2026-04-16 02:17:15.514664: 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 02:17:15.633298 134413266533504 max_utils.py:238] Skipping jax distributed system due to skip_jax_distributed_system=True flag. I0416 02:17:48.561499 134413266533504 max_utils.py:800] System Information: Jax Version: 0.9.2 I0416 02:17:48.561620 134413266533504 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0416 02:17:48.561656 134413266533504 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 02:17:48.561687 134413266533504 train_utils.py:364] WARNING: 'dataset_path' might be pointing your local file system I0416 02:17:48.561710 134413266533504 train_utils.py:377] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0416 02:17:48.561787 134413266533504 train.py:812] [DECOUPLED NO-OP] skipping cloud diagnostics wrapper. W0416 02:17:48.654410 3540053 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 02:17:49.062636 134413266533504 maxtext_utils.py:1687] Num_devices: 8, shape (1, 1, 1, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0416 02:17:49.159914 134413266533504 checkpointing.py:688] Setting up checkpoint logger... I0416 02:17:49.160023 134413266533504 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0416 02:17:49.160089 134413266533504 pytree_checkpoint_handler.py:577] save_device_host_concurrent_bytes=None I0416 02:17:49.160285 134413266533504 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 0x7a3ef0bfce90>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0416 02:17:51.547810 134413266533504 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0416 02:17:51.548012 134413266533504 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 0x7a38733acf80>}, handler_registry=None I0416 02:17:51.548322 134413266533504 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7a38733acf80>` 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 02:17:51.548364 134413266533504 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7a38733af350>` 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 02:17:51.548394 134413266533504 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 0x7a38733acf80>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7a38733acf80>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7a38733af350>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7a38733af350>}). I0416 02:17:51.548809 134413266533504 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.28 I0416 02:17:51.548863 134413266533504 async_checkpointer.py:177] [process=0][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>.<lambda> at 0x7a387438d940> timeout: 600 secs and primary_host=0 for async checkpoint writes I0416 02:17:51.673207 134413266533504 checkpoint_manager.py:1788] Found 0 checkpoint steps in gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints I0416 02:17:51.673452 134413266533504 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_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7a38733ae090> I0416 02:17:51.673537 134413266533504 checkpointing.py:302] Checkpoint manager created! I0416 02:17:52.575515 134413266533504 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0416 02:17:52.575744 134413266533504 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. W0416 02:17:52.686888 3540053 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 02:17:52.875146 134413266533504 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[2048]............................................... Unknown. I0416 02:17:52.875242 134413266533504 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[2048]............................................... (None,). I0416 02:17:52.888454 134413266533504 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[2048,16,7168]....................................... Unknown. I0416 02:17:52.888505 134413266533504 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[2048,16,7168]....................................... ('fsdp', None, None). I0416 02:17:52.914599 134413266533504 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[7168,16,2048]....................................... Unknown. I0416 02:17:52.914659 134413266533504 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[7168,16,2048]....................................... (None, None, 'fsdp'). I0416 02:17:52.927684 134413266533504 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[2048,16]............................................ Unknown. I0416 02:17:52.927734 134413266533504 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[2048,16]............................................ (None, None). I0416 02:17:52.953761 134413266533504 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[2048,16,16,128]..................................... Unknown. I0416 02:17:52.953821 134413266533504 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[2048,16,16,128]..................................... ('fsdp', None, None, None). I0416 02:17:52.966948 134413266533504 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[16,16,128,2048]..................................... Unknown. I0416 02:17:52.967000 134413266533504 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[16,16,128,2048]..................................... (None, None, None, 'fsdp'). I0416 02:17:53.006097 134413266533504 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[2048,32000]......................................... Unknown. I0416 02:17:53.006178 134413266533504 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[2048,32000]......................................... ('fsdp', None). I0416 02:17:53.019323 134413266533504 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[32000,2048]......................................... Unknown. I0416 02:17:53.019370 134413266533504 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[32000,2048]......................................... (None, 