feat/nnx-trainstate-and-training-loop| Metric | Linen 7c12861a4 | NNX 7c12861a4 | Diff (NNX − Linen) |
|---|---|---|---|
| Parameters | 1.104 billion | 1.104 billion | — |
| Final loss | 8.7100 | 8.6680 | -0.042 |
| TFLOP/s | 115.376 | 114.638 | -0.738 |
| Tok/s | 17390.7 | 17279.5 | -111.222 |
| Avg s/step | 2.902 | 2.478 | -0.424 |
| Memory % | 5.09 | 5.09 | 0 |
| JAX | 0.9.2 | 0.9.2 | — |
Diff = NNX value − Linen value. Green = NNX improved. Red = NNX regressed.
2026-04-16 03:52:46.069125: 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 03:52:46.185420 130766692445312 max_utils.py:238] Skipping jax distributed system due to skip_jax_distributed_system=True flag. I0416 03:53:42.594773 130766692445312 max_utils.py:800] System Information: Jax Version: 0.9.2 I0416 03:53:42.594882 130766692445312 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0416 03:53:42.594917 130766692445312 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 03:53:42.594942 130766692445312 train_utils.py:364] WARNING: 'dataset_path' might be pointing your local file system I0416 03:53:42.595023 130766692445312 train.py:818] [DECOUPLED NO-OP] skipping cloud diagnostics wrapper. W0416 03:53:42.695075 3643195 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 03:53:43.098676 130766692445312 maxtext_utils.py:1687] Num_devices: 8, shape (1, 1, 1, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0416 03:53:43.098848 130766692445312 maxtext_utils.py:1687] Num_devices: 8, shape (1, 1, 1, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0416 03:53:43.099145 130766692445312 checkpointing.py:688] Setting up checkpoint logger... I0416 03:53:43.099186 130766692445312 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0416 03:53:43.099266 130766692445312 pytree_checkpoint_handler.py:577] save_device_host_concurrent_bytes=None I0416 03:53:43.100138 130766692445312 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 0x76ede7ffcad0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0416 03:53:45.482991 130766692445312 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0416 03:53:45.483250 130766692445312 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 0x76e91bf71b50>}, handler_registry=None I0416 03:53:45.483599 130766692445312 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x76e91bf71b50>` 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 03:53:45.483640 130766692445312 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x76e76bb45880>` 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 03:53:45.483669 130766692445312 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 0x76e91bf71b50>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x76e91bf71b50>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x76e76bb45880>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x76e76bb45880>}). I0416 03:53:45.483986 130766692445312 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.28 I0416 03:53:45.484057 130766692445312 async_checkpointer.py:177] [process=0][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>.<lambda> at 0x76e76bb520c0> timeout: 600 secs and primary_host=0 for async checkpoint writes I0416 03:53:45.612308 130766692445312 checkpoint_manager.py:1788] Found 0 checkpoint steps in gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints I0416 03:53:45.612550 130766692445312 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/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x76e76bb45940> I0416 03:53:45.612641 130766692445312 checkpointing.py:302] Checkpoint manager created! I0416 03:53:45.692901 130766692445312 dataset_info.py:707] Load dataset info from tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0 I0416 03:53:45.695891 130766692445312 reader.py:262] Creating a tf.data.Dataset reading 8 files located in folders: tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0. I0416 03:53:45.749020 130766692445312 logging_logger.py:49] Constructing tf.data.Dataset __local_c4_builder for split train, from tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0 I0416 03:53:45.778174 130766692445312 tokenizer.py:245] Tokenizer path: src/maxtext/assets/tokenizers/tokenizer.llama2 I0416 03:53:45.778240 130766692445312 tokenizer.py:187] Loading sentencepiece tokenizer: src/maxtext/assets/tokenizers/tokenizer.llama2 I0416 03:53:46.320851 130766692445312 dataset_info.py:707] Load dataset info from tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0 I0416 03:53:46.322622 130766692445312 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. I0416 03:53:46.338541 130766692445312 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 I0416 03:53:46.341117 130766692445312 tokenizer.py:245] Tokenizer path: src/maxtext/assets/tokenizers/tokenizer.llama2 I0416 03:53:46.341167 130766692445312 tokenizer.py:187] Loading sentencepiece tokenizer: src/maxtext/assets/tokenizers/tokenizer.llama2 I0416 03:53:47.071756 130766692445312 nnx_wrappers.py:437] Unknown Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0416 03:53:47.071856 130766692445312 nnx_wrappers.py:437] Unknown Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0416 03:53:47.174706 130766692445312 attentions.py:1088] attentions/inputs_q Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0416 03:53:47.174783 130766692445312 attentions.py:1088] attentions/inputs_q Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0416 03:53:47.189525 130766692445312 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0416 03:53:47.189572 130766692445312 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0416 03:53:47.210724 130766692445312 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 03:53:47.210777 130766692445312 attentions.py:1154] attentions/query Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 03:53:47.225533 130766692445312 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 03:53:47.225583 130766692445312 attentions.py:1155] attentions/key Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 03:53:47.240358 130766692445312 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 03:53:47.240406 130766692445312 attentions.py:1156] attentions/value Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 03:53:47.263197 130766692445312 attentions.py:1197] attentions/out Logical: bfloat16[8,2048,16,128]..................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0416 03:53:47.263252 130766692445312 attentions.py:1197] attentions/out Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 03:53:47.281756 130766692445312 linears.py:525] linears/x Logical: bfloat16[8,2048,7168]....................