2026-04-23 01:49:46.816374: E external/local_xla/xla/stream_executor/cuda/cuda_fft.cc:467] Unable to register cuFFT factory: Attempting to register factory for plugin cuFFT when one has already been registered WARNING: All log messages before absl::InitializeLog() is called are written to STDERR E0000 00:00:1776908986.829698 2288755 cuda_dnn.cc:8579] Unable to register cuDNN factory: Attempting to register factory for plugin cuDNN when one has already been registered E0000 00:00:1776908986.833538 2288755 cuda_blas.cc:1407] Unable to register cuBLAS factory: Attempting to register factory for plugin cuBLAS when one has already been registered W0000 00:00:1776908986.845030 2288755 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once. W0000 00:00:1776908986.845058 2288755 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once. W0000 00:00:1776908986.845060 2288755 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once. W0000 00:00:1776908986.845061 2288755 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once. Unrecognized keys in `rope_scaling` for 'rope_type'='yarn': {'rope_theta'} `rope_scaling`'s factor field must be a float >= 1, got 40 `rope_scaling`'s beta_fast field must be a float, got 32 `rope_scaling`'s beta_slow field must be a float, got 1 Unrecognized keys in `rope_scaling` for 'rope_type'='yarn': {'rope_theta'} Unrecognized keys in `rope_scaling` for 'rope_type'='yarn': {'rope_theta'} Unrecognized keys in `rope_scaling` for 'rope_type'='yarn': {'rope_theta'} 2026-04-23 01:49:50.516067: 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) I0423 01:49:50.651506 140396201609024 max_utils.py:238] Skipping jax distributed system due to skip_jax_distributed_system=True flag. I0423 01:50:47.189258 140396201609024 max_utils.py:800] System Information: Jax Version: 0.8.1 I0423 01:50:47.189526 140396201609024 max_utils.py:801] System Information: Jaxlib Version: 0.8.1 I0423 01:50:47.189577 140396201609024 max_utils.py:802] System Information: Jax Backend: PJRT C API TFRT TPU v6 lite Built on Nov 12 2025 14:16:36 (1762985796) cl/831091709 I0423 01:50:47.189606 140396201609024 train_utils.py:348] WARNING: 'dataset_path' might be pointing your local file system I0423 01:50:47.189772 140396201609024 train.py:703] [DECOUPLED NO-OP] skipping cloud diagnostics wrapper. I0423 01:50:47.840390 140396201609024 maxtext_utils.py:1604] Num_devices: 8, shape (1, 1, 1, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0423 01:50:47.840652 140396201609024 checkpointing.py:677] Setting up checkpoint logger... I0423 01:50:47.840696 140396201609024 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True I0423 01:50:47.840732 140396201609024 pytree_checkpoint_handler.py:577] save_device_host_concurrent_bytes=None I0423 01:50:47.841173 140396201609024 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 0x7fb042bb2bd0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0423 01:50:50.253892 140396201609024 checkpointing.py:265] Enabling policy for fixed interval checkpointing. I0423 01:50:50.254294 140396201609024 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 0x7fae7175deb0>}, handler_registry=None I0423 01:50:50.254540 140396201609024 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7fae7175deb0>` 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`. I0423 01:50:50.254581 140396201609024 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7fae7175d9a0>` 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`. I0423 01:50:50.254612 140396201609024 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 0x7fae7175deb0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7fae7175deb0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7fae7175d9a0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7fae7175d9a0>}). I0423 01:50:50.254894 140396201609024 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.28 I0423 01:50:50.254945 140396201609024 async_checkpointer.py:177] [process=0][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>.<lambda> at 0x7fae71780900> timeout: 600 secs and primary_host=0 for async checkpoint writes I0423 01:50:50.379967 140396201609024 checkpoint_manager.py:1788] Found 0 checkpoint steps in gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints I0423 01:50:50.380229 140396201609024 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_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7fae7175e030> I0423 01:50:50.380507 140396201609024 checkpointing.py:301] Checkpoint manager created! I0423 01:50:50.459016 140396201609024 dataset_info.py:707] Load dataset info from tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0 I0423 01:50:50.461922 140396201609024 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. I0423 01:50:50.522352 140396201609024 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 I0423 01:50:50.545254 140396201609024 tokenizer.py:245] Tokenizer path: src/maxtext/assets/tokenizers/tokenizer.llama2 I0423 01:50:50.545318 140396201609024 tokenizer.py:187] Loading sentencepiece tokenizer: src/maxtext/assets/tokenizers/tokenizer.llama2 I0423 01:50:51.157320 140396201609024 nnx_wrappers.py:437] Unknown Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0423 01:50:51.157424 140396201609024 nnx_wrappers.py:437] Unknown Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0423 01:50:51.466161 140396201609024 attentions.py:1088] attentions/inputs_q Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0423 01:50:51.466248 140396201609024 attentions.py:1088] attentions/inputs_q Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0423 01:50:51.479146 140396201609024 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0423 01:50:51.479197 140396201609024 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0423 01:50:51.498500 140396201609024 attentions.py:1154] attentions/query Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0423 01:50:51.498559 140396201609024 attentions.py:1154] attentions/query Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0423 01:50:51.511423 140396201609024 attentions.py:1155] attentions/key Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0423 01:50:51.511475 140396201609024 attentions.py:1155] attentions/key Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0423 01:50:51.524270 140396201609024 attentions.py:1156] attentions/value Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0423 01:50:51.524322 140396201609024 attentions.py:1156] attentions/value Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0423 01:50:51.544387 140396201609024 attentions.py:1198] attentions/out Logical: bfloat16[8,2048,16,128]..................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0423 01:50:51.544449 140396201609024 attentions.py:1198] attentions/out Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0423 01:50:51.560561 140396201609024 linears.py:525] linears/x Logical: bfloat16[8,2048,7168]....................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0423 01:50:51.560621 140396201609024 linears.py:525] linears/x Physical: bfloat16[8,2048,7168]....................................... ('fsdp', None, None). I0423 01:50:51.715637 140396201609024 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint I0423 01:50:51.715741 140396201609024 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint. [DECOUPLED NO-OP] gcs_storage: using stubs. [DECOUPLED NO-OP] mldiagnostics: using stub. [DECOUPLED NO-OP] mldiagnostics: using stub. [DECOUPLED NO-OP] mldiagnostics: using stub. [DECOUPLED NO-OP] workload_monitor: using stub. [DECOUPLED NO-OP] vertex_tensorboard: using stub. fsdp: 8 I0423 01:50:52.307518 140396201609024 maxtext_utils.py:1707] params/params/decoder/decoder_norm/scale Shape: float32[2048] Logical: PartitionSpec('norm',) Physical: (None,) I0423 01:50:52.307633 140396201609024 maxtext_utils.py:1707] params/params/decoder/layers/mlp/wi_0/kernel Shape: float32[2048,16,7168] Logical: PartitionSpec('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0423 01:50:52.307676 140396201609024 maxtext_utils.py:1707] params/params/decoder/layers/mlp/wi_1/kernel Shape: float32[2048,16,7168] Logical: PartitionSpec('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0423 01:50:52.307723 140396201609024 maxtext_utils.py:1707] params/params/decoder/layers/mlp/wo/kernel Shape: float32[7168,16,2048] Logical: PartitionSpec('mlp', 'layers', 'embed') Physical: (None, None, 'fsdp') I0423 01:50:52.307764 140396201609024 maxtext_utils.py:1707] params/params/decoder/layers/post_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: PartitionSpec('norm', 'layers') Physical: (None, None) I0423 01:50:52.307792 140396201609024 maxtext_utils.py:1707] params/params/decoder/layers/pre_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: PartitionSpec('norm', 'layers') Physical: (None, None) I0423 01:50:52.307832 140396201609024 maxtext_utils.py:1707] params/params/decoder/layers/self_attention/key/kernel Shape: float32[2048,16,16,128] Logical: PartitionSpec('embed', 'layers', 'kv_heads', 'kv_head_dim') Physical: ('fsdp', None, None, None) I0423 01:50:52.307873 140396201609024 maxtext_utils.py:1707] params/params/decoder/layers/self_attention/out/kernel Shape: float32[16,16,128,2048] Logical: PartitionSpec('heads', 'layers', 'kv', 'embed') Physical: (None, None, None, 'fsdp') I0423 01:50:52.307903 140396201609024 maxtext_utils.py:1707] params/params/decoder/layers/self_attention/query/kernel Shape: float32[2048,16,16,128] Logical: PartitionSpec('embed', 'layers', 'q_heads', 'kv') Physical: ('fsdp', None, None, None) I0423 01:50:52.307931 140396201609024 maxtext_utils.py:1707] params/params/decoder/layers/self_attention/value/kernel Shape: float32[2048,16,16,128] Logical: PartitionSpec('embed', 'layers', 'kv_heads', 'kv_head_dim') Physical: ('fsdp', None, None, None) I0423 01:50:52.307966 140396201609024 maxtext_utils.py:1707] params/params/decoder/logits_dense/kernel Shape: float32[2048,32000] Logical: PartitionSpec('embed_vocab', 'vocab') Physical: ('fsdp', None) I0423 01:50:52.308008 140396201609024 maxtext_utils.py:1707] params/params/token_embedder/embedding Shape: float32[32000,2048] Logical: PartitionSpec('vocab', 'embed_vocab') Physical: (None, 'fsdp') I0423 01:50:52.988283 140396201609024 train.py:155] train/xent Logical: float32[8,2048]............................................. ('activation_embed_and_logits_batch', 'activation_length'). I0423 01:50:52.988376 140396201609024 