2026-09-06T11:38:34.555050Z  INFO applied GEMM plan constraint source_operation=0 matching_plans=1 constraint=GemmPlanConstraint { source_operation: 0, orientation: Swapped, row_partitions: 23, column_partitions: 16, inner_partitions: 4, result_row_partitions: 4, result_column_partitions: 1, output_column_block: 48, weight_memory_class: Ipu21Interleaved, reduction_staging: Complete, local_weight_staging: Direct }
2026-09-06T11:38:34.912753Z  INFO applied GEMM plan constraint source_operation=2 matching_plans=1 constraint=GemmPlanConstraint { source_operation: 2, orientation: Normal, row_partitions: 4, column_partitions: 24, inner_partitions: 15, result_row_partitions: 15, result_column_partitions: 1, output_column_block: 48, weight_memory_class: Ipu21Interleaved, reduction_staging: Complete, local_weight_staging: Direct }
2026-09-06T11:38:35.176115Z  INFO retained operator-plan finalist finalist=0 values=7 operations=4 estimated_cycles=525268 estimated_exchange_cycles=124280 exchange_row_bytes=27308 peak_standard_bytes=247980 peak_interleaved_bytes=88064 peak_total_bytes=280236 maximum_standard_allocation_bytes=114688 active_tile_counts={1440, 1472} padding_group_counts={} conversion_sources=[Some(OperationId(2))]
2026-09-06T11:38:35.185682Z  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=918 success=true
2026-09-06T11:38:40.621344Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="select_finalist"}: selected analytical operator plan estimated_cycles=9587647 estimated_exchange_cycles=8531016
2026-09-06T11:38:40.652813Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="select_finalist"}: eliminated finite GEMM padding clears using load-time SRAM initialization removed=0
2026-09-06T11:38:40.654733Z  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=5468 success=true
2026-09-06T11:38:40.654749Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}: lowered graph for package construction logical_shards=29312 exchange_phases=5
2026-09-06T11:38:40.654933Z  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
2026-09-06T11:38:40.655740Z  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=0 success=true
2026-09-06T11:38:40.655884Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="compile_kernels"}: compiling kernel source=/srv/home/gc-sdk/ipu-stack/crates/ipu-tests/../../device/gemm_f16_amp.S name="gemm_f16_interleaved_k288_c32_r186_r188" target=ipu21
2026-09-06T11:38:40.708338Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="compile_kernels"}: kernel artifact created object=/srv/home/.cache/ipu-stack/kernels/35b67f5d5cbcd79695d42b190892aba99cf9e56ca0ab2eed163f9a05417f397e/kernel.o metadata=/srv/home/.cache/ipu-stack/kernels/35b67f5d5cbcd79695d42b190892aba99cf9e56ca0ab2eed163f9a05417f397e/kernel.json
2026-09-06T11:38:40.708800Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="compile_kernels"}: compiling kernel source=/srv/home/gc-sdk/ipu-stack/crates/ipu-tests/../../device/gemm_f16_amp.S name="gemm_f16_interleaved_k288_c48_r186_r188" target=ipu21
2026-09-06T11:38:40.761299Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="compile_kernels"}: kernel artifact created object=/srv/home/.cache/ipu-stack/kernels/b6092d82f31ca7c5062382e3bc054a0e9eb02a281f62a9a9ea1b69709a057ba6/kernel.o metadata=/srv/home/.cache/ipu-stack/kernels/b6092d82f31ca7c5062382e3bc054a0e9eb02a281f62a9a9ea1b69709a057ba6/kernel.json
2026-09-06T11:38:40.761823Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="compile_kernels"}: compiling kernel source=/srv/home/gc-sdk/ipu-stack/crates/ipu-tests/../../device/rearrange_amp_left_f16.S name="rearrange_amp_left_f16_o0_r181_p182_c272_p288" target=ipu21
2026-09-06T11:38:40.805110Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="compile_kernels"}: kernel artifact created object=/srv/home/.cache/ipu-stack/kernels/081d0fa99ae32646fbaa374f784cbc73dc6dc6575d2525b7f07a9917d0f57434/kernel.o metadata=/srv/home/.cache/ipu-stack/kernels/081d0fa99ae32646fbaa374f784cbc73dc6dc6575d2525b7f07a9917d0f57434/kernel.json
2026-09-06T11:38:40.805428Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="compile_kernels"}: compiling kernel source=/srv/home/gc-sdk/ipu-stack/crates/ipu-tests/../../device/rearrange_amp_left_f16.S name="rearrange_amp_left_f16_o0_r181_p182_c288_p288" target=ipu21
2026-09-06T11:38:40.847282Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="compile_kernels"}: kernel artifact created object=/srv/home/.cache/ipu-stack/kernels/e700d7b386a09b5c8a05f44ba7a4a87ff2950ff5650fc637e7cfe19c8227ba5f/kernel.o metadata=/srv/home/.cache/ipu-stack/kernels/e700d7b386a09b5c8a05f44ba7a4a87ff2950ff5650fc637e7cfe19c8227ba5f/kernel.json
2026-09-06T11:38:40.847575Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="compile_kernels"}: compiling kernel source=/srv/home/gc-sdk/ipu-stack/crates/ipu-tests/../../device/rearrange_amp_left_f16.S name="rearrange_amp_left_f16_o0_r182_p182_c272_p288" target=ipu21
2026-09-06T11:38:40.896588Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="compile_kernels"}: kernel artifact created object=/srv/home/.cache/ipu-stack/kernels/611c3249cd8a95465cb8f25a28adfbc27eacddab138ccfc4a27827689a14cdad/kernel.o metadata=/srv/home/.cache/ipu-stack/kernels/611c3249cd8a95465cb8f25a28adfbc27eacddab138ccfc4a27827689a14cdad/kernel.json
2026-09-06T11:38:40.896878Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="compile_kernels"}: compiling kernel source=/srv/home/gc-sdk/ipu-stack/crates/ipu-tests/../../device/rearrange_amp_left_f16.S name="rearrange_amp_left_f16_o0_r182_p182_c288_p288" target=ipu21
2026-09-06T11:38:40.943570Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="compile_kernels"}: kernel artifact created object=/srv/home/.cache/ipu-stack/kernels/ab4e2c1ed98cc4710e644dc025e24626238e488c8a14a5a11ee72a014594edae/kernel.o metadata=/srv/home/.cache/ipu-stack/kernels/ab4e2c1ed98cc4710e644dc025e24626238e488c8a14a5a11ee72a014594edae/kernel.json
2026-09-06T11:38:40.943747Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="compile_kernels"}: compiling kernel source=/srv/home/gc-sdk/ipu-stack/crates/ipu-tests/../../device/rearrange_amp_left_f16.S name="rearrange_amp_left_f16_o0_r184_p184_c272_p288" target=ipu21
2026-09-06T11:38:40.988994Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="compile_kernels"}: kernel artifact created object=/srv/home/.cache/ipu-stack/kernels/0093674a717514fd7f1cc0282ba1f8cfc49a54961915c0a0a9245128dcb17e57/kernel.o metadata=/srv/home/.cache/ipu-stack/kernels/0093674a717514fd7f1cc0282ba1f8cfc49a54961915c0a0a9245128dcb17e57/kernel.json
2026-09-06T11:38:40.989454Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="compile_kernels"}: compiling kernel source=/srv/home/gc-sdk/ipu-stack/crates/ipu-tests/../../device/rearrange_amp_left_f16.S name="rearrange_amp_left_f16_o0_r184_p184_c288_p288" target=ipu21
2026-09-06T11:38:41.031716Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="compile_kernels"}: kernel artifact created object=/srv/home/.cache/ipu-stack/kernels/2d9aa8db162bb7da4f428229af07418e0d2b87f5c4e1b904aa845b1354023189/kernel.o metadata=/srv/home/.cache/ipu-stack/kernels/2d9aa8db162bb7da4f428229af07418e0d2b87f5c4e1b904aa845b1354023189/kernel.json
2026-09-06T11:38:41.032277Z  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=376 success=true
2026-09-06T11:38:41.036235Z  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
2026-09-06T11:38:41.172438Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="plan_exchange_storage"}: package build phase finished phase="plan_exchange_storage" elapsed_ms=136 success=true
2026-09-06T11:38:41.589591Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="lower_exchanges_provisional"}: prepared large physical exchange phase phase=1 transfers=16744 maximum_identical_destinations=1
2026-09-06T11:38:41.589624Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="lower_exchanges_provisional"}: optimized physical exchange schedule phase=1 initial_horizon=4821 selected_horizon=4821 endpoint_lower_bound=4320 lower_bound_gap=501 selected_kind="full-duplex" neighborhood_improvements=0
2026-09-06T11:38:41.603791Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="lower_exchanges_provisional"}: finished large physical exchange phase phase=1 tile=883 row_words=96 horizon=4821
2026-09-06T11:38:41.609139Z ERROR failed to prepare logical exchange transfer phase=2 transfer=0 provenance=WorkProvenance { operation: Some(OperationId(2)), value: Some(MidValueId(5)), reason: LayoutRearrangement } source=ShardView { shard: BlockValueId(4776), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] } destinations=[ShardView { shard: BlockValueId(21897), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(21898), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(21899), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(21900), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(21901), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(21902), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(21903), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(21904), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(21905), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(21906), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(21907), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(21908), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(21909), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(21910), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(21911), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(21912), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(21913), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(21914), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(21915), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(21916), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(21917), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(21918), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(21919), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 0, logical_end: 48, physical_end: 48 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }] error=UnalignedPayload
2026-09-06T11:38:41.609270Z ERROR failed to prepare logical exchange transfer phase=2 transfer=17 provenance=WorkProvenance { operation: Some(OperationId(2)), value: Some(MidValueId(5)), reason: LayoutRearrangement } source=ShardView { shard: BlockValueId(4790), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] } destinations=[ShardView { shard: BlockValueId(22976), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22977), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22978), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22979), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22980), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22981), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22982), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22983), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22984), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22985), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22986), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22987), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22988), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22989), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22990), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22991), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22992), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22993), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22994), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22995), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22996), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22997), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22998), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22999), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 672, logical_end: 704, physical_end: 704 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }] error=UnalignedPayload
2026-09-06T11:38:41.609487Z ERROR failed to prepare logical exchange transfer phase=2 transfer=14 provenance=WorkProvenance { operation: Some(OperationId(2)), value: Some(MidValueId(5)), reason: LayoutRearrangement } source=ShardView { shard: BlockValueId(4787), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] } destinations=[ShardView { shard: BlockValueId(22976), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22977), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22978), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22979), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22980), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22981), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22982), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22983), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22984), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22985), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22986), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22987), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22988), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22989), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22990), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22991), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22992), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22993), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22994), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22995), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22996), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22997), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22998), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }, ShardView { shard: BlockValueId(22999), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 548, logical_end: 576, physical_end: 576 }, ShardExtent { axis: 2, start: 0, logical_end: 48, physical_end: 48 }] }] error=UnalignedPayload
2026-09-06T11:38:41.609538Z ERROR failed to prepare logical exchange transfer phase=2 transfer=29 provenance=WorkProvenance { operation: Some(OperationId(2)), value: Some(MidValueId(5)), reason: LayoutRearrangement } source=ShardView { shard: BlockValueId(4800), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] } destinations=[ShardView { shard: BlockValueId(22616), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22617), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22618), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22619), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22620), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22621), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22622), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22623), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22624), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22625), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22626), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22627), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22628), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22629), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22630), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22631), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22632), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22633), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22634), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22635), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22636), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22637), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22638), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }, ShardView { shard: BlockValueId(22639), extents: [ShardExtent { axis: 0, start: 0, logical_end: 1, physical_end: 1 }, ShardExtent { axis: 1, start: 384, logical_end: 432, physical_end: 432 }, ShardExtent { axis: 2, start: 48, logical_end: 96, physical_end: 96 }] }] error=UnalignedPayload
2026-09-06T11:38:41.611803Z  INFO ipu_codegen.package.build{tile_count=1472 operations=3}:ipu_codegen.package.phase{phase="lower_exchanges_provisional"}: package build phase finished phase="lower_exchanges_provisional" elapsed_ms=439 success=false
Error: exchange lowering failed: exchange payload is not a nonempty whole number of words

Caused by:
    exchange payload is not a nonempty whole number of words