2026-04-23 02:55:25.671426: 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 00:00:1776912925.685151 2347502 cuda_dnn.cc:8579] Unable to register cuDNN factory: Attempting to register factory for plugin cuDNN when one has already been registered E0000 00:00:1776912925.689197 2347502 cuda_blas.cc:1407] Unable to register cuBLAS factory: Attempting to register factory for plugin cuBLAS when one has already been registered W0000 00:00:1776912925.701778 2347502 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once. W0000 00:00:1776912925.701794 2347502 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once. W0000 00:00:1776912925.701795 2347502 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once. W0000 00:00:1776912925.701797 2347502 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once. Unrecognized keys in `rope_scaling` for 'rope_type'='yarn': {'rope_theta'} `rope_scaling`'s factor field must be a float >= 1, got 40 `rope_scaling`'s beta_fast field must be a float, got 32 `rope_scaling`'s beta_slow field must be a float, got 1 Unrecognized keys in `rope_scaling` for 'rope_type'='yarn': {'rope_theta'} Unrecognized keys in `rope_scaling` for 'rope_type'='yarn': {'rope_theta'} Unrecognized keys in `rope_scaling` for 'rope_type'='yarn': {'rope_theta'} 2026-04-23 02:55:29.375570: 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) I0423 02:55:29.510562 133268286805824 max_utils.py:238] Skipping jax distributed system due to skip_jax_distributed_system=True flag. ~/maxtext/maxtext_venv/lib/python3.12/site-packages/jax/_src/xla_bridge.py:204: UserWarning: TPU backend initialization is taking more than 60.0 seconds. Did you run your code on all TPU hosts? See https://docs.jax.dev/en/latest/multi_process.html for more information. warnings.warn( I0423 02:56:31.945863 133268286805824 max_utils.py:800] System Information: Jax Version: 0.8.1 I0423 02:56:31.946110 133268286805824 max_utils.py:801] System Information: Jaxlib Version: 0.8.1 I0423 02:56:31.946157 133268286805824 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 I0423 02:56:31.946187 133268286805824 train_utils.py:348] WARNING: 'dataset_path' might be pointing your local file system I0423 02:56:31.946357 133268286805824 train.py:672] [DECOUPLED NO-OP] skipping cloud diagnostics wrapper. I0423 02:56:32.611013 133268286805824 maxtext_utils.py:1604] Num_devices: 8, shape (1, 1, 1, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0423 02:56:32.611294 133268286805824 checkpointing.py:677] Setting up checkpoint logger... I0423 02:56:32.611339 133268286805824 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True I0423 02:56:32.611374 133268286805824 pytree_checkpoint_handler.py:577] save_device_host_concurrent_bytes=None I0423 02:56:32.611799 133268286805824 base_pytree_checkpoint_handler.py:411] 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 0x7934a75aad20>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0423 02:56:35.005704 133268286805824 checkpointing.py:265] Enabling policy for fixed interval checkpointing. I0423 02:56:35.006083 133268286805824 checkpoint_manager.py:702] [process=0][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x793353fd9b80>}, handler_registry=None I0423 02:56:35.006299 133268286805824 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x793353fd9b80>` 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`. I0423 02:56:35.006338 133268286805824 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7933dd6ed8e0>` 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`. I0423 02:56:35.006367 133268286805824 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 0x793353fd9b80>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x793353fd9b80>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7933dd6ed8e0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7933dd6ed8e0>}). I0423 02:56:35.006646 133268286805824 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.28 I0423 02:56:35.006696 133268286805824 async_checkpointer.py:177] [process=0][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>.<lambda> at 0x7932d274c540> timeout: 600 secs and primary_host=0 for async checkpoint writes I0423 02:56:35.182484 133268286805824 checkpoint_manager.py:1788] Found 0 checkpoint steps in gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_05_fp8/checkpoints I0423 02:56:35.182716 133268286805824 checkpoint_manager.py:921] [process=0][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_hns=False, 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), root_directory=gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_05_fp8/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x79334bd60d10> I0423 02:56:35.182992 133268286805824 checkpointing.py:301] Checkpoint manager created! I0423 02:56:35.259943 133268286805824 dataset_info.py:707] Load dataset info from tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0 I0423 02:56:35.262703 133268286805824 reader.py:262] Creating a tf.data.Dataset reading 8 files located in folders: tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0. I0423 02:56:35.321975 133268286805824 logging_logger.py:49] Constructing tf.data.Dataset __local_c4_builder for split train, from tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0 I0423 02:56:35.344583 133268286805824 