'fsdp'). I0416 02:17:53.214684 134413266533504 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0416 02:17:53.214831 134413266533504 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0416 02:17:53.221976 134413266533504 nnx_decoders.py:465] Unknown Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0416 02:17:53.222078 134413266533504 nnx_decoders.py:465] Unknown Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0416 02:17:53.237103 134413266533504 attentions.py:1088] attentions/inputs_q Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0416 02:17:53.237227 134413266533504 attentions.py:1088] attentions/inputs_q Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0416 02:17:53.251493 134413266533504 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0416 02:17:53.251609 134413266533504 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0416 02:17:53.279316 134413266533504 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 02:17:53.279450 134413266533504 attentions.py:1154] attentions/query Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 02:17:53.293851 134413266533504 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 02:17:53.293974 134413266533504 attentions.py:1155] attentions/key Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 02:17:53.308225 134413266533504 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 02:17:53.308350 134413266533504 attentions.py:1156] attentions/value Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 02:17:53.333668 134413266533504 attentions.py:1197] attentions/out Logical: bfloat16[8,2048,16,128]..................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0416 02:17:53.333811 134413266533504 attentions.py:1197] attentions/out Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 02:17:53.353234 134413266533504 linears.py:525] linears/x Logical: bfloat16[8,2048,7168]....................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0416 02:17:53.353329 134413266533504 linears.py:525] linears/x Physical: bfloat16[8,2048,7168]....................................... ('fsdp', None, None). I0416 02:18:02.246360 134413266533504 max_utils.py:791] Total memory size: 4.5 GB, Output size: 1.5 GB, Temp size: 2.9 GB, Argument size: 1.5 GB, Host temp size: 0.0 GB. I0416 02:18:02.247091 134413266533504 max_utils.py:194] tensorboardX not available; using no-op SummaryWriter. I0416 02:18:02.248792 134413266533504 metric_logger.py:289] number parameters: 1.104 billion W0416 02:18:03.447554 3540053 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 02:18:03.567757 134413266533504 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0416 02:18:03.994863 134413266533504 checkpointing.py:798] Waited 0.42708802223205566 seconds for step 0 to finish before starting checkpointing. I0416 02:18:03.995336 134413266533504 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0416 02:18:03.995487 134413266533504 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 0 I0416 02:18:03.995888 134413266533504 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/0. I0416 02:18:04.081591 134413266533504 signaling_client.py:373] Using ThreadSafeKeyValueSignalingClient I0416 02:18:04.176139 134305632224832 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/0 I0416 02:18:04.187112 134413266533504 jax_array_handlers.py:347] Scheduling D2H of 69 prioritized jax.Array. I0416 02:18:04.187213 134413266533504 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 02:18:04.873477 134305621739072 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/0/items W0416 02:18:04.948677 3540053 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 02:18:04.969353 3540053 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 02:18:04.982642 3540053 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 02:18:04.992378 3540053 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 02:18:04.998120 3540053 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 02:18:05.003284 3540053 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 02:18:05.009230 134305586087488 checkpoint.py:188] Wrote Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776305884778170332, 'commit_timestamp_nsecs': None, 'custom_metadata': {}}, json={"item_handlers": null, "metrics": {}, "performance_metrics": {}, "init_timestamp_nsecs": 1776305884778170332, "commit_timestamp_nsecs": null, "custom_metadata": {}} to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/0/_CHECKPOINT_METADATA W0416 02:18:05.009586 3540053 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 02:18:05.015078 3540053 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 02:18:05.444672 3542303 google_auth_provider.cc:149] Using credentials at ~/.config/gcloud/application_default_credentials.json I0416 02:18:05.444750 3542303 google_auth_provider.cc:156] Using OAuth2 AuthProvider I0416 02:18:06.643605 134413266533504 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 2.457603s I0416 02:18:06.644312 134413266533504 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 4.819 GiB/s (total gbytes: 12.3 GiB) (time elapsed: 2 seconds) (per-host) I0416 02:18:06.644367 134413266533504 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 2.561073s (batch_requests_ready=0.094791s, total_serialization_initiated=2.465711s, others=0.000571s) I0416 02:18:06.644437 134413266533504 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 2.562009s (all_items=0.000020s, per_item={'items': '0.00002027'}, temp_paths=2.561989) I0416 02:18:06.651875 134305642710592 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0416 02:18:06.651984 134413266533504 async_checkpointer.py:561] Finished blocking save. Time taken: 2.656457s. Continuing background save to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/0. I0416 02:18:06.652200 134413266533504 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0416 02:18:06.652397 134305523172928 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0416 02:18:06.652509 134413266533504 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776305883.9953232, 'wait_for_prev_duration_secs': 3.981590270996094e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776305883.995508, 'checkpointer_blocking_duration_secs': 2.656616687774658, 'get_old_steps_start_time': 1776305886.6521423, 'get_old_steps_duration_secs': 2.3603439331054688e-05, 'checkpoint_manager_blocking_start_time': 1776305883.9952376, 'checkpoint_manager_blocking_duration_secs': 2.657244920730591} I0416 02:18:06.652702 134413266533504 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0416 02:18:06.652763 134413266533504 max_utils.py:750] Memstats: After params initialized: I0416 02:18:06.652812 134413266533504 max_utils.py:756] Using (GB) 1.6 / 31.25 (5.120000%) on TPU_0(process=0,(0,0,0,0)) I0416 02:18:06.652837 134413266533504 max_utils.py:756] Using (GB) 1.6 / 31.25 (5.120000%) on TPU_1(process=0,(1,0,0,0)) I0416 02:18:06.652856 134413266533504 max_utils.py:756] Using (GB) 1.6 / 31.25 (5.120000%) on TPU_2(process=0,(0,1,0,0)) I0416 02:18:06.652874 134413266533504 max_utils.py:756] Using (GB) 1.6 / 31.25 (5.120000%) on TPU_3(process=0,(1,1,0,0)) I0416 02:18:06.652891 134413266533504 max_utils.py:756] Using (GB) 1.6 / 31.25 (5.120000%) on TPU_4(process=0,(0,2,0,0)) I0416 02:18:06.652907 134413266533504 max_utils.py:756] Using (GB) 1.6 / 31.25 (5.120000%) on TPU_5(process=0,(1,2,0,0)) I0416 02:18:06.652923 134413266533504 max_utils.py:756] Using (GB) 1.6 / 31.25 (5.120000%) on TPU_6(process=0,(0,3,0,0)) I0416 02:18:06.652940 134413266533504 max_utils.py:756] Using (GB) 1.6 / 31.25 (5.120000%) on TPU_7(process=0,(1,3,0,0)) W0416 02:18:06.659359 3540053 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 02:18:06.666355 3540053 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 02:18:06.671511 3540053 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 02:18:07.042542 134413266533504 metric_logger.py:185] completed step: 0, seconds: 1.317, TFLOP/s/device: 41.253, Tokens/s/device: 6218.087, total_weights: 65536, loss: 10.880 I0416 02:18:07.043558 134413266533504 metric_logger.py:269] To see full metrics 'tensorboard --logdir=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/tensorboard/' I0416 02:18:07.376245 134305600767552 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_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/0/items/array_metadatas/process_0 I0416 02:18:07.463848 134413266533504 metric_logger.py:185] completed step: 1, seconds: 3.469, TFLOP/s/device: 15.666, Tokens/s/device: 2361.364, total_weights: 65536, loss: 10.880 I0416 02:18:07.899106 134413266533504 metric_logger.py:185] completed step: 2, seconds: 0.021, TFLOP/s/device: 2628.071, Tokens/s/device: 396131.528, total_weights: 65536, loss: 10.270 I0416 02:18:08.331806 134413266533504 metric_logger.py:185] completed step: 3, seconds: 0.414, TFLOP/s/device: 131.325, Tokens/s/device: 19794.707, total_weights: 65536, loss: 9.741 I0416 02:18:37.235869 134305533658688 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 30.584833s (commit=30.163145s, array_metadata_write=0.421688s) I0416 02:18:37.237479 134305642710592 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 381.153 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 33 seconds) (per-host) I0416 02:18:37.237611 134305642710592 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 30.585580s. I0416 02:18:37.480295 134305642710592 checkpoint.py:228] Read Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776305884778170332, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} from gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/0/_CHECKPOINT_METADATA I0416 02:18:37.649813 134305642710592 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 02:18:37.868971 134305586087488 checkpoint.py:247] Updated Metadata={'item_handlers': {'items': 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler'}, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776305884778170332, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/0/_CHECKPOINT_METADATA I0416 02:18:38.056766 134305642710592 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389). I0416 02:18:38.057470 134305642710592 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.541924s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/0/items I0416 02:18:38.058269 134305642710592 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/0/items I0416 02:18:38.293754 134305642710592 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/0 I0416 02:18:38.965111 134305642710592 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_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/0`. I0416 02:18:38.965863 134305642710592 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 34.970344s. directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/0 I0416 02:18:38.965942 134305642710592 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 32.313914s. I0416 02:18:38.966181 134305523172928 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0416 02:18:38.966305 134305523172928 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save. I0416 02:18:38.966380 134305523172928 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0416 02:18:38.966434 134305523172928 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0416 02:18:46.148474 134413266533504 metric_logger.py:185] completed step: 4, seconds: 0.443, TFLOP/s/device: 122.645, Tokens/s/device: 18486.424, total_weights: 65536, loss: 9.284 I0416 02:18:46.158533 134413266533504 metric_logger.py:185] completed step: 5, seconds: 0.449, TFLOP/s/device: 121.160, Tokens/s/device: 18262.560, total_weights: 65536, loss: 8.897 I0416 02:18:46.583409 134413266533504 metric_logger.py:185] completed step: 6, seconds: 37.794, TFLOP/s/device: 1.438, Tokens/s/device: 216.757, total_weights: 65536, loss: 8.598 I0416 02:18:47.017338 134413266533504 metric_logger.py:185] completed step: 7, seconds: 0.007, TFLOP/s/device: 7816.556, Tokens/s/device: 1178196.462, total_weights: 65536, loss: 8.390 I0416 02:18:47.435984 134413266533504 metric_logger.py:185] completed step: 8, seconds: 0.427, TFLOP/s/device: 127.423, Tokens/s/device: 19206.647, total_weights: 65536, loss: 8.261 I0416 02:18:47.849629 134413266533504 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0416 02:18:47.850798 134413266533504 checkpointing.py:798] Waited 0.001190185546875 seconds for step 9 to finish before starting checkpointing. I0416 02:18:47.851068 134413266533504 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0416 02:18:47.851233 134413266533504 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 9 I0416 02:18:47.851531 134413266533504 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/9. I0416 02:18:48.016667 134305523172928 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/9 I0416 02:18:48.040580 134413266533504 jax_array_handlers.py:347] Scheduling D2H of 69 prioritized jax.Array. I0416 02:18:48.040688 134413266533504 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 02:18:48.742352 134305533658688 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/9/items I0416 02:18:52.733397 134413266533504 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 4.694024s I0416 02:18:52.739869 134413266533504 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 2.570 GiB/s (total gbytes: 12.3 GiB) (time elapsed: 4 seconds) (per-host) I0416 02:18:52.739930 134413266533504 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 4.801247s (batch_requests_ready=0.093271s, total_serialization_initiated=4.701645s, others=0.006331s) I0416 02:18:52.740033 134413266533504 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 4.803257s (all_items=0.000020s, per_item={'items': '0.00001955'}, temp_paths=4.803238) I0416 02:18:52.741667 134305523172928 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0416 02:18:52.741754 134413266533504 async_checkpointer.py:561] Finished blocking save. Time taken: 4.890483s. Continuing background save to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/9. I0416 02:18:52.741958 134413266533504 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0416 02:18:52.742168 134305642710592 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0416 02:18:52.742293 134413266533504 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776305927.8510208, 'wait_for_prev_duration_secs': 7.510185241699219e-05, 'time_between_consecutive_saves_sec': 8.884571075439453, 'checkpointer_blocking_start_time': 1776305927.8512542, 'checkpointer_blocking_duration_secs': 4.890613555908203, 'get_old_steps_start_time': 1776305932.7418857, 'get_old_steps_duration_secs': 3.0517578125e-05, 'checkpoint_manager_blocking_start_time': 1776305927.8509872, 'checkpoint_manager_blocking_duration_secs': 4.891278266906738} I0416 02:18:52.742442 134413266533504 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0416 02:18:52.742476 134413266533504 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0416 02:18:53.451403 134311523124800 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_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/9/items/array_metadatas/process_0 I0416 02:19:28.249444 134305533658688 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 35.508733s (commit=35.075661s, array_metadata_write=0.433071s) I0416 02:19:28.250622 134305523172928 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 313.475 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 40 seconds) (per-host) I0416 02:19:28.250683 134305523172928 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 35.508879s. I0416 02:19:28.693568 134305523172928 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 02:19:29.108700 134305523172928 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389). I0416 02:19:29.109441 134305523172928 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.559744s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/9/items I0416 02:19:29.110208 134305523172928 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/9/items I0416 02:19:29.349173 134305523172928 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/9 I0416 02:19:30.000335 134305523172928 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_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/9`. I0416 02:19:30.000960 134305523172928 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 42.149691s. directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_004836/nnx_feat_nnx_trainstate_and_training_loop_20260416_004836_06_grad_accum/checkpoints/9 I0416 02:19:30.001057 134305523172928 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 37.259237s. I0416 02:19:30.001258 134305642710592 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0416 02:19:30.001380 134305642710592 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save. I0416 02:19:30.001464 134305642710592 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0416 02:19:30.001514 134305642710592 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0416 02:19:30.001701 134413266533504 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 02:19:30.001876 134413266533504 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0416 02:19:30.002555 134413266533504 metric_logger.py:185] completed step: 9, seconds: 0.433, TFLOP/s/device: 125.488, Tokens/s/device: 18914.975, total_weights: 65536, loss: 8.185 Per train step: Total TFLOPs: 54.35 split as 93.93% learnable weight flops and 6.07% attention flops