2026-04-20 15:56:45.665233: 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 15:56:45.785279 128959704521856 max_utils.py:238] Skipping jax distributed system due to skip_jax_distributed_system=True flag. I0420 15:57:12.938694 128959704521856 max_utils.py:800] System Information: Jax Version: 0.9.2 I0420 15:57:12.938817 128959704521856 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0420 15:57:12.938855 128959704521856 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 15:57:12.938881 128959704521856 train_utils.py:365] WARNING: 'dataset_path' might be pointing your local file system I0420 15:57:12.938976 128959704521856 train.py:806] [DECOUPLED NO-OP] skipping cloud diagnostics wrapper. I0420 15:57:13.464895 128959704521856 maxtext_utils.py:1718] Num_devices: 8, shape (1, 1, 1, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0420 15:57:13.908984 128959704521856 checkpointing.py:688] Setting up checkpoint logger... I0420 15:57:13.909107 128959704521856 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0420 15:57:13.909144 128959704521856 pytree_checkpoint_handler.py:577] save_device_host_concurrent_bytes=None I0420 15:57:13.909318 128959704521856 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 0x75492e7f8e30>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0420 15:57:16.276339 128959704521856 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0420 15:57:16.276530 128959704521856 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 0x754382991220>}, handler_registry=None I0420 15:57:16.276762 128959704521856 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x754382991220>` 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 15:57:16.276802 128959704521856 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7542b25bacc0>` 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 15:57:16.276830 128959704521856 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 0x754382991220>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x754382991220>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7542b25bacc0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7542b25bacc0>}). I0420 15:57:16.277149 128959704521856 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.28 I0420 15:57:16.277200 128959704521856 async_checkpointer.py:177] [process=0][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>.<lambda> at 0x7542b294d6c0> timeout: 600 secs and primary_host=0 for async checkpoint writes I0420 15:57:16.406931 128959704521856 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_07_eval/checkpoints I0420 15:57:16.407179 128959704521856 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_07_eval/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7542b25ba7b0> I0420 15:57:16.407261 128959704521856 checkpointing.py:302] Checkpoint manager created! I0420 15:57:16.483144 128959704521856 dataset_info.py:707] Load dataset info from tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0 I0420 15:57:16.486487 128959704521856 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 15:57:16.539679 128959704521856 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 15:57:16.563448 128959704521856 tokenizer.py:245] Tokenizer path: src/maxtext/assets/tokenizers/tokenizer.llama2 I0420 15:57:16.563509 128959704521856 tokenizer.py:187] Loading sentencepiece tokenizer: src/maxtext/assets/tokenizers/tokenizer.llama2 I0420 15:57:17.107161 128959704521856 dataset_info.py:707] Load dataset info from tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0 I0420 15:57:17.108797 128959704521856 reader.py:262] Creating a tf.data.Dataset reading 2 files located in folders: tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0. I0420 15:57:17.124972 128959704521856 logging_logger.py:49] Constructing tf.data.Dataset __local_c4_builder for split validation, from tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0 I0420 15:57:17.127564 128959704521856 tokenizer.py:245] Tokenizer path: src/maxtext/assets/tokenizers/tokenizer.llama2 I0420 15:57:17.127611 128959704521856 tokenizer.py:187] Loading sentencepiece tokenizer: src/maxtext/assets/tokenizers/tokenizer.llama2 I0420 15:57:17.470436 128959704521856 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0420 15:57:17.470551 128959704521856 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. W0420 15:57:17.588133 1142873 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 15:57:17.802129 128959704521856 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0420 15:57:17.802224 128959704521856 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0420 15:57:17.807656 128959704521856 nnx_decoders.py:465] Unknown Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0420 15:57:17.807702 128959704521856 nnx_decoders.py:465] Unknown Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0420 15:57:17.822880 128959704521856 attentions.py:1088] attentions/inputs_q Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0420 15:57:17.822937 128959704521856 attentions.py:1088] attentions/inputs_q Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0420 15:57:17.837397 128959704521856 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0420 15:57:17.837447 128959704521856 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0420 15:57:17.859524 128959704521856 attentions.py:1154] attentions/query Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0420 15:57:17.859586 128959704521856 attentions.py:1154] attentions/query Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0420 15:57:17.874159 128959704521856 attentions.py:1155] attentions/key Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0420 15:57:17.874211 128959704521856 attentions.py:1155] attentions/key Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0420 15:57:17.888786 128959704521856 attentions.py:1156] attentions/value Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0420 15:57:17.888835 128959704521856 attentions.py:1156] attentions/value Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0420 15:57:17.917095 128959704521856 attentions.py:1197] attentions/out Logical: bfloat16[8,2048,16,128]..................