2026-04-21 15:05:52.016311: 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 00:00:1776783952.026598 1493670 cuda_dnn.cc:8579] Unable to register cuDNN factory: Attempting to register factory for plugin cuDNN when one has already been registered E0000 00:00:1776783952.029580 1493670 cuda_blas.cc:1407] Unable to register cuBLAS factory: Attempting to register factory for plugin cuBLAS when one has already been registered W0000 00:00:1776783952.039321 1493670 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once. W0000 00:00:1776783952.039331 1493670 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once. W0000 00:00:1776783952.039333 1493670 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once. W0000 00:00:1776783952.039334 1493670 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once. 2026-04-21 15:05:55.453527: 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) I0421 15:05:55.571375 131315320347776 max_utils.py:238] Skipping jax distributed system due to skip_jax_distributed_system=True flag. I0421 15:06:22.480978 131315320347776 max_utils.py:800] System Information: Jax Version: 0.8.1 I0421 15:06:22.481242 131315320347776 max_utils.py:801] System Information: Jaxlib Version: 0.8.1 I0421 15:06:22.481289 131315320347776 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 I0421 15:06:22.481319 131315320347776 train_utils.py:335] WARNING: 'dataset_path' might be pointing your local file system I0421 15:06:22.481446 131315320347776 train.py:703] [DECOUPLED NO-OP] skipping cloud diagnostics wrapper. I0421 15:06:22.837010 131315320347776 maxtext_utils.py:1551] Num_devices: 8, shape (1, 1, 1, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0421 15:06:22.837411 131315320347776 checkpointing.py:677] Setting up checkpoint logger... I0421 15:06:22.837460 131315320347776 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True I0421 15:06:22.837547 131315320347776 pytree_checkpoint_handler.py:577] save_device_host_concurrent_bytes=None I0421 15:06:22.838434 131315320347776 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 0x776deeba4650>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0421 15:06:25.266310 131315320347776 checkpointing.py:265] Enabling policy for fixed interval checkpointing. I0421 15:06:25.266610 131315320347776 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 0x776c493d6870>}, handler_registry=None I0421 15:06:25.267040 131315320347776 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x776c493d6870>` 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`. I0421 15:06:25.267103 131315320347776 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x776c48381f10>` 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`. I0421 15:06:25.267133 131315320347776 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 0x776c493d6870>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x776c493d6870>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x776c48381f10>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x776c48381f10>}). I0421 15:06:25.267461 131315320347776 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.28 I0421 15:06:25.267523 131315320347776 async_checkpointer.py:177] [process=0][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>.<lambda> at 0x776c483a4ea0> timeout: 600 secs and primary_host=0 for async checkpoint writes I0421 15:06:25.397320 131315320347776 checkpoint_manager.py:1788] Found 0 checkpoint steps in gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints I0421 15:06:25.397606 131315320347776 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_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x776c4873b710> I0421 15:06:25.397701 131315320347776 checkpointing.py:301] Checkpoint manager created! I0421 15:06:25.746380 131315320347776 dataset_info.py:707] Load dataset info from tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0 I0421 15:06:25.749346 131315320347776 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. I0421 15:06:25.802343 131315320347776 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 I0421 15:06:25.824531 131315320347776 tokenizer.py:245] Tokenizer path: src/maxtext/assets/tokenizers/tokenizer.llama2 I0421 15:06:25.824594 131315320347776 tokenizer.py:187] Loading sentencepiece tokenizer: src/maxtext/assets/tokenizers/tokenizer.llama2 I0421 15:06:26.353594 131315320347776 dataset_info.py:707] Load dataset info from tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0 I0421 15:06:26.355216 131315320347776 reader.py:262] Creating a tf.data.Dataset reading 2 files located in folders: tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0. I0421 15:06:26.371138 131315320347776 logging_logger.py:49] Constructing tf.data.Dataset __local_c4_builder for split validation, from tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0 I0421 15:06:26.373711 131315320347776 tokenizer.py:245] Tokenizer path: src/maxtext/assets/tokenizers/tokenizer.llama2 I0421 15:06:26.373760 131315320347776 tokenizer.py:187] Loading sentencepiece tokenizer: src/maxtext/assets/tokenizers/tokenizer.llama2 I0421 15:06:26.707358 131315320347776 nnx_wrappers.py:437] Unknown Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0421 15:06:26.707451 131315320347776 nnx_wrappers.py:437] Unknown Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0421 15:06:27.008454 131315320347776 attentions.py:1088] attentions/inputs_q Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0421 15:06:27.008544 131315320347776 attentions.py:1088] attentions/inputs_q Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0421 15:06:27.021054 131315320347776 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0421 15:06:27.021106 131315320347776 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0421 15:06:27.053697 131315320347776 attentions.py:1154] attentions/query Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0421 15:06:27.053778 131315320347776 attentions.py:1154] attentions/query Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0421 15:06:27.066441 131315320347776 attentions.py:1155] attentions/key Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0421 15:06:27.066496 131315320347776 attentions.py:1155] attentions/key Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0421 15:06:27.078966 131315320347776 attentions.py:1156] attentions/value Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0421 15:06:27.079014 131315320347776 attentions.py:1156] attentions/value Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0421 15:06:27.098854 131315320347776 attentions.py:1197] attentions/out Logical: bfloat16[8,2048,16,128]..................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0421 15:06:27.098916 131315320347776 attentions.py:1197] attentions/out Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0421 15:06:27.114620 131315320347776 linears.py:525] linears/x Logical: bfloat16[8,2048,7168]....................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0421 15:06:27.114674 131315320347776 linears.py:525] linears/x Physical: bfloat16[8,2048,7168]....................................... ('fsdp', None, None). I0421 15:06:27.268534 131315320347776 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint I0421 15:06:27.268633 131315320347776 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 I0421 15:06:27.883403 131315320347776 maxtext_utils.py:1654] params/params/decoder/decoder_norm/scale Shape: float32[2048] Logical: PartitionSpec('norm',) Physical: (None,) I0421 15:06:27.883517 131315320347776 maxtext_utils.py:1654] params/params/decoder/layers/mlp/wi_0/kernel Shape: float32[2048,16,7168] Logical: PartitionSpec('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0421 15:06:27.883559 131315320347776 maxtext_utils.py:1654] params/params/decoder/layers/mlp/wi_1/kernel Shape: float32[2048,16,7168] Logical: PartitionSpec('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0421 15:06:27.883605 131315320347776 maxtext_utils.py:1654] params/params/decoder/layers/mlp/wo/kernel Shape: float32[7168,16,2048] Logical: PartitionSpec('mlp', 'layers', 'embed') Physical: (None, None, 'fsdp') I0421 15:06:27.883646 131315320347776 maxtext_utils.py:1654] params/params/decoder/layers/post_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: PartitionSpec('norm', 'layers') Physical: (None, None) I0421 15:06:27.883677 131315320347776 maxtext_utils.py:1654] params/params/decoder/layers/pre_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: PartitionSpec('norm', 'layers') Physical: (None, None) I0421 15:06:27.883719 131315320347776 maxtext_utils.py:1654] 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) I0421 15:06:27.883767 131315320347776 maxtext_utils.py:1654] 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') I0421 15:06:27.883800 131315320347776 maxtext_utils.py:1654] 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) I0421 15:06:27.883830 131315320347776 maxtext_utils.py:1654] 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) I0421 15:06:27.883868 131315320347776 maxtext_utils.py:1654] params/params/decoder/logits_dense/kernel Shape: float32[2048,32000] Logical: PartitionSpec('embed_vocab', 'vocab') Physical: ('fsdp', None) I0421 15:06:27.883905 131315320347776 maxtext_utils.py:1654] params/params/token_embedder/embedding Shape: float32[32000,2048] Logical: PartitionSpec('vocab', 'embed_vocab') Physical: (None, 'fsdp') I0421 15:06:28.294680 131315320347776 train.py:155] train/xent Logical: float32[8,2048]............................................. ('activation_embed_and_logits_batch', 'activation_length'). I0421 15:06:28.294775 131315320347776 train.py:155] train/xent Physical: float32[8,2048]............................................. ('fsdp', None). I0421 15:06:28.306895 131315320347776 train.py:162] train/z_loss Logical: float32[8,2048]............................................. ('activation_embed_and_logits_batch', 'activation_length'). I0421 15:06:28.306947 131315320347776 train.py:162] train/z_loss Physical: float32[8,2048]............................................. ('fsdp', None). I0421 15:06:29.308348 131315320347776 max_utils.py:791] Total memory size: 3.6 GB, Output size: 1.5 GB, Temp size: 2.0 GB, Argument size: 1.5 GB, Host temp size: 0.0 GB. I0421 15:06:29.308892 131315320347776 max_utils.py:194] tensorboardX not available; using no-op SummaryWriter. I0421 15:06:29.309037 131315320347776 metric_logger.py:301] number parameters: 1.104 billion I0421 15:06:33.221704 131315320347776 checkpointing.py:772] Waiting for step 0 to finish before checkpoint... I0421 15:06:33.343138 131315320347776 checkpointing.py:776] Waited 0.12141656875610352 seconds for step 0 to finish before starting checkpointing. I0421 15:06:33.343608 131315320347776 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0421 15:06:33.343758 131315320347776 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 0 I0421 15:06:33.344180 131315320347776 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/0. I0421 15:06:33.424947 131315320347776 signaling_client.py:373] Using ThreadSafeKeyValueSignalingClient I0421 15:06:33.504574 131222781036096 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/0 I0421 15:06:33.521018 131315320347776 jax_array_handlers.py:347] Scheduling D2H of 39 prioritized jax.Array. I0421 15:06:33.521131 131315320347776 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 I0421 15:06:34.187656 131315320347776 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.667113s I0421 15:06:34.188330 131315320347776 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 16.190 GiB/s (total gbytes: 12.3 GiB) (time elapsed: 762 milliseconds) (per-host) I0421 15:06:34.188388 131315320347776 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 0.762356s (batch_requests_ready=0.091009s, total_serialization_initiated=0.670806s, others=0.000541s) I0421 15:06:34.188458 131315320347776 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.762948s (all_items=0.000019s, per_item={'items': '0.00001860'}, temp_paths=0.762929) I0421 15:06:34.189380 131222709732928 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0421 15:06:34.189517 131315320347776 async_checkpointer.py:561] Finished blocking save. Time taken: 0.845715s. Continuing background save to gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/0. I0421 15:06:34.189760 131315320347776 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0421 15:06:34.189969 131315320347776 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776783993.3435946, 'wait_for_prev_duration_secs': 4.100799560546875e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776783993.3437781, 'checkpointer_blocking_duration_secs': 0.8458857536315918, 'get_old_steps_start_time': 1776783994.1896873, 'get_old_steps_duration_secs': 2.6941299438476562e-05, 'checkpoint_manager_blocking_start_time': 1776783993.343508, 'checkpoint_manager_blocking_duration_secs': 0.8464305400848389} I0421 15:06:34.190065 131315320347776 checkpointing.py:408] Started an asynchronous checkpoint save for step 0 I0421 15:06:34.190113 131315320347776 max_utils.py:750] Memstats: After params initialized: I0421 15:06:34.190186 131315320347776 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_0(process=0,(0,0,0,0)) I0421 15:06:34.190213 131315320347776 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_1(process=0,(1,0,0,0)) I0421 15:06:34.190234 131315320347776 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_2(process=0,(0,1,0,0)) I0421 15:06:34.190253 131315320347776 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_3(process=0,(1,1,0,0)) I0421 15:06:34.190270 131315320347776 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_4(process=0,(0,2,0,0)) I0421 15:06:34.190287 131315320347776 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_5(process=0,(1,2,0,0)) I0421 15:06:34.190303 131315320347776 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_6(process=0,(0,3,0,0)) I0421 15:06:34.190320 131315320347776 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_7(process=0,(1,3,0,0)) I0421 15:06:34.252394 131222770550336 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/0/items I0421 15:06:34.404864 131222730704448 checkpoint.py:188] Wrote Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776783994156629522, 'commit_timestamp_nsecs': None, 'custom_metadata': {}}, json={"item_handlers": null, "metrics": {}, "performance_metrics": {}, "init_timestamp_nsecs": 1776783994156629522, "commit_timestamp_nsecs": null, "custom_metadata": {}} to gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/0/_CHECKPOINT_METADATA I0421 15:06:34.405198 131222791521856 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0421 15:06:34.618212 131315320347776 metric_logger.py:196] completed step: 0, seconds: 3.912, TFLOP/s/device: 3.473, Tokens/s/device: 523.501, total_weights: 13328, loss: 10.828, lm_loss: 10.828, perplexity: 50404.086 I0421 15:06:34.619251 131315320347776 metric_logger.py:281] To see full metrics 'tensorboard --logdir=gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/tensorboard/' I0421 15:06:34.732764 131315320347776 metric_logger.py:196] completed step: 1, seconds: 1.393, TFLOP/s/device: 9.754, Tokens/s/device: 1470.193, total_weights: 12332, loss: 10.828, lm_loss: 10.828, perplexity: 50391.758 I0421 15:06:34.787795 1496298 google_auth_provider.cc:149] Using credentials at ~/.config/gcloud/application_default_credentials.json I0421 15:06:34.787887 1496298 google_auth_provider.cc:156] Using OAuth2 AuthProvider I0421 15:06:34.850549 131315320347776 metric_logger.py:196] completed step: 2, seconds: 0.012, TFLOP/s/device: 1160.103, Tokens/s/device: 174863.388, total_weights: 15161, loss: 9.823, lm_loss: 9.823, perplexity: 18444.867 I0421 15:06:36.020914 131222781036096 array_metadata_store.py:203] [process=0][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/0/items/array_metadatas/process_0 I0421 15:06:42.649302 131315320347776 train.py:620] Completed eval step 0 I0421 15:06:42.691614 131315320347776 train.py:620] Completed eval step 1 I0421 15:06:42.696554 131315320347776 metric_logger.py:216] eval metrics after step: 4, loss=8.979, perplexity=7936.996, total_weights=26703.0 I0421 15:06:42.697111 131315320347776 metric_logger.py:196] completed step: 3, seconds: 0.116, TFLOP/s/device: 116.649, Tokens/s/device: 17582.569, total_weights: 13327, loss: 9.405, lm_loss: 9.405, perplexity: 12149.331 I0421 15:07:00.493808 131315320347776 metric_logger.py:196] completed step: 4, seconds: 0.118, TFLOP/s/device: 115.548, Tokens/s/device: 17416.595, total_weights: 11939, loss: 9.045, lm_loss: 9.045, perplexity: 8471.842 I0421 15:07:00.511221 131315320347776 metric_logger.py:196] completed step: 5, seconds: 7.845, TFLOP/s/device: 1.732, Tokens/s/device: 261.058, total_weights: 15502, loss: 8.953, lm_loss: 8.953, perplexity: 7728.546 I0421 15:07:00.625275 131315320347776 metric_logger.py:196] completed step: 6, seconds: 17.801, TFLOP/s/device: 0.763, Tokens/s/device: 115.047, total_weights: 13864, loss: 8.775, lm_loss: 8.775, perplexity: 6468.536 I0421 15:07:00.743087 131315320347776 metric_logger.py:196] completed step: 7, seconds: 0.013, TFLOP/s/device: 1012.378, Tokens/s/device: 152596.677, total_weights: 12988, loss: 8.688, lm_loss: 8.688, perplexity: 5928.887 I0421 15:07:01.441814 131315320347776 train.py:620] Completed eval step 0 I0421 15:07:01.481650 131315320347776 train.py:620] Completed eval step 1 I0421 15:07:01.484435 131315320347776 metric_logger.py:216] eval metrics after step: 9, loss=8.653, perplexity=5725.923, total_weights=26703.0 I0421 15:07:01.484850 131315320347776 metric_logger.py:196] completed step: 8, seconds: 0.111, TFLOP/s/device: 122.414, Tokens/s/device: 18451.614, total_weights: 13820, loss: 8.740, lm_loss: 8.740, perplexity: 6250.123 I0421 15:07:01.486784 131315320347776 checkpointing.py:772] Waiting for step 9 to finish before checkpoint... I0421 15:07:01.487377 131315320347776 checkpointing.py:776] Waited 0.0005931854248046875 seconds for step 9 to finish before starting checkpointing. I0421 15:07:01.487618 131315320347776 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0421 15:07:18.935664 131222760064576 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 44.154273s (commit=43.569222s, array_metadata_write=0.585051s) I0421 15:07:18.937060 131222709732928 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 277.665 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 45 seconds) (per-host) I0421 15:07:18.937209 131222709732928 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 44.747633s. I0421 15:07:19.185860 131222709732928 checkpoint.py:228] Read Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776783994156629522, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} from gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/0/_CHECKPOINT_METADATA I0421 15:07:19.370462 131222709732928 array_metadata_store.py:367] [process=0][thread=async_save] Skipped cross-host ArrayMetadata validation because only one process is found: process_index=0. I0421 15:07:19.570655 131222730704448 checkpoint.py:247] Updated Metadata={'item_handlers': {'items': 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler'}, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776783994156629522, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} to gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/0/_CHECKPOINT_METADATA I0421 15:07:19.809830 131222709732928 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389). I0421 15:07:19.810088 131222709732928 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.586430s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/0/items I0421 15:07:19.810913 131222709732928 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/0/items I0421 15:07:20.052954 131222709732928 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/0 I0421 15:07:20.763590 131222709732928 atomicity.py:794] [process=0][thread=async_save] Finished saving checkpoint (finalized tmp dir) to `gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/0`. I0421 15:07:20.764378 131222709732928 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 47.420586s. directory=gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/0 I0421 15:07:20.764521 131222709732928 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 46.574948s. I0421 15:07:20.764667 131222791521856 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0421 15:07:20.764720 131222791521856 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save. I0421 15:07:20.764797 131222791521856 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0421 15:07:20.764851 131222791521856 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0421 15:07:20.765025 131315320347776 checkpoint_manager.py:2006] [process=0][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0. W0421 15:07:20.765211 131315320347776 checkpoint_manager.py:1441] Waiting for previous save to complete took 19.277590 seconds. If this number is high, consider checkpointing less frequently. I0421 15:07:20.766143 131315320347776 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 9 I0421 15:07:20.766526 131315320347776 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/9. I0421 15:07:20.941793 131222791521856 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/9 I0421 15:07:20.945756 131315320347776 jax_array_handlers.py:347] Scheduling D2H of 39 prioritized jax.Array. I0421 15:07:20.945867 131315320347776 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 I0421 15:07:21.708382 131222770550336 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/9/items I0421 15:07:28.607589 131315320347776 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 7.662425s I0421 15:07:28.612406 131315320347776 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 1.589 GiB/s (total gbytes: 12.3 GiB) (time elapsed: 7 seconds) (per-host) I0421 15:07:28.612478 131315320347776 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 7.764165s (batch_requests_ready=0.093682s, total_serialization_initiated=7.665818s, others=0.004664s) I0421 15:07:28.612564 131315320347776 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 7.764817s (all_items=0.000026s, per_item={'items': '0.00002575'}, temp_paths=7.764792) I0421 15:07:28.615355 131222709732928 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0421 15:07:28.615490 131315320347776 async_checkpointer.py:561] Finished blocking save. Time taken: 7.849272s. Continuing background save to gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/9. I0421 15:07:28.615789 131315320347776 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0421 15:07:28.616106 131222760064576 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0421 15:07:28.616249 131315320347776 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776784021.487585, 'wait_for_prev_duration_secs': 19.277589559555054, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776784040.7661703, 'checkpointer_blocking_duration_secs': 7.849505662918091, 'get_old_steps_start_time': 1776784048.6156948, 'get_old_steps_duration_secs': 3.62396240234375e-05, 'checkpoint_manager_blocking_start_time': 1776784021.4875474, 'checkpoint_manager_blocking_duration_secs': 27.128668069839478} I0421 15:07:28.616411 131315320347776 checkpointing.py:408] Started an asynchronous checkpoint save for step 9 I0421 15:07:28.616451 131315320347776 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0421 15:07:29.347483 131222781036096 array_metadata_store.py:203] [process=0][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/9/items/array_metadatas/process_0 I0421 15:08:03.650440 131220899890752 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 35.037137s (commit=34.499063s, array_metadata_write=0.538074s) I0421 15:08:03.651647 131222709732928 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 295.229 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 42 seconds) (per-host) I0421 15:08:03.651710 131222709732928 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 35.036144s. I0421 15:08:04.052982 131222709732928 array_metadata_store.py:367] [process=0][thread=async_save] Skipped cross-host ArrayMetadata validation because only one process is found: process_index=0. I0421 15:08:04.485822 131222709732928 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389). I0421 15:08:04.486030 131222709732928 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.588916s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/9/items I0421 15:08:04.486841 131222709732928 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/9/items I0421 15:08:04.714742 131222709732928 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/9 I0421 15:08:05.414950 131222709732928 atomicity.py:794] [process=0][thread=async_save] Finished saving checkpoint (finalized tmp dir) to `gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/9`. I0421 15:08:05.415766 131222709732928 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 44.649578s. directory=gs://wanglance-maxtext/linen_ckpt_main_20260421_144657/linen_main_20260421_144657_07_eval/checkpoints/9 I0421 15:08:05.415856 131222709732928 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 36.800291s. I0421 15:08:05.416106 131222760064576 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0421 15:08:05.416229 131222760064576 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save. I0421 15:08:05.416300 131222760064576 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0421 15:08:05.416344 131222760064576 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0421 15:08:05.416825 131315320347776 checkpoint_manager.py:2006] [process=0][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9. I0421 15:08:05.416974 131315320347776 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0421 15:08:05.417882 131315320347776 metric_logger.py:196] completed step: 9, seconds: 0.118, TFLOP/s/device: 115.180, Tokens/s/device: 17361.229, total_weights: 12300, loss: 8.710, lm_loss: 8.710, perplexity: 6065.008 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops