021 candidate_pressure=98021
2026-09-06T20:37:51.616125Z  INFO screened tile mappings by exchange resource load candidates=65 baseline_cycles=88864 candidate_cycles=85408 baseline_pressure=79358 candidate_pressure=75902
2026-09-06T20:37:51.628904Z  INFO screened tile mappings by exchange resource load candidates=65 baseline_cycles=88864 candidate_cycles=85408 baseline_pressure=78220 candidate_pressure=74764
2026-09-06T20:37:51.636470Z  INFO modelled expanded operator plan finalist=11 modelled_cycles=461826 estimated_cycles=610866 estimated_exchange_cycles=274024
2026-09-06T20:37:51.754197Z  INFO modelled expanded operator plan finalist=9 modelled_cycles=380440 estimated_cycles=456520 estimated_exchange_cycles=166888
2026-09-06T20:37:51.754812Z  INFO modelled expanded operator plan finalist=8 modelled_cycles=358912 estimated_cycles=420272 estimated_exchange_cycles=152168
2026-09-06T20:37:52.203336Z  INFO screened tile mappings by exchange resource load candidates=65 baseline_cycles=119584 candidate_cycles=119584 baseline_pressure=95902 candidate_pressure=95902
2026-09-06T20:37:52.327560Z  INFO modelled expanded operator plan finalist=10 modelled_cycles=425987 estimated_cycles=536627 estimated_exchange_cycles=235624
2026-09-06T20:37:54.278216Z  INFO screened tile mappings by exchange resource load candidates=89 baseline_cycles=85696 candidate_cycles=85696 baseline_pressure=78276 candidate_pressure=78276
2026-09-06T20:37:54.411547Z  INFO modelled expanded operator plan finalist=7 modelled_cycles=370318 estimated_cycles=445886 estimated_exchange_cycles=166664
2026-09-06T20:37:54.677637Z  INFO screened tile mappings by exchange resource load candidates=89 baseline_cycles=85696 candidate_cycles=85696 baseline_pressure=77334 candidate_pressure=77334
2026-09-06T20:37:54.806753Z  INFO modelled expanded operator plan finalist=0 modelled_cycles=360552 estimated_cycles=415640 estimated_exchange_cycles=146184
2026-09-06T20:37:55.706516Z  INFO screened tile mappings by exchange resource load candidates=93 baseline_cycles=92128 candidate_cycles=92128 baseline_pressure=73641 candidate_pressure=73641
2026-09-06T20:37:55.860685Z  INFO modelled expanded operator plan finalist=2 modelled_cycles=488452 estimated_cycles=581252 estimated_exchange_cycles=189128
2026-09-06T20:37:56.571077Z  INFO screened tile mappings by exchange resource load candidates=93 baseline_cycles=92128 candidate_cycles=92128 baseline_pressure=73987 candidate_pressure=73987
2026-09-06T20:37:56.741752Z  INFO modelled expanded operator plan finalist=3 modelled_cycles=494100 estimated_cycles=592020 estimated_exchange_cycles=194248
2026-09-06T20:38:08.651488Z  INFO screened tile mappings by exchange resource load candidates=123 baseline_cycles=86072 candidate_cycles=86072 baseline_pressure=78334 candidate_pressure=78334
2026-09-06T20:38:08.835959Z  INFO modelled expanded operator plan finalist=4 modelled_cycles=790192 estimated_cycles=1294680 estimated_exchange_cycles=595960
2026-09-06T20:38:14.580154Z  INFO screened tile mappings by exchange resource load candidates=171 baseline_cycles=134296 candidate_cycles=134296 baseline_pressure=110893 candidate_pressure=110893
2026-09-06T20:38:14.722258Z  INFO modelled expanded operator plan finalist=5 modelled_cycles=691872 estimated_cycles=1077864 estimated_exchange_cycles=525688
2026-09-06T20:38:14.752993Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: prepared large physical exchange phase phase=1 transfers=1334 maximum_identical_destinations=1
2026-09-06T20:38:14.753024Z  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
2026-09-06T20:38:14.754094Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: finished large physical exchange phase phase=1 tile=367 row_words=11 horizon=2913
2026-09-06T20:38:14.784715Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: prepared large physical exchange phase phase=3 transfers=1288 maximum_identical_destinations=1
2026-09-06T20:38:14.784747Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: optimized physical exchange schedule phase=3 initial_horizon=2887 selected_horizon=2887 endpoint_lower_bound=2784 lower_bound_gap=103 selected_kind="full-duplex" neighborhood_improvements=0
2026-09-06T20:38:14.785698Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: finished large physical exchange phase phase=3 tile=919 row_words=11 horizon=2887
2026-09-06T20:38:14.804362Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: prepared large physical exchange phase phase=5 transfers=1334 maximum_identical_destinations=1
2026-09-06T20:38:14.804381Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: optimized physical exchange schedule phase=5 initial_horizon=2897 selected_horizon=2897 endpoint_lower_bound=2784 lower_bound_gap=113 selected_kind="full-duplex" neighborhood_improvements=0
2026-09-06T20:38:14.804994Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: finished large physical exchange phase phase=5 tile=1291 row_words=11 horizon=2897
2026-09-06T20:38:23.782435Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: prepared large physical exchange phase phase=6 transfers=84731 maximum_identical_destinations=1
2026-09-06T20:38:23.782468Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: optimized physical exchange schedule phase=6 initial_horizon=11692 selected_horizon=11692 endpoint_lower_bound=6688 lower_bound_gap=5004 selected_kind="full-duplex" neighborhood_improvements=0
2026-09-06T20:38:23.834640Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: finished large physical exchange phase phase=6 tile=8 row_words=693 horizon=11692
2026-09-06T20:38:25.875601Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: prepared large physical exchange phase phase=7 transfers=3840 maximum_identical_destinations=1
2026-09-06T20:38:25.875631Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: optimized physical exchange schedule phase=7 initial_horizon=31310 selected_horizon=31310 endpoint_lower_bound=30720 lower_bound_gap=590 selected_kind="full-duplex" neighborhood_improvements=0
2026-09-06T20:38:25.913675Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: finished large physical exchange phase phase=7 tile=91 row_words=370 horizon=31310
2026-09-06T20:38:26.010949Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: scheduled operator-plan finalist finalist=6 mapped=false analytical_cycles=408008 analytical_exchange_cycles=146184 scheduled_exchange_cycles=97670 refined_cycles=359494
2026-09-06T20:38:26.285424Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: selected physically scheduled operator-plan finalist selected=6 mapped=false
2026-09-06T20:38:26.285448Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: package build phase finished phase="select_finalist" elapsed_ms=53640 success=true
2026-09-06T20:38:26.285457Z  INFO lowered graph for package construction logical_shards=38156 exchange_phases=9
2026-09-06T20:38:26.285989Z  INFO ipu_codegen.package.phase{phase="compile_runtime"}: package build phase finished phase="compile_runtime" elapsed_ms=0 success=true
2026-09-06T20:38:26.288333Z  INFO ipu_codegen.package.phase{phase="plan_kernels"}: package build phase finished phase="plan_kernels" elapsed_ms=2 success=true
2026-09-06T20:38:26.289244Z  INFO ipu_codegen.package.phase{phase="compile_kernels"}: package build phase finished phase="compile_kernels" elapsed_ms=0 success=true
2026-09-06T20:38:26.289586Z  INFO ipu_codegen.package.phase{phase="link_runtime"}: package build phase finished phase="link_runtime" elapsed_ms=0 success=true
2026-09-06T20:38:27.050229Z  INFO ipu_codegen.package.phase{phase="size_tile_code"}: package build phase finished phase="size_tile_code" elapsed_ms=9 success=true
2026-09-06T20:38:27.050264Z  INFO allocated package support memory linked_end=323332 profile_bytes=0 exchange_table_bytes=4468 host_code_bytes=4540 generated_code_bytes=1972 code_address=397824 standard_ranges=[(409600, 524288)]
2026-09-06T20:38:27.213633Z  INFO ipu_codegen.package.phase{phase="place_storage"}: package build phase finished phase="place_storage" elapsed_ms=163 success=true
2026-09-06T20:38:27.217706Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=0
2026-09-06T20:38:27.227864Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=1
2026-09-06T20:38:27.228447Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=1 transfers=1334 maximum_identical_destinations=1
2026-09-06T20:38:27.228456Z  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
2026-09-06T20:38:27.229460Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=1 tile=367 row_words=11 horizon=2913
2026-09-06T20:38:27.233450Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=2
2026-09-06T20:38:27.242856Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=3
2026-09-06T20:38:27.243413Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=3 transfers=1288 maximum_identical_destinations=1
2026-09-06T20:38:27.243423Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=3 initial_horizon=2887 selected_horizon=2887 endpoint_lower_bound=2784 lower_bound_gap=103 selected_kind="reused" neighborhood_improvements=0
2026-09-06T20:38:27.244371Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=3 tile=919 row_words=11 horizon=2887
2026-09-06T20:38:27.248553Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=4
2026-09-06T20:38:27.258495Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=5
2026-09-06T20:38:27.259220Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=5 transfers=1334 maximum_identical_destinations=1
2026-09-06T20:38:27.259234Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=5 initial_horizon=2897 selected_horizon=2897 endpoint_lower_bound=2784 lower_bound_gap=113 selected_kind="reused" neighborhood_improvements=0
2026-09-06T20:38:27.260159Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=5 tile=1291 row_words=11 horizon=2897
2026-09-06T20:38:35.471084Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=6
2026-09-06T20:38:35.522228Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=6 transfers=84731 maximum_identical_destinations=1
2026-09-06T20:38:35.522253Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=6 initial_horizon=11692 selected_horizon=11692 endpoint_lower_bound=6688 lower_bound_gap=5004 selected_kind="reused" neighborhood_improvements=0
2026-09-06T20:38:35.602979Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=6 tile=8 row_words=693 horizon=11692
2026-09-06T20:38:36.997453Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=7
2026-09-06T20:38:37.083856Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=7 transfers=3840 maximum_identical_destinations=1
2026-09-06T20:38:37.083885Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=7 initial_horizon=31310 selected_horizon=31310 endpoint_lower_bound=30720 lower_bound_gap=590 selected_kind="reused" neighborhood_improvements=0
2026-09-06T20:38:37.144696Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=7 tile=91 row_words=370 horizon=31310
2026-09-06T20:38:37.231104Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=8
2026-09-06T20:38:37.239565Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: package build phase finished phase="lower_exchanges" elapsed_ms=10025 success=true
2026-09-06T20:38:39.430577Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: package build phase finished phase="optimize_exchange_placement" elapsed_ms=2190 success=true
2026-09-06T20:38:39.434459Z  INFO costed final placed program final_cycles=359494 final_exchange=97670
2026-09-06T20:38:40.037811Z  INFO ipu_codegen.package.phase{phase="prepare_tile_code"}: package build phase finished phase="prepare_tile_code" elapsed_ms=8 success=true
2026-09-06T20:38:40.051862Z  INFO ipu_codegen.package.phase{phase="emit_tile_code"}: package build phase finished phase="emit_tile_code" elapsed_ms=14 success=true
2026-09-06T20:38:40.232677Z  INFO ipu_codegen.package.phase{phase="build_tile_images"}: package build phase finished phase="build_tile_images" elapsed_ms=175 success=true
2026-09-06T20:38:40.348785Z  INFO writing application package tiles=1472
2026-09-06T20:38:40.388028Z  INFO application package written
2026-09-06T20:38:40.389111Z  INFO reading application package
2026-09-06T20:38:40.466456Z  INFO application package read tiles=1472 compiler=0.1.0
2026-09-06T20:38:40.468960Z  INFO waiting for hardware ownership path=artifacts/layout-sweep/device.lock
2026-09-06T20:38:40.468971Z  INFO acquired hardware ownership path=artifacts/layout-sweep/device.lock
2026-09-06T20:38:40.468976Z  INFO opening IPU device path="/dev/ipu0"
2026-09-06T20:38:40.469004Z  INFO IPU device attached path=/dev/ipu0
2026-09-06T20:38:40.469007Z  INFO initializing IPU device
2026-09-06T20:38:40.476945Z  INFO IPU device initialized
2026-09-06T20:38:40.476950Z  INFO replaying device configuration register_writes=2003
2026-09-06T20:38:40.490669Z  INFO loading application tile_count=1472 final_mark=23
2026-09-06T20:38:40.720275Z  INFO application loaded and initial synchronization completed tile_count=1472
2026-09-06T20:38:53.437474Z  INFO starting host exchange session startup_mark=23
2026-09-06T20:38:53.437514Z  INFO attaching host exchange pages pages=2
2026-09-06T20:38:53.438223Z  INFO host exchange session started
2026-09-06T20:38:53.439945Z  INFO invoking streaming host exchange call call="initialize" command=0 phases=132
2026-09-06T20:38:53.620921Z  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=0.000109
diagnosticCheckpoints=4 sampleLimit=256 numericalTest=PASS
package=artifacts/layout-sweep/attention-panel-pack-gaussian/model.ipuexe tiles=1472 hardwareTest=PASS