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XPK Start: Fri Apr 24 18:10:16 UTC 2026
2026-04-24 18:10:20.524582: E external/local_xla/xla/stream_executor/cuda/cuda_fft.cc:467] Unable to register cuFFT factory: Attempting to register factory for plugin cuFFT when one has already been registered
WARNING: All log messages before absl::InitializeLog() is called are written to STDERR
E0000 00:00:1777054220.537474      10 cuda_dnn.cc:8579] Unable to register cuDNN factory: Attempting to register factory for plugin cuDNN when one has already been registered
E0000 00:00:1777054220.541132      10 cuda_blas.cc:1407] Unable to register cuBLAS factory: Attempting to register factory for plugin cuBLAS when one has already been registered
W0000 00:00:1777054220.552340      10 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once.
W0000 00:00:1777054220.552363      10 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once.
W0000 00:00:1777054220.552365      10 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once.
W0000 00:00:1777054220.552367      10 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once.
2026-04-24 18:10:39.742533: E external/local_xla/xla/stream_executor/cuda/cuda_platform.cc:51] failed call to cuInit: INTERNAL: CUDA error: Failed call to cuInit: UNKNOWN ERROR (303)
I0424 18:10:40.266349 135578360444736 max_utils.py:273] Attempting to initialize the jax distributed system...
INFO:2026-04-24 18:10:49,305:jax._src.distributed:140: Starting JAX distributed service on [::]:8482
I0424 18:10:49.305938 135578360444736 distributed.py:140] Starting JAX distributed service on [::]:8482
INFO:2026-04-24 18:10:49,308:jax._src.distributed:157: Connecting to JAX distributed service on mt-05-fp8-4t7vj-slice-job-0-0.mt-05-fp8-4t7vj:8482
I0424 18:10:49.308340 135578360444736 distributed.py:157] Connecting to JAX distributed service on mt-05-fp8-4t7vj-slice-job-0-0.mt-05-fp8-4t7vj:8482
I0424 18:10:50.674798 135578360444736 max_utils.py:284] Jax distributed system initialized!
I0424 18:10:57.476323 135578360444736 max_utils.py:800] System Information: Jax Version: 0.8.1
I0424 18:10:57.476428 135578360444736 max_utils.py:801] System Information: Jaxlib Version: 0.8.1
I0424 18:10:57.476470 135578360444736 max_utils.py:802] System Information: Jax Backend: PJRT C API
TFRT TPU v6 lite
Built on Nov 12 2025 14:16:36 (1762985796) cl/831091709
I0424 18:10:57.476506 135578360444736 train_utils.py:347] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0424 18:10:58.096117 135578360444736 maxtext_utils.py:1517] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0424 18:10:58.096412 135578360444736 checkpointing.py:677] Setting up checkpoint logger...
I0424 18:10:58.096466 135578360444736 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True
I0424 18:10:58.096510 135578360444736 pytree_checkpoint_handler.py:589] save_device_host_concurrent_bytes=None
I0424 18:10:58.096867 135578360444736 base_pytree_checkpoint_handler.py:415] Created BasePyTreeCheckpointHandler: use_ocdbt=True, use_zarr3=True, pytree_metadata_options=PyTreeMetadataOptions(support_rich_types=False), array_metadata_store=<orbax.checkpoint._src.metadata.array_metadata_store.Store object at 0x7b4e529a2ba0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0424 18:11:01.436241 135578360444736 checkpointing.py:265] Enabling policy for fixed interval checkpointing.
I0424 18:11:01.436581 135578360444736 checkpoint_manager.py:709] [process=5][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7b3b3e1ee0f0>}, handler_registry=None
I0424 18:11:01.436831 135578360444736 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7b3b3e1ee0f0>` for item "items" and save args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>` to `_handler_registry`.
I0424 18:11:01.436880 135578360444736 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7b3b3e61e870>` for item "metrics" and save args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>` to `_handler_registry`.
I0424 18:11:01.436917 135578360444736 composite_checkpoint_handler.py:505] Initialized registry DefaultCheckpointHandlerRegistry({('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeSaveArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7b3b3e1ee0f0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7b3b3e1ee0f0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7b3b3e61e870>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7b3b3e61e870>}).
