2026-09-06T14:55:42.389789Z  INFO retained operator-plan finalist finalist=0 values=7 operations=4 estimated_cycles=234866 estimated_exchange_cycles=102520 exchange_row_bytes=22412 peak_standard_bytes=224140 peak_interleaved_bytes=87040 peak_total_bytes=272268 maximum_standard_allocation_bytes=180224 active_tile_counts={1404, 1470} padding_group_counts={} conversion_sources=[Some(OperationId(2))]
2026-09-06T14:55:42.395812Z  INFO retained operator-plan finalist finalist=1 values=7 operations=4 estimated_cycles=236830 estimated_exchange_cycles=109080 exchange_row_bytes=23888 peak_standard_bytes=160080 peak_interleaved_bytes=87040 peak_total_bytes=239440 maximum_standard_allocation_bytes=114688 active_tile_counts={1404, 1472} padding_group_counts={} conversion_sources=[Some(OperationId(2))]
2026-09-06T14:55:42.401725Z  INFO retained operator-plan finalist finalist=2 values=7 operations=4 estimated_cycles=237698 estimated_exchange_cycles=106840 exchange_row_bytes=23384 peak_standard_bytes=224088 peak_interleaved_bytes=53248 peak_total_bytes=272216 maximum_standard_allocation_bytes=180224 active_tile_counts={1458, 1470} padding_group_counts={} conversion_sources=[Some(OperationId(2))]
2026-09-06T14:55:42.407633Z  INFO retained operator-plan finalist finalist=3 values=7 operations=4 estimated_cycles=239662 estimated_exchange_cycles=113400 exchange_row_bytes=24860 peak_standard_bytes=160028 peak_interleaved_bytes=79360 peak_total_bytes=239388 maximum_standard_allocation_bytes=114688 active_tile_counts={1458, 1472} padding_group_counts={} conversion_sources=[Some(OperationId(2))]
2026-09-06T14:55:42.927403Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="lower_mid"}: package build phase finished phase="lower_mid" elapsed_ms=13727 success=true
2026-09-06T14:55:45.311538Z  INFO eliminated finite GEMM padding clears using load-time SRAM initialization removed=24
2026-09-06T14:55:45.366727Z  INFO eliminated finite GEMM padding clears using load-time SRAM initialization removed=24
2026-09-06T14:55:45.471571Z  INFO eliminated finite GEMM padding clears using load-time SRAM initialization removed=36
2026-09-06T14:55:45.744028Z  INFO eliminated finite GEMM padding clears using load-time SRAM initialization removed=36
2026-09-06T14:55:50.927777Z  INFO screened tile mappings by exchange resource load candidates=52 baseline_cycles=37152 candidate_cycles=37152 baseline_pressure=32228 candidate_pressure=32228
2026-09-06T14:55:51.050886Z  INFO modelled expanded operator plan finalist=3 modelled_cycles=159308 estimated_cycles=206964 estimated_exchange_cycles=87208
2026-09-06T14:55:51.709326Z  INFO screened tile mappings by exchange resource load candidates=74 baseline_cycles=41920 candidate_cycles=41920 baseline_pressure=29556 candidate_pressure=29556
2026-09-06T14:55:51.805512Z  INFO modelled expanded operator plan finalist=2 modelled_cycles=168008 estimated_cycles=205680 estimated_exchange_cycles=81992
2026-09-06T14:55:52.243645Z  INFO screened tile mappings by exchange resource load candidates=75 baseline_cycles=37600 candidate_cycles=37600 baseline_pressure=33584 candidate_pressure=33584
2026-09-06T14:55:52.338500Z  INFO modelled expanded operator plan finalist=1 modelled_cycles=163500 estimated_cycles=193588 estimated_exchange_cycles=70088
2026-09-06T14:55:52.863916Z  INFO screened tile mappings by exchange resource load candidates=97 baseline_cycles=40160 candidate_cycles=40160 baseline_pressure=30824 candidate_pressure=30824
2026-09-06T14:55:52.954871Z  INFO modelled expanded operator plan finalist=0 modelled_cycles=169992 estimated_cycles=192304 estimated_exchange_cycles=64872
2026-09-06T14:55:54.291474Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="select_finalist"}: prepared large physical exchange phase phase=1 transfers=32280 maximum_identical_destinations=1
2026-09-06T14:55:54.291524Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="select_finalist"}: optimized physical exchange schedule phase=1 initial_horizon=9994 selected_horizon=9600 endpoint_lower_bound=7776 lower_bound_gap=1824 selected_kind="critical-neighborhood" neighborhood_improvements=1
2026-09-06T14:55:54.320507Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="select_finalist"}: finished large physical exchange phase phase=1 tile=705 row_words=140 horizon=9600
2026-09-06T14:55:59.121066Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="select_finalist"}: compared ordinary and paired exchange schedules phase=2 candidates=4417 ordinary_horizon=29091 paired_horizon=22790 use_paired=true
2026-09-06T14:55:59.218180Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="select_finalist"}: prepared large physical exchange phase phase=2 transfers=5814 maximum_identical_destinations=1
2026-09-06T14:55:59.218247Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="select_finalist"}: optimized physical exchange schedule phase=2 initial_horizon=26271 selected_horizon=22790 endpoint_lower_bound=17280 lower_bound_gap=5510 selected_kind="critical-neighborhood" neighborhood_improvements=3
2026-09-06T14:55:59.259990Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="select_finalist"}: finished large physical exchange phase phase=2 tile=934 row_words=227 horizon=22790
2026-09-06T14:56:43.902993Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="select_finalist"}: prepared large physical exchange phase phase=3 transfers=155880 maximum_identical_destinations=1
2026-09-06T14:56:43.903061Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="select_finalist"}: optimized physical exchange schedule phase=3 initial_horizon=15700 selected_horizon=15700 endpoint_lower_bound=8640 lower_bound_gap=7060 selected_kind="full-duplex" neighborhood_improvements=0
2026-09-06T14:56:44.104298Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="select_finalist"}: finished large physical exchange phase phase=3 tile=447 row_words=633 horizon=15700
2026-09-06T14:56:44.178698Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="select_finalist"}: scheduled operator-plan finalist finalist=3 mapped=false analytical_cycles=206964 analytical_exchange_cycles=87208 scheduled_exchange_cycles=54160 refined_cycles=173916
2026-09-06T14:56:44.359896Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="select_finalist"}: selected physically scheduled operator-plan finalist selected=3 mapped=false
2026-09-06T14:56:44.359931Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="select_finalist"}: package build phase finished phase="select_finalist" elapsed_ms=61432 success=true
2026-09-06T14:56:44.359947Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}: lowered graph for package construction logical_shards=26518 exchange_phases=4
2026-09-06T14:56:44.360584Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="compile_runtime"}: package build phase finished phase="compile_runtime" elapsed_ms=0 success=true
2026-09-06T14:56:44.361901Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="plan_kernels"}: package build phase finished phase="plan_kernels" elapsed_ms=1 success=true
2026-09-06T14:56:44.364195Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="compile_kernels"}: package build phase finished phase="compile_kernels" elapsed_ms=2 success=true
2026-09-06T14:56:44.364872Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="link_runtime"}: package build phase finished phase="link_runtime" elapsed_ms=0 success=true
2026-09-06T14:56:45.025982Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="size_tile_code"}: package build phase finished phase="size_tile_code" elapsed_ms=6 success=true
2026-09-06T14:56:45.026060Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}: allocated package support memory linked_end=318892 profile_bytes=100 exchange_table_bytes=3652 host_code_bytes=2272 generated_code_bytes=1408 code_address=321168 standard_ranges=[(409600, 524288)]
2026-09-06T14:56:45.158290Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="place_storage"}: package build phase finished phase="place_storage" elapsed_ms=132 success=true
2026-09-06T14:56:45.164862Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=0
2026-09-06T14:56:45.419851Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=1
2026-09-06T14:56:45.435362Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=1 transfers=32280 maximum_identical_destinations=1
2026-09-06T14:56:45.435388Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=1 initial_horizon=9600 selected_horizon=9600 endpoint_lower_bound=7776 lower_bound_gap=1824 selected_kind="reused" neighborhood_improvements=0
2026-09-06T14:56:45.463991Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=1 tile=705 row_words=140 horizon=9600
2026-09-06T14:56:46.175962Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=2
2026-09-06T14:56:46.197142Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=2 transfers=5814 maximum_identical_destinations=1
2026-09-06T14:56:46.197169Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=2 initial_horizon=22790 selected_horizon=22790 endpoint_lower_bound=17280 lower_bound_gap=5510 selected_kind="reused" neighborhood_improvements=0
2026-09-06T14:56:46.233996Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=2 tile=934 row_words=227 horizon=22790
