2026-04-16 20:10:01.517187: 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 20:10:01.632038 124264621628544 max_utils.py:238] Skipping jax distributed system due to skip_jax_distributed_system=True flag. I0416 20:10:44.067821 124264621628544 max_utils.py:800] System Information: Jax Version: 0.9.2 I0416 20:10:44.067929 124264621628544 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0416 20:10:44.067962 124264621628544 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 20:10:44.067987 124264621628544 train_utils.py:364] WARNING: 'dataset_path' might be pointing your local file system I0416 20:10:44.068159 124264621628544 train.py:811] [DECOUPLED NO-OP] skipping cloud diagnostics wrapper. W0416 20:10:44.160497 4083297 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 20:10:44.563774 124264621628544 maxtext_utils.py:1687] Num_devices: 8, shape (1, 1, 1, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0416 20:10:44.662370 124264621628544 checkpointing.py:688] Setting up checkpoint logger... I0416 20:10:44.662466 124264621628544 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0416 20:10:44.662508 124264621628544 pytree_checkpoint_handler.py:577] save_device_host_concurrent_bytes=None I0416 20:10:44.662704 124264621628544 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 0x7104065fcf80>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0416 20:10:47.101414 124264621628544 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0416 20:10:47.101595 124264621628544 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 0x70fd88d5faa0>}, handler_registry=None I0416 20:10:47.101869 124264621628544 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x70fd88d5faa0>` 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 20:10:47.101911 124264621628544 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x70fd8abdb9b0>` 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 20:10:47.101939 124264621628544 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 0x70fd88d5faa0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x70fd88d5faa0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x70fd8abdb9b0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x70fd8abdb9b0>}). I0416 20:10:47.102398 124264621628544 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.28 I0416 20:10:47.102453 124264621628544 async_checkpointer.py:177] [process=0][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>.<lambda> at 0x70fd89979760> timeout: 600 secs and primary_host=0 for async checkpoint writes I0416 20:10:47.228453 124264621628544 checkpoint_manager.py:1788] Found 0 checkpoint steps in gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints I0416 20:10:47.228681 124264621628544 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_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x70fd89942030> I0416 20:10:47.228762 124264621628544 checkpointing.py:302] Checkpoint manager created! I0416 20:10:47.313107 124264621628544 dataset_info.py:707] Load dataset info from tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0 I0416 20:10:47.316414 124264621628544 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 20:10:47.370244 124264621628544 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 20:10:47.402680 124264621628544 tokenizer.py:245] Tokenizer path: src/maxtext/assets/tokenizers/tokenizer.llama2 I0416 20:10:47.402749 124264621628544 tokenizer.py:187] Loading sentencepiece tokenizer: src/maxtext/assets/tokenizers/tokenizer.llama2 I0416 20:10:48.437466 124264621628544 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0416 20:10:48.437607 124264621628544 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. W0416 20:10:48.548834 4083297 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 20:10:48.637985 124264621628544 maxtext_utils.py:1805] decoder/decoder_norm/scale/value Shape: float32[2048] Physical: (None,) I0416 20:10:48.638103 124264621628544 maxtext_utils.py:1805] decoder/layers/mlp/wi_0/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, None) I0416 20:10:48.638147 124264621628544 maxtext_utils.py:1805] decoder/layers/mlp/wi_1/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, None) I0416 20:10:48.638180 124264621628544 maxtext_utils.py:1805] decoder/layers/mlp/wo/kernel/value Shape: float32[7168,16,2048] Physical: (None, None, 'fsdp') I0416 20:10:48.638207 124264621628544 maxtext_utils.py:1805] decoder/layers/post_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: (None, None) I0416 20:10:48.638232 124264621628544 maxtext_utils.py:1805] decoder/layers/pre_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: (None, None) I0416 20:10:48.638258 124264621628544 maxtext_utils.py:1805] decoder/layers/self_attention/key/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0416 20:10:48.638283 124264621628544 maxtext_utils.py:1805] decoder/layers/self_attention/out/kernel/value Shape: float32[16,16,128,2048] Physical: (None, None, None, 'fsdp') I0416 20:10:48.638307 124264621628544 maxtext_utils.py:1805] decoder/layers/self_attention/query/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0416 20:10:48.638330 124264621628544 maxtext_utils.py:1805] decoder/layers/self_attention/value/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0416 20:10:48.638354 124264621628544 maxtext_utils.py:1805] decoder/logits_dense/kernel/value Shape: float32[2048,32000] Physical: ('fsdp', None) I0416 20:10:48.638377 124264621628544 maxtext_utils.py:1805] token_embedder/embedding/value Shape: float32[32000,2048] Physical: (None, 'fsdp') I0416 20:10:48.753658 124264621628544 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0416 20:10:48.753740 124264621628544 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0416 20:10:48.758784 124264621628544 nnx_decoders.py:465] Unknown Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0416 