tokenizer.py:245] Tokenizer path: src/maxtext/assets/tokenizers/tokenizer.llama2 I0423 02:56:35.344650 133268286805824 tokenizer.py:187] Loading sentencepiece tokenizer: src/maxtext/assets/tokenizers/tokenizer.llama2 I0423 02:56:36.116802 133268286805824 nnx_wrappers.py:437] Unknown Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0423 02:56:36.116900 133268286805824 nnx_wrappers.py:437] Unknown Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0423 02:56:36.422522 133268286805824 attentions.py:1088] attentions/inputs_q Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0423 02:56:36.422602 133268286805824 attentions.py:1088] attentions/inputs_q Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0423 02:56:36.435237 133268286805824 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0423 02:56:36.435284 133268286805824 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0423 02:56:36.484883 133268286805824 attentions.py:1154] attentions/query Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0423 02:56:36.484953 133268286805824 attentions.py:1154] attentions/query Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0423 02:56:36.497722 133268286805824 attentions.py:1155] attentions/key Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0423 02:56:36.497773 133268286805824 attentions.py:1155] attentions/key Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0423 02:56:36.510434 133268286805824 attentions.py:1156] attentions/value Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0423 02:56:36.510483 133268286805824 attentions.py:1156] attentions/value Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0423 02:56:36.530258 133268286805824 attentions.py:1198] attentions/out Logical: bfloat16[8,2048,16,128]..................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0423 02:56:36.530316 133268286805824 attentions.py:1198] attentions/out Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0423 02:56:36.579562 133268286805824 linears.py:525] linears/x Logical: bfloat16[8,2048,7168]....................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0423 02:56:36.579630 133268286805824 linears.py:525] linears/x Physical: bfloat16[8,2048,7168]....................................... ('fsdp', None, None). I0423 02:56:37.231343 133268286805824 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint I0423 02:56:37.231440 133268286805824 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint. [DECOUPLED NO-OP] gcs_storage: using stubs. [DECOUPLED NO-OP] mldiagnostics: using stub. [DECOUPLED NO-OP] mldiagnostics: using stub. [DECOUPLED NO-OP] mldiagnostics: using stub. [DECOUPLED NO-OP] workload_monitor: using stub. [DECOUPLED NO-OP] vertex_tensorboard: using stub. fsdp: 8 I0423 02:56:38.328937 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0423 02:56:38.329061 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0423 02:56:38.329105 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0423 02:56:38.329135 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0423 02:56:38.329163 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0423 02:56:38.329187 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0423 02:56:38.329211 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0423 02:56:38.329233 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0423 02:56:38.329257 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0423 02:56:38.329281 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0423 02:56:38.329303 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0423 02:56:38.329324 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0423 02:56:38.329345 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0423 02:56:38.329367 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0423 02:56:38.329388 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0423 02:56:38.329408 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0423 02:56:38.329428 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0423 02:56:38.329448 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0423 02:56:38.329468 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0423 02:56:38.329488 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0423 02:56:38.329508 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0423 02:56:38.329527 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0423 02:56:38.329547 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0423 02:56:38.329568 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0423 02:56:38.329588 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0423 02:56:38.329608 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0423 02:56:38.329628 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0423 02:56:38.329648 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0423 02:56:38.329668 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0423 02:56:38.329688 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0423 02:56:38.329709 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0423 02:56:38.329729 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0423 02:56:38.329749 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0423 02:56:38.329768 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0423 02:56:38.329788 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0423 