I0424 18:11:01.437419 135578360444736 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.33
I0424 18:11:01.437497 135578360444736 async_checkpointer.py:177] [process=5][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7b3af7e3a840> timeout: 600 secs and primary_host=0 for async checkpoint writes
I0424 18:11:02.120265 135578360444736 checkpoint_manager.py:1818] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038/linen_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038_05_fp8/checkpoints
I0424 18:11:02.167412 135578360444736 checkpoint_manager.py:929] [process=5][thread=MainThread] CheckpointManager created,  primary_host=0, CheckpointManagerOptions=CheckpointManagerOptions(save_interval_steps=1, max_to_keep=None, keep_time_interval=None, keep_period=None, should_keep_fn=None, best_fn=None, best_mode='max', keep_checkpoints_without_metrics=True, step_prefix=None, step_format_fixed_length=None, step_name_format=None, create=True, cleanup_tmp_directories=False, save_on_steps=frozenset(), single_host_load_and_broadcast=False, todelete_subdir=None, todelete_full_path=None, enable_background_delete=False, read_only=False, enable_async_checkpointing=True, async_options=None, multiprocessing_options=MultiprocessingOptions(primary_host=0, active_processes=None, barrier_sync_key_prefix=None), should_save_fn=None, file_options=FileOptions(path_permission_mode=None), save_root_metadata=True, temporary_path_class=None, save_decision_policy=FixedIntervalPolicy(interval=10), preservation_policy=LatestN(n=None), prevent_write_metrics=False, enable_should_save_is_saving_in_progress_check=True, enable_per_process_directory_creation=False, lightweight_initialize=False), root_directory=gs://lance-maxtext/linen_ckpt_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038/linen_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038_05_fp8/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7b3b3ddbd190>
I0424 18:11:02.167562 135578360444736 checkpointing.py:301] Checkpoint manager created!
I0424 18:11:03.243595 135578360444736 nnx_wrappers.py:442] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0424 18:11:03.243712 135578360444736 nnx_wrappers.py:442] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0424 18:11:03.620271 135578360444736 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0424 18:11:03.620366 135578360444736 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0424 18:11:03.636239 135578360444736 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0424 18:11:03.636304 135578360444736 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0424 18:11:03.695729 135578360444736 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0424 18:11:03.695814 135578360444736 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0424 18:11:03.711661 135578360444736 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0424 18:11:03.711726 135578360444736 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0424 18:11:03.727421 135578360444736 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0424 18:11:03.727486 135578360444736 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0424 18:11:03.751460 135578360444736 attentions.py:1197] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0424 18:11:03.751530 135578360444736 attentions.py:1197] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0424 18:11:03.811409 135578360444736 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0424 18:11:03.811493 135578360444736 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0424 18:11:04.280350 135578360444736 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint
I0424 18:11:04.280466 135578360444736 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0424 18:11:06.315128 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/input_amax_history
    Shape:     float32[16,1024]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315256 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/input_scale
    Shape:     float32[16,1]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315309 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/kernel_amax_history
    Shape:     float32[16,1024]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315350 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/kernel_scale
    Shape:     float32[16,1]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315385 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/output_grad_amax_history
    Shape:     float32[16,1024]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315418 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/output_grad_scale
    Shape:     float32[16,1]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315451 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/input_amax_history
    Shape:     float32[16,1024]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315482 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/input_scale
    Shape:     float32[16,1]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315511 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/kernel_amax_history
    Shape:     float32[16,1024]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315541 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/kernel_scale
    Shape:     float32[16,1]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315569 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/output_grad_amax_history
    Shape:     float32[16,1024]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315599 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/output_grad_scale
    Shape:     float32[16,1]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315628 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/input_amax_history
    Shape:     float32[16,1024]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315671 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/input_scale
    Shape:     float32[16,1]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315705 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/kernel_amax_history
    Shape:     float32[16,1024]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315735 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/kernel_scale
    Shape:     float32[16,1]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315764 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/output_grad_amax_history
    Shape:     float32[16,1024]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315794 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/output_grad_scale
    Shape:     float32[16,1]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315823 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/input_amax_history
    Shape:     float32[16,1024]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315850 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/input_scale
    Shape:     float32[16,1]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315877 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/kernel_amax_history
    Shape:     float32[16,1024]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315904 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/kernel_scale
    Shape:     float32[16,1]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315931 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/output_grad_amax_history
    Shape:     float32[16,1024]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315958 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/output_grad_scale
    Shape:     float32[16,1]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.315986 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/input_amax_history
    Shape:     float32[16,1024]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.316013 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/input_scale
    Shape:     float32[16,1]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.316040 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/kernel_amax_history
    Shape:     float32[16,1024]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.316066 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/kernel_scale
    Shape:     float32[16,1]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.316092 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/output_grad_amax_history
    Shape:     float32[16,1024]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.316119 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/output_grad_scale
    Shape:     float32[16,1]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.316146 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/input_amax_history
    Shape:     float32[16,1024]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.316172 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/input_scale
    Shape:     float32[16,1]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.316199 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/kernel_amax_history
    Shape:     float32[16,1024]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.316225 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/kernel_scale
    Shape:     float32[16,1]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.316250 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/output_grad_amax_history
    Shape:     float32[16,1024]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.316277 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/output_grad_scale
    Shape:     float32[16,1]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.316309 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/input_amax_history
    Shape:     float32[16,1024]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.316346 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/input_scale
    Shape:     float32[16,1]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.316398 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/kernel_amax_history
    Shape:     float32[16,1024]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.316435 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/kernel_scale
    Shape:     float32[16,1]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.316464 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/output_grad_amax_history
    Shape:     float32[16,1024]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.316491 135578360444736 maxtext_utils.py:1620]  params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/output_grad_scale
    Shape:     float32[16,1]
    Logical:   PartitionSpec()
    Physical:  ()
I0424 18:11:06.316543 135578360444736 maxtext_utils.py:1620]  params/params/decoder/decoder_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0424 18:11:06.316597 135578360444736 maxtext_utils.py:1620]  params/params/decoder/layers/mlp/wi_0/kernel
    Shape:     float32[2048,16,7168]
    Logical:   PartitionSpec('embed', 'layers', 'mlp')
    Physical:  ('fsdp', None, None)
I0424 18:11:06.316635 135578360444736 maxtext_utils.py:1620]  params/params/decoder/layers/mlp/wi_1/kernel
    Shape:     float32[2048,16,7168]
    Logical:   PartitionSpec('embed', 'layers', 'mlp')
    Physical:  ('fsdp', None, None)
I0424 18:11:06.316714 135578360444736 maxtext_utils.py:1620]  params/params/decoder/layers/mlp/wo/kernel
    Shape:     float32[7168,16,2048]
    Logical:   PartitionSpec('mlp', 'layers', 'embed')
    Physical:  (None, None, 'fsdp')
I0424 18:11:06.316765 135578360444736 maxtext_utils.py:1620]  params/params/decoder/layers/post_self_attention_layer_norm/scale
    Shape:     float32[2048,16]
    Logical:   PartitionSpec('norm', 'layers')
    Physical:  (None, None)
I0424 18:11:06.316802 135578360444736 maxtext_utils.py:1620]  params/params/decoder/layers/pre_self_attention_layer_norm/scale
    Shape:     float32[2048,16]
    Logical:   PartitionSpec('norm', 'layers')
    Physical:  (None, None)
I0424 18:11:06.316849 135578360444736 maxtext_utils.py:1620]  params/params/decoder/layers/self_attention/key/kernel
    Shape:     float32[2048,16,16,128]
    Logical:   PartitionSpec('embed', 'layers', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None, None)
I0424 18:11:06.316896 135578360444736 maxtext_utils.py:1620]  params/params/decoder/layers/self_attention/out/kernel
    Shape:     float32[16,16,128,2048]
    Logical:   PartitionSpec('heads', 'layers', 'kv', 'embed')
    Physical:  (None, None, None, 'fsdp')
I0424 18:11:06.316931 135578360444736 maxtext_utils.py:1620]  params/params/decoder/layers/self_attention/query/kernel
    Shape:     float32[2048,16,16,128]
    Logical:   PartitionSpec('embed', 'layers', 'q_heads', 'kv')
    Physical:  ('fsdp', None, None, None)
I0424 18:11:06.316963 135578360444736 maxtext_utils.py:1620]  params/params/decoder/layers/self_attention/value/kernel
    Shape:     float32[2048,16,16,128]
    Logical:   PartitionSpec('embed', 'layers', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None, None)
I0424 18:11:06.317008 135578360444736 maxtext_utils.py:1620]  params/params/decoder/logits_dense/kernel
    Shape:     float32[2048,32000]
    Logical:   PartitionSpec('embed', 'vocab')
    Physical:  ('fsdp', None)
I0424 18:11:06.317056 135578360444736 maxtext_utils.py:1620]  params/params/token_embedder/embedding
    Shape:     float32[32000,2048]
    Logical:   PartitionSpec('vocab', 'embed')

    Physical:  (None, 'fsdp')
I0424 18:11:08.106081 135578360444736 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0424 18:11:08.106175 135578360444736 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0424 18:11:08.121193 135578360444736 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0424 18:11:08.121253 135578360444736 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0424 18:11:21.598296 135578360444736 max_utils.py:791] Total memory size: 1.5 GB, Output size: 0.4 GB, Temp size: 1.1 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB.
I0424 18:11:21.599372 135578360444736 metric_logger.py:289] number parameters: 1.105 billion
I0424 18:11:36.329792 135578360444736 checkpointing.py:772] Waiting for step 0 to finish before checkpoint...
I0424 18:11:36.496268 135578360444736 checkpointing.py:776] Waited 0.1664583683013916 seconds for step 0 to finish before starting checkpointing.
I0424 18:11:36.499002 135578360444736 checkpoint_manager.py:2013] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0424 18:11:36.500923 135578360444736 checkpoint_manager.py:1518] [process=5] Saving checkpoint at step 0
I0424 18:11:36.503743 135578360444736 async_checkpointer.py:452] [process=5] Started async saving checkpoint to gs://lance-maxtext/linen_ckpt_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038/linen_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038_05_fp8/checkpoints/0.
I0424 18:11:37.477772 135578360444736 signaling_client.py:364] Using JaxDistributedSignalingClient
I0424 18:11:37.478917 135578360444736 jax_array_handlers.py:358] Scheduling D2H of 81 prioritized jax.Array.
I0424 18:11:37.478978 135578360444736 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False
I0424 18:11:37.842842 135578360444736 base_pytree_checkpoint_handler.py:153] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.365209s
I0424 18:11:37.843021 135578360444736 base_pytree_checkpoint_handler.py:129] [process=5] /jax/checkpoint/write/blocking_gbytes_per_sec: 2.424 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.6363120079040527 s) (per-host)
I0424 18:11:37.843071 135578360444736 base_pytree_checkpoint_handler.py:737] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.636373s (batch_requests_ready=0.265798s, total_serialization_initiated=0.370500s, others=0.000075s)
I0424 18:11:37.843176 135578360444736 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.640495s (all_items=0.000018s, per_item={'items': '0.00001836'}, temp_paths=0.640477)
I0424 18:11:37.844116 135454653400832 async_checkpointer.py:79] [process=5][thread=async_save] Background save thread started.
I0424 18:11:37.844285 135578360444736 async_checkpointer.py:561] Finished blocking save. Time taken: 1.343285s. Continuing background save to gs://lance-maxtext/linen_ckpt_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038/linen_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038_05_fp8/checkpoints/0.
I0424 18:11:37.859425 135578360444736 checkpoint_manager.py:1566] [process=5][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0424 18:11:37.859703 135447162386176 async_checkpointer.py:265] [process=5][thread=save_finalize] Waiting for background save thread=async_save.
I0424 18:11:37.859829 135578360444736 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038/linen_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038_05_fp8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777054296.498985, 'wait_for_prev_duration_secs': 6.0558319091796875e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777054296.5009675, 'checkpointer_blocking_duration_secs': 1.3434240818023682, 'get_old_steps_start_time': 1777054297.8444126, 'get_old_steps_duration_secs': 2.574920654296875e-05, 'checkpoint_manager_blocking_start_time': 1777054296.4971333, 'checkpoint_manager_blocking_duration_secs': 1.3626577854156494}
I0424 18:11:37.859946 135578360444736 checkpointing.py:408] Started an asynchronous checkpoint save for step 0
I0424 18:11:37.859997 135578360444736 max_utils.py:750] 
Memstats: After params initialized:
I0424 18:11:37.860044 135578360444736 max_utils.py:756] 	Using (GB) 0.45 / 31.25 (1.440000%) on TPU_18(process=5,(2,4,0,0))
I0424 18:11:37.860078 135578360444736 max_utils.py:756] 	Using (GB) 0.45 / 31.25 (1.440000%) on TPU_19(process=5,(3,4,0,0))
I0424 18:11:37.860105 135578360444736 max_utils.py:756] 	Using (GB) 0.45 / 31.25 (1.440000%) on TPU_22(process=5,(2,5,0,0))
I0424 18:11:37.860129 135578360444736 max_utils.py:756] 	Using (GB) 0.45 / 31.25 (1.440000%) on TPU_23(process=5,(3,5,0,0))
I0424 18:11:38.125743 135578360444736 metric_logger.py:185] completed step: 0, seconds: 14.730, TFLOP/s/device: 0.922, Tokens/s/device: 139.033, total_weights: 65536, loss: 10.874
I0424 18:11:38.305861 135578360444736 metric_logger.py:185] completed step: 1, seconds: 1.794, TFLOP/s/device: 7.573, Tokens/s/device: 1141.542, total_weights: 65536, loss: 10.874
I0424 18:11:38.738279 135578360444736 metric_logger.py:185] completed step: 2, seconds: 0.023, TFLOP/s/device: 588.799, Tokens/s/device: 88750.217, total_weights: 65536, loss: 10.816
I0424 18:11:38.896615 135578360444736 metric_logger.py:185] completed step: 3, seconds: 0.433, TFLOP/s/device: 31.386, Tokens/s/device: 4730.819, total_weights: 65536, loss: 10.431
I0424 18:11:39.214170 135578360444736 metric_logger.py:185] completed step: 4, seconds: 0.163, TFLOP/s/device: 83.197, Tokens/s/device: 12540.337, total_weights: 65536, loss: 9.992
I0424 18:11:39.220732 135578360444736 metric_logger.py:185] completed step: 5, seconds: 0.158, TFLOP/s/device: 85.920, Tokens/s/device: 12950.796, total_weights: 65536, loss: 9.549
I0424 18:11:59.532082 135578360444736 metric_logger.py:185] completed step: 6, seconds: 0.318, TFLOP/s/device: 42.684, Tokens/s/device: 6433.777, total_weights: 65536, loss: 9.111
I0424 18:11:59.690408 135578360444736 metric_logger.py:185] completed step: 7, seconds: 20.155, TFLOP/s/device: 0.674, Tokens/s/device: 101.614, total_weights: 65536, loss: 8.685
I0424 18:11:59.848798 135578360444736 metric_logger.py:185] completed step: 8, seconds: 0.163, TFLOP/s/device: 83.530, Tokens/s/device: 12590.603, total_weights: 65536, loss: 8.281
I0424 18:11:59.853709 135578360444736 checkpointing.py:772] Waiting for step 10 to finish before checkpoint...
I0424 18:12:00.165467 135578360444736 checkpointing.py:776] Waited 0.3117222785949707 seconds for step 10 to finish before starting checkpointing.
I0424 18:12:00.168117 135578360444736 checkpoint_manager.py:2024] [process=5][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0424 18:12:00.632409    2700 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0424 18:12:02.569988 135454661793536 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 81 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038/linen_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038_05_fp8/checkpoints/0/items/array_metadatas/process_5
I0424 18:12:17.627844 135454653400832 base_pytree_checkpoint_handler.py:129] [process=5] /jax/checkpoint/write/gbytes_per_sec: 39.083 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 40.42107391357422 s) (per-host)
I0424 18:12:17.627962 135454653400832 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 39.783731s.
I0424 18:12:24.955799 135454653400832 async_checkpointer.py:144] [process=5][thread=async_save] Background save thread done. Time taken: 47.111552s.
I0424 18:12:24.956116 135447162386176 async_checkpointer.py:273] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save.
I0424 18:12:24.956241 135447162386176 async_checkpointer.py:283] [process=5][thread=save_finalize] No errors found in background save thread=async_save.
I0424 18:12:24.956303 135447162386176 checkpoint_manager.py:2133] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0424 18:12:24.957869 135447162386176 checkpoint_manager.py:2142] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0424 18:12:24.958049 135578360444736 checkpoint_manager.py:2036] [process=5][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0.
W0424 18:12:24.958200 135578360444736 checkpoint_manager.py:1458] Waiting for previous save to complete took 24.790081 seconds. If this number is high, consider checkpointing less frequently.
I0424 18:12:24.960282 135578360444736 checkpoint_manager.py:1518] [process=5] Saving checkpoint at step 10
I0424 18:12:24.963753 135578360444736 async_checkpointer.py:452] [process=5] Started async saving checkpoint to gs://lance-maxtext/linen_ckpt_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038/linen_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038_05_fp8/checkpoints/10.
I0424 18:12:25.503329 135578360444736 jax_array_handlers.py:358] Scheduling D2H of 81 prioritized jax.Array.
I0424 18:12:25.503432 135578360444736 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False
I0424 18:12:25.557786 135578360444736 base_pytree_checkpoint_handler.py:153] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.055478s
I0424 18:12:25.557954 135578360444736 base_pytree_checkpoint_handler.py:129] [process=5] /jax/checkpoint/write/blocking_gbytes_per_sec: 4.883 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.3159470558166504 s) (per-host)
I0424 18:12:25.558012 135578360444736 base_pytree_checkpoint_handler.py:737] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.316009s (batch_requests_ready=0.256994s, total_serialization_initiated=0.058944s, others=0.000071s)
I0424 18:12:25.558112 135578360444736 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.320340s (all_items=0.000015s, per_item={'items': '0.00001526'}, temp_paths=0.320324)
I0424 18:12:25.559009 135449276299008 async_checkpointer.py:79] [process=5][thread=async_save] Background save thread started.
I0424 18:12:25.559165 135578360444736 async_checkpointer.py:561] Finished blocking save. Time taken: 0.598814s. Continuing background save to gs://lance-maxtext/linen_ckpt_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038/linen_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038_05_fp8/checkpoints/10.
I0424 18:12:25.585376 135578360444736 checkpoint_manager.py:1566] [process=5][thread=MainThread][step=10] Starting CheckpointManager Save Finalize thread=save_finalize
I0424 18:12:25.585699 135447162386176 async_checkpointer.py:265] [process=5][thread=save_finalize] Waiting for background save thread=async_save.
I0424 18:12:25.585867 135578360444736 standard_logger.py:34] {'step': 10, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038/linen_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038_05_fp8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777054320.16809, 'wait_for_prev_duration_secs': 24.790081024169922, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777054344.960321, 'checkpointer_blocking_duration_secs': 0.5989565849304199, 'get_old_steps_start_time': 1777054345.5592995, 'get_old_steps_duration_secs': 2.8848648071289062e-05, 'checkpoint_manager_blocking_start_time': 1777054320.166272, 'checkpoint_manager_blocking_duration_secs': 25.419560432434082}
I0424 18:12:25.585995 135578360444736 checkpointing.py:408] Started an asynchronous checkpoint save for step 10
I0424 18:12:25.586408 135578360444736 metric_logger.py:185] completed step: 9, seconds: 0.158, TFLOP/s/device: 85.785, Tokens/s/device: 12930.436, total_weights: 65536, loss: 7.908
I0424 18:12:25.593274 135578360444736 metric_logger.py:185] completed step: 10, seconds: 0.158, TFLOP/s/device: 85.911, Tokens/s/device: 12949.404, total_weights: 65536, loss: 7.568
I0424 18:12:25.751307 135578360444736 metric_logger.py:185] completed step: 11, seconds: 25.738, TFLOP/s/device: 0.528, Tokens/s/device: 79.572, total_weights: 65536, loss: 7.288
I0424 18:12:25.909404 135578360444736 metric_logger.py:185] completed step: 12, seconds: 0.006, TFLOP/s/device: 2278.573, Tokens/s/device: 343451.283, total_weights: 65536, loss: 7.032
I0424 18:12:26.067629 135578360444736 metric_logger.py:185] completed step: 13, seconds: 0.159, TFLOP/s/device: 85.384, Tokens/s/device: 12870.061, total_weights: 65536, loss: 6.815
I0424 18:12:26.225777 135578360444736 metric_logger.py:185] completed step: 14, seconds: 0.158, TFLOP/s/device: 85.907, Tokens/s/device: 12948.912, total_weights: 65536, loss: 6.635
I0424 18:12:26.383911 135578360444736 metric_logger.py:185] completed step: 15, seconds: 0.158, TFLOP/s/device: 85.897, Tokens/s/device: 12947.357, total_weights: 65536, loss: 6.492
I0424 18:12:26.542207 135578360444736 metric_logger.py:185] completed step: 16, seconds: 0.158, TFLOP/s/device: 85.838, Tokens/s/device: 12938.441, total_weights: 65536, loss: 6.380
I0424 18:12:26.700313 135578360444736 metric_logger.py:185] completed step: 17, seconds: 0.158, TFLOP/s/device: 86.028, Tokens/s/device: 12967.114, total_weights: 65536, loss: 6.293
I0424 18:12:26.858668 135578360444736 metric_logger.py:185] completed step: 18, seconds: 0.158, TFLOP/s/device: 85.837, Tokens/s/device: 12938.278, total_weights: 65536, loss: 6.223
I0424 18:12:27.016359 135578360444736 checkpointing.py:772] Waiting for step 19 to finish before checkpoint...
I0424 18:12:27.017348 135578360444736 checkpointing.py:776] Waited 0.0010030269622802734 seconds for step 19 to finish before starting checkpointing.
I0424 18:12:27.019438 135578360444736 checkpoint_manager.py:2024] [process=5][thread=MainThread][step=10][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0424 18:12:30.318593 135447120422656 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 81 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038/linen_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038_05_fp8/checkpoints/10/items/array_metadatas/process_5
I0424 18:13:06.644141 135449276299008 base_pytree_checkpoint_handler.py:129] [process=5] /jax/checkpoint/write/gbytes_per_sec: 38.157 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.40209102630615 s) (per-host)
I0424 18:13:06.644262 135449276299008 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.085143s.
I0424 18:13:14.114394 135449276299008 async_checkpointer.py:144] [process=5][thread=async_save] Background save thread done. Time taken: 48.555260s.
I0424 18:13:14.114706 135447162386176 async_checkpointer.py:273] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save.
I0424 18:13:14.114828 135447162386176 async_checkpointer.py:283] [process=5][thread=save_finalize] No errors found in background save thread=async_save.
I0424 18:13:14.114892 135447162386176 checkpoint_manager.py:2133] [process=5][thread=save_finalize][step=10] CheckpointManager Save Finalize is syncing with other hosts...
I0424 18:13:14.116359 135447162386176 checkpoint_manager.py:2142] [process=5][thread=save_finalize][step=10] CheckpointManager Save Finalize is done on all hosts.
I0424 18:13:14.116537 135578360444736 checkpoint_manager.py:2036] [process=5][thread=MainThread][step=10][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=10.
W0424 18:13:14.116667 135578360444736 checkpoint_manager.py:1458] Waiting for previous save to complete took 47.097231 seconds. If this number is high, consider checkpointing less frequently.
I0424 18:13:14.120196 135578360444736 checkpoint_manager.py:1518] [process=5] Saving checkpoint at step 19
I0424 18:13:14.123532 135578360444736 async_checkpointer.py:452] [process=5] Started async saving checkpoint to gs://lance-maxtext/linen_ckpt_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038/linen_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038_05_fp8/checkpoints/19.
I0424 18:13:15.063315 135578360444736 jax_array_handlers.py:358] Scheduling D2H of 81 prioritized jax.Array.
I0424 18:13:15.063414 135578360444736 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False
I0424 18:13:15.118586 135578360444736 base_pytree_checkpoint_handler.py:153] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.056300s
I0424 18:13:15.118769 135578360444736 base_pytree_checkpoint_handler.py:129] [process=5] /jax/checkpoint/write/blocking_gbytes_per_sec: 4.946 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.31191515922546387 s) (per-host)
I0424 18:13:15.118822 135578360444736 base_pytree_checkpoint_handler.py:737] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.311978s (batch_requests_ready=0.252131s, total_serialization_initiated=0.059779s, others=0.000068s)
I0424 18:13:15.118925 135578360444736 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.316004s (all_items=0.000010s, per_item={'items': '0.00001001'}, temp_paths=0.315994)
I0424 18:13:15.119805 135447120422656 async_checkpointer.py:79] [process=5][thread=async_save] Background save thread started.
I0424 18:13:15.119984 135578360444736 async_checkpointer.py:561] Finished blocking save. Time taken: 0.999722s. Continuing background save to gs://lance-maxtext/linen_ckpt_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038/linen_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038_05_fp8/checkpoints/19.
I0424 18:13:15.141494 135578360444736 checkpoint_manager.py:1566] [process=5][thread=MainThread][step=19] Starting CheckpointManager Save Finalize thread=save_finalize
I0424 18:13:15.141747 135447162386176 async_checkpointer.py:265] [process=5][thread=save_finalize] Waiting for background save thread=async_save.
I0424 18:13:15.141884 135578360444736 standard_logger.py:34] {'step': 19, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038/linen_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038_05_fp8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777054347.0194092, 'wait_for_prev_duration_secs': 47.09723091125488, 'time_between_consecutive_saves_sec': 2.0615015029907227, 'checkpointer_blocking_start_time': 1777054394.1202345, 'checkpointer_blocking_duration_secs': 0.9998595714569092, 'get_old_steps_start_time': 1777054395.120108, 'get_old_steps_duration_secs': 2.09808349609375e-05, 'checkpoint_manager_blocking_start_time': 1777054347.0176153, 'checkpoint_manager_blocking_duration_secs': 48.1242356300354}
I0424 18:13:15.142005 135578360444736 checkpointing.py:408] Started an asynchronous checkpoint save for step 19
I0424 18:13:15.142048 135578360444736 checkpoint_manager.py:2024] [process=5][thread=MainThread][step=19][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0424 18:13:20.231064 135447690864384 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 81 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038/linen_xpk_feat_Migrate_Decoder_And_Tests_to_NNX_20260424_180038_05_fp8/checkpoints/19/items/array_metadatas/process_5
I0424 18:13:57.673338 135447120422656 base_pytree_checkpoint_handler.py:129] [process=5] /jax/checkpoint/write/gbytes_per_sec: 36.853 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.866442918777466 s) (per-host)
I0424 18:13:57.673439 135447120422656 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.553523s.
I0424 18:14:05.842536 135447120422656 async_checkpointer.py:144] [process=5][thread=async_save] Background save thread done. Time taken: 50.722604s.
I0424 18:14:05.842847 135447162386176 async_checkpointer.py:273] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save.
I0424 18:14:05.842971 135447162386176 async_checkpointer.py:283] [process=5][thread=save_finalize] No errors found in background save thread=async_save.
I0424 18:14:05.843014 135447162386176 checkpoint_manager.py:2133] [process=5][thread=save_finalize][step=19] CheckpointManager Save Finalize is syncing with other hosts...
I0424 18:14:05.844691 135447162386176 checkpoint_manager.py:2142] [process=5][thread=save_finalize][step=19] CheckpointManager Save Finalize is done on all hosts.
I0424 18:14:05.844859 135578360444736 checkpoint_manager.py:2036] [process=5][thread=MainThread][step=19][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=19.
I0424 18:14:05.845005 135578360444736 checkpoint_manager.py:2013] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0424 18:14:05.845674 135578360444736 metric_logger.py:185] completed step: 19, seconds: 0.158, TFLOP/s/device: 85.942, Tokens/s/device: 12954.154, total_weights: 65536, loss: 6.167
Per train step:
 Total TFLOPs: 13.59 
 split as 93.93% learnable weight flops and 6.07% attention flops
XPK End: Fri Apr 24 18:14:17 UTC 2026
EXIT_CODE=0