2026-09-06T15:12:24.576397Z  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))]
2026-09-06T15:12:24.580050Z  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))]
2026-09-06T15:12:24.583821Z  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))]
2026-09-06T15:12:24.587359Z  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))]
2026-09-06T15:12:25.058434Z  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=13547 success=true
2026-09-06T15:12:27.407235Z  INFO eliminated finite GEMM padding clears using load-time SRAM initialization removed=24
2026-09-06T15:12:27.431649Z  INFO eliminated finite GEMM padding clears using load-time SRAM initialization removed=24
2026-09-06T15:12:27.628892Z  INFO eliminated finite GEMM padding clears using load-time SRAM initialization removed=36
2026-09-06T15:12:27.757921Z  INFO eliminated finite GEMM padding clears using load-time SRAM initialization removed=36
2026-09-06T15:12:32.924323Z  INFO screened tile mappings by exchange resource load candidates=52 baseline_cycles=37152 candidate_cycles=37152 baseline_pressure=32228 candidate_pressure=32228
2026-09-06T15:12:33.033456Z  INFO modelled expanded operator plan finalist=3 modelled_cycles=159308 estimated_cycles=206964 estimated_exchange_cycles=87208
2026-09-06T15:12:33.527746Z  INFO screened tile mappings by exchange resource load candidates=74 baseline_cycles=41920 candidate_cycles=41920 baseline_pressure=29556 candidate_pressure=29556
2026-09-06T15:12:33.624425Z  INFO modelled expanded operator plan finalist=2 modelled_cycles=168008 estimated_cycles=205680 estimated_exchange_cycles=81992
2026-09-06T15:12:34.246274Z  INFO screened tile mappings by exchange resource load candidates=75 baseline_cycles=37600 candidate_cycles=37600 baseline_pressure=33584 candidate_pressure=33584
2026-09-06T15:12:34.340492Z  INFO modelled expanded operator plan finalist=1 modelled_cycles=163500 estimated_cycles=193588 estimated_exchange_cycles=70088
2026-09-06T15:12:34.751954Z  INFO screened tile mappings by exchange resource load candidates=97 baseline_cycles=40160 candidate_cycles=40160 baseline_pressure=30824 candidate_pressure=30824
2026-09-06T15:12:34.833005Z  INFO modelled expanded operator plan finalist=0 modelled_cycles=169992 estimated_cycles=192304 estimated_exchange_cycles=64872
2026-09-06T15:12:35.847565Z  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
2026-09-06T15:12:35.847613Z  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
2026-09-06T15:12:35.866820Z  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
2026-09-06T15:12:40.748756Z  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
2026-09-06T15:12:40.839120Z  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
2026-09-06T15:12:40.839176Z  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
2026-09-06T15:12:40.881004Z  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
2026-09-06T15:13:24.001613Z  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
2026-09-06T15:13:24.001683Z  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
2026-09-06T15:13:24.211011Z  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
2026-09-06T15:13:24.300145Z  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
2026-09-06T15:13:24.456425Z  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
2026-09-06T15:13:24.456453Z  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=59397 success=true
2026-09-06T15:13:24.456467Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}: lowered graph for package construction logical_shards=26518 exchange_phases=4
2026-09-06T15:13:24.458446Z  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=1 success=true
2026-09-06T15:13:24.459740Z  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
2026-09-06T15:13:24.460616Z  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=0 success=true
2026-09-06T15:13:24.461262Z  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
2026-09-06T15:13:25.144468Z  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
2026-09-06T15:13:25.144539Z  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)]
2026-09-06T15:13:25.262274Z  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=117 success=true
2026-09-06T15:13:25.268725Z  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
2026-09-06T15:13:25.487546Z  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
2026-09-06T15:13:25.517053Z  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
2026-09-06T15:13:25.517086Z  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
2026-09-06T15:13:25.535671Z  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
2026-09-06T15:13:26.035769Z  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
2026-09-06T15:13:26.050181Z  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
2026-09-06T15:13:26.050233Z  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
2026-09-06T15:13:26.074170Z  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
2026-09-06T15:13:41.677121Z  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
2026-09-06T15:13:41.773454Z  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
2026-09-06T15:13:41.773491Z  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
2026-09-06T15:13:41.963543Z  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
2026-09-06T15:13:42.018765Z  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=16756 success=true
2026-09-06T15:13:43.495718Z  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
2026-09-06T15:13:43.754500Z  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
2026-09-06T15:13:43.770485Z  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
2026-09-06T15:13:43.770513Z  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
2026-09-06T15:13:43.799296Z  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
2026-09-06T15:13:47.220679Z  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
2026-09-06T15:13:47.293069Z  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
2026-09-06T15:13:47.293102Z  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
2026-09-06T15:13:47.332883Z  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
2026-09-06T15:14:03.522806Z  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
2026-09-06T15:14:03.621187Z  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
2026-09-06T15:14:03.621262Z  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
2026-09-06T15:14:03.822831Z  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
2026-09-06T15:14:03.897221Z  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
2026-09-06T15:14:03.922076Z  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=21903 success=true
2026-09-06T15:14:03.927344Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}: costed final placed program final_cycles=172902 final_exchange=53146
2026-09-06T15:14:04.274913Z  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=10 success=true
2026-09-06T15:14:04.289383Z  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=14 success=true
2026-09-06T15:14:04.409151Z  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=113 success=true
2026-09-06T15:14:04.492631Z  INFO writing application package tiles=1472
2026-09-06T15:14:04.537110Z  INFO application package written
exchangeSchedule=artifacts/layout-sweep/package-candidate-boundaries/exchange.json tiles=1472 phases=4 transfers=194710