2026-09-06T14:57:02.958093Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="lower_exchanges"}: reused exchange optimization after validating relocated rows phase=3
2026-09-06T14:57:03.078038Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="lower_exchanges"}: prepared large physical exchange phase phase=3 transfers=155880 maximum_identical_destinations=1
2026-09-06T14:57:03.078082Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="lower_exchanges"}: optimized physical exchange schedule phase=3 initial_horizon=15700 selected_horizon=15700 endpoint_lower_bound=8640 lower_bound_gap=7060 selected_kind="reused" neighborhood_improvements=0
2026-09-06T14:57:03.268388Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="lower_exchanges"}: finished large physical exchange phase phase=3 tile=447 row_words=633 horizon=15700
2026-09-06T14:57:03.323066Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="lower_exchanges"}: package build phase finished phase="lower_exchanges" elapsed_ms=18164 success=true
2026-09-06T14:57:04.832258Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=0
2026-09-06T14:57:05.089871Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=1
2026-09-06T14:57:05.105320Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=1 transfers=32280 maximum_identical_destinations=1
2026-09-06T14:57:05.105343Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=1 initial_horizon=9600 selected_horizon=9600 endpoint_lower_bound=7776 lower_bound_gap=1824 selected_kind="reused" neighborhood_improvements=0
2026-09-06T14:57:05.134148Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=1 tile=705 row_words=140 horizon=9600
2026-09-06T14:57:08.451809Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: compared ordinary and paired exchange schedules phase=2 candidates=4417 ordinary_horizon=28429 paired_horizon=21776 use_paired=true
2026-09-06T14:57:08.525638Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=2 transfers=5814 maximum_identical_destinations=1
2026-09-06T14:57:08.525672Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=2 initial_horizon=21776 selected_horizon=21776 endpoint_lower_bound=17280 lower_bound_gap=4496 selected_kind="full-duplex" neighborhood_improvements=0
2026-09-06T14:57:08.566345Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=2 tile=878 row_words=233 horizon=21776
2026-09-06T14:57:22.823322Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: reused exchange optimization after validating relocated rows phase=3
2026-09-06T14:57:22.870289Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: prepared large physical exchange phase phase=3 transfers=155880 maximum_identical_destinations=1
2026-09-06T14:57:22.870307Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: optimized physical exchange schedule phase=3 initial_horizon=15700 selected_horizon=15700 endpoint_lower_bound=8640 lower_bound_gap=7060 selected_kind="reused" neighborhood_improvements=0
2026-09-06T14:57:22.980009Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: finished large physical exchange phase phase=3 tile=447 row_words=633 horizon=15700
2026-09-06T14:57:23.018728Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: evaluated exchange placement finalist offset=28672 baseline_score=127530434560 score=100812718080 baseline_cycles=51760 candidate_cycles=50746 row_bytes=3652 row_capacity=16320 accepted=true
2026-09-06T14:57:23.032103Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="optimize_exchange_placement"}: package build phase finished phase="optimize_exchange_placement" elapsed_ms=19708 success=true
2026-09-06T14:57:23.035186Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}: costed final placed program final_cycles=172902 final_exchange=53146
2026-09-06T14:57:23.231458Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="prepare_tile_code"}: package build phase finished phase="prepare_tile_code" elapsed_ms=6 success=true
2026-09-06T14:57:23.239472Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="emit_tile_code"}: package build phase finished phase="emit_tile_code" elapsed_ms=7 success=true
2026-09-06T14:57:23.310644Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="build_tile_images"}: package build phase finished phase="build_tile_images" elapsed_ms=67 success=true
2026-09-06T14:57:23.355405Z  INFO writing application package tiles=1472
2026-09-06T14:57:23.380059Z  INFO application package written
exchangeSchedule=artifacts/layout-sweep/reuse-selected-schedule/exchange.json tiles=1472 phases=4 transfers=194710