20:10:48.758831 124264621628544 nnx_decoders.py:465] Unknown Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0416 20:10:48.774035 124264621628544 attentions.py:1088] attentions/inputs_q Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0416 20:10:48.774107 124264621628544 attentions.py:1088] attentions/inputs_q Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0416 20:10:48.788746 124264621628544 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0416 20:10:48.788795 124264621628544 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0416 20:10:48.810940 124264621628544 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 20:10:48.810994 124264621628544 attentions.py:1154] attentions/query Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 20:10:48.825773 124264621628544 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 20:10:48.825826 124264621628544 attentions.py:1155] attentions/key Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 20:10:48.840564 124264621628544 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 20:10:48.840621 124264621628544 attentions.py:1156] attentions/value Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 20:10:48.868689 124264621628544 attentions.py:1197] attentions/out Logical: bfloat16[8,2048,16,128]..................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0416 20:10:48.868750 124264621628544 attentions.py:1197] attentions/out Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 20:10:48.887027 124264621628544 linears.py:525] linears/x Logical: bfloat16[8,2048,7168]....................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0416 20:10:48.887093 124264621628544 linears.py:525] linears/x Physical: bfloat16[8,2048,7168]....................................... ('fsdp', None, None). W0416 20:10:49.253138 4083297 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 20:10:49.369096 124264621628544 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 20:10:49.369597 124264621628544 max_utils.py:194] tensorboardX not available; using no-op SummaryWriter. I0416 20:10:49.370915 124264621628544 metric_logger.py:289] number parameters: 1.104 billion W0416 20:10:52.198873 4083297 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 20:10:52.335618 124264621628544 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0416 20:10:52.455317 124264621628544 checkpointing.py:798] Waited 0.11968755722045898 seconds for step 0 to finish before starting checkpointing. I0416 20:10:52.455739 124264621628544 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0416 20:10:52.455896 124264621628544 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 0 I0416 20:10:52.456275 124264621628544 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/0. I0416 20:10:52.557092 124264621628544 signaling_client.py:373] Using ThreadSafeKeyValueSignalingClient I0416 20:10:52.659545 124264621628544 jax_array_handlers.py:347] Scheduling D2H of 69 prioritized jax.Array. I0416 20:10:52.659691 124151406790208 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/0 I0416 20:10:52.660081 124264621628544 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 20:10:53.315119 4083297 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 20:10:53.330201 4083297 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 20:10:53.337295 4083297 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 20:10:53.345980 4083297 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 20:10:53.352416 4083297 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 20:10:53.365747 4083297 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 20:10:53.372411 4083297 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 20:10:53.377778 4083297 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 20:10:53.379983 124151396304448 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/0/items I0416 20:10:53.557627 124151348069952 checkpoint.py:188] Wrote Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776370253284651570, 'commit_timestamp_nsecs': None, 'custom_metadata': {}}, json={"item_handlers": null, "metrics": {}, "performance_metrics": {}, "init_timestamp_nsecs": 1776370253284651570, "commit_timestamp_nsecs": null, "custom_metadata": {}} to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/0/_CHECKPOINT_METADATA I0416 20:10:53.965094 4086014 google_auth_provider.cc:149] Using credentials at ~/.config/gcloud/application_default_credentials.json I0416 20:10:53.965148 4086014 google_auth_provider.cc:156] Using OAuth2 AuthProvider I0416 20:10:54.072406 124264621628544 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 1.414182s I0416 20:10:54.072931 124264621628544 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 8.149 GiB/s (total gbytes: 12.3 GiB) (time elapsed: a second) (per-host) I0416 20:10:54.073003 124264621628544 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 1.514424s (batch_requests_ready=0.091637s, total_serialization_initiated=1.422452s, others=0.000334s) I0416 20:10:54.073099 124264621628544 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 1.515274s (all_items=0.000020s, per_item={'items': '0.00001979'}, temp_paths=1.515254) I0416 20:10:54.082011 124151274669632 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0416 20:10:54.082148 124264621628544 async_checkpointer.py:561] Finished blocking save. Time taken: 1.626203s. Continuing background save to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/0. I0416 20:10:54.082402 124264621628544 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0416 20:10:54.082686 124151417275968 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0416 20:10:54.082812 124264621628544 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776370252.4557264, 'wait_for_prev_duration_secs': 