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0420 15:57:17.917162 128959704521856 attentions.py:1197] attentions/out Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0420 15:57:17.935358 128959704521856 linears.py:525] linears/x Logical: bfloat16[8,2048,7168]....................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0420 15:57:17.935415 128959704521856 linears.py:525] linears/x Physical: bfloat16[8,2048,7168]....................................... ('fsdp', None, None). W0420 15:57:18.318286 1142873 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0420 15:57:18.441254 128959704521856 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. I0420 15:57:18.441878 128959704521856 max_utils.py:194] tensorboardX not available; using no-op SummaryWriter. I0420 15:57:18.443224 128959704521856 metric_logger.py:301] number parameters: 1.104 billion W0420 15:57:21.308609 1142873 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0420 15:57:21.446848 128959704521856 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0420 15:57:21.566097 128959704521856 checkpointing.py:798] Waited 0.11922883987426758 seconds for step 0 to finish before starting checkpointing. I0420 15:57:21.566573 128959704521856 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0420 15:57:21.566726 128959704521856 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 0 I0420 15:57:21.567143 128959704521856 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_07_eval/checkpoints/0. I0420 15:57:21.653486 128959704521856 signaling_client.py:373] Using ThreadSafeKeyValueSignalingClient I0420 15:57:21.743668 128844644222528 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_07_eval/checkpoints/0 I0420 15:57:21.771090 128959704521856 jax_array_handlers.py:347] Scheduling D2H of 69 prioritized jax.Array. I0420 15:57:21.771191 128959704521856 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 15:57:22.491626 128844633736768 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_07_eval/checkpoints/0/items I0420 15:57:22.636227 128844585502272 checkpoint.py:188] Wrote Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776700642399365990, 'commit_timestamp_nsecs': None, 'custom_metadata': {}}, json={"item_handlers": null, "metrics": {}, "performance_metrics": {}, "init_timestamp_nsecs": 1776700642399365990, "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_07_eval/checkpoints/0/_CHECKPOINT_METADATA I0420 15:57:23.001341 1145594 google_auth_provider.cc:149] Using credentials at ~/.config/gcloud/application_default_credentials.json I0420 15:57:23.001400 1145594 google_auth_provider.cc:156] Using OAuth2 AuthProvider I0420 15:57:24.053852 128959704521856 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 2.283897s I0420 15:57:24.060358 128959704521856 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 5.131 GiB/s (total gbytes: 12.3 GiB) (time elapsed: 2 seconds) (per-host) I0420 15:57:24.060425 128959704521856 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 2.405081s (batch_requests_ready=0.106955s, total_serialization_initiated=2.291742s, others=0.006384s) I0420 15:57:24.060501 128959704521856 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 2.406430s (all_items=0.000027s, per_item={'items': '0.00002694'}, temp_paths=2.406403) I0420 15:57:24.061981 128844654708288 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0420 15:57:24.062095 128959704521856 async_checkpointer.py:561] Finished blocking save. Time taken: 2.495327s. 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_07_eval/checkpoints/0. I0420 15:57:24.062281 128959704521856 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0420 15:57:24.062473 128844518393408 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0420 15:57:24.062587 128959704521856 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_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776700641.5665615, 'wait_for_prev_duration_secs': 3.9577484130859375e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776700641.5667477, 'checkpointer_blocking_duration_secs': 2.495457887649536, 'get_old_steps_start_time': 1776700644.0622241, 'get_old_steps_duration_secs': 2.1696090698242188e-05, 'checkpoint_manager_blocking_start_time': 1776700641.5664763, 'checkpoint_manager_blocking_duration_secs': 2.4960854053497314} I0420 15:57:24.062700 128959704521856 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0420 15:57:24.062748 128959704521856 max_utils.py:750] Memstats: After params initialized: I0420 15:57:24.062797 128959704521856 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_0(process=0,(0,0,0,0)) I0420 15:57:24.062828 128959704521856 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_1(process=0,(1,0,0,0)) I0420 15:57:24.062847 128959704521856 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_2(process=0,(0,1,0,0)) I0420 15:57:24.062868 128959704521856 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_3(process=0,(1,1,0,0)) I0420 15:57:24.062885 128959704521856 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_4(process=0,(0,2,0,0)) I0420 15:57:24.062902 128959704521856 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_5(process=0,(1,2,0,0)) I0420 15:57:24.062919 128959704521856 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_6(process=0,(0,3,0,0)) I0420 15:57:24.062936 128959704521856 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_7(process=0,(1,3,0,0)) I0420 15:57:24.473656 128959704521856 metric_logger.py:196] completed step: 0, seconds: 3.002, TFLOP/s/device: 4.526, Tokens/s/device: 682.147, total_weights: 13328, loss: 10.880, lm_loss: 10.880, perplexity: 53108.402 I0420 15:57:24.475005 128959704521856 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_07_eval/tensorboard/' I0420 15:57:24.585717 128959704521856 metric_logger.py:196] completed step: 1, seconds: 3.022, TFLOP/s/device: 4.496, Tokens/s/device: 677.717, total_weights: 12332, loss: 10.862, lm_loss: 10.862, perplexity: 52152.828 I0420 15:57:24.702901 128959704521856 metric_logger.py:196] completed step: 2, seconds: 0.023, TFLOP/s/device: 582.564, Tokens/s/device: 87810.316, total_weights: 15161, loss: 9.926, lm_loss: 9.926, perplexity: 20464.070 I0420 15:57:24.823875 128844612765248 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_07_eval/checkpoints/0/items/array_metadatas/process_0 I0420 15:57:31.254656 128959704521856 train.py:723] Completed eval step 0 I0420 15:57:31.297610 128959704521856 train.py:723] Completed eval step 1 I0420 15:57:31.302905 128959704521856 metric_logger.py:216] eval metrics after step: 4, loss=8.926, perplexity=7524.814, total_weights=26703.0 I0420 15:57:31.303524 128959704521856 metric_logger.py:196] completed step: 3, seconds: 0.105, TFLOP/s/device: 129.147, Tokens/s/device: 19466.385, total_weights: 13327, loss: 9.396, lm_loss: 9.396, perplexity: 12037.986 I0420 15:57:49.568011 128959704521856 metric_logger.py:196] completed step: 4, seconds: 0.116, TFLOP/s/device: 116.950, Tokens/s/device: 17627.971, total_weights: 11939, loss: 9.005, lm_loss: 9.005, perplexity: 8141.998 I0420 15:57:49.578608 128959704521856 metric_logger.py:196] completed step: 5, seconds: 6.600, TFLOP/s/device: 2.059, Tokens/s/device: 310.286, total_weights: 15502, loss: 8.861, lm_loss: 8.861, perplexity: 7054.059 I0420 15:57:49.694464 128959704521856 metric_logger.py:196] completed step: 6, seconds: 18.264, TFLOP/s/device: 0.744, Tokens/s/device: 112.134, total_weights: 13864, loss: 8.738, lm_loss: 8.738, perplexity: 6233.198 I0420 15:57:49.811933 128959704521856 metric_logger.py:196] completed step: 7, seconds: 0.008, TFLOP/s/device: 1603.390, Tokens/s/device: 241680.434, total_weights: 12988, loss: 8.651, lm_loss: 8.651, perplexity: 5718.487 I0420 15:57:50.523207 128959704521856 train.py:723] Completed eval step 0 I0420 15:57:50.562535 128959704521856 train.py:723] Completed eval step 1 I0420 15:57:50.565396 128959704521856 metric_logger.py:216] eval metrics after step: 9, loss=8.623, perplexity=5557.299, total_weights=26703.0 I0420 15:57:50.565892 128959704521856 metric_logger.py:196] completed step: 8, seconds: 0.116, TFLOP/s/device: 116.971, Tokens/s/device: 17631.158, total_weights: 13820, loss: 8.671, lm_loss: 8.671, perplexity: 5832.209 I0420 15:57:50.568878 128959704521856 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0420 15:57:50.570039 128959704521856 checkpointing.py:798] Waited 0.0011625289916992188 seconds for step 9 to finish before starting checkpointing. I0420 15:57:50.570297 128959704521856 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0420 15:57:53.338772 128844623251008 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 29.277609s (commit=28.833421s, array_metadata_write=0.444187s) I0420 15:57:53.339973 128844654708288 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 398.831 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 31 seconds) (per-host) I0420 15:57:53.340036 128844654708288 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 29.277896s. I0420 15:57:53.581248 128844654708288 checkpoint.py:228] Read Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776700642399365990, '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_07_eval/checkpoints/0/_CHECKPOINT_METADATA I0420 15:57:53.760036 128844654708288 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 15:57:53.955531 128844585502272 checkpoint.py:247] Updated Metadata={'item_handlers': {'items': 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler'}, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776700642399365990, '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_07_eval/checkpoints/0/_CHECKPOINT_METADATA I0420 15:57:54.163450 128844654708288 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389). I0420 15:57:54.164245 128844654708288 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.547951s. 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_07_eval/checkpoints/0/items I0420 15:57:54.165100 128844654708288 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_07_eval/checkpoints/0/items I0420 15:57:54.394881 128844654708288 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_07_eval/checkpoints/0 I0420 15:57:55.037807 128844654708288 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_07_eval/checkpoints/0`. I0420 15:57:55.038556 128844654708288 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 33.471796s. directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_07_eval/checkpoints/0 I0420 15:57:55.038635 128844654708288 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 30.976496s. I0420 15:57:55.038850 128844518393408 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0420 15:57:55.038980 128844518393408 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save. I0420 15:57:55.039039 128844518393408 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0420 15:57:55.039098 128844518393408 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0420 15:57:55.039427 128959704521856 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 15:57:55.039586 128959704521856 checkpoint_manager.py:1441] Waiting for previous save to complete took 4.469286 seconds. If this number is high, consider checkpointing less frequently. I0420 15:57:55.040400 128959704521856 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 9 I0420 15:57:55.040716 128959704521856 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_07_eval/checkpoints/9. I0420 15:57:55.207146 128844518393408 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_07_eval/checkpoints/9 I0420 15:57:55.227311 128959704521856 jax_array_handlers.py:347] Scheduling D2H of 69 prioritized jax.Array. I0420 15:57:55.227416 128959704521856 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 15:57:56.565648 128844507907648 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_07_eval/checkpoints/9/items I0420 15:58:01.534774 128959704521856 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 6.308523s I0420 15:58:01.542420 128959704521856 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 1.924 GiB/s (total gbytes: 12.3 GiB) (time elapsed: 6 seconds) (per-host) I0420 15:58:01.542489 128959704521856 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 6.414247s (batch_requests_ready=0.090356s, total_serialization_initiated=6.316368s, others=0.007524s) I0420 15:58:01.542577 128959704521856 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 6.414821s (all_items=0.000015s, per_item={'items': '0.00001454'}, temp_paths=6.414807) I0420 15:58:01.544245 128844623251008 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0420 15:58:01.544343 128959704521856 async_checkpointer.py:561] Finished blocking save. Time taken: 6.503894s. 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_07_eval/checkpoints/9. I0420 15:58:01.544534 128959704521856 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0420 15:58:01.544727 128843767612992 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0420 15:58:01.544808 128959704521856 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_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776700670.5702577, 'wait_for_prev_duration_secs': 4.46928596496582, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776700675.040426, 'checkpointer_blocking_duration_secs': 6.504018545150757, 'get_old_steps_start_time': 1776700681.5444627, 'get_old_steps_duration_secs': 3.2901763916015625e-05, 'checkpoint_manager_blocking_start_time': 1776700670.5702186, 'checkpoint_manager_blocking_duration_secs': 10.974564790725708} I0420 15:58:01.544898 128959704521856 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0420 15:58:01.544930 128959704521856 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0420 15:58:02.302028 128844612765248 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_07_eval/checkpoints/9/items/array_metadatas/process_0 I0420 15:58:45.471647 128844507907648 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 43.928217s (commit=43.438021s, array_metadata_write=0.490195s) I0420 15:58:45.473066 128844623251008 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 251.005 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 50 seconds) (per-host) I0420 15:58:45.473127 128844623251008 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 43.928741s. I0420 15:58:45.897676 128844623251008 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 15:58:46.309522 128844623251008 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389). I0420 15:58:46.309769 128844623251008 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.561932s. 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_07_eval/checkpoints/9/items I0420 15:58:46.310528 128844623251008 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_07_eval/checkpoints/9/items I0420 15:58:46.543796 128844623251008 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_07_eval/checkpoints/9 I0420 15:58:47.231845 128844623251008 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_07_eval/checkpoints/9`. I0420 15:58:47.232630 128844623251008 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 52.192190s. directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260420_142345/nnx_feat_nnx_trainstate_and_training_loop_20260420_142345_07_eval/checkpoints/9 I0420 15:58:47.232712 128844623251008 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 45.688326s. I0420 15:58:47.232891 128843767612992 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0420 15:58:47.232941 128843767612992 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save. I0420 15:58:47.233002 128843767612992 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0420 15:58:47.233040 128843767612992 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0420 15:58:47.234161 128959704521856 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 15:58:47.234391 128959704521856 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0420 15:58:47.235685 128959704521856 metric_logger.py:196] completed step: 9, seconds: 0.119, TFLOP/s/device: 114.449, Tokens/s/device: 17250.964, total_weights: 12300, loss: 8.668, lm_loss: 8.668, perplexity: 5810.989 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops