2026-09-22T07:37:12.787491Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:compile_runtime: close time.busy=322µs time.idle=2.27µs
2026-09-22T07:37:14.051320Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:construct_mid: close time.busy=1.26s time.idle=4.21µs
2026-09-22T07:37:14.053324Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:group_exchanges: close time.busy=7.91µs time.idle=2.39µs
2026-09-22T07:37:14.053372Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:merge_copies: close time.busy=24.4µs time.idle=513ns
2026-09-22T07:37:14.053548Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:eliminate: close time.busy=167µs time.idle=499ns
2026-09-22T07:37:14.067195Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:place_provisional_storage: close time.busy=13.6ms time.idle=3.40µs
2026-09-22T07:37:14.085090Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:schedule_provisional_exchanges: compared ordinary and paired exchange schedules phase=0 candidates=128 ordinary_horizon=1204 paired_horizon=1716 use_paired=false
2026-09-22T07:37:14.085891Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:schedule_provisional_exchanges: close time.busy=18.6ms time.idle=5.43µs
2026-09-22T07:37:14.087643Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:plan_kernels: close time.busy=1.67ms time.idle=3.18µs
2026-09-22T07:37:14.089361Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:compile_kernels: close time.busy=1.69ms time.idle=2.05µs
2026-09-22T07:37:14.089631Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:link_runtime: close time.busy=229µs time.idle=1.57µs
2026-09-22T07:37:14.090945Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}: exchange table and repeat patch storage exchange_table_bytes=208 maximum_uncompressed_repeat_patch_bytes=0 maximum_elided_arithmetic_patch_bytes=0
2026-09-22T07:37:14.097042Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:size_tile_code: close time.busy=3.39ms time.idle=4.63µs
2026-09-22T07:37:14.097085Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}: placing generated tile programs linked_end=316936 host_code_base=376832 host_code_bytes=248 generated_code_bytes=328 exchange_table_bytes=208 executable_ranges=[(377144, 524288)]
2026-09-22T07:37:14.097101Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}: allocated package support memory linked_end=316936 profile_bytes=0 exchange_table_bytes=208 host_code_bytes=248 host_data_bytes=168 generated_code_bytes=328 code_address=377144 available_ranges=[(327680, 360448), (362376, 376832), (409600, 949168)]
2026-09-22T07:37:14.100292Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:place_storage: close time.busy=2.13ms time.idle=2.34µs
2026-09-22T07:37:14.103696Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:lower_exchanges: reused exchange optimization after validating relocated rows phase=1
2026-09-22T07:37:14.104103Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:lower_exchanges: reused exchange optimization after validating relocated rows phase=0
2026-09-22T07:37:14.104548Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:lower_exchanges: close time.busy=4.23ms time.idle=2.01µs
2026-09-22T07:37:14.104609Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}: costed final placed program final_cycles=7565 final_exchange=3693
2026-09-22T07:37:14.109016Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:prepare_tile_code: close time.busy=2.37ms time.idle=2.16µs
2026-09-22T07:37:14.110911Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:emit_tile_code: close time.busy=1.88ms time.idle=1.11µs
2026-09-22T07:37:14.191788Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:build_tile_images: close time.busy=80.3ms time.idle=1.41µs
2026-09-22T07:37:14.193816Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}: close time.busy=1.41s time.idle=4.44µs
2026-09-22T07:37:14.194380Z  INFO writing application package tiles=1472
2026-09-22T07:37:14.199843Z  INFO application package written
2026-09-22T07:37:14.200328Z  INFO reading application package
2026-09-22T07:37:14.208141Z  INFO application package read tiles=1472 compiler=0.1.0
2026-09-22T07:37:14.208509Z  INFO waiting for hardware ownership path=/tmp/ipu-stack-device.lock
2026-09-22T07:37:14.208520Z  INFO acquired hardware ownership path=/tmp/ipu-stack-device.lock
2026-09-22T07:37:14.208526Z  INFO opening IPU device path="/dev/ipu0"
2026-09-22T07:37:14.208571Z  INFO IPU device attached path=/dev/ipu0
2026-09-22T07:37:14.208574Z  INFO initializing IPU device
2026-09-22T07:37:14.216434Z  INFO IPU device initialized
2026-09-22T07:37:14.216439Z  INFO replaying device configuration register_writes=2003
2026-09-22T07:37:14.219984Z  INFO loading application tile_count=1472 final_mark=23
2026-09-22T07:37:14.402777Z  INFO application loaded and initial synchronization completed tile_count=1472
2026-09-22T07:37:14.406918Z  INFO prepared reference inputs elapsed_ms=2
2026-09-22T07:37:14.407501Z  INFO configured host reference BLAS threads=4
referencePrecision=device
2026-09-22T07:37:14.408150Z  INFO evaluated host reference elapsed_ms=1
2026-09-22T07:37:14.408263Z  INFO starting host exchange session startup_mark=23
2026-09-22T07:37:14.408268Z  INFO attaching host exchange pages pages=2
2026-09-22T07:37:14.408975Z  INFO host exchange session started
2026-09-22T07:37:14.408979Z  INFO invoking host exchange call call="initialize" command=0 phases=4
2026-09-22T07:37:14.409462Z  INFO invoking host exchange call call="run" command=0 phases=3
Error: numerical comparison failed for 13/4096 logical shard values (maximum absolute error 0.00269413): [(842, 0.03060913, 0.032226563, 0.0016174316), (846, -0.0039978027, -0.005428314, 0.0014305115), (869, 0.027954102, 0.029541016, 0.0015869141), (870, -0.049468994, -0.047027588, 0.0024414063), (883, -0.02368164, -0.025680542, 0.0019989014), (888, -0.034057617, -0.03186035, 0.0021972656), (1817, 0.004753113, 0.006134033, 0.0013809204), (2315, 0.02645874, 0.02407837, 0.002380371), (2319, 0.0026664734, 0.0015592575, 0.0011072159), (2344, -0.006832123, -0.0044517517, 0.002380371), (2347, 0.016433716, 0.015014648, 0.0014190674), (2348, 0.020141602, 0.018325806, 0.0018157959), (2367, 6.389618e-5, 0.0027580261, 0.00269413)]