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0416 03:53:47.281808 130766692445312 linears.py:525] linears/x Physical: bfloat16[8,2048,7168]....................................... ('fsdp', None, None). I0416 03:53:47.474362 130766692445312 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0416 03:53:47.474456 130766692445312 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. W0416 03:53:47.525085 3643195 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 03:53:47.912379 130766692445312 maxtext_utils.py:1790] params/params/decoder/decoder_norm/scale Shape: float32[2048] Logical: P('norm',) Physical: (None,) I0416 03:53:47.912482 130766692445312 maxtext_utils.py:1790] params/params/decoder/layers/mlp/wi_0/kernel Shape: float32[2048,16,7168] Logical: P('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0416 03:53:47.912521 130766692445312 maxtext_utils.py:1790] params/params/decoder/layers/mlp/wi_1/kernel Shape: float32[2048,16,7168] Logical: P('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0416 03:53:47.912563 130766692445312 maxtext_utils.py:1790] params/params/decoder/layers/mlp/wo/kernel Shape: float32[7168,16,2048] Logical: P('mlp', 'layers', 'embed') Physical: (None, None, 'fsdp') I0416 03:53:47.912603 130766692445312 maxtext_utils.py:1790] params/params/decoder/layers/post_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: P('norm', 'layers') Physical: (None, None) I0416 03:53:47.912631 130766692445312 maxtext_utils.py:1790] params/params/decoder/layers/pre_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: P('norm', 'layers') Physical: (None, None) I0416 03:53:47.912673 130766692445312 maxtext_utils.py:1790] params/params/decoder/layers/self_attention/key/kernel Shape: float32[2048,16,16,128] Logical: P('embed', 'layers', 'kv_heads', 'kv_head_dim') Physical: ('fsdp', None, None, None) I0416 03:53:47.912722 130766692445312 maxtext_utils.py:1790] params/params/decoder/layers/self_attention/out/kernel Shape: float32[16,16,128,2048] Logical: P('heads', 'layers', 'kv', 'embed') Physical: (None, None, None, 'fsdp') I0416 03:53:47.912751 130766692445312 maxtext_utils.py:1790] params/params/decoder/layers/self_attention/query/kernel Shape: float32[2048,16,16,128] Logical: P('embed', 'layers', 'q_heads', 'kv') Physical: ('fsdp', None, None, None) I0416 03:53:47.912777 130766692445312 maxtext_utils.py:1790] params/params/decoder/layers/self_attention/value/kernel Shape: float32[2048,16,16,128] Logical: P('embed', 'layers', 'kv_heads', 'kv_head_dim') Physical: ('fsdp', None, None, None) I0416 03:53:47.912811 130766692445312 maxtext_utils.py:1790] params/params/decoder/logits_dense/kernel Shape: float32[2048,32000] Logical: P('embed_vocab', 'vocab') Physical: ('fsdp', None) I0416 03:53:47.912844 130766692445312 maxtext_utils.py:1790] params/params/token_embedder/embedding Shape: float32[32000,2048] Logical: P('vocab', 'embed_vocab') Physical: (None, 'fsdp') I0416 03:53:48.344637 130766692445312 train.py:157] train/xent Logical: float32[8,2048]............................................. ('activation_embed_and_logits_batch', 'activation_length'). I0416 03:53:48.344724 130766692445312 train.py:157] train/xent Physical: float32[8,2048]............................................. ('fsdp', None). I0416 03:53:48.359118 130766692445312 train.py:164] train/z_loss Logical: float32[8,2048]............................................. ('activation_embed_and_logits_batch', 'activation_length'). I0416 03:53:48.359168 130766692445312 train.py:164] train/z_loss Physical: float32[8,2048]............................................. ('fsdp', None). W0416 03:53:48.658706 3643195 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 03:53:48.779925 130766692445312 max_utils.py:791] Total memory size: 3.6 GB, Output size: 1.5 GB, Temp size: 2.0 GB, Argument size: 1.5 GB, Host temp size: 0.0 GB. I0416 03:53:48.780422 130766692445312 max_utils.py:194] tensorboardX not available; using no-op SummaryWriter. I0416 03:53:48.780564 130766692445312 metric_logger.py:289] number parameters: 1.104 billion W0416 03:53:51.867451 3643195 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 03:53:51.999257 130766692445312 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0416 03:53:52.119429 130766692445312 checkpointing.py:798] Waited 0.12015986442565918 seconds for step 0 to finish before starting checkpointing. I0416 03:53:52.119854 130766692445312 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0416 03:53:52.120005 130766692445312 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 0 I0416 03:53:52.120383 130766692445312 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0. I0416 03:53:52.206959 130766692445312 signaling_client.py:373] Using ThreadSafeKeyValueSignalingClient I0416 03:53:52.290553 130651565065792 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0 I0416 03:53:52.299593 130766692445312 jax_array_handlers.py:347] Scheduling D2H of 39 prioritized jax.Array. I0416 03:53:52.299682 130766692445312 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 W0416 03:53:52.514230 3643195 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 03:53:52.525072 3643195 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 03:53:52.535509 3643195 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 03:53:52.545721 3643195 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 03:53:52.554174 3643195 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 03:53:52.565715 3643195 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 03:53:52.571902 3643195 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 03:53:52.577762 3643195 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 03:53:53.006443 130651554580032 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0/items I0416 03:53:53.170512 130651523122752 checkpoint.py:188] Wrote Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776311632917999911, 'commit_timestamp_nsecs': None, 'custom_metadata': {}}, json={"item_handlers": null, "metrics": {}, "performance_metrics": {}, "init_timestamp_nsecs": 1776311632917999911, "commit_timestamp_nsecs": null, "custom_metadata": {}} to gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0/_CHECKPOINT_METADATA I0416 03:53:53.369432 130766692445312 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 1.070244s I0416 03:53:53.369838 