train.py:155] train/xent Physical: float32[8,2048]............................................. ('fsdp', None). I0423 01:50:53.000474 140396201609024 train.py:162] train/z_loss Logical: float32[8,2048]............................................. ('activation_embed_and_logits_batch', 'activation_length'). I0423 01:50:53.000526 140396201609024 train.py:162] train/z_loss Physical: float32[8,2048]............................................. ('fsdp', None). I0423 01:50:53.797791 140396201609024 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. I0423 01:50:53.798357 140396201609024 max_utils.py:194] tensorboardX not available; using no-op SummaryWriter. I0423 01:50:53.798507 140396201609024 metric_logger.py:301] number parameters: 1.104 billion I0423 01:50:58.047764 140396201609024 checkpointing.py:772] Waiting for step 0 to finish before checkpoint... I0423 01:50:58.169151 140396201609024 checkpointing.py:776] Waited 0.12136673927307129 seconds for step 0 to finish before starting checkpointing. I0423 01:50:58.169872 140396201609024 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0423 01:50:58.170060 140396201609024 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 0 I0423 01:50:58.170469 140396201609024 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/0. I0423 01:50:58.253774 140396201609024 signaling_client.py:373] Using ThreadSafeKeyValueSignalingClient I0423 01:50:58.336469 140270532298304 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/0 I0423 01:50:58.355544 140396201609024 jax_array_handlers.py:347] Scheduling D2H of 39 prioritized jax.Array. I0423 01:50:58.355647 140396201609024 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 I0423 01:50:59.128618 140270521812544 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/0/items I0423 01:50:59.251954 140270372914752 checkpoint.py:188] Wrote Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776909059024271368, 'commit_timestamp_nsecs': None, 'custom_metadata': {}}, json={"item_handlers": null, "metrics": {}, "performance_metrics": {}, "init_timestamp_nsecs": 1776909059024271368, "commit_timestamp_nsecs": null, "custom_metadata": {}} to gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/0/_CHECKPOINT_METADATA I0423 01:50:59.421685 140396201609024 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 1.066571s I0423 01:50:59.422162 140396201609024 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 10.572 GiB/s (total gbytes: 12.3 GiB) (time elapsed: a second) (per-host) I0423 01:50:59.422227 140396201609024 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 1.167364s (batch_requests_ready=0.096697s, total_serialization_initiated=1.070290s, others=0.000377s) I0423 01:50:59.422290 140396201609024 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 1.167950s (all_items=0.000020s, per_item={'items': '0.00002027'}, temp_paths=1.167930) I0423 01:50:59.423375 140270085604928 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0423 01:50:59.423478 140396201609024 async_checkpointer.py:561] Finished blocking save. Time taken: 1.253375s. Continuing background save to gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/0. I0423 01:50:59.423671 140396201609024 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0423 01:50:59.423846 140270542784064 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0423 01:50:59.423957 140396201609024 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776909058.1698592, 'wait_for_prev_duration_secs': 4.363059997558594e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776909058.1700835, 'checkpointer_blocking_duration_secs': 1.253509521484375, 'get_old_steps_start_time': 1776909059.4236095, 'get_old_steps_duration_secs': 2.7179718017578125e-05, 'checkpoint_manager_blocking_start_time': 1776909058.169776, 'checkpoint_manager_blocking_duration_secs': 1.254154920578003} I0423 01:50:59.424094 140396201609024 checkpointing.py:408] Started an asynchronous checkpoint save for step 0 I0423 01:50:59.424136 140396201609024 max_utils.py:750] Memstats: After params initialized: I0423 01:50:59.424213 140396201609024 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_0(process=0,(0,0,0,0)) I0423 01:50:59.424247 140396201609024 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_1(process=0,(1,0,0,0)) I0423 01:50:59.424268 140396201609024 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_2(process=0,(0,1,0,0)) I0423 01:50:59.424288 140396201609024 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_3(process=0,(1,1,0,0)) I0423 01:50:59.424309 140396201609024 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_4(process=0,(0,2,0,0)) I0423 01:50:59.424327 140396201609024 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_5(process=0,(1,2,0,0)) I0423 01:50:59.424346 140396201609024 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_6(process=0,(0,3,0,0)) I0423 01:50:59.424364 140396201609024 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_7(process=0,(1,3,0,0)) I0423 01:50:59.600053 2291297 google_auth_provider.cc:149] Using credentials at ~/.config/gcloud/application_default_credentials.json I0423 01:50:59.600118 2291297 google_auth_provider.cc:156] Using OAuth2 AuthProvider I0423 01:50:59.791105 140396201609024 metric_logger.py:196] completed step: 0, seconds: 4.249, TFLOP/s/device: 3.198, Tokens/s/device: 482.026, total_weights: 13328, loss: 10.828, lm_loss: 10.828, perplexity: 50404.086 I0423 01:50:59.792130 140396201609024 metric_logger.py:281] To see full metrics 'tensorboard --logdir=gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/tensorboard/' I0423 01:50:59.907306 140396201609024 metric_logger.py:196] completed step: 1, seconds: 1.741, TFLOP/s/device: 7.804, Tokens/s/device: 1176.233, total_weights: 12332, loss: 10.828, lm_loss: 10.828, perplexity: 50391.758 I0423 01:51:00.025157 140396201609024 metric_logger.py:196] completed step: 2, seconds: 0.011, TFLOP/s/device: 1252.847, Tokens/s/device: 188842.785, total_weights: 15161, loss: 9.823, lm_loss: 9.823, perplexity: 18444.867 I0423 01:51:00.142662 140396201609024 metric_logger.py:196] completed step: 3, seconds: 0.117, TFLOP/s/device: 115.726, Tokens/s/device: 17443.445, total_weights: 13327, loss: 9.405, lm_loss: 9.405, perplexity: 12149.331 I0423 01:51:00.372190 140270362428992 array_metadata_store.py:203] [process=0][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/0/items/array_metadatas/process_0 I0423 01:51:16.795943 140396201609024 metric_logger.py:196] completed step: 4, seconds: 0.118, TFLOP/s/device: 115.463, Tokens/s/device: 17403.867, total_weights: 11939, loss: 9.045, lm_loss: 9.045, perplexity: 8471.842 I0423 01:51:16.876913 140396201609024 metric_logger.py:196] completed step: 5, seconds: 0.118, TFLOP/s/device: 115.528, Tokens/s/device: 17413.633, total_weights: 15502, loss: 8.953, lm_loss: 8.953, perplexity: 7728.546 I0423 01:51:17.061478 140396201609024 metric_logger.py:196] completed step: 6, seconds: 16.707, TFLOP/s/device: 0.813, Tokens/s/device: 122.584, total_weights: 13864, loss: 8.775, lm_loss: 8.775, perplexity: 6468.536 I0423 01:51:17.641422 140396201609024 metric_logger.py:196] completed step: 7, seconds: 0.162, TFLOP/s/device: 84.081, Tokens/s/device: 12673.659, total_weights: 12988, loss: 8.688, lm_loss: 8.688, perplexity: 5928.887 I0423 01:51:18.547510 140396201609024 metric_logger.py:196] completed step: 8, seconds: 0.618, TFLOP/s/device: 21.982, Tokens/s/device: 3313.348, total_weights: 13820, loss: 8.740, lm_loss: 8.740, perplexity: 6250.123 I0423 01:51:18.720405 140396201609024 checkpointing.py:772] Waiting for step 9 to finish before checkpoint... I0423 01:51:18.721615 140396201609024 checkpointing.py:776] Waited 0.0015184879302978516 seconds for step 9 to finish before starting checkpointing. I0423 01:51:18.721949 140396201609024 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0423 01:52:03.717711 140270511326784 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 64.120517s (commit=63.668144s, array_metadata_write=0.452373s) I0423 01:52:03.718940 140270085604928 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 193.034 MiB/s (total gbytes: 12.3 GiB) (time elapsed: a minute) (per-host) I0423 01:52:03.719069 140270085604928 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 64.295540s. I0423 01:52:03.993597 140270085604928 checkpoint.py:228] Read Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776909059024271368, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} from gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/0/_CHECKPOINT_METADATA I0423 01:52:04.202832 140270085604928 array_metadata_store.py:367] [process=0][thread=async_save] Skipped cross-host ArrayMetadata validation because only one process is found: process_index=0. I0423 01:52:04.404924 140270372914752 checkpoint.py:247] Updated Metadata={'item_handlers': {'items': 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler'}, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776909059024271368, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} to gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/0/_CHECKPOINT_METADATA I0423 01:52:04.555679 140270085604928 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389). I0423 01:52:04.555867 140270085604928 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.526663s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/0/items I0423 01:52:04.556675 140270085604928 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/0/items I0423 01:52:04.784741 140270085604928 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/0 I0423 01:52:05.460217 140270085604928 atomicity.py:794] [process=0][thread=async_save] Finished saving checkpoint (finalized tmp dir) to `gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/0`. I0423 01:52:05.461009 140270085604928 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 67.290913s. directory=gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/0 I0423 01:52:05.461101 140270085604928 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 66.037576s. I0423 01:52:05.461366 140270542784064 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0423 01:52:05.461504 140270542784064 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save. I0423 01:52:05.461561 140270542784064 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0423 01:52:05.461607 140270542784064 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0423 01:52:05.461728 140396201609024 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. W0423 01:52:05.461881 140396201609024 checkpoint_manager.py:1441] Waiting for previous save to complete took 46.739946 seconds. If this number is high, consider checkpointing less frequently. I0423 01:52:05.462995 140396201609024 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 9 I0423 01:52:05.463304 140396201609024 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/9. I0423 01:52:05.631842 140396201609024 jax_array_handlers.py:347] Scheduling D2H of 39 prioritized jax.Array. I0423 01:52:05.631939 140396201609024 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 I0423 01:52:05.633368 140270085604928 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/9 I0423 01:52:06.311432 140269701826112 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/9/items I0423 01:52:07.358612 140396201609024 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 1.727173s I0423 01:52:07.363267 140396201609024 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 6.791 GiB/s (total gbytes: 12.3 GiB) (time elapsed: a second) (per-host) I0423 01:52:07.363340 140396201609024 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 1.817286s (batch_requests_ready=0.082388s, total_serialization_initiated=1.730357s, others=0.004541s) I0423 01:52:07.363421 140396201609024 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 1.817864s (all_items=0.000024s, per_item={'items': '0.00002384'}, temp_paths=1.817840) I0423 01:52:07.365296 140270542784064 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0423 01:52:07.365382 140396201609024 async_checkpointer.py:561] Finished blocking save. Time taken: 1.902343s. Continuing background save to gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/9. I0423 01:52:07.365578 140396201609024 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0423 01:52:07.365757 140270085604928 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0423 01:52:07.365867 140396201609024 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776909078.7219083, 'wait_for_prev_duration_secs': 46.739946126937866, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776909125.4630203, 'checkpointer_blocking_duration_secs': 1.9024693965911865, 'get_old_steps_start_time': 1776909127.365508, 'get_old_steps_duration_secs': 2.956390380859375e-05, 'checkpoint_manager_blocking_start_time': 1776909078.7218618, 'checkpoint_manager_blocking_duration_secs': 48.643977880477905} I0423 01:52:07.365986 140396201609024 checkpointing.py:408] Started an asynchronous checkpoint save for step 9 I0423 01:52:07.366020 140396201609024 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0423 01:52:08.075221 140270408566336 array_metadata_store.py:203] [process=0][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/9/items/array_metadatas/process_0 I0423 01:52:38.895236 140269701826112 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 31.531313s (commit=31.079902s, array_metadata_write=0.451411s) I0423 01:52:38.896235 140270542784064 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 378.912 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 33 seconds) (per-host) I0423 01:52:38.896291 140270542784064 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 31.530865s. I0423 01:52:39.381747 140270542784064 array_metadata_store.py:367] [process=0][thread=async_save] Skipped cross-host ArrayMetadata validation because only one process is found: process_index=0. I0423 01:52:39.776139 140270542784064 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389). I0423 01:52:39.776396 140270542784064 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.591598s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/9/items I0423 01:52:39.777334 140270542784064 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/9/items I0423 01:52:40.013519 140270542784064 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/9 I0423 01:52:40.722373 140270542784064 atomicity.py:794] [process=0][thread=async_save] Finished saving checkpoint (finalized tmp dir) to `gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/9`. I0423 01:52:40.723160 140270542784064 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 35.260126s. directory=gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_10_shardy_true/checkpoints/9 I0423 01:52:40.723246 140270542784064 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 33.357821s. I0423 01:52:40.723453 140270085604928 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0423 01:52:40.723581 140270085604928 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save. I0423 01:52:40.723639 140270085604928 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0423 01:52:40.723682 140270085604928 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0423 01:52:40.723852 140396201609024 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. I0423 01:52:40.724006 140396201609024 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0423 01:52:40.725008 140396201609024 metric_logger.py:196] completed step: 9, seconds: 0.907, TFLOP/s/device: 14.977, Tokens/s/device: 2257.486, total_weights: 12300, loss: 8.710, lm_loss: 8.710, perplexity: 6065.008 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops