2026-09-22T07:34:10.195572Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:compile_runtime: close time.busy=297µs time.idle=7.18µs
2026-09-22T07:34:12.073063Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:construct_mid: close time.busy=1.88s time.idle=4.39µs
2026-09-22T07:34:12.074956Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:group_exchanges: close time.busy=7.30µs time.idle=2.12µs
2026-09-22T07:34:12.075005Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:merge_copies: close time.busy=24.8µs time.idle=702ns
2026-09-22T07:34:12.075184Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:eliminate: close time.busy=169µs time.idle=625ns
2026-09-22T07:34:12.089617Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:place_provisional_storage: close time.busy=14.4ms time.idle=3.12µs
2026-09-22T07:34:12.101762Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:schedule_provisional_exchanges: compared ordinary and paired exchange schedules phase=0 candidates=4 ordinary_horizon=1176 paired_horizon=947 use_paired=true
2026-09-22T07:34:12.102462Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:schedule_provisional_exchanges: compared ordinary and paired exchange schedules phase=1 candidates=4 ordinary_horizon=1176 paired_horizon=885 use_paired=true
2026-09-22T07:34:12.103244Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:schedule_provisional_exchanges: close time.busy=13.6ms time.idle=4.87µs
2026-09-22T07:34:12.105085Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:plan_kernels: close time.busy=1.78ms time.idle=3.02µs
2026-09-22T07:34:12.107119Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:compile_kernels: close time.busy=2.00ms time.idle=1.48µs
2026-09-22T07:34:12.107238Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:link_runtime: close time.busy=98.1µs time.idle=712ns
2026-09-22T07:34:12.107903Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}: exchange table and repeat patch storage exchange_table_bytes=276 maximum_uncompressed_repeat_patch_bytes=0 maximum_elided_arithmetic_patch_bytes=0
2026-09-22T07:34:12.114235Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:size_tile_code: close time.busy=4.69ms time.idle=3.09µs
2026-09-22T07:34:12.114272Z  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=276 executable_ranges=[(377144, 524288)]
2026-09-22T07:34:12.114287Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}: allocated package support memory linked_end=316936 profile_bytes=0 exchange_table_bytes=276 host_code_bytes=248 host_data_bytes=168 generated_code_bytes=328 code_address=377144 available_ranges=[(327680, 360448), (362376, 376832), (409600, 949168)]
2026-09-22T07:34:12.120795Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:place_storage: close time.busy=5.45ms time.idle=4.16µs
2026-09-22T07:34:12.127218Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:lower_exchanges: reused exchange optimization after validating relocated rows phase=1
2026-09-22T07:34:12.130816Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:lower_exchanges: reused exchange optimization after validating relocated rows phase=0
2026-09-22T07:34:12.131319Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:lower_exchanges: close time.busy=10.5ms time.idle=3.54µs
2026-09-22T07:34:12.131410Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}: costed final placed program final_cycles=6904 final_exchange=3032
2026-09-22T07:34:12.136332Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:prepare_tile_code: close time.busy=2.84ms time.idle=4.92µs
2026-09-22T07:34:12.138269Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:emit_tile_code: close time.busy=1.89ms time.idle=1.76µs
2026-09-22T07:34:12.221707Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}:build_tile_images: close time.busy=82.9ms time.idle=1.77µs
2026-09-22T07:34:12.223967Z  INFO ipu_codegen.package.build{tile_count=64 operations=4}: close time.busy=2.03s time.idle=3.72µs
2026-09-22T07:34:12.224725Z  INFO writing application package tiles=1472
2026-09-22T07:34:12.233830Z  INFO application package written
2026-09-22T07:34:12.234658Z  INFO reading application package
2026-09-22T07:34:12.249384Z  INFO application package read tiles=1472 compiler=0.1.0
2026-09-22T07:34:12.249896Z  INFO waiting for hardware ownership path=/tmp/ipu-stack-device.lock
2026-09-22T07:34:12.249905Z  INFO acquired hardware ownership path=/tmp/ipu-stack-device.lock
2026-09-22T07:34:12.249911Z  INFO opening IPU device path="/dev/ipu0"
2026-09-22T07:34:12.249947Z  INFO IPU device attached path=/dev/ipu0
2026-09-22T07:34:12.249950Z  INFO initializing IPU device
2026-09-22T07:34:12.257951Z  INFO IPU device initialized
2026-09-22T07:34:12.257957Z  INFO replaying device configuration register_writes=2003
2026-09-22T07:34:12.261945Z  INFO loading application tile_count=1472 final_mark=23
2026-09-22T07:34:12.468063Z  INFO application loaded and initial synchronization completed tile_count=1472
2026-09-22T07:34:12.474500Z  INFO prepared reference inputs elapsed_ms=2
2026-09-22T07:34:12.475065Z  INFO configured host reference BLAS threads=4
referencePrecision=device
2026-09-22T07:34:12.475718Z  INFO evaluated host reference elapsed_ms=1
2026-09-22T07:34:12.475828Z  INFO starting host exchange session startup_mark=23
2026-09-22T07:34:12.475834Z  INFO attaching host exchange pages pages=2
2026-09-22T07:34:12.476488Z  INFO host exchange session started
2026-09-22T07:34:12.476493Z  INFO invoking host exchange call call="initialize" command=0 phases=4
2026-09-22T07:34:12.476976Z  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), (2315, 0.02645874, 0.02407837, 0.002380371), (2319, 0.0026664734, 0.0015592575, 0.0011072159), (1817, 0.004753113, 0.006134033, 0.0013809204), (869, 0.027954102, 0.029541016, 0.0015869141), (870, -0.049468994, -0.047027588, 0.0024414063), (2344, -0.006832123, -0.0044517517, 0.002380371), (2347, 0.016433716, 0.015014648, 0.0014190674), (2348, 0.020141602, 0.018325806, 0.0018157959), (883, -0.02368164, -0.025680542, 0.0019989014), (888, -0.034057617, -0.03186035, 0.0021972656), (2367, 6.389618e-5, 0.0027580261, 0.00269413)]