130766692445312 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 10.621 GiB/s (total gbytes: 12.3 GiB) (time elapsed: a second) (per-host) I0416 03:53:53.369886 130766692445312 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 1.161999s (batch_requests_ready=0.087998s, total_serialization_initiated=1.073691s, others=0.000309s) I0416 03:53:53.369944 130766692445312 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 1.162518s (all_items=0.000018s, per_item={'items': '0.00001812'}, temp_paths=1.162499) I0416 03:53:53.370761 130651502151232 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0416 03:53:53.370858 130766692445312 async_checkpointer.py:561] Finished blocking save. Time taken: 1.250814s. Continuing background save to gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0. I0416 03:53:53.371037 130766692445312 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0416 03:53:53.371217 130651575551552 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0416 03:53:53.371317 130766692445312 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776311632.1198344, 'wait_for_prev_duration_secs': 4.839897155761719e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776311632.1200259, 'checkpointer_blocking_duration_secs': 1.2509424686431885, 'get_old_steps_start_time': 1776311633.3709855, 'get_old_steps_duration_secs': 1.8596649169921875e-05, 'checkpoint_manager_blocking_start_time': 1776311632.1197526, 'checkpoint_manager_blocking_duration_secs': 1.2515392303466797} I0416 03:53:53.371422 130766692445312 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0416 03:53:53.371466 130766692445312 max_utils.py:750] Memstats: After params initialized: I0416 03:53:53.371542 130766692445312 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_0(process=0,(0,0,0,0)) I0416 03:53:53.371569 130766692445312 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_1(process=0,(1,0,0,0)) I0416 03:53:53.371589 130766692445312 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_2(process=0,(0,1,0,0)) I0416 03:53:53.371607 130766692445312 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_3(process=0,(1,1,0,0)) I0416 03:53:53.371629 130766692445312 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_4(process=0,(0,2,0,0)) I0416 03:53:53.371645 130766692445312 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_5(process=0,(1,2,0,0)) I0416 03:53:53.371662 130766692445312 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_6(process=0,(0,3,0,0)) I0416 03:53:53.371679 130766692445312 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_7(process=0,(1,3,0,0)) W0416 03:53:53.377466 3643195 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 03:53:53.383485 3643195 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 03:53:53.388556 3643195 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 03:53:53.466612 3646059 google_auth_provider.cc:149] Using credentials at ~/.config/gcloud/application_default_credentials.json I0416 03:53:53.466688 3646059 google_auth_provider.cc:156] Using OAuth2 AuthProvider I0416 03:53:53.731080 130766692445312 metric_logger.py:185] completed step: 0, seconds: 3.218, TFLOP/s/device: 4.222, Tokens/s/device: 636.377, total_weights: 13328, loss: 10.828 I0416 03:53:53.732110 130766692445312 metric_logger.py:269] To see full metrics 'tensorboard --logdir=gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/tensorboard/' I0416 03:53:53.846478 130766692445312 metric_logger.py:185] completed step: 1, seconds: 1.730, TFLOP/s/device: 7.856, Tokens/s/device: 1184.077, total_weights: 12332, loss: 10.828 I0416 03:53:53.963781 130766692445312 metric_logger.py:185] completed step: 2, seconds: 0.010, TFLOP/s/device: 1334.033, Tokens/s/device: 201080.020, total_weights: 15161, loss: 9.823 I0416 03:53:54.711220 130651544094272 array_metadata_store.py:203] [process=0][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0/items/array_metadatas/process_0 W0416 03:53:58.206720 3643195 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 03:53:58.289727 130766692445312 train.py:735] Completed eval step 0 I0416 03:53:58.331234 130766692445312 train.py:735] Completed eval step 1 I0416 03:53:58.335561 130766692445312 metric_logger.py:204] eval metrics after step: 4, loss=8.979, total_weights=26703.0 I0416 03:53:58.335898 130766692445312 metric_logger.py:185] completed step: 3, seconds: 0.116, TFLOP/s/device: 117.457, Tokens/s/device: 17704.470, total_weights: 13327, loss: 9.405 I0416 03:54:17.870653 130766692445312 metric_logger.py:185] completed step: 4, seconds: 0.121, TFLOP/s/device: 112.377, Tokens/s/device: 16938.639, total_weights: 11939, loss: 9.045 I0416 03:54:17.878972 130766692445312 metric_logger.py:185] completed step: 5, seconds: 4.368, TFLOP/s/device: 3.111, Tokens/s/device: 468.877, total_weights: 15502, loss: 8.953 I0416 03:54:17.995696 130766692445312 metric_logger.py:185] completed step: 6, seconds: 19.534, TFLOP/s/device: 0.696, Tokens/s/device: 104.840, total_weights: 13864, loss: 8.775 I0416 03:54:18.113423 130766692445312 metric_logger.py:185] completed step: 7, seconds: 0.006, TFLOP/s/device: 2358.058, Tokens/s/device: 355432.142, total_weights: 12988, loss: 8.688 I0416 03:54:18.789766 130766692445312 train.py:735] Completed eval step 0 I0416 03:54:18.829969 130766692445312 train.py:735] Completed eval step 1 I0416 03:54:18.832496 130766692445312 metric_logger.py:204] eval metrics after step: 9, loss=8.653, total_weights=26703.0 I0416 03:54:18.832748 130766692445312 metric_logger.py:185] completed step: 8, seconds: 0.117, TFLOP/s/device: 115.639, Tokens/s/device: 17430.381, total_weights: 13820, loss: 8.740 I0416 03:54:18.834403 130766692445312 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0416 03:54:18.834992 130766692445312 checkpointing.py:798] Waited 0.0005929470062255859 seconds for step 9 to finish before starting checkpointing. I0416 03:54:18.835259 130766692445312 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0416 03:54:19.221794 130651512636992 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 25.753463s (commit=25.314267s, array_metadata_write=0.439196s) I0416 03:54:19.222987 130651502151232 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 467.769 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 27 seconds) (per-host) I0416 03:54:19.223118 130651502151232 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 25.852206s. I0416 03:54:19.437533 130651502151232 checkpoint.py:228] Read Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776311632917999911, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} from gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0/_CHECKPOINT_METADATA I0416 03:54:19.623688 130651502151232 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 03:54:19.830882 130651523122752 checkpoint.py:247] Updated Metadata={'item_handlers': {'items': 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler'}, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776311632917999911, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} to gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0/_CHECKPOINT_METADATA I0416 03:54:20.040796 130651502151232 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389). I0416 03:54:20.040984 130651502151232 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.557783s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0/items I0416 03:54:20.041669 130651502151232 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0/items I0416 03:54:20.282784 130651502151232 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0 I0416 03:54:20.971520 130651502151232 atomicity.py:794] [process=0][thread=async_save] Finished saving checkpoint (finalized tmp dir) to `gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0`. I0416 03:54:20.972183 130651502151232 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 28.852142s. directory=gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0 I0416 03:54:20.972267 130651502151232 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 27.601363s. I0416 03:54:20.972428 130651575551552 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0416 03:54:20.972530 130651575551552 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save. I0416 03:54:20.972595 130651575551552 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0416 03:54:20.972653 130651575551552 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0416 03:54:20.972802 130766692445312 checkpoint_manager.py:2006] [process=0][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0. W0416 03:54:20.972929 130766692445312 checkpoint_manager.py:1441] Waiting for previous save to complete took 2.137680 seconds. If this number is high, consider checkpointing less frequently. I0416 03:54:20.974115 130766692445312 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 9 I0416 03:54:20.974411 130766692445312 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/9. I0416 03:54:21.158837 130766692445312 jax_array_handlers.py:347] Scheduling D2H of 39 prioritized jax.Array. I0416 03:54:21.158928 130766692445312 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 03:54:21.168008 130651575551552 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/9 I0416 03:54:21.850944 130651422459456 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/9/items I0416 03:54:32.459985 130766692445312 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 11.301536s I0416 03:54:32.464524 130766692445312 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 1.084 GiB/s (total gbytes: 12.3 GiB) (time elapsed: 11 seconds) (per-host) I0416 03:54:32.464597 130766692445312 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 11.388629s (batch_requests_ready=0.079579s, total_serialization_initiated=11.304714s, others=0.004336s) I0416 03:54:32.464670 130766692445312 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 11.389153s (all_items=0.000023s, per_item={'items': '0.00002313'}, temp_paths=11.389130) I0416 03:54:32.466152 130651575551552 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0416 03:54:32.466257 130766692445312 async_checkpointer.py:561] Finished blocking save. Time taken: 11.492097s. Continuing background save to gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/9. I0416 03:54:32.466571 130766692445312 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0416 03:54:32.466742 130651502151232 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0416 03:54:32.466855 130766692445312 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776311658.8352184, 'wait_for_prev_duration_secs': 2.1376800537109375, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776311660.9741406, 'checkpointer_blocking_duration_secs': 11.492316961288452, 'get_old_steps_start_time': 1776311672.46648, 'get_old_steps_duration_secs': 4.8160552978515625e-05, 'checkpoint_manager_blocking_start_time': 1776311658.8351684, 'checkpoint_manager_blocking_duration_secs': 13.631645917892456} I0416 03:54:32.466978 130766692445312 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0416 03:54:32.467013 130766692445312 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0416 03:54:33.200584 130649767806528 array_metadata_store.py:203] [process=0][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/9/items/array_metadatas/process_0 I0416 03:55:04.498726 130651544094272 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 32.033421s (commit=31.610265s, array_metadata_write=0.423156s) I0416 03:55:04.499913 130651575551552 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 291.010 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 43 seconds) (per-host) I0416 03:55:04.500020 130651575551552 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 32.033658s. I0416 03:55:04.916578 130651575551552 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 03:55:05.315886 130651575551552 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389). I0416 03:55:05.316065 130651575551552 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.546688s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/9/items I0416 03:55:05.316711 130651575551552 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/9/items I0416 03:55:05.556892 130651575551552 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/9 I0416 03:55:06.242561 130651575551552 atomicity.py:794] [process=0][thread=async_save] Finished saving checkpoint (finalized tmp dir) to `gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/9`. I0416 03:55:06.243199 130651575551552 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 45.269045s. directory=gs://wanglance-maxtext/linen_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/linen_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/9 I0416 03:55:06.243273 130651575551552 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 33.776913s. I0416 03:55:06.243427 130651502151232 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0416 03:55:06.243526 130651502151232 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save. I0416 03:55:06.243586 130651502151232 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0416 03:55:06.243629 130651502151232 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0416 03:55:06.244024 130766692445312 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 03:55:06.244165 130766692445312 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0416 03:55:06.245104 130766692445312 metric_logger.py:185] completed step: 9, seconds: 0.118, TFLOP/s/device: 115.376, Tokens/s/device: 17390.714, total_weights: 12300, loss: 8.710 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops
2026-04-16 05:14:22.637893: E external/local_xla/xla/stream_executor/cuda/cuda_platform.cc:51] failed call to cuInit: INTERNAL: CUDA error: Failed call to cuInit: UNKNOWN ERROR (303) I0416 05:14:22.753641 129848029183104 max_utils.py:238] Skipping jax distributed system due to skip_jax_distributed_system=True flag. I0416 05:15:19.426808 129848029183104 max_utils.py:800] System Information: Jax Version: 0.9.2 I0416 05:15:19.426914 129848029183104 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0416 05:15:19.426951 129848029183104 max_utils.py:802] System Information: Jax Backend: PJRT C API TFRT TPU v6 lite Built on Apr 6 2026 20:48:10 (1775533690) cl/895581894 I0416 05:15:19.426977 129848029183104 train_utils.py:364] WARNING: 'dataset_path' might be pointing your local file system I0416 05:15:19.427079 129848029183104 train.py:818] [DECOUPLED NO-OP] skipping cloud diagnostics wrapper. W0416 05:15:19.521279 3728844 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 05:15:19.924568 129848029183104 maxtext_utils.py:1687] Num_devices: 8, shape (1, 1, 1, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0416 05:15:20.023151 129848029183104 checkpointing.py:688] Setting up checkpoint logger... I0416 05:15:20.023244 129848029183104 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0416 05:15:20.023286 129848029183104 pytree_checkpoint_handler.py:577] save_device_host_concurrent_bytes=None I0416 05:15:20.023478 129848029183104 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 0x7618035f8f20>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0416 05:15:22.452828 129848029183104 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0416 05:15:22.453004 129848029183104 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 0x761187143770>}, handler_registry=None I0416 05:15:22.453276 129848029183104 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x761187143770>` for item "items" and save args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>` to `_handler_registry`. I0416 05:15:22.453318 129848029183104 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x761185dcc0b0>` for item "metrics" and save args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>` to `_handler_registry`. I0416 05:15:22.453347 129848029183104 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 0x761187143770>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x761187143770>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x761185dcc0b0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x761185dcc0b0>}). I0416 05:15:22.453768 129848029183104 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.28 I0416 05:15:22.453818 129848029183104 async_checkpointer.py:177] [process=0][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>.<lambda> at 0x761186d89940> timeout: 600 secs and primary_host=0 for async checkpoint writes I0416 05:15:22.578839 129848029183104 checkpoint_manager.py:1788] Found 0 checkpoint steps in gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints I0416 05:15:22.579092 129848029183104 checkpoint_manager.py:921] [process=0][thread=MainThread] CheckpointManager created, primary_host=0, CheckpointManagerOptions=CheckpointManagerOptions(save_interval_steps=1, max_to_keep=None, keep_time_interval=None, keep_period=None, should_keep_fn=None, best_fn=None, best_mode='max', keep_checkpoints_without_metrics=True, step_prefix=None, step_format_fixed_length=None, step_name_format=None, create=True, cleanup_tmp_directories=False, save_on_steps=frozenset(), single_host_load_and_broadcast=False, todelete_subdir=None, todelete_full_path=None, enable_hns=False, enable_background_delete=False, read_only=False, enable_async_checkpointing=True, async_options=None, multiprocessing_options=MultiprocessingOptions(primary_host=0, active_processes=None, barrier_sync_key_prefix=None), should_save_fn=None, file_options=FileOptions(path_permission_mode=None), save_root_metadata=True, temporary_path_class=None, save_decision_policy=FixedIntervalPolicy(interval=10), preservation_policy=LatestN(n=None), prevent_write_metrics=False, enable_should_save_is_saving_in_progress_check=True, enable_per_process_directory_creation=False), root_directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x761185dcccb0> I0416 05:15:22.579173 129848029183104 checkpointing.py:302] Checkpoint manager created! I0416 05:15:22.659477 129848029183104 dataset_info.py:707] Load dataset info from tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0 I0416 05:15:22.662459 129848029183104 reader.py:262] Creating a tf.data.Dataset reading 8 files located in folders: tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0. I0416 05:15:22.714464 129848029183104 logging_logger.py:49] Constructing tf.data.Dataset __local_c4_builder for split train, from tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0 I0416 05:15:22.746268 129848029183104 tokenizer.py:245] Tokenizer path: src/maxtext/assets/tokenizers/tokenizer.llama2 I0416 05:15:22.746396 129848029183104 tokenizer.py:187] Loading sentencepiece tokenizer: src/maxtext/assets/tokenizers/tokenizer.llama2 I0416 05:15:23.650057 129848029183104 dataset_info.py:707] Load dataset info from tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0 I0416 05:15:23.651566 129848029183104 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. I0416 05:15:23.667610 129848029183104 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 I0416 05:15:23.670226 129848029183104 tokenizer.py:245] Tokenizer path: src/maxtext/assets/tokenizers/tokenizer.llama2 I0416 05:15:23.670275 129848029183104 tokenizer.py:187] Loading sentencepiece tokenizer: src/maxtext/assets/tokenizers/tokenizer.llama2 I0416 05:15:24.011057 129848029183104 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0416 