2026-09-06T16:50:14.360911Z  INFO retained operator-plan finalist finalist=0 values=11 operations=7 estimated_cycles=450230 estimated_exchange_cycles=173640 exchange_row_bytes=35532 peak_standard_bytes=76236 peak_interleaved_bytes=114688 peak_total_bytes=166604 maximum_standard_allocation_bytes=16384 active_tile_counts={12, 64} padding_group_counts={} conversion_sources=[]
2026-09-06T16:50:14.361052Z  INFO retained operator-plan finalist finalist=1 values=11 operations=7 estimated_cycles=460868 estimated_exchange_cycles=191640 exchange_row_bytes=38796 peak_standard_bytes=79500 peak_interleaved_bytes=53248 peak_total_bytes=132748 maximum_standard_allocation_bytes=16384 active_tile_counts={12, 30, 64} padding_group_counts={} conversion_sources=[]
2026-09-06T16:50:14.361076Z  INFO retained operator-plan finalist finalist=2 values=11 operations=7 estimated_cycles=462949 estimated_exchange_cycles=187440 exchange_row_bytes=38244 peak_standard_bytes=87396 peak_interleaved_bytes=53248 peak_total_bytes=132196 maximum_standard_allocation_bytes=16384 active_tile_counts={12, 32, 64} padding_group_counts={} conversion_sources=[]
2026-09-06T16:50:14.361140Z  INFO retained operator-plan finalist finalist=3 values=12 operations=8 estimated_cycles=463488 estimated_exchange_cycles=187600 exchange_row_bytes=38280 peak_standard_bytes=78984 peak_interleaved_bytes=85824 peak_total_bytes=154504 maximum_standard_allocation_bytes=16384 active_tile_counts={12, 30, 60, 64} padding_group_counts={} conversion_sources=[Some(OperationId(1))]
2026-09-06T16:50:14.367713Z  INFO ipu_codegen.package.phase{phase="lower_mid"}: package build phase finished phase="lower_mid" elapsed_ms=489 success=true
2026-09-06T16:50:14.846659Z  INFO screened tile mappings by exchange resource load candidates=15 baseline_cycles=63344 candidate_cycles=63344 baseline_pressure=61298 candidate_pressure=61298
2026-09-06T16:50:14.858599Z  INFO modelled expanded operator plan finalist=0 modelled_cycles=333088 estimated_cycles=354824 estimated_exchange_cycles=94080
2026-09-06T16:50:14.858718Z  INFO screened tile mappings by exchange resource load candidates=19 baseline_cycles=69296 candidate_cycles=69296 baseline_pressure=64224 candidate_pressure=64224
2026-09-06T16:50:14.862712Z  INFO modelled expanded operator plan finalist=2 modelled_cycles=394772 estimated_cycles=455388 estimated_exchange_cycles=140712
2026-09-06T16:50:14.892907Z  INFO screened tile mappings by exchange resource load candidates=23 baseline_cycles=68572 candidate_cycles=68572 baseline_pressure=64804 candidate_pressure=64804
2026-09-06T16:50:14.896851Z  INFO modelled expanded operator plan finalist=3 modelled_cycles=339784 estimated_cycles=386444 estimated_exchange_cycles=125432
2026-09-06T16:50:14.904600Z  INFO screened tile mappings by exchange resource load candidates=23 baseline_cycles=71376 candidate_cycles=71376 baseline_pressure=67290 candidate_pressure=67290
2026-09-06T16:50:14.907998Z  INFO modelled expanded operator plan finalist=1 modelled_cycles=358102 estimated_cycles=419166 estimated_exchange_cycles=145040
2026-09-06T16:50:14.996590Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: prepared large physical exchange phase phase=1 transfers=1038 maximum_identical_destinations=1
2026-09-06T16:50:14.996637Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: optimized physical exchange schedule phase=1 initial_horizon=1121 selected_horizon=1121 endpoint_lower_bound=736 lower_bound_gap=385 selected_kind="full-duplex" neighborhood_improvements=0
2026-09-06T16:50:14.998231Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: finished large physical exchange phase phase=1 tile=49 row_words=162 horizon=1121
2026-09-06T16:50:15.162653Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: scheduled operator-plan finalist finalist=0 mapped=false analytical_cycles=354824 analytical_exchange_cycles=94080 scheduled_exchange_cycles=74373 refined_cycles=335117
2026-09-06T16:50:15.174797Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: selected physically scheduled operator-plan finalist selected=0 mapped=false
2026-09-06T16:50:15.174842Z  INFO ipu_codegen.package.phase{phase="select_finalist"}: package build phase finished phase="select_finalist" elapsed_ms=807 success=true
2026-09-06T16:50:15.174853Z  INFO lowered graph for package construction logical_shards=5300 exchange_phases=15
2026-09-06T16:50:15.175104Z  INFO ipu_codegen.package.phase{phase="compile_runtime"}: package build phase finished phase="compile_runtime" elapsed_ms=0 success=true
2026-09-06T16:50:15.175736Z  INFO ipu_codegen.package.phase{phase="plan_kernels"}: package build phase finished phase="plan_kernels" elapsed_ms=0 success=true
2026-09-06T16:50:15.176266Z  INFO ipu_codegen.package.phase{phase="compile_kernels"}: compiling kernel source=/srv/home/gc-sdk/ipu-stack/crates/ipu-tests/../../device/attention_softmax_f16.S name="attention_softmax_d72_p64_tail" target=ipu21
2026-09-06T16:50:15.232472Z  INFO ipu_codegen.package.phase{phase="compile_kernels"}: kernel artifact created object=/srv/home/.cache/ipu-stack/kernels/db5be4b610c87995bdf67a480f8ff83826d4773683a0c7ec869749c2513bf74d/kernel.o metadata=/srv/home/.cache/ipu-stack/kernels/db5be4b610c87995bdf67a480f8ff83826d4773683a0c7ec869749c2513bf74d/kernel.json
2026-09-06T16:50:15.232810Z  INFO ipu_codegen.package.phase{phase="compile_kernels"}: compiling kernel source=/srv/home/gc-sdk/ipu-stack/crates/ipu-tests/../../device/attention_softmax_f16.S name="attention_softmax_d72_p64_full" target=ipu21
2026-09-06T16:50:15.289742Z  INFO ipu_codegen.package.phase{phase="compile_kernels"}: kernel artifact created object=/srv/home/.cache/ipu-stack/kernels/5421fe0cead58d07da50e55f51afe12ec6827dcd483f97d1c83c1dcb2fa2d8fd/kernel.o metadata=/srv/home/.cache/ipu-stack/kernels/5421fe0cead58d07da50e55f51afe12ec6827dcd483f97d1c83c1dcb2fa2d8fd/kernel.json
2026-09-06T16:50:15.289991Z  INFO ipu_codegen.package.phase{phase="compile_kernels"}: package build phase finished phase="compile_kernels" elapsed_ms=114 success=true
2026-09-06T16:50:15.290499Z  INFO ipu_codegen.package.phase{phase="link_runtime"}: package build phase finished phase="link_runtime" elapsed_ms=0 success=true
2026-09-06T16:50:15.313678Z  INFO ipu_codegen.package.phase{phase="size_tile_code"}: package build phase finished phase="size_tile_code" elapsed_ms=3 success=true
2026-09-06T16:50:15.313727Z  INFO allocated package support memory linked_end=320900 profile_bytes=0 exchange_table_bytes=3852 host_code_bytes=1076 generated_code_bytes=2148 code_address=321984 standard_ranges=[(393216, 524288)]
2026-09-06T16:50:15.322486Z  INFO ipu_codegen.package.phase{phase="place_storage"}: package build phase finished phase="place_storage" elapsed_ms=8 success=true
2026-09-06T16:50:15.334308Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=0
2026-09-06T16:50:15.369094Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=1
2026-09-06T16:50:15.369694Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=1 transfers=1038 maximum_identical_destinations=1
2026-09-06T16:50:15.369706Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=1 initial_horizon=1121 selected_horizon=1121 endpoint_lower_bound=736 lower_bound_gap=385 selected_kind="reused" neighborhood_improvements=0
2026-09-06T16:50:15.370705Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=1 tile=49 row_words=162 horizon=1121
2026-09-06T16:50:15.394197Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=2
2026-09-06T16:50:15.400627Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=3
2026-09-06T16:50:15.405261Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=4
2026-09-06T16:50:15.409705Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=5
2026-09-06T16:50:15.413764Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=6
2026-09-06T16:50:15.417821Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=7
2026-09-06T16:50:15.421659Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=8
2026-09-06T16:50:15.425295Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=9
2026-09-06T16:50:15.429126Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=10
2026-09-06T16:50:15.432869Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=11
2026-09-06T16:50:15.436662Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=12
2026-09-06T16:50:15.440261Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=13
2026-09-06T16:50:15.444380Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=14
2026-09-06T16:50:15.445074Z  INFO ipu_codegen.package.phase{phase="lower_exchanges"}: package build phase finished phase="lower_exchanges" elapsed_ms=122 success=true
2026-09-06T16:50:15.472634Z  INFO ipu_codegen.package.phase{phase="optimize_exchange_placement"}: package build phase finished phase="optimize_exchange_placement" elapsed_ms=27 success=true
2026-09-06T16:50:15.473355Z  INFO costed final placed program final_cycles=335117 final_exchange=74373
2026-09-06T16:50:15.484615Z  INFO ipu_codegen.package.phase{phase="prepare_tile_code"}: package build phase finished phase="prepare_tile_code" elapsed_ms=4 success=true
2026-09-06T16:50:15.491503Z  INFO ipu_codegen.package.phase{phase="emit_tile_code"}: package build phase finished phase="emit_tile_code" elapsed_ms=6 success=true
2026-09-06T16:50:15.618825Z  INFO ipu_codegen.package.phase{phase="build_tile_images"}: package build phase finished phase="build_tile_images" elapsed_ms=124 success=true
2026-09-06T16:50:15.629720Z  INFO writing application package tiles=1472
2026-09-06T16:50:15.645191Z  INFO application package written
2026-09-06T16:50:15.646102Z  INFO reading application package
2026-09-06T16:50:15.667963Z  INFO application package read tiles=1472 compiler=0.1.0
2026-09-06T16:50:15.668716Z  INFO waiting for hardware ownership path=artifacts/layout-sweep/device.lock
2026-09-06T16:50:15.668727Z  INFO acquired hardware ownership path=artifacts/layout-sweep/device.lock
2026-09-06T16:50:15.668732Z  INFO opening IPU device path="/dev/ipu0"
2026-09-06T16:50:15.668771Z  INFO IPU device attached path=/dev/ipu0
2026-09-06T16:50:15.668774Z  INFO initializing IPU device
2026-09-06T16:50:15.676756Z  INFO IPU device initialized
2026-09-06T16:50:15.676761Z  INFO replaying device configuration register_writes=2003
2026-09-06T16:50:15.680849Z  INFO loading application tile_count=1472 final_mark=23
2026-09-06T16:50:15.884643Z  INFO application loaded and initial synchronization completed tile_count=1472
2026-09-06T16:50:16.105400Z  INFO starting host exchange session startup_mark=23
2026-09-06T16:50:16.105431Z  INFO attaching host exchange pages pages=2
2026-09-06T16:50:16.106224Z  INFO host exchange session started
2026-09-06T16:50:16.106236Z  INFO invoking streaming host exchange call call="initialize" command=0 phases=24
2026-09-06T16:50:16.110533Z  INFO invoking streaming host exchange call call="run" command=0 phases=5
checkpoint=0 operation=0 tensors=1 samples=256 maximumAbsoluteError=0.000244
checkpoint=1 operation=1 tensors=1 samples=256 maximumAbsoluteError=0.000244
checkpoint=2 operation=2 tensors=1 samples=256 maximumAbsoluteError=0.000244
checkpoint=3 operation=6 tensors=1 samples=256 maximumAbsoluteError=0.000011
diagnosticCheckpoints=4 sampleLimit=256 numericalTest=PASS
package=artifacts/layout-sweep/attention-tail-fixed-diagnostic/model.ipuexe tiles=1472 hardwareTest=PASS