2026-04-21 18:11:38.018157: E external/local_xla/xla/stream_executor/cuda/cuda_fft.cc:467] Unable to register cuFFT factory: Attempting to register factory for plugin cuFFT when one has already been registered WARNING: All log messages before absl::InitializeLog() is called are written to STDERR E0000 00:00:1776795098.028118 1699270 cuda_dnn.cc:8579] Unable to register cuDNN factory: Attempting to register factory for plugin cuDNN when one has already been registered E0000 00:00:1776795098.031239 1699270 cuda_blas.cc:1407] Unable to register cuBLAS factory: Attempting to register factory for plugin cuBLAS when one has already been registered W0000 00:00:1776795098.041096 1699270 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once. W0000 00:00:1776795098.041106 1699270 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once. W0000 00:00:1776795098.041108 1699270 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once. W0000 00:00:1776795098.041109 1699270 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once. Unrecognized keys in `rope_scaling` for 'rope_type'='yarn': {'rope_theta'} `rope_scaling`'s factor field must be a float >= 1, got 40 `rope_scaling`'s beta_fast field must be a float, got 32 `rope_scaling`'s beta_slow field must be a float, got 1 Unrecognized keys in `rope_scaling` for 'rope_type'='yarn': {'rope_theta'} Unrecognized keys in `rope_scaling` for 'rope_type'='yarn': {'rope_theta'} Unrecognized keys in `rope_scaling` for 'rope_type'='yarn': {'rope_theta'} 2026-04-21 18:11:41.708108: E external/local_xla/xla/stream_executor/cuda/cuda_platform.cc:51] failed call to cuInit: INTERNAL: CUDA error: Failed call to cuInit: UNKNOWN ERROR (303) I0421 18:11:41.843636 129072678169728 max_utils.py:238] Skipping jax distributed system due to skip_jax_distributed_system=True flag. I0421 18:12:10.635173 129072678169728 max_utils.py:800] System Information: Jax Version: 0.8.1 I0421 18:12:10.635446 129072678169728 max_utils.py:801] System Information: Jaxlib Version: 0.8.1 I0421 18:12:10.635492 129072678169728 max_utils.py:802] System Information: Jax Backend: PJRT C API TFRT TPU v6 lite Built on Nov 12 2025 14:16:36 (1762985796) cl/831091709 I0421 18:12:10.635524 129072678169728 train_utils.py:378] WARNING: 'dataset_path' might be pointing your local file system I0421 18:12:10.635710 129072678169728 train.py:806] [DECOUPLED NO-OP] skipping cloud diagnostics wrapper. I0421 18:12:11.267363 129072678169728 maxtext_utils.py:1732] Num_devices: 8, shape (1, 1, 1, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0421 18:12:11.366477 129072678169728 checkpointing.py:688] Setting up checkpoint logger... I0421 18:12:11.366590 129072678169728 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0421 18:12:11.366628 129072678169728 pytree_checkpoint_handler.py:577] save_device_host_concurrent_bytes=None I0421 18:12:11.366798 129072678169728 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 0x7563c97ad100>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0421 18:12:13.811304 129072678169728 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0421 18:12:13.811499 129072678169728 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 0x7562211f5a30>}, handler_registry=None I0421 18:12:13.811725 129072678169728 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7562211f5a30>` for item "items" and save args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>` to `_handler_registry`. I0421 18:12:13.811765 129072678169728 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7562211f5c10>` for item "metrics" and save args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>` to `_handler_registry`. I0421 18:12:13.811793 129072678169728 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 0x7562211f5a30>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7562211f5a30>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7562211f5c10>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7562211f5c10>}). I0421 18:12:13.812086 129072678169728 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.28 I0421 18:12:13.812138 129072678169728 async_checkpointer.py:177] [process=0][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>.