05:15:24.011164 129848029183104 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. W0416 05:15:24.122254 3728844 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. [DECOUPLED NO-OP] gcs_storage: using stubs. [DECOUPLED NO-OP] mldiagnostics: using stub. [DECOUPLED NO-OP] mldiagnostics: using stub. [DECOUPLED NO-OP] mldiagnostics: using stub. [DECOUPLED NO-OP] workload_monitor: using stub. [DECOUPLED NO-OP] vertex_tensorboard: using stub. fsdp: 8 I0416 05:15:24.333626 129848029183104 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0416 05:15:24.333712 129848029183104 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0416 05:15:24.338727 129848029183104 nnx_decoders.py:465] Unknown Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0416 05:15:24.338774 129848029183104 nnx_decoders.py:465] Unknown Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0416 05:15:24.353793 129848029183104 attentions.py:1088] attentions/inputs_q Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0416 05:15:24.353843 129848029183104 attentions.py:1088] attentions/inputs_q Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0416 05:15:24.368292 129848029183104 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0416 05:15:24.368341 129848029183104 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0416 05:15:24.391430 129848029183104 attentions.py:1154] attentions/query Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0416 05:15:24.391488 129848029183104 attentions.py:1154] attentions/query Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 05:15:24.406058 129848029183104 attentions.py:1155] attentions/key Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0416 05:15:24.406111 129848029183104 attentions.py:1155] attentions/key Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 05:15:24.420621 129848029183104 attentions.py:1156] attentions/value Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0416 05:15:24.420674 129848029183104 attentions.py:1156] attentions/value Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 05:15:24.448717 129848029183104 attentions.py:1197] attentions/out Logical: bfloat16[8,2048,16,128]..................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0416 05:15:24.448779 129848029183104 attentions.py:1197] attentions/out Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 05:15:24.466846 129848029183104 linears.py:525] linears/x Logical: bfloat16[8,2048,7168]....................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0416 05:15:24.466899 129848029183104 linears.py:525] linears/x Physical: bfloat16[8,2048,7168]....................................... ('fsdp', None, None). W0416 05:15:24.849056 3728844 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 05:15:24.972935 129848029183104 max_utils.py:791] Total memory size: 3.6 GB, Output size: 1.5 GB, Temp size: 2.0 GB, Argument size: 1.5 GB, Host temp size: 0.0 GB. I0416 05:15:24.973441 129848029183104 max_utils.py:194] tensorboardX not available; using no-op SummaryWriter. I0416 05:15:24.974771 129848029183104 metric_logger.py:289] number parameters: 1.104 billion W0416 05:15:27.796588 3728844 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 05:15:27.934923 129848029183104 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0416 05:15:28.054782 129848029183104 checkpointing.py:798] Waited 0.11984801292419434 seconds for step 0 to finish before starting checkpointing. I0416 05:15:28.055211 129848029183104 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0416 05:15:28.055358 129848029183104 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 0 I0416 05:15:28.055713 129848029183104 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0. I0416 05:15:28.154903 129848029183104 signaling_client.py:373] Using ThreadSafeKeyValueSignalingClient I0416 05:15:28.253401 129848029183104 jax_array_handlers.py:347] Scheduling D2H of 69 prioritized jax.Array. I0416 05:15:28.253488 129848029183104 replica_slices.py:410] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False I0416 05:15:28.259742 129732941186624 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0 W0416 05:15:28.888995 3728844 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 05:15:28.910297 3728844 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 05:15:28.925632 3728844 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 05:15:28.935730 3728844 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 05:15:28.944304 3728844 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 05:15:28.948958 3728844 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 05:15:28.953174 3728844 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 05:15:28.957037 3728844 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 05:15:29.013392 129732930700864 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0/items I0416 05:15:29.126625 129732878272064 checkpoint.py:188] Wrote Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776316528887840032, 'commit_timestamp_nsecs': None, 'custom_metadata': {}}, json={"item_handlers": null, "metrics": {}, "performance_metrics": {}, "init_timestamp_nsecs": 1776316528887840032, "commit_timestamp_nsecs": null, "custom_metadata": {}} to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0/_CHECKPOINT_METADATA I0416 05:15:29.201477 129848029183104 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.949057s I0416 05:15:29.202013 129848029183104 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 11.800 GiB/s (total gbytes: 12.3 GiB) (time elapsed: a second) (per-host) I0416 05:15:29.202088 129848029183104 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 1.045997s (batch_requests_ready=0.088351s, total_serialization_initiated=0.957254s, others=0.000392s) I0416 05:15:29.202163 129848029183104 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 1.046781s (all_items=0.000018s, per_item={'items': '0.00001788'}, temp_paths=1.046763) I0416 05:15:29.203085 129732857300544 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0416 05:15:29.203253 129848029183104 async_checkpointer.py:561] Finished blocking save. Time taken: 1.147850s. Continuing background save to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0. I0416 05:15:29.203433 129848029183104 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0416 05:15:29.203630 129732951672384 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0416 05:15:29.203752 129848029183104 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776316528.0551977, 'wait_for_prev_duration_secs': 4.220008850097656e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776316528.0553782, 'checkpointer_blocking_duration_secs': 1.1479558944702148, 'get_old_steps_start_time': 1776316529.203361, 'get_old_steps_duration_secs': 2.9087066650390625e-05, 'checkpoint_manager_blocking_start_time': 1776316528.055118, 'checkpoint_manager_blocking_duration_secs': 1.1485867500305176} I0416 05:15:29.203865 129848029183104 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0416 05:15:29.203933 129848029183104 max_utils.py:750] Memstats: After params initialized: I0416 05:15:29.204108 129848029183104 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_0(process=0,(0,0,0,0)) I0416 05:15:29.204140 129848029183104 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_1(process=0,(1,0,0,0)) I0416 05:15:29.204164 129848029183104 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_2(process=0,(0,1,0,0)) I0416 05:15:29.204182 129848029183104 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_3(process=0,(1,1,0,0)) I0416 05:15:29.204199 129848029183104 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_4(process=0,(0,2,0,0)) I0416 05:15:29.204221 129848029183104 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_5(process=0,(1,2,0,0)) I0416 05:15:29.204237 129848029183104 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_6(process=0,(0,3,0,0)) I0416 05:15:29.204254 129848029183104 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_7(process=0,(1,3,0,0)) W0416 05:15:29.210419 3728844 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 05:15:29.216317 3728844 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 05:15:29.221484 3728844 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 05:15:29.524685 129848029183104 metric_logger.py:185] completed step: 0, seconds: 2.959, TFLOP/s/device: 4.592, Tokens/s/device: 692.149, total_weights: 13328, loss: 10.880 I0416 05:15:29.525646 129848029183104 metric_logger.py:269] To see full metrics 'tensorboard --logdir=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/tensorboard/' I0416 05:15:29.553124 3732393 google_auth_provider.cc:149] Using credentials at ~/.config/gcloud/application_default_credentials.json I0416 05:15:29.553180 3732393 google_auth_provider.cc:156] Using OAuth2 AuthProvider I0416 05:15:29.638028 129848029183104 metric_logger.py:185] completed step: 1, seconds: 1.586, TFLOP/s/device: 8.566, Tokens/s/device: 1291.138, total_weights: 12332, loss: 10.862 I0416 05:15:29.755411 129848029183104 metric_logger.py:185] completed step: 2, seconds: 0.020, TFLOP/s/device: 669.911, Tokens/s/device: 100976.235, total_weights: 15161, loss: 9.926 I0416 05:15:30.909990 129732920215104 array_metadata_store.py:203] [process=0][thread=array_type_handler] Wrote 69 array_metadata.ArrayMetadata to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0/items/array_metadatas/process_0 W0416 05:15:31.197539 3728844 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 05:15:31.829916 129848029183104 train.py:735] Completed eval step 0 I0416 05:15:31.878512 129848029183104 train.py:735] Completed eval step 1 I0416 05:15:31.889200 129848029183104 metric_logger.py:204] eval metrics after step: 4, loss=8.926, total_weights=26703.0 I0416 05:15:31.889808 129848029183104 metric_logger.py:185] completed step: 3, seconds: 0.107, TFLOP/s/device: 126.902, Tokens/s/device: 19128.031, total_weights: 13327, loss: 9.396 I0416 05:15:49.985010 129848029183104 metric_logger.py:185] completed step: 4, seconds: 0.117, TFLOP/s/device: 116.094, Tokens/s/device: 17498.889, total_weights: 11939, loss: 9.005 I0416 05:15:49.995489 129848029183104 metric_logger.py:185] completed step: 5, seconds: 2.143, TFLOP/s/device: 6.341, Tokens/s/device: 955.811, total_weights: 15502, loss: 8.861 I0416 05:15:50.111102 129848029183104 metric_logger.py:185] completed step: 6, seconds: 18.086, TFLOP/s/device: 0.751, Tokens/s/device: 113.234, total_weights: 13864, loss: 8.738 I0416 05:15:50.228706 129848029183104 metric_logger.py:185] completed step: 7, seconds: 0.009, TFLOP/s/device: 1515.744, Tokens/s/device: 228469.433, total_weights: 12988, loss: 8.651 I0416 05:15:50.908847 129848029183104 train.py:735] Completed eval step 0 I0416 05:15:50.949105 129848029183104 train.py:735] Completed eval step 1 I0416 05:15:50.951711 129848029183104 metric_logger.py:204] eval metrics after step: 9, loss=8.623, total_weights=26703.0 I0416 05:15:50.951971 129848029183104 metric_logger.py:185] completed step: 8, seconds: 0.114, TFLOP/s/device: 118.739, Tokens/s/device: 17897.561, total_weights: 13820, loss: 8.671 I0416 05:15:50.954548 129848029183104 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0416 05:15:50.955502 129848029183104 checkpointing.py:798] Waited 0.0009562969207763672 seconds for step 9 to finish before starting checkpointing. I0416 05:15:50.955753 129848029183104 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0416 05:16:06.126256 129732867786304 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 36.569271s (commit=36.153546s, array_metadata_write=0.415725s) I0416 05:16:06.127377 129732857300544 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 332.799 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 37 seconds) (per-host) I0416 05:16:06.127478 129732857300544 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 36.924275s. I0416 05:16:06.379507 129732857300544 checkpoint.py:228] Read Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776316528887840032, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} from gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0/_CHECKPOINT_METADATA I0416 05:16:06.573641 129732857300544 array_metadata_store.py:367] [process=0][thread=async_save] Skipped cross-host ArrayMetadata validation because only one process is found: process_index=0. I0416 05:16:06.767786 129732878272064 checkpoint.py:247] Updated Metadata={'item_handlers': {'items': 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler'}, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776316528887840032, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0/_CHECKPOINT_METADATA I0416 05:16:07.033987 129732857300544 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389). I0416 05:16:07.034178 129732857300544 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.612267s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0/items I0416 05:16:07.034749 129732857300544 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0/items I0416 05:16:07.284876 129732857300544 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0 I0416 05:16:07.961144 129732857300544 atomicity.py:794] [process=0][thread=async_save] Finished saving checkpoint (finalized tmp dir) to `gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0`. I0416 05:16:07.961766 129732857300544 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 39.906376s. directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/0 I0416 05:16:07.961840 129732857300544 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 38.758639s. I0416 05:16:07.961960 129732951672384 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0416 05:16:07.962010 129732951672384 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save. I0416 05:16:07.962075 129732951672384 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0416 05:16:07.962119 129732951672384 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0416 05:16:07.962198 129848029183104 checkpoint_manager.py:2006] [process=0][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0. W0416 05:16:07.962264 129848029183104 checkpoint_manager.py:1441] Waiting for previous save to complete took 17.006526 seconds. If this number is high, consider checkpointing less frequently. I0416 05:16:07.963232 129848029183104 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 9 I0416 05:16:07.963468 129848029183104 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/9. I0416 05:16:08.136237 129848029183104 jax_array_handlers.py:347] Scheduling D2H of 69 prioritized jax.Array. I0416 05:16:08.136370 129732951672384 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/9 I0416 05:16:08.136449 129848029183104 replica_slices.py:410] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False I0416 05:16:08.839450 129732714694208 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/9/items I0416 05:16:17.259299 129848029183104 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 9.124383s I0416 05:16:17.266182 129848029183104 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 1.338 GiB/s (total gbytes: 12.3 GiB) (time elapsed: 9 seconds) (per-host) I0416 05:16:17.266262 129848029183104 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 9.220852s (batch_requests_ready=0.082436s, total_serialization_initiated=9.131616s, others=0.006800s) I0416 05:16:17.266351 129848029183104 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 9.221397s (all_items=0.000018s, per_item={'items': '0.00001764'}, temp_paths=9.221379) I0416 05:16:17.267903 129732951672384 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0416 05:16:17.267999 129848029183104 async_checkpointer.py:561] Finished blocking save. Time taken: 9.304718s. Continuing background save to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/9. I0416 05:16:17.268222 129848029183104 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0416 05:16:17.268414 129732857300544 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0416 05:16:17.268522 129848029183104 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776316550.9557161, 'wait_for_prev_duration_secs': 17.006526470184326, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776316567.9632626, 'checkpointer_blocking_duration_secs': 9.304867029190063, 'get_old_steps_start_time': 1776316577.268152, 'get_old_steps_duration_secs': 3.147125244140625e-05, 'checkpoint_manager_blocking_start_time': 1776316550.95568, 'checkpoint_manager_blocking_duration_secs': 26.312816858291626} I0416 05:16:17.268665 129848029183104 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0416 05:16:17.268700 129848029183104 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0416 05:16:18.033222 129732920215104 array_metadata_store.py:203] [process=0][thread=array_type_handler] Wrote 69 array_metadata.ArrayMetadata to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/9/items/array_metadatas/process_0 I0416 05:16:50.507343 129732714694208 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 33.240409s (commit=32.804479s, array_metadata_write=0.435930s) I0416 05:16:50.508440 129732951672384 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 297.595 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 42 seconds) (per-host) I0416 05:16:50.508544 129732951672384 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 33.240497s. I0416 05:16:50.918261 129732951672384 array_metadata_store.py:367] [process=0][thread=async_save] Skipped cross-host ArrayMetadata validation because only one process is found: process_index=0. I0416 05:16:51.360923 129732951672384 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389). I0416 05:16:51.361102 129732951672384 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.588675s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/9/items I0416 05:16:51.361765 129732951672384 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/9/items I0416 05:16:51.587979 129732951672384 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/9 I0416 05:16:52.265159 129732951672384 atomicity.py:794] [process=0][thread=async_save] Finished saving checkpoint (finalized tmp dir) to `gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/9`. I0416 05:16:52.265769 129732951672384 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 44.302495s. directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_trainstate_and_training_loop_20260416_033532/nnx_feat_nnx_trainstate_and_training_loop_20260416_033532_07_eval/checkpoints/9 I0416 05:16:52.265845 129732951672384 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 34.997801s. I0416 05:16:52.266051 129732857300544 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0416 05:16:52.266155 129732857300544 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save. I0416 05:16:52.266211 129732857300544 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0416 05:16:52.266253 129732857300544 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0416 05:16:52.266406 129848029183104 checkpoint_manager.py:2006] [process=0][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9. I0416 05:16:52.266588 129848029183104 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0416 05:16:52.267179 129848029183104 metric_logger.py:185] completed step: 9, seconds: 0.119, TFLOP/s/device: 114.638, Tokens/s/device: 17279.492, total_weights: 12300, loss: 8.668 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops