2026-04-20 15:45:53.502733: 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) I0420 15:45:53.623849 135106450713728 max_utils.py:238] Skipping jax distributed system due to skip_jax_distributed_system=True flag. I0420 15:46:23.168401 135106450713728 max_utils.py:800] System Information: Jax Version: 0.9.2 I0420 15:46:23.168521 135106450713728 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0420 15:46:23.168556 135106450713728 max_utils.py:802] System Information: Jax Backend: PJRT C API TFRT TPU v6 lite Built on Apr 6 2026 20:48:10 (1775533690) cl/895581894 I0420 15:46:23.168582 135106450713728 train_utils.py:365] WARNING: 'dataset_path' might be pointing your local file system I0420 15:46:23.168675 135106450713728 train.py:806] [DECOUPLED NO-OP] skipping cloud diagnostics wrapper. I0420 15:46:23.687484 135106450713728 maxtext_utils.py:1718] Num_devices: 8, shape (1, 1, 1, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0420 15:46:24.136795 135106450713728 checkpointing.py:688] Setting up checkpoint logger... I0420 15:46:24.136905 135106450713728 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0420 15:46:24.136942 135106450713728 pytree_checkpoint_handler.py:577] save_device_host_concurrent_bytes=None I0420 15:46:24.137127 135106450713728 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 0x7ae055103290>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0420 15:46:26.563720 135106450713728 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0420 15:46:26.563903 135106450713728 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 0x7adb56d733b0>}, handler_registry=None I0420 15:46:26.564137 135106450713728 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7adb56d733b0>` 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`. I0420 15:46:26.564179 135106450713728 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7adb56d71a00>` 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`. I0420 15:46:26.564209 135106450713728 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 0x7adb56d733b0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7adb56d733b0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7adb56d71a00>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7adb56d71a00>}). I0420 15:46:26.564498 135106450713728 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.28 I0420 15:46:26.564550 135106450713728 async_checkpointer.py:177] [process=0][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>.<lambda> at 0x7ad9da1b2de0> timeout: 600 secs and primary_host=0 for async checkpoint writes I0420 15:46:26.689287 135106450713728 checkpoint_manager.py:1788] Found 0 checkpoint steps in gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints I0420 15:46:26.689508 135106450713728 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/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7adb56dc7710> I0420 15:46:26.689587 135106450713728 checkpointing.py:302] Checkpoint manager created! I0420 15:46:26.767386 135106450713728 dataset_info.py:707] Load dataset info from tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0 I0420 15:46:26.770307 135106450713728 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. I0420 15:46:26.823817 135106450713728 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 I0420 15:46:26.847630 135106450713728 tokenizer.py:245] Tokenizer path: src/maxtext/assets/tokenizers/tokenizer.llama2 I0420 15:46:26.847691 135106450713728 tokenizer.py:187] Loading sentencepiece tokenizer: src/maxtext/assets/tokenizers/tokenizer.llama2 I0420 15:46:27.511018 135106450713728 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0420 15:46:27.511206 135106450713728 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. W0420 15:46:27.626171 1128313 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. [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 I0420 15:46:27.846404 135106450713728 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[8,128,2048]........................................ ('activation_batch', 'activation_norm_length', 'activation_embed'). I0420 15:46:27.846492 135106450713728 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[8,128,2048]........................................ ('fsdp', None, None). I0420 15:46:27.851544 135106450713728 nnx_decoders.py:465] Unknown Logical: bfloat16[8,128,2048]........................................ ('activation_batch', 'activation_norm_length', 'activation_embed'). I0420 15:46:27.851590 135106450713728 nnx_decoders.py:465] Unknown Physical: bfloat16[8,128,2048]........................................ ('fsdp', None, None). I0420 15:46:27.866730 135106450713728 attentions.py:1088] attentions/inputs_q Logical: bfloat16[8,128,2048]........................................ ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0420 15:46:27.866785 135106450713728 attentions.py:1088] attentions/inputs_q Physical: bfloat16[8,128,2048]........................................ ('fsdp', None, None). I0420 15:46:27.881331 135106450713728 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[8,128,2048]........................................ ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0420 15:46:27.881383 135106450713728 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[8,128,2048]........................................ ('fsdp', None, None). I0420 15:46:27.903513 135106450713728 attentions.py:1154] attentions/query Logical: bfloat16[8,128,16,128]...................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0420 15:46:27.903571 135106450713728 attentions.py:1154] attentions/query Physical: bfloat16[8,128,16,128]...................................... ('fsdp', None, None, None). I0420 15:46:27.918154 135106450713728 attentions.py:1155] attentions/key Logical: bfloat16[8,128,16,128]...................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0420 15:46:27.918207 135106450713728 attentions.py:1155] attentions/key Physical: bfloat16[8,128,16,128]...................................... ('fsdp', None, None, None). I0420 15:46:27.932930 135106450713728 attentions.py:1156] attentions/value Logical: bfloat16[8,128,16,128]...................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0420 15:46:27.932982 135106450713728 attentions.py:1156] attentions/value Physical: bfloat16[8,128,16,128]...................................... ('fsdp', None, None, None). I0420 15:46:27.962605 135106450713728 attentions.py:1197] attentions/out Logical: bfloat16[8,128,16,128]...................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0420 15:46:27.962669 135106450713728 attentions.py:1197] attentions/out Physical: bfloat16[8,128,16,128]...................................... ('fsdp', None, None, None). I0420 15:46:27.986375 135106450713728 linears.py:525] linears/x Logical: bfloat16[8,128,7168]........................................ ('activation_batch', 'activation_length', 'activation_mlp'). I0420 15:46:27.986433 135106450713728 linears.py:525] linears/x Physical: bfloat16[8,128,7168]........................................ ('fsdp', None, None). I0420 15:46:32.099938 135106450713728 max_utils.py:791] Total memory size: 2.5 GB, Output size: 1.5 GB, Temp size: 1.0 GB, Argument size: 1.5 GB, Host temp size: 0.0 GB. I0420 15:46:32.100606 135106450713728 max_utils.py:194] tensorboardX not available; using no-op SummaryWriter. I0420 15:46:32.102180 135106450713728 metric_logger.py:301] number parameters: 1.104 billion I0420 15:46:39.214982 135106450713728 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0420 15:46:39.287457 135106450713728 checkpointing.py:798] Waited 0.07246851921081543 seconds for step 0 to finish before starting checkpointing. I0420 15:46:39.288008 135106450713728 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0420 15:46:39.288213 135106450713728 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 0 I0420 15:46:39.288709 135106450713728 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/0. I0420 15:46:39.384369 135106450713728 signaling_client.py:373] Using ThreadSafeKeyValueSignalingClient I0420 15:46:39.480518 134991530952256 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/0 I0420 15:46:39.492442 135106450713728 jax_array_handlers.py:347] Scheduling D2H of 69 prioritized jax.Array. I0420 15:46:39.492593 135106450713728 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 I0420 15:46:40.175908 134991520466496 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/0/items I0420 15:46:40.347996 134991491106368 checkpoint.py:188] Wrote Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776700000100659457, 'commit_timestamp_nsecs': None, 'custom_metadata': {}}, json={"item_handlers": null, "metrics": {}, "performance_metrics": {}, "init_timestamp_nsecs": 1776700000100659457, "commit_timestamp_nsecs": null, "custom_metadata": {}} to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/0/_CHECKPOINT_METADATA I0420 15:46:40.784405 1131487 google_auth_provider.cc:149] Using credentials at ~/.config/gcloud/application_default_credentials.json I0420 15:46:40.784470 1131487 google_auth_provider.cc:156] Using OAuth2 AuthProvider I0420 15:46:40.877300 135106450713728 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 1.385930s I0420 15:46:40.884173 135106450713728 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 8.238 GiB/s (total gbytes: 12.3 GiB) (time elapsed: a second) (per-host) I0420 15:46:40.884244 135106450713728 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 1.498127s (batch_requests_ready=0.097011s, total_serialization_initiated=1.394355s, others=0.006762s) I0420 15:46:40.884318 135106450713728 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 1.499378s (all_items=0.000026s, per_item={'items': '0.00002623'}, temp_paths=1.499352) I0420 15:46:40.885629 134991407220288 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0420 15:46:40.885719 135106450713728 async_checkpointer.py:561] Finished blocking save. Time taken: 1.597462s. Continuing background save to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/0. I0420 15:46:40.885924 135106450713728 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0420 15:46:40.886113 134991541438016 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0420 15:46:40.886208 135106450713728 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776699999.2879934, 'wait_for_prev_duration_secs': 4.267692565917969e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776699999.2882364, 'checkpointer_blocking_duration_secs': 1.5976035594940186, 'get_old_steps_start_time': 1776700000.8858588, 'get_old_steps_duration_secs': 3.0040740966796875e-05, 'checkpoint_manager_blocking_start_time': 1776699999.2878854, 'checkpoint_manager_blocking_duration_secs': 1.5982966423034668} I0420 15:46:40.886323 135106450713728 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0420 15:46:40.886380 135106450713728 max_utils.py:750] Memstats: After params initialized: I0420 15:46:40.886430 135106450713728 max_utils.py:756] Using (GB) 1.56 / 31.25 (4.992000%) on TPU_0(process=0,(0,0,0,0)) I0420 15:46:40.886454 135106450713728 max_utils.py:756] Using (GB) 1.56 / 31.25 (4.992000%) on TPU_1(process=0,(1,0,0,0)) I0420 15:46:40.886472 135106450713728 max_utils.py:756] Using (GB) 1.56 / 31.25 (4.992000%) on TPU_2(process=0,(0,1,0,0)) I0420 15:46:40.886491 135106450713728 max_utils.py:756] Using (GB) 1.56 / 31.25 (4.992000%) on TPU_3(process=0,(1,1,0,0)) I0420 15:46:40.886508 135106450713728 max_utils.py:756] Using (GB) 1.56 / 31.25 (4.992000%) on TPU_4(process=0,(0,2,0,0)) I0420 15:46:40.886525 135106450713728 max_utils.py:756] Using (GB) 1.56 / 31.25 (4.992000%) on TPU_5(process=0,(1,2,0,0)) I0420 15:46:40.886542 135106450713728 max_utils.py:756] Using (GB) 1.56 / 31.25 (4.992000%) on TPU_6(process=0,(0,3,0,0)) I0420 15:46:40.886558 135106450713728 max_utils.py:756] Using (GB) 1.56 / 31.25 (4.992000%) on TPU_7(process=0,(1,3,0,0)) I0420 15:46:41.334837 135106450713728 metric_logger.py:196] completed step: 0, seconds: 7.111, TFLOP/s/device: 0.113, Tokens/s/device: 18.000, total_weights: 963, loss: 10.836, lm_loss: 10.836, perplexity: 50825.188 I0420 15:46:41.335817 135106450713728 metric_logger.py:281] To see full metrics 'tensorboard --logdir=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/tensorboard/' I0420 15:46:41.392548 135106450713728 metric_logger.py:196] completed step: 1, seconds: 2.115, TFLOP/s/device: 0.379, Tokens/s/device: 60.511, total_weights: 945, loss: 10.847, lm_loss: 10.847, perplexity: 51361.996 I0420 15:46:41.455484 135106450713728 metric_logger.py:196] completed step: 2, seconds: 0.022, TFLOP/s/device: 35.760, Tokens/s/device: 5715.306, total_weights: 962, loss: 10.296, lm_loss: 10.296, perplexity: 29612.078 I0420 15:46:41.518528 135106450713728 metric_logger.py:196] completed step: 3, seconds: 0.050, TFLOP/s/device: 16.082, Tokens/s/device: 2570.230, total_weights: 975, loss: 9.778, lm_loss: 9.778, perplexity: 17632.605 I0420 15:46:41.667016 134991438677568 array_metadata_store.py:203] [process=0][thread=array_type_handler] Wrote 69 array_metadata.ArrayMetadata to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/0/items/array_metadatas/process_0 I0420 15:46:53.113696 135106450713728 metric_logger.py:196] completed step: 4, seconds: 0.064, TFLOP/s/device: 12.600, Tokens/s/device: 2013.845, total_weights: 962, loss: 9.422, lm_loss: 9.422, perplexity: 12361.302 I0420 15:46:53.128102 135106450713728 metric_logger.py:196] completed step: 5, seconds: 0.062, TFLOP/s/device: 12.828, Tokens/s/device: 2050.296, total_weights: 958, loss: 9.222, lm_loss: 9.222, perplexity: 10115.937 I0420 15:46:53.187595 135106450713728 metric_logger.py:196] completed step: 6, seconds: 11.597, TFLOP/s/device: 0.069, Tokens/s/device: 11.037, total_weights: 930, loss: 9.362, lm_loss: 9.362, perplexity: 11643.363 I0420 15:46:53.250551 135106450713728 metric_logger.py:196] completed step: 7, seconds: 0.009, TFLOP/s/device: 92.309, Tokens/s/device: 14753.343, total_weights: 935, loss: 9.333, lm_loss: 9.333, perplexity: 11301.732 I0420 15:46:53.313853 135106450713728 metric_logger.py:196] completed step: 8, seconds: 0.060, TFLOP/s/device: 13.297, Tokens/s/device: 2125.257, total_weights: 930, loss: 9.560, lm_loss: 9.560, perplexity: 14189.206 I0420 15:46:53.377714 135106450713728 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0420 15:46:53.378908 135106450713728 checkpointing.py:798] Waited 0.0012004375457763672 seconds for step 9 to finish before starting checkpointing. I0420 15:46:53.379281 135106450713728 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0420 15:47:14.567082 134991428191808 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 33.682105s (commit=33.224561s, array_metadata_write=0.457544s) I0420 15:47:14.568502 134991407220288 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 359.180 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 35 seconds) (per-host) I0420 15:47:14.568562 134991407220288 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 33.682794s. I0420 15:47:14.824026 134991407220288 checkpoint.py:228] Read Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776700000100659457, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} from gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/0/_CHECKPOINT_METADATA I0420 15:47:15.010035 134991407220288 array_metadata_store.py:367] [process=0][thread=async_save] Skipped cross-host ArrayMetadata validation because only one process is found: process_index=0. I0420 15:47:15.219249 134991491106368 checkpoint.py:247] Updated Metadata={'item_handlers': {'items': 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler'}, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776700000100659457, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/0/_CHECKPOINT_METADATA I0420 15:47:15.416997 134991407220288 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389). I0420 15:47:15.417216 134991407220288 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.555060s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/0/items I0420 15:47:15.417931 134991407220288 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/0/items I0420 15:47:15.657926 134991407220288 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/0 I0420 15:47:16.342002 134991407220288 atomicity.py:794] [process=0][thread=async_save] Finished saving checkpoint (finalized tmp dir) to `gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/0`. I0420 15:47:16.342737 134991407220288 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 37.054486s. directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/0 I0420 15:47:16.342830 134991407220288 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 35.457063s. I0420 15:47:16.342993 134991541438016 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0420 15:47:16.343123 134991541438016 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save. I0420 15:47:16.343180 134991541438016 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0420 15:47:16.343233 134991541438016 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0420 15:47:16.343345 135106450713728 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. W0420 15:47:16.343484 135106450713728 checkpoint_manager.py:1441] Waiting for previous save to complete took 22.964225 seconds. If this number is high, consider checkpointing less frequently. I0420 15:47:16.344521 135106450713728 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 9 I0420 15:47:16.344832 135106450713728 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/9. I0420 15:47:16.528562 134991541438016 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/9 I0420 15:47:16.538285 135106450713728 jax_array_handlers.py:347] Scheduling D2H of 69 prioritized jax.Array. I0420 15:47:16.538392 135106450713728 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 I0420 15:47:17.227022 134991396734528 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/9/items I0420 15:47:19.411790 135106450713728 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 2.874573s I0420 15:47:19.419130 135106450713728 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 4.141 GiB/s (total gbytes: 12.3 GiB) (time elapsed: 2 seconds) (per-host) I0420 15:47:19.419219 135106450713728 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 2.979903s (batch_requests_ready=0.089568s, total_serialization_initiated=2.883146s, others=0.007189s) I0420 15:47:19.419324 135106450713728 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 2.980507s (all_items=0.000016s, per_item={'items': '0.00001645'}, temp_paths=2.980491) I0420 15:47:19.421308 134991459649088 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0420 15:47:19.421448 135106450713728 async_checkpointer.py:561] Finished blocking save. Time taken: 3.076873s. Continuing background save to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/9. I0420 15:47:19.421712 135106450713728 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0420 15:47:19.421969 134991438677568 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0420 15:47:19.422265 135106450713728 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776700013.3792248, 'wait_for_prev_duration_secs': 22.964224815368652, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776700036.3445451, 'checkpointer_blocking_duration_secs': 3.077049970626831, 'get_old_steps_start_time': 1776700039.4216177, 'get_old_steps_duration_secs': 4.5299530029296875e-05, 'checkpoint_manager_blocking_start_time': 1776700013.3791819, 'checkpoint_manager_blocking_duration_secs': 26.043047666549683} I0420 15:47:19.422445 135106450713728 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0420 15:47:19.422487 135106450713728 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0420 15:47:20.177623 134991470134848 array_metadata_store.py:203] [process=0][thread=array_type_handler] Wrote 69 array_metadata.ArrayMetadata to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/9/items/array_metadatas/process_0 I0420 15:47:55.956328 134991428191808 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 36.536132s (commit=36.071562s, array_metadata_write=0.464571s) I0420 15:47:55.958591 134991459649088 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 319.763 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 39 seconds) (per-host) I0420 15:47:55.958763 134991459649088 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 36.537250s. I0420 15:47:56.377187 134991459649088 array_metadata_store.py:367] [process=0][thread=async_save] Skipped cross-host ArrayMetadata validation because only one process is found: process_index=0. I0420 15:47:56.823390 134991459649088 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389). I0420 15:47:56.824436 134991459649088 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.597233s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/9/items I0420 15:47:56.825299 134991459649088 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/9/items I0420 15:47:57.088131 134991459649088 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/9 I0420 15:47:57.771555 134991459649088 atomicity.py:794] [process=0][thread=async_save] Finished saving checkpoint (finalized tmp dir) to `gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/9`. I0420 15:47:57.772374 134991459649088 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 41.427813s. directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_03_dropout/checkpoints/9 I0420 15:47:57.772470 134991459649088 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 38.350967s. I0420 15:47:57.772709 134991438677568 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0420 15:47:57.772848 134991438677568 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save. I0420 15:47:57.772982 134991438677568 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0420 15:47:57.773040 134991438677568 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0420 15:47:57.773283 135106450713728 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. I0420 15:47:57.773525 135106450713728 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0420 15:47:57.774719 135106450713728 metric_logger.py:196] completed step: 9, seconds: 0.063, TFLOP/s/device: 12.723, Tokens/s/device: 2033.489, total_weights: 948, loss: 9.098, lm_loss: 9.098, perplexity: 8939.170 Per train step: Total TFLOPs: 0.80 split as 99.60% learnable weight flops and 0.40% attention flops