4.029273986816406e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776370252.4559171, 'checkpointer_blocking_duration_secs': 1.626382827758789, 'get_old_steps_start_time': 1776370254.082327, 'get_old_steps_duration_secs': 3.123283386230469e-05, 'checkpoint_manager_blocking_start_time': 1776370252.4556475, 'checkpoint_manager_blocking_duration_secs': 1.6271283626556396} I0416 20:10:54.082972 124264621628544 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0416 20:10:54.083068 124264621628544 max_utils.py:750] Memstats: After params initialized: I0416 20:10:54.083123 124264621628544 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_0(process=0,(0,0,0,0)) I0416 20:10:54.083150 124264621628544 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_1(process=0,(1,0,0,0)) I0416 20:10:54.083171 124264621628544 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_2(process=0,(0,1,0,0)) I0416 20:10:54.083191 124264621628544 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_3(process=0,(1,1,0,0)) I0416 20:10:54.083210 124264621628544 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_4(process=0,(0,2,0,0)) I0416 20:10:54.083227 124264621628544 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_5(process=0,(1,2,0,0)) I0416 20:10:54.083246 124264621628544 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_6(process=0,(0,3,0,0)) I0416 20:10:54.083263 124264621628544 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_7(process=0,(1,3,0,0)) W0416 20:10:54.089573 4083297 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 20:10:54.095106 4083297 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 20:10:54.099738 4083297 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 20:10:54.426273 124264621628544 metric_logger.py:185] completed step: 0, seconds: 2.963, TFLOP/s/device: 4.585, Tokens/s/device: 691.089, total_weights: 13328, loss: 10.880 I0416 20:10:54.427283 124264621628544 metric_logger.py:269] To see full metrics 'tensorboard --logdir=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/tensorboard/' I0416 20:10:54.539683 124264621628544 metric_logger.py:185] completed step: 1, seconds: 2.087, TFLOP/s/device: 6.511, Tokens/s/device: 981.335, total_weights: 12332, loss: 10.862 I0416 20:10:54.656558 124264621628544 metric_logger.py:185] completed step: 2, seconds: 0.021, TFLOP/s/device: 658.355, Tokens/s/device: 99234.422, total_weights: 15161, loss: 9.926 I0416 20:10:54.773708 124264621628544 metric_logger.py:185] completed step: 3, seconds: 0.107, TFLOP/s/device: 127.569, Tokens/s/device: 19228.603, total_weights: 13327, loss: 9.396 I0416 20:10:55.068967 124151295641152 array_metadata_store.py:203] [process=0][thread=array_type_handler] Wrote 69 array_metadata.ArrayMetadata to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/0/items/array_metadatas/process_0 I0416 20:11:14.092726 124264621628544 metric_logger.py:185] completed step: 4, seconds: 0.117, TFLOP/s/device: 116.507, Tokens/s/device: 17561.160, total_weights: 11939, loss: 9.005 I0416 20:11:14.102578 124264621628544 metric_logger.py:185] completed step: 5, seconds: 0.117, TFLOP/s/device: 116.068, Tokens/s/device: 17495.003, total_weights: 15502, loss: 8.861 I0416 20:11:14.217793 124264621628544 metric_logger.py:185] completed step: 6, seconds: 19.318, TFLOP/s/device: 0.703, Tokens/s/device: 106.016, total_weights: 13864, loss: 8.738 I0416 20:11:14.335556 124264621628544 metric_logger.py:185] completed step: 7, seconds: 0.007, TFLOP/s/device: 1867.647, Tokens/s/device: 281512.027, total_weights: 12988, loss: 8.651 I0416 20:11:14.452900 124264621628544 metric_logger.py:185] completed step: 8, seconds: 0.117, TFLOP/s/device: 116.463, Tokens/s/device: 17554.536, total_weights: 13820, loss: 8.671 I0416 20:11:14.571529 124264621628544 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0416 20:11:14.572628 124264621628544 checkpointing.py:798] Waited 0.001112222671508789 seconds for step 9 to finish before starting checkpointing. I0416 20:11:14.573451 124264621628544 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0416 20:11:28.030790 124151285155392 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 33.957278s (commit=33.513236s, array_metadata_write=0.444042s) I0416 20:11:28.031937 124151274669632 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 356.233 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 35 seconds) (per-host) I0416 20:11:28.031995 124151274669632 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 33.949778s. I0416 20:11:28.294154 124151274669632 checkpoint.py:228] Read Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776370253284651570, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} from gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/0/_CHECKPOINT_METADATA I0416 20:11:28.487283 124151274669632 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 20:11:28.710952 124151348069952 checkpoint.py:247] Updated Metadata={'item_handlers': {'items': 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler'}, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776370253284651570, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/0/_CHECKPOINT_METADATA I0416 20:11:28.940927 124151274669632 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389). I0416 20:11:28.941534 124151274669632 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.595560s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/0/items I0416 20:11:28.942189 124151274669632 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/0/items I0416 20:11:29.201418 124151274669632 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/0 I0416 20:11:29.897031 124151274669632 atomicity.py:794] [process=0][thread=async_save] Finished saving checkpoint (finalized tmp dir) to `gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/0`. I0416 20:11:29.897681 124151274669632 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 37.441752s. directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/0 I0416 20:11:29.897758 124151274669632 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 35.815542s. I0416 20:11:29.897906 124151417275968 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0416 20:11:29.898008 124151417275968 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save. I0416 20:11:29.898077 124151417275968 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0416 20:11:29.898124 124151417275968 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0416 20:11:29.898308 124264621628544 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 20:11:29.898439 124264621628544 checkpoint_manager.py:1441] Waiting for previous save to complete took 15.324991 seconds. If this number is high, consider checkpointing less frequently. I0416 20:11:29.899219 124264621628544 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 9 I0416 20:11:29.899503 124264621628544 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/9. I0416 20:11:30.083054 124264621628544 jax_array_handlers.py:347] Scheduling D2H of 69 prioritized jax.Array. I0416 20:11:30.083190 124151417275968 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/9 I0416 20:11:30.083273 124264621628544 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 20:11:30.817808 124151264183872 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/9/items I0416 20:11:38.633055 124264621628544 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 8.551300s I0416 20:11:38.639986 124264621628544 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 1.426 GiB/s (total gbytes: 12.3 GiB) (time elapsed: 8 seconds) (per-host) I0416 20:11:38.640063 124264621628544 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 8.651743s (batch_requests_ready=0.086311s, total_serialization_initiated=8.558611s, others=0.006821s) I0416 20:11:38.640151 124264621628544 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 8.652304s (all_items=0.000017s, per_item={'items': '0.00001693'}, temp_paths=8.652287) I0416 20:11:38.641596 124151285155392 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0416 20:11:38.641682 124264621628544 async_checkpointer.py:561] Finished blocking save. Time taken: 8.742415s. Continuing background save to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/9. I0416 20:11:38.641888 124264621628544 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0416 20:11:38.642089 124151295641152 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0416 20:11:38.642191 124264621628544 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776370274.5734162, 'wait_for_prev_duration_secs': 15.32499098777771, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776370289.899247, 'checkpointer_blocking_duration_secs': 8.74254322052002, 'get_old_steps_start_time': 1776370298.6418107, 'get_old_steps_duration_secs': 3.4809112548828125e-05, 'checkpoint_manager_blocking_start_time': 1776370274.5733724, 'checkpoint_manager_blocking_duration_secs': 24.068794012069702} I0416 20:11:38.642324 124264621628544 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0416 20:11:38.642357 124264621628544 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0416 20:11:39.436918 124151327098432 array_metadata_store.py:203] [process=0][thread=array_type_handler] Wrote 69 array_metadata.ArrayMetadata to gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/9/items/array_metadatas/process_0 I0416 20:12:33.741106 124151316612672 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 55.100596s (commit=54.649846s, array_metadata_write=0.450750s) I0416 20:12:33.742172 124151285155392 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 198.212 MiB/s (total gbytes: 12.3 GiB) (time elapsed: a minute) (per-host) I0416 20:12:33.742238 124151285155392 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 55.100511s. I0416 20:12:34.183034 124151285155392 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 20:12:34.628778 124151285155392 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389). I0416 20:12:34.628959 124151285155392 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.594827s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/9/items I0416 20:12:34.629615 124151285155392 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/9/items I0416 20:12:34.896393 124151285155392 atomicity.py:608] Finalizing gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/9 I0416 20:12:35.599436 124151285155392 atomicity.py:794] [process=0][thread=async_save] Finished saving checkpoint (finalized tmp dir) to `gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/9`. I0416 20:12:35.600094 124151285155392 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 65.700834s. directory=gs://wanglance-maxtext/nnx_ckpt_feat_nnx_post_train_fixes_20260416_181521/nnx_feat_nnx_post_train_fixes_20260416_181521_10_shardy_true/checkpoints/9 I0416 20:12:35.600187 124151285155392 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 56.958456s. I0416 20:12:35.600388 124151295641152 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0416 20:12:35.600494 124151295641152 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save. I0416 20:12:35.600561 124151295641152 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0416 20:12:35.600612 124151295641152 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0416 20:12:35.600772 124264621628544 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 20:12:35.600920 124264621628544 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0416 20:12:35.601629 124264621628544 metric_logger.py:185] completed step: 9, seconds: 0.117, TFLOP/s/device: 115.723, Tokens/s/device: 17442.999, 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