<lambda> at 0x7562221acc20> timeout: 600 secs and primary_host=0 for async checkpoint writes I0421 18:12:13.981514 129072678169728 checkpoint_manager.py:1788] Found 0 checkpoint steps in gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints I0421 18:12:13.981753 129072678169728 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_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7562211f6390> I0421 18:12:13.981832 129072678169728 checkpointing.py:302] Checkpoint manager created! I0421 18:12:14.072726 129072678169728 dataset_info.py:707] Load dataset info from tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0 I0421 18:12:14.075715 129072678169728 reader.py:262] Creating a tf.data.Dataset reading 8 files located in folders: tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0. I0421 18:12:14.128321 129072678169728 logging_logger.py:49] Constructing tf.data.Dataset __local_c4_builder for split train, from tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0 I0421 18:12:14.151273 129072678169728 tokenizer.py:245] Tokenizer path: src/maxtext/assets/tokenizers/tokenizer.llama2 I0421 18:12:14.151336 129072678169728 tokenizer.py:187] Loading sentencepiece tokenizer: src/maxtext/assets/tokenizers/tokenizer.llama2 I0421 18:12:14.807022 129072678169728 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0421 18:12:14.807153 129072678169728 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. [DECOUPLED NO-OP] gcs_storage: using stubs. [DECOUPLED NO-OP] mldiagnostics: using stub. [DECOUPLED NO-OP] mldiagnostics: using stub. [DECOUPLED NO-OP] mldiagnostics: using stub. [DECOUPLED NO-OP] workload_monitor: using stub. [DECOUPLED NO-OP] vertex_tensorboard: using stub. fsdp: 8 I0421 18:12:15.680565 129072678169728 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0421 18:12:15.680795 129072678169728 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0421 18:12:15.686207 129072678169728 nnx_decoders.py:465] Unknown Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0421 18:12:15.686361 129072678169728 nnx_decoders.py:465] Unknown Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0421 18:12:15.699612 129072678169728 attentions.py:1088] attentions/inputs_q Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0421 18:12:15.699694 129072678169728 attentions.py:1088] attentions/inputs_q Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0421 18:12:15.712174 129072678169728 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0421 18:12:15.712255 129072678169728 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0421 18:12:15.732836 129072678169728 attentions.py:1154] attentions/query Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0421 18:12:15.732927 129072678169728 attentions.py:1154] attentions/query Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0421 18:12:15.745667 129072678169728 attentions.py:1155] attentions/key Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0421 18:12:15.745751 129072678169728 attentions.py:1155] attentions/key Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0421 18:12:15.758307 129072678169728 attentions.py:1156] attentions/value Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0421 18:12:15.758390 129072678169728 attentions.py:1156] attentions/value Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0421 18:12:15.780186 129072678169728 attentions.py:1198] attentions/out Logical: bfloat16[8,2048,16,128]..................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0421 18:12:15.780280 129072678169728 attentions.py:1198] attentions/out Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0421 18:12:15.799408 129072678169728 linears.py:525] linears/x Logical: bfloat16[8,2048,7168]....................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0421 18:12:15.799496 129072678169728 linears.py:525] linears/x Physical: bfloat16[8,2048,7168]....................................... ('fsdp', None, None). I0421 18:12:16.894840 129072678169728 max_utils.py:791] Total memory size: 3.6 GB, Output size: 1.5 GB, Temp size: 2.0 GB, Argument size: 1.5 GB, Host temp size: 0.0 GB. I0421 18:12:16.898467 129072678169728 max_utils.py:194] tensorboardX not available; using no-op SummaryWriter. I0421 18:12:16.899885 129072678169728 metric_logger.py:301] number parameters: 1.104 billion I0421 18:12:22.601467 129072678169728 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0421 18:12:22.722253 129072678169728 checkpointing.py:798] Waited 0.12076807022094727 seconds for step 0 to finish before starting checkpointing. I0421 18:12:22.722757 129072678169728 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0421 18:12:22.722915 129072678169728 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 0 I0421 18:12:22.723339 129072678169728 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/0. I0421 18:12:22.819539 129072678169728 signaling_client.py:373] Using ThreadSafeKeyValueSignalingClient I0421 18:12:22.921910 129072678169728 jax_array_handlers.py:347] Scheduling D2H of 69 prioritized jax.Array. I0421 18:12:22.922010 129072678169728 replica_slices.py:410] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False I0421 18:12:22.939206 128982074787392 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/0 I0421 18:12:23.773579 128982064301632 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/0/items I0421 18:12:23.948575 128982032844352 checkpoint.py:188] Wrote Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776795143648267860, 'commit_timestamp_nsecs': None, 'custom_metadata': {}}, json={"item_handlers": null, "metrics": {}, "performance_metrics": {}, "init_timestamp_nsecs": 1776795143648267860, "commit_timestamp_nsecs": null, "custom_metadata": {}} to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/0/_CHECKPOINT_METADATA I0421 18:12:24.443137 129072678169728 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 1.522540s I0421 18:12:24.443709 129072678169728 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 7.605 GiB/s (total gbytes: 12.3 GiB) (time elapsed: a second) (per-host) I0421 18:12:24.443769 129072678169728 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 1.622843s (batch_requests_ready=0.092067s, total_serialization_initiated=1.530339s, others=0.000437s) I0421 18:12:24.443842 129072678169728 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 1.623728s (all_items=0.000021s, per_item={'items': '0.00002074'}, temp_paths=1.623708) I0421 18:12:24.444686 128982011872832 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0421 18:12:24.444821 129072678169728 async_checkpointer.py:561] Finished blocking save. Time taken: 1.721860s. Continuing background save to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/0. I0421 18:12:24.445075 129072678169728 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0421 18:12:24.445289 128982085273152 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0421 18:12:24.445412 129072678169728 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776795142.7227314, 'wait_for_prev_duration_secs': 5.53131103515625e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776795142.7229373, 'checkpointer_blocking_duration_secs': 1.7220275402069092, 'get_old_steps_start_time': 1776795144.4449868, 'get_old_steps_duration_secs': 2.7894973754882812e-05, 'checkpoint_manager_blocking_start_time': 1776795142.7226481, 'checkpoint_manager_blocking_duration_secs': 1.7227253913879395} I0421 18:12:24.445524 129072678169728 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0421 18:12:24.445594 129072678169728 max_utils.py:750] Memstats: After params initialized: I0421 18:12:24.445719 129072678169728 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_0(process=0,(0,0,0,0)) I0421 18:12:24.445747 129072678169728 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_1(process=0,(1,0,0,0)) I0421 18:12:24.445769 129072678169728 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_2(process=0,(0,1,0,0)) I0421 18:12:24.445788 129072678169728 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_3(process=0,(1,1,0,0)) I0421 18:12:24.445807 129072678169728 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_4(process=0,(0,2,0,0)) I0421 18:12:24.445823 129072678169728 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_5(process=0,(1,2,0,0)) I0421 18:12:24.445840 129072678169728 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_6(process=0,(0,3,0,0)) I0421 18:12:24.445857 129072678169728 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_7(process=0,(1,3,0,0)) I0421 18:12:24.528174 1701746 google_auth_provider.cc:149] Using credentials at ~/.config/gcloud/application_default_credentials.json I0421 18:12:24.528250 1701746 google_auth_provider.cc:156] Using OAuth2 AuthProvider I0421 18:12:24.830802 129072678169728 metric_logger.py:196] completed step: 0, seconds: 5.700, TFLOP/s/device: 2.384, Tokens/s/device: 359.283, total_weights: 13328, loss: 10.880, lm_loss: 10.880, perplexity: 53108.402 I0421 18:12:24.831820 129072678169728 metric_logger.py:281] To see full metrics 'tensorboard --logdir=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/tensorboard/' I0421 18:12:24.944231 129072678169728 metric_logger.py:196] completed step: 1, seconds: 2.225, TFLOP/s/device: 6.106, Tokens/s/device: 920.377, total_weights: 12332, loss: 10.862, lm_loss: 10.862, perplexity: 52152.828 I0421 18:12:25.061605 129072678169728 metric_logger.py:196] completed step: 2, seconds: 0.021, TFLOP/s/device: 633.167, Tokens/s/device: 95437.812, total_weights: 15161, loss: 9.926, lm_loss: 9.926, perplexity: 20464.070 I0421 18:12:25.179365 129072678169728 metric_logger.py:196] completed step: 3, seconds: 0.106, TFLOP/s/device: 128.048, Tokens/s/device: 19300.726, total_weights: 13327, loss: 9.396, lm_loss: 9.396, perplexity: 12037.986 I0421 18:12:25.394321 128982053815872 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_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/0/items/array_metadatas/process_0 I0421 18:12:39.999580 129072678169728 metric_logger.py:196] completed step: 4, seconds: 0.118, TFLOP/s/device: 115.214, Tokens/s/device: 17366.234, total_weights: 11939, loss: 9.005, lm_loss: 9.005, perplexity: 8141.998 I0421 18:12:40.040515 129072678169728 metric_logger.py:196] completed step: 5, seconds: 0.117, TFLOP/s/device: 115.813, Tokens/s/device: 17456.529, total_weights: 15502, loss: 8.861, lm_loss: 8.861, perplexity: 7054.059 I0421 18:12:40.155441 129072678169728 metric_logger.py:196] completed step: 6, seconds: 14.848, TFLOP/s/device: 0.915, Tokens/s/device: 137.930, total_weights: 13864, loss: 8.738, lm_loss: 8.738, perplexity: 6233.198 I0421 18:12:40.273503 129072678169728 metric_logger.py:196] completed step: 7, seconds: 0.010, TFLOP/s/device: 1303.322, Tokens/s/device: 196450.839, total_weights: 12988, loss: 8.651, lm_loss: 8.651, perplexity: 5718.487 I0421 18:12:40.391343 129072678169728 metric_logger.py:196] completed step: 8, seconds: 0.119, TFLOP/s/device: 113.929, Tokens/s/device: 17172.564, total_weights: 13820, loss: 8.671, lm_loss: 8.671, perplexity: 5832.209 I0421 18:12:40.509603 129072678169728 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0421 18:12:40.511000 129072678169728 checkpointing.py:798] Waited 0.0014111995697021484 seconds for step 9 to finish before starting checkpointing. I0421 18:12:40.512498 129072678169728 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0421 18:13:08.711422 128982022358592 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 44.188672s (commit=43.714943s, array_metadata_write=0.473729s) I0421 18:13:08.712894 128982011872832 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 275.360 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 45 seconds) (per-host) I0421 18:13:08.713029 128982011872832 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 44.268134s. I0421 18:13:08.963463 128982011872832 checkpoint.py:228] Read Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776795143648267860, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} from gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/0/_CHECKPOINT_METADATA I0421 18:13:09.150825 128982011872832 array_metadata_store.py:367] [process=0][thread=async_save] Skipped cross-host ArrayMetadata validation because only one process is found: process_index=0. I0421 18:13:09.362386 128982032844352 checkpoint.py:247] Updated Metadata={'item_handlers': {'items': 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler'}, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776795143648267860, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/0/_CHECKPOINT_METADATA I0421 18:13:09.563810 128982011872832 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389). I0421 18:13:09.564430 128982011872832 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.562192s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/0/items I0421 18:13:09.565189 128982011872832 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/0/items I0421 18:13:09.799966 128982011872832 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/0 I0421 18:13:10.515069 128982011872832 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_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/0`. I0421 18:13:10.515810 128982011872832 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 47.792858s. directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/0 I0421 18:13:10.515901 128982011872832 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 46.071012s. I0421 18:13:10.516113 128982085273152 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0421 18:13:10.516231 128982085273152 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save. I0421 18:13:10.516295 128982085273152 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0421 18:13:10.516351 128982085273152 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0421 18:13:10.516714 129072678169728 checkpoint_manager.py:2006] [process=0][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0. W0421 18:13:10.516866 129072678169728 checkpoint_manager.py:1441] Waiting for previous save to complete took 30.004417 seconds. If this number is high, consider checkpointing less frequently. I0421 18:13:10.518133 129072678169728 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 9 I0421 18:13:10.518477 129072678169728 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/9. I0421 18:13:10.690874 128982085273152 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/9 I0421 18:13:10.738700 129072678169728 jax_array_handlers.py:347] Scheduling D2H of 69 prioritized jax.Array. I0421 18:13:10.738811 129072678169728 replica_slices.py:410] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False I0421 18:13:11.243486 129072678169728 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.506211s I0421 18:13:11.244076 129072678169728 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 19.207 GiB/s (total gbytes: 12.3 GiB) (time elapsed: 642 milliseconds) (per-host) I0421 18:13:11.244146 129072678169728 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 0.642631s (batch_requests_ready=0.127796s, total_serialization_initiated=0.514385s, others=0.000450s) I0421 18:13:11.244242 129072678169728 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.643285s (all_items=0.000023s, per_item={'items': '0.00002337'}, temp_paths=0.643262) I0421 18:13:11.245492 128981944763968 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0421 18:13:11.245630 129072678169728 async_checkpointer.py:561] Finished blocking save. Time taken: 0.727442s. Continuing background save to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/9. I0421 18:13:11.245958 129072678169728 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0421 18:13:11.246251 128981934278208 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0421 18:13:11.246447 129072678169728 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776795160.5124147, 'wait_for_prev_duration_secs': 30.004416704177856, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776795190.518159, 'checkpointer_blocking_duration_secs': 0.7275986671447754, 'get_old_steps_start_time': 1776795191.2457805, 'get_old_steps_duration_secs': 0.00011157989501953125, 'checkpoint_manager_blocking_start_time': 1776795160.5123377, 'checkpoint_manager_blocking_duration_secs': 30.73404312133789} I0421 18:13:11.246617 129072678169728 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0421 18:13:11.246657 129072678169728 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0421 18:13:11.503188 128982064301632 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/9/items I0421 18:13:12.732660 128981965735488 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_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/9/items/array_metadatas/process_0 I0421 18:13:51.200838 128981955249728 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 39.239246s (commit=38.787532s, array_metadata_write=0.451714s) I0421 18:13:51.202242 128981944763968 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 311.246 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 40 seconds) (per-host) I0421 18:13:51.202407 128981944763968 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 39.956719s. I0421 18:13:51.787076 128981944763968 array_metadata_store.py:367] [process=0][thread=async_save] Skipped cross-host ArrayMetadata validation because only one process is found: process_index=0. I0421 18:13:52.199949 128981944763968 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389). I0421 18:13:52.200232 128981944763968 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.653798s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/9/items I0421 18:13:52.201035 128981944763968 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/9/items I0421 18:13:52.455238 128981944763968 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/9 I0421 18:13:53.135901 128981944763968 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_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/9`. I0421 18:13:53.136703 128981944763968 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 42.618527s. directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260421_161934/nnx_feat_nnx_trainstate_and_training_loop_20260421_161934_10_shardy_true/checkpoints/9 I0421 18:13:53.136810 128981944763968 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 41.891124s. I0421 18:13:53.137125 128981934278208 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0421 18:13:53.137270 128981934278208 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save. I0421 18:13:53.137372 128981934278208 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0421 18:13:53.137434 128981934278208 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0421 18:13:53.137597 129072678169728 checkpoint_manager.py:2006] [process=0][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9. I0421 18:13:53.137795 129072678169728 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0421 18:13:53.138845 129072678169728 metric_logger.py:196] completed step: 9, seconds: 0.118, TFLOP/s/device: 115.454, Tokens/s/device: 17402.536, 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