02:56:38.329808 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0423 02:56:38.329828 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0423 02:56:38.329853 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0423 02:56:38.329873 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0423 02:56:38.329893 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0423 02:56:38.329912 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0423 02:56:38.329931 133268286805824 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0423 02:56:38.329971 133268286805824 maxtext_utils.py:1707] params/params/decoder/decoder_norm/scale Shape: float32[2048] Logical: PartitionSpec('norm',) Physical: (None,) I0423 02:56:38.330012 133268286805824 maxtext_utils.py:1707] params/params/decoder/layers/mlp/wi_0/kernel Shape: float32[2048,16,7168] Logical: PartitionSpec('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0423 02:56:38.330039 133268286805824 maxtext_utils.py:1707] params/params/decoder/layers/mlp/wi_1/kernel Shape: float32[2048,16,7168] Logical: PartitionSpec('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0423 02:56:38.330092 133268286805824 maxtext_utils.py:1707] params/params/decoder/layers/mlp/wo/kernel Shape: float32[7168,16,2048] Logical: PartitionSpec('mlp', 'layers', 'embed') Physical: (None, None, 'fsdp') I0423 02:56:38.330126 133268286805824 maxtext_utils.py:1707] params/params/decoder/layers/post_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: PartitionSpec('norm', 'layers') Physical: (None, None) I0423 02:56:38.330150 133268286805824 maxtext_utils.py:1707] params/params/decoder/layers/pre_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: PartitionSpec('norm', 'layers') Physical: (None, None) I0423 02:56:38.330184 133268286805824 maxtext_utils.py:1707] 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) I0423 02:56:38.330219 133268286805824 maxtext_utils.py:1707] 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') I0423 02:56:38.330245 133268286805824 maxtext_utils.py:1707] 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) I0423 02:56:38.330270 133268286805824 maxtext_utils.py:1707] 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) I0423 02:56:38.330302 133268286805824 maxtext_utils.py:1707] params/params/decoder/logits_dense/kernel Shape: float32[2048,32000] Logical: PartitionSpec('embed_vocab', 'vocab') Physical: ('fsdp', None) I0423 02:56:38.330335 133268286805824 maxtext_utils.py:1707] params/params/token_embedder/embedding Shape: float32[32000,2048] Logical: PartitionSpec('vocab', 'embed_vocab') Physical: (None, 'fsdp') I0423 02:56:39.778299 133268286805824 train.py:155] train/xent Logical: float32[8,2048]............................................. ('activation_embed_and_logits_batch', 'activation_length'). I0423 02:56:39.778379 133268286805824 train.py:155] train/xent Physical: float32[8,2048]............................................. ('fsdp', None). I0423 02:56:39.790396 133268286805824 train.py:162] train/z_loss Logical: float32[8,2048]............................................. ('activation_embed_and_logits_batch', 'activation_length'). I0423 02:56:39.790444 133268286805824 train.py:162] train/z_loss Physical: float32[8,2048]............................................. ('fsdp', None). I0423 02:56:50.246366 133268286805824 max_utils.py:791] Total memory size: 3.5 GB, Output size: 1.5 GB, Temp size: 1.9 GB, Argument size: 1.5 GB, Host temp size: 0.0 GB. I0423 02:56:50.247325 133268286805824 max_utils.py:194] tensorboardX not available; using no-op SummaryWriter. I0423 02:56:50.247603 133268286805824 metric_logger.py:301] number parameters: 1.105 billion I0423 02:57:03.492332 133268286805824 checkpointing.py:772] Waiting for step 0 to finish before checkpoint... I0423 02:57:03.619258 133268286805824 checkpointing.py:776] Waited 0.12692499160766602 seconds for step 0 to finish before starting checkpointing. I0423 02:57:03.621607 133268286805824 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0423 02:57:03.621776 133268286805824 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 0 I0423 02:57:03.622161 133268286805824 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_05_fp8/checkpoints/0. I0423 02:57:03.732146 133268286805824 signaling_client.py:373] Using ThreadSafeKeyValueSignalingClient I0423 02:57:03.834199 133268286805824 jax_array_handlers.py:347] Scheduling D2H of 81 prioritized jax.Array. I0423 02:57:03.834336 133140618151488 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_05_fp8/checkpoints/0 I0423 02:57:03.834697 133268286805824 replica_slices.py:410] 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 I0423 02:57:04.525526 133140607665728 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_05_fp8/checkpoints/0/items I0423 02:57:04.676365 133140576208448 checkpoint.py:188] Wrote Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776913024432657419, 'commit_timestamp_nsecs': None, 'custom_metadata': {}}, json={"item_handlers": null, "metrics": {}, "performance_metrics": {}, "init_timestamp_nsecs": 1776913024432657419, "commit_timestamp_nsecs": null, "custom_metadata": {}} to gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_05_fp8/checkpoints/0/_CHECKPOINT_METADATA I0423 02:57:05.032537 2350597 google_auth_provider.cc:149] Using credentials at ~/.config/gcloud/application_default_credentials.json I0423 02:57:05.032588 2350597 google_auth_provider.cc:156] Using OAuth2 AuthProvider I0423 02:57:06.682466 133268286805824 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 2.848854s I0423 02:57:06.690381 133268286805824 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 4.173 GiB/s (total gbytes: 12.3 GiB) (time elapsed: 2 seconds) (per-host) I0423 02:57:06.690482 133268286805824 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 2.957376s (batch_requests_ready=0.093438s, total_serialization_initiated=2.856087s, others=0.007851s) I0423 02:57:06.690590 133268286805824 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 2.958001s (all_items=0.000025s, per_item={'items': '0.00002503'}, temp_paths=2.957976) I0423 02:57:06.692179 133140628637248 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0423 02:57:06.692258 133268286805824 async_checkpointer.py:561] Finished blocking save. Time taken: 3.070442s. Continuing background save to gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_05_fp8/checkpoints/0. I0423 02:57:06.692443 133268286805824 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0423 02:57:06.692692 133139756222016 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0423 02:57:06.692795 133268286805824 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_05_fp8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776913023.6215875, 'wait_for_prev_duration_secs': 5.14984130859375e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776913023.6217978, 'checkpointer_blocking_duration_secs': 3.070566415786743, 'get_old_steps_start_time': 1776913026.692381, 'get_old_steps_duration_secs': 2.6464462280273438e-05, 'checkpoint_manager_blocking_start_time': 1776913023.6215026, 'checkpoint_manager_blocking_duration_secs': 3.0712668895721436} I0423 02:57:06.692918 133268286805824 checkpointing.py:408] Started an asynchronous checkpoint save for step 0 I0423 02:57:06.692973 133268286805824 max_utils.py:750] Memstats: After params initialized: I0423 02:57:06.693026 133268286805824 max_utils.py:756] Using (GB) 1.61 / 31.25 (5.152000%) on TPU_0(process=0,(0,0,0,0)) I0423 02:57:06.693067 133268286805824 max_utils.py:756] Using (GB) 1.61 / 31.25 (5.152000%) on TPU_1(process=0,(1,0,0,0)) I0423 02:57:06.693089 133268286805824 max_utils.py:756] Using (GB) 1.61 / 31.25 (5.152000%) on TPU_2(process=0,(0,1,0,0)) I0423 02:57:06.693107 133268286805824 max_utils.py:756] Using (GB) 1.61 / 31.25 (5.152000%) on TPU_3(process=0,(1,1,0,0)) I0423 02:57:06.693125 133268286805824 max_utils.py:756] Using (GB) 1.61 / 31.25 (5.152000%) on TPU_4(process=0,(0,2,0,0)) I0423 02:57:06.693147 133268286805824 max_utils.py:756] Using (GB) 1.61 / 31.25 (5.152000%) on TPU_5(process=0,(1,2,0,0)) I0423 02:57:06.693164 133268286805824 max_utils.py:756] Using (GB) 1.61 / 31.25 (5.152000%) on TPU_6(process=0,(0,3,0,0)) I0423 02:57:06.693181 133268286805824 max_utils.py:756] Using (GB) 1.61 / 31.25 (5.152000%) on TPU_7(process=0,(1,3,0,0)) I0423 02:57:07.083422 133268286805824 metric_logger.py:196] completed step: 0, seconds: 13.244, TFLOP/s/device: 1.026, Tokens/s/device: 154.635, total_weights: 13328, loss: 10.844, lm_loss: 10.844, perplexity: 51212.484 I0423 02:57:07.084377 133268286805824 metric_logger.py:281] To see full metrics 'tensorboard --logdir=gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_05_fp8/tensorboard/' I0423 02:57:07.192438 133268286805824 metric_logger.py:196] completed step: 1, seconds: 3.588, TFLOP/s/device: 3.787, Tokens/s/device: 570.856, total_weights: 12332, loss: nan, lm_loss: nan, perplexity: nan I0423 02:57:07.193419 133268286805824 metric_logger.py:237] Aborting training due to NaN loss. I0423 02:57:07.193533 133268286805824 metric_logger.py:196] completed step: 1, seconds: 3.588, TFLOP/s/device: 3.787, Tokens/s/device: 570.856, total_weights: 12332, loss: nan, lm_loss: nan, perplexity: nan I0423 02:57:07.193746 133268286805824 metric_logger.py:237] Aborting training due to NaN loss. E0423 02:57:07.202482 133140586694208 future.py:315] [process=0][thread=array_type_handler][operation_id=1] _SignalingThread.run() raised an exception: cannot schedule new futures after shutdown Traceback (most recent call last): File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 312, in run super().run() File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/threading.py", line 1012, in run self._target(*self._args, **self._kwargs) File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 257, in _target_setting_result self._result = target() ^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 391, in <lambda> target=lambda: asyncio_utils.run_sync(coro), ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/asyncio_utils.py", line 36, in run_sync return asyncio.run(coro) ^^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/runners.py", line 195, in run return runner.run(main) ^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/runners.py", line 118, in run return self._loop.run_until_complete(task) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/base_events.py", line 691, in run_until_complete return future.result() ^^^^^^^^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/serialization/jax_array_handlers.py", line 363, in _serialize_without_dispatcher await async_serialize_replica_slices_batch( File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/serialization/jax_array_handlers.py", line 608, in _async_serialize_replica_slices await asyncio.gather(*write_coros) File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/metadata/array_metadata_store.py", line 195, in write if await async_path.exists(file_path): ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/path/async_path.py", line 67, in exists return await asyncio.to_thread(path.exists) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/threads.py", line 25, in to_thread return await loop.run_in_executor(None, func_call) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/base_events.py", line 867, in run_in_executor executor.submit(func, *args), loop=self) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/concurrent/futures/thread.py", line 171, in submit raise RuntimeError('cannot schedule new futures after shutdown') RuntimeError: cannot schedule new futures after shutdown E0423 02:57:07.205452 133139854788160 future.py:315] [process=0][thread=write_metadata_after_commits][operation_id=1] _SignalingThread.run() raised an exception: cannot schedule new futures after shutdown Traceback (most recent call last): File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 312, in run super().run() File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/threading.py", line 1012, in run self._target(*self._args, **self._kwargs) File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 257, in _target_setting_result self._result = target() ^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 391, in <lambda> target=lambda: asyncio_utils.run_sync(coro), ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/asyncio_utils.py", line 36, in run_sync return asyncio.run(coro) ^^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/runners.py", line 195, in run return runner.run(main) ^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/runners.py", line 118, in run return self._loop.run_until_complete(task) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/base_events.py", line 691, in run_until_complete return future.result() ^^^^^^^^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/handlers/base_pytree_checkpoint_handler.py", line 1192, in _write_metadata_after_commits await asyncio.to_thread(commit_future.result) File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/threads.py", line 25, in to_thread return await loop.run_in_executor(None, func_call) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/concurrent/futures/thread.py", line 59, in run result = self.fn(*self.args, **self.kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 449, in result return self._f.result(timeout=timeout) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 398, in result return self._t.result(timeout=timeout) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 347, in result self.join(timeout=timeout) File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 344, in join raise self._exception File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 312, in run super().run() File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/threading.py", line 1012, in run self._target(*self._args, **self._kwargs) File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 257, in _target_setting_result self._result = target() ^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 391, in <lambda> target=lambda: asyncio_utils.run_sync(coro), ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/asyncio_utils.py", line 36, in run_sync return asyncio.run(coro) ^^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/runners.py", line 195, in run return runner.run(main) ^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/runners.py", line 118, in run return self._loop.run_until_complete(task) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/base_events.py", line 691, in run_until_complete return future.result() ^^^^^^^^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/serialization/jax_array_handlers.py", line 363, in _serialize_without_dispatcher await async_serialize_replica_slices_batch( File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/serialization/jax_array_handlers.py", line 608, in _async_serialize_replica_slices await asyncio.gather(*write_coros) File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/metadata/array_metadata_store.py", line 195, in write if await async_path.exists(file_path): ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/path/async_path.py", line 67, in exists return await asyncio.to_thread(path.exists) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/threads.py", line 25, in to_thread return await loop.run_in_executor(None, func_call) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/base_events.py", line 867, in run_in_executor executor.submit(func, *args), loop=self) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/concurrent/futures/thread.py", line 171, in submit raise RuntimeError('cannot schedule new futures after shutdown') RuntimeError: cannot schedule new futures after shutdown E0423 02:57:07.207395 133140628637248 async_checkpointer.py:229] [process=0] Failed to run 3 Handler Commit operations or the Commit callback in background save thread, directory: gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_05_fp8/checkpoints/0 Traceback (most recent call last): File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/checkpointers/async_checkpointer.py", line 215, in _thread_func _background_wait_for_commit_futures( File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/checkpointers/async_checkpointer.py", line 88, in _background_wait_for_commit_futures commit_future.result() File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 196, in result f.result(timeout=time_remaining) File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 449, in result return self._f.result(timeout=timeout) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 398, in result return self._t.result(timeout=timeout) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 347, in result self.join(timeout=timeout) File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 344, in join raise self._exception File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 312, in run super().run() File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/threading.py", line 1012, in run self._target(*self._args, **self._kwargs) File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 257, in _target_setting_result self._result = target() ^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 391, in <lambda> target=lambda: asyncio_utils.run_sync(coro), ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/asyncio_utils.py", line 36, in run_sync return asyncio.run(coro) ^^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/runners.py", line 195, in run return runner.run(main) ^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/runners.py", line 118, in run return self._loop.run_until_complete(task) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/base_events.py", line 691, in run_until_complete return future.result() ^^^^^^^^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/handlers/base_pytree_checkpoint_handler.py", line 1192, in _write_metadata_after_commits await asyncio.to_thread(commit_future.result) File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/threads.py", line 25, in to_thread return await loop.run_in_executor(None, func_call) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/concurrent/futures/thread.py", line 59, in run result = self.fn(*self.args, **self.kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 449, in result return self._f.result(timeout=timeout) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 398, in result return self._t.result(timeout=timeout) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 347, in result self.join(timeout=timeout) File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 344, in join raise self._exception File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 312, in run super().run() File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/threading.py", line 1012, in run self._target(*self._args, **self._kwargs) File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 257, in _target_setting_result self._result = target() ^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/futures/future.py", line 391, in <lambda> target=lambda: asyncio_utils.run_sync(coro), ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/asyncio_utils.py", line 36, in run_sync return asyncio.run(coro) ^^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/runners.py", line 195, in run return runner.run(main) ^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/runners.py", line 118, in run return self._loop.run_until_complete(task) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/base_events.py", line 691, in run_until_complete return future.result() ^^^^^^^^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/serialization/jax_array_handlers.py", line 363, in _serialize_without_dispatcher await async_serialize_replica_slices_batch( File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/serialization/jax_array_handlers.py", line 608, in _async_serialize_replica_slices await asyncio.gather(*write_coros) File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/metadata/array_metadata_store.py", line 195, in write if await async_path.exists(file_path): ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/maxtext/maxtext_venv/lib/python3.12/site-packages/orbax/checkpoint/_src/path/async_path.py", line 67, in exists return await asyncio.to_thread(path.exists) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/threads.py", line 25, in to_thread return await loop.run_in_executor(None, func_call) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/asyncio/base_events.py", line 867, in run_in_executor executor.submit(func, *args), loop=self) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "~/.local/share/uv/python/cpython-3.12.12-linux-x86_64-gnu/lib/python3.12/concurrent/futures/thread.py", line 171, in submit raise RuntimeError('cannot schedule new futures after shutdown') RuntimeError: cannot schedule new futures after shutdown I0423 02:57:07.209382 133139756222016 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0423 02:57:07.209523 133139756222016 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0423 02:57:07.209612 133139756222016 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops