2026-04-16 05:31:11.261784: 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) I0416 05:31:11.376662 130824867855488 max_utils.py:238] Skipping jax distributed system due to skip_jax_distributed_system=True flag. I0416 05:32:06.307956 130824867855488 max_utils.py:800] System Information: Jax Version: 0.9.2 I0416 05:32:06.308176 130824867855488 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0416 05:32:06.308213 130824867855488 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 I0416 05:32:06.308244 130824867855488 train_utils.py:364] WARNING: 'dataset_path' might be pointing your local file system I0416 05:32:06.308338 130824867855488 train.py:818] [DECOUPLED NO-OP] skipping cloud diagnostics wrapper. I0416 05:32:06.822290 130824867855488 maxtext_utils.py:1687] Num_devices: 8, shape (1, 1, 1, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0416 05:32:06.921750 130824867855488 checkpointing.py:688] Setting up checkpoint logger... I0416 05:32:06.921854 130824867855488 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0416 05:32:06.921933 130824867855488 pytree_checkpoint_handler.py:577] save_device_host_concurrent_bytes=None I0416 05:32:06.922203 130824867855488 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 0x76fb737f8bc0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0416 05:32:09.255393 130824867855488 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0416 05:32:09.255630 130824867855488 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 0x76f4f3f18d40>}, handler_registry=None I0416 05:32:09.256007 130824867855488 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x76f4f3f18d40>` 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`. I0416 05:32:09.256064 130824867855488 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x76f4f3f1a780>` 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`. I0416 05:32:09.256098 130824867855488 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 0x76f4f3f18d40>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x76f4f3f18d40>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x76f4f3f1a780>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x76f4f3f1a780>}). I0416 05:32:09.256416 130824867855488 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.28 I0416 05:32:09.256472 130824867855488 async_checkpointer.py:177] [process=0][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>.<lambda> at 0x76f4f4789940> timeout: 600 secs and primary_host=0 for async checkpoint writes I0416 05:32:09.385463 130824867855488 checkpoint_manager.py:1788] Found 0 checkpoint steps in gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints I0416 05:32:09.385730 130824867855488 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_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x76f4f3f19d60> I0416 05:32:09.385829 130824867855488 checkpointing.py:302] Checkpoint manager created! I0416 05:32:09.463746 130824867855488 dataset_info.py:707] Load dataset info from tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0 I0416 05:32:09.466705 130824867855488 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. I0416 05:32:09.518965 130824867855488 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 I0416 05:32:09.549368 130824867855488 tokenizer.py:245] Tokenizer path: src/maxtext/assets/tokenizers/tokenizer.llama2 I0416 05:32:09.549438 130824867855488 tokenizer.py:187] Loading sentencepiece tokenizer: src/maxtext/assets/tokenizers/tokenizer.llama2 I0416 05:32:10.583243 130824867855488 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0416 05:32:10.583362 130824867855488 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. W0416 05:32:10.690475 3747202 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 I0416 05:32:10.901283 130824867855488 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0416 05:32:10.901370 130824867855488 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0416 05:32:10.911014 130824867855488 nnx_decoders.py:465] Unknown Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0416 05:32:10.911164 130824867855488 nnx_decoders.py:465] Unknown Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0416 05:32:10.929024 130824867855488 attentions.py:1088] attentions/inputs_q Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0416 05:32:10.929087 130824867855488 attentions.py:1088] attentions/inputs_q Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0416 05:32:10.943704 130824867855488 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0416 05:32:10.943753 130824867855488 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0416 05:32:10.966107 130824867855488 attentions.py:1154] attentions/query Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0416 05:32:10.966166 130824867855488 attentions.py:1154] attentions/query Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 05:32:10.980778 130824867855488 attentions.py:1155] attentions/key Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0416 05:32:10.980828 130824867855488 attentions.py:1155] attentions/key Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 05:32:10.995465 130824867855488 attentions.py:1156] attentions/value Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0416 05:32:10.995515 130824867855488 attentions.py:1156] attentions/value Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 05:32:11.024312 130824867855488 attentions.py:1197] attentions/out Logical: bfloat16[8,2048,16,128]..................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0416 05:32:11.024378 130824867855488 attentions.py:1197] attentions/out Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 05:32:11.042635 130824867855488 linears.py:525] linears/x Logical: bfloat16[8,2048,7168]....................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0416 05:32:11.042687 130824867855488 linears.py:525] linears/x Physical: bfloat16[8,2048,7168]....................................... ('fsdp', None, None). I0416 05:32:18.865784 130824867855488 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. I0416 05:32:18.866463 130824867855488 max_utils.py:194] tensorboardX not available; using no-op SummaryWriter. I0416 05:32:18.868156 130824867855488 metric_logger.py:289] number parameters: 1.104 billion I0416 05:32:29.310129 130824867855488 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0416 05:32:29.439306 130824867855488 checkpointing.py:798] Waited 0.1291666030883789 seconds for step 0 to finish before starting checkpointing. I0416 05:32:29.439885 130824867855488 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0416 05:32:29.440097 130824867855488 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 0 I0416 05:32:29.440649 130824867855488 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/0. I0416 05:32:29.526060 130824867855488 signaling_client.py:373] Using ThreadSafeKeyValueSignalingClient I0416 05:32:29.617411 130824867855488 jax_array_handlers.py:347] Scheduling D2H of 69 prioritized jax.Array. I0416 05:32:29.617508 130824867855488 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 I0416 05:32:29.624478 130710750889536 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/0 I0416 05:32:30.320302 130710740403776 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/0/items I0416 05:32:30.457132 130710700557888 checkpoint.py:188] Wrote Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776317550213313808, 'commit_timestamp_nsecs': None, 'custom_metadata': {}}, json={"item_handlers": null, "metrics": {}, "performance_metrics": {}, "init_timestamp_nsecs": 1776317550213313808, "commit_timestamp_nsecs": null, "custom_metadata": {}} to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/0/_CHECKPOINT_METADATA I0416 05:32:30.898146 130824867855488 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 1.281779s I0416 05:32:30.898817 130824867855488 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 8.998 GiB/s (total gbytes: 12.3 GiB) (time elapsed: a second) (per-host) I0416 05:32:30.898875 130824867855488 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 1.371538s (batch_requests_ready=0.080072s, total_serialization_initiated=1.291037s, others=0.000429s) I0416 05:32:30.898944 130824867855488 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 1.372384s (all_items=0.000028s, per_item={'items': '0.00002789'}, temp_paths=1.372356) I0416 05:32:30.902172 3750289 google_auth_provider.cc:149] Using credentials at ~/.config/gcloud/application_default_credentials.json I0416 05:32:30.902228 3750289 google_auth_provider.cc:156] Using OAuth2 AuthProvider I0416 05:32:30.906669 130710761375296 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0416 05:32:30.906861 130824867855488 async_checkpointer.py:561] Finished blocking save. Time taken: 1.466716s. Continuing background save to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/0. I0416 05:32:30.907015 130824867855488 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0416 05:32:30.907209 130710606186048 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0416 05:32:30.907299 130824867855488 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776317549.4398677, 'wait_for_prev_duration_secs': 6.699562072753906e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776317549.4401224, 'checkpointer_blocking_duration_secs': 1.4668021202087402, 'get_old_steps_start_time': 1776317550.9069452, 'get_old_steps_duration_secs': 3.170967102050781e-05, 'checkpoint_manager_blocking_start_time': 1776317549.4397335, 'checkpoint_manager_blocking_duration_secs': 1.467540979385376} I0416 05:32:30.907488 130824867855488 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0416 05:32:30.907555 130824867855488 max_utils.py:750] Memstats: After params initialized: I0416 05:32:30.907601 130824867855488 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_0(process=0,(0,0,0,0)) I0416 05:32:30.907632 130824867855488 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_1(process=0,(1,0,0,0)) I0416 05:32:30.907654 130824867855488 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_2(process=0,(0,1,0,0)) I0416 05:32:30.907674 130824867855488 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_3(process=0,(1,1,0,0)) I0416 05:32:30.907692 130824867855488 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_4(process=0,(0,2,0,0)) I0416 05:32:30.907709 130824867855488 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_5(process=0,(1,2,0,0)) I0416 05:32:30.907726 130824867855488 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_6(process=0,(0,3,0,0)) I0416 05:32:30.907743 130824867855488 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_7(process=0,(1,3,0,0)) I0416 05:32:31.381940 130824867855488 metric_logger.py:185] completed step: 0, seconds: 10.440, TFLOP/s/device: 1.301, Tokens/s/device: 196.160, total_weights: 13328, loss: 10.880 I0416 05:32:31.382771 130824867855488 metric_logger.py:269] To see full metrics 'tensorboard --logdir=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/tensorboard/' I0416 05:32:31.493525 130824867855488 metric_logger.py:185] completed step: 1, seconds: 2.067, TFLOP/s/device: 6.573, Tokens/s/device: 990.786, total_weights: 12332, loss: 10.862 I0416 05:32:31.611257 130824867855488 metric_logger.py:185] completed step: 2, seconds: 0.022, TFLOP/s/device: 616.029, Tokens/s/device: 92854.552, total_weights: 15161, loss: 9.926 I0416 05:32:31.719795 130710648129088 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_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/0/items/array_metadatas/process_0 I0416 05:32:31.728797 130824867855488 metric_logger.py:185] completed step: 3, seconds: 0.104, TFLOP/s/device: 130.383, Tokens/s/device: 19652.813, total_weights: 13327, loss: 9.396 I0416 05:32:51.581252 130824867855488 metric_logger.py:185] completed step: 4, seconds: 0.118, TFLOP/s/device: 115.154, Tokens/s/device: 17357.256, total_weights: 11939, loss: 9.005 I0416 05:32:51.596183 130824867855488 metric_logger.py:185] completed step: 5, seconds: 0.117, TFLOP/s/device: 116.265, Tokens/s/device: 17524.794, total_weights: 15502, loss: 8.861 I0416 05:32:51.710184 130824867855488 metric_logger.py:185] completed step: 6, seconds: 19.856, TFLOP/s/device: 0.684, Tokens/s/device: 103.145, total_weights: 13864, loss: 8.738 I0416 05:32:51.827466 130824867855488 metric_logger.py:185] completed step: 7, seconds: 0.009, TFLOP/s/device: 1447.904, Tokens/s/device: 218243.819, total_weights: 12988, loss: 8.651 I0416 05:32:51.944851 130824867855488 metric_logger.py:185] completed step: 8, seconds: 0.115, TFLOP/s/device: 118.401, Tokens/s/device: 17846.717, total_weights: 13820, loss: 8.671 I0416 05:32:52.062887 130824867855488 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0416 05:32:52.064199 130824867855488 checkpointing.py:798] Waited 0.0013260841369628906 seconds for step 9 to finish before starting checkpointing. I0416 05:32:52.064504 130824867855488 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0416 05:32:57.819924 130710637643328 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 26.914886s (commit=26.513296s, array_metadata_write=0.401590s) I0416 05:32:57.821248 130710761375296 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 446.627 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 28 seconds) (per-host) I0416 05:32:57.821365 130710761375296 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 26.914557s. I0416 05:32:58.047729 130710761375296 checkpoint.py:228] Read Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776317550213313808, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} from gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/0/_CHECKPOINT_METADATA I0416 05:32:58.215928 130710761375296 array_metadata_store.py:367] [process=0][thread=async_save] Skipped cross-host ArrayMetadata validation because only one process is found: process_index=0. I0416 05:32:58.411133 130710700557888 checkpoint.py:247] Updated Metadata={'item_handlers': {'items': 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler'}, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776317550213313808, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/0/_CHECKPOINT_METADATA I0416 05:32:58.628233 130710761375296 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389). I0416 05:32:58.628939 130710761375296 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.538707s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/0/items I0416 05:32:58.629641 130710761375296 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/0/items I0416 05:32:58.870352 130710761375296 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/0 I0416 05:32:59.515390 130710761375296 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_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/0`. I0416 05:32:59.516031 130710761375296 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 30.075890s. directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/0 I0416 05:32:59.516125 130710761375296 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 28.609324s. I0416 05:32:59.516842 130710606186048 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0416 05:32:59.516895 130710606186048 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save. I0416 05:32:59.516951 130710606186048 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0416 05:32:59.517000 130710606186048 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0416 05:32:59.517142 130824867855488 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. W0416 05:32:59.517270 130824867855488 checkpoint_manager.py:1441] Waiting for previous save to complete took 7.452792 seconds. If this number is high, consider checkpointing less frequently. I0416 05:32:59.518380 130824867855488 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 9 I0416 05:32:59.518700 130824867855488 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/9. I0416 05:32:59.676579 130710606186048 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/9 I0416 05:32:59.701977 130824867855488 jax_array_handlers.py:347] Scheduling D2H of 69 prioritized jax.Array. I0416 05:32:59.702092 130824867855488 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 I0416 05:33:00.354959 130710637643328 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/9/items I0416 05:33:06.518032 130824867855488 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 6.817098s I0416 05:33:06.518564 130824867855488 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 1.786 GiB/s (total gbytes: 12.3 GiB) (time elapsed: 6 seconds) (per-host) I0416 05:33:06.518623 130824867855488 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 6.909460s (batch_requests_ready=0.083956s, total_serialization_initiated=6.825092s, others=0.000412s) I0416 05:33:06.518697 130824867855488 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 6.910031s (all_items=0.000023s, per_item={'items': '0.00002265'}, temp_paths=6.910008) I0416 05:33:06.525638 130710669100608 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0416 05:33:06.525739 130824867855488 async_checkpointer.py:561] Finished blocking save. Time taken: 7.007314s. Continuing background save to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/9. I0416 05:33:06.525952 130824867855488 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0416 05:33:06.526111 130710761375296 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0416 05:33:06.526182 130824867855488 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776317572.0644462, 'wait_for_prev_duration_secs': 7.452792167663574, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776317579.518404, 'checkpointer_blocking_duration_secs': 7.0074462890625, 'get_old_steps_start_time': 1776317586.5258722, 'get_old_steps_duration_secs': 3.910064697265625e-05, 'checkpoint_manager_blocking_start_time': 1776317572.064393, 'checkpoint_manager_blocking_duration_secs': 14.461765050888062} I0416 05:33:06.526303 130824867855488 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0416 05:33:06.526335 130824867855488 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0416 05:33:07.275134 130710679586368 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_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/9/items/array_metadatas/process_0 I0416 05:33:36.726648 130710637643328 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 30.201766s (commit=29.768704s, array_metadata_write=0.433062s) I0416 05:33:36.727891 130710669100608 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 340.443 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 37 seconds) (per-host) I0416 05:33:36.728009 130710669100608 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 30.202224s. I0416 05:33:37.143448 130710669100608 array_metadata_store.py:367] [process=0][thread=async_save] Skipped cross-host ArrayMetadata validation because only one process is found: process_index=0. I0416 05:33:37.561019 130710669100608 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389). I0416 05:33:37.561238 130710669100608 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.561826s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/9/items I0416 05:33:37.561864 130710669100608 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/9/items I0416 05:33:37.789894 130710669100608 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/9 I0416 05:33:38.462838 130710669100608 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_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/9`. I0416 05:33:38.463480 130710669100608 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 38.945062s. directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_10_shardy_false/checkpoints/9 I0416 05:33:38.463553 130710669100608 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 31.937770s. I0416 05:33:38.463671 130710761375296 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0416 05:33:38.463723 130710761375296 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save. I0416 05:33:38.463787 130710761375296 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0416 05:33:38.463827 130710761375296 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0416 05:33:38.463974 130824867855488 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. I0416 05:33:38.464181 130824867855488 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0416 05:33:38.465036 130824867855488 metric_logger.py:185] completed step: 9, seconds: 0.118, TFLOP/s/device: 115.634, Tokens/s/device: 17429.639, total_weights: 12300, loss: 8.668 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops