MaxView

2026-04-23 01:27:26.096220: 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 00:00:1776907646.109176 2262575 cuda_dnn.cc:8579] Unable to register cuDNN factory: Attempting to register factory for plugin cuDNN when one has already been registered
E0000 00:00:1776907646.112977 2262575 cuda_blas.cc:1407] Unable to register cuBLAS factory: Attempting to register factory for plugin cuBLAS when one has already been registered
W0000 00:00:1776907646.124463 2262575 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once.
W0000 00:00:1776907646.124477 2262575 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once.
W0000 00:00:1776907646.124479 2262575 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once.
W0000 00:00:1776907646.124481 2262575 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 01:27:29.788008: 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 01:27:29.923590 133238938142528 max_utils.py:238] Skipping jax distributed system due to skip_jax_distributed_system=True flag.
I0423 01:28:00.258003 133238938142528 max_utils.py:800] System Information: Jax Version: 0.8.1
I0423 01:28:00.258275 133238938142528 max_utils.py:801] System Information: Jaxlib Version: 0.8.1
I0423 01:28:00.258324 133238938142528 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 01:28:00.258356 133238938142528 train_utils.py:348] WARNING: 'dataset_path' might be pointing your local file system
I0423 01:28:00.258531 133238938142528 train.py:703] [DECOUPLED NO-OP] skipping cloud diagnostics wrapper.
I0423 01:28:00.911978 133238938142528 maxtext_utils.py:1604] Num_devices: 8, shape (1, 1, 1, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0423 01:28:00.912259 133238938142528 checkpointing.py:677] Setting up checkpoint logger...
I0423 01:28:00.912305 133238938142528 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True
I0423 01:28:00.912342 133238938142528 pytree_checkpoint_handler.py:577] save_device_host_concurrent_bytes=None
I0423 01:28:00.912761 133238938142528 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 0x792dd49aeed0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0423 01:28:03.270308 133238938142528 checkpointing.py:265] Enabling policy for fixed interval checkpointing.
I0423 01:28:03.270686 133238938142528 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 0x792c755fc3e0>}, handler_registry=None
I0423 01:28:03.270915 133238938142528 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x792c755fc3e0>` 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 01:28:03.270956 133238938142528 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x792bf8f21a00>` 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 01:28:03.270986 133238938142528 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 0x792c755fc3e0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x792c755fc3e0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x792bf8f21a00>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x792bf8f21a00>}).
I0423 01:28:03.271279 133238938142528 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.28
I0423 01:28:03.271332 133238938142528 async_checkpointer.py:177] [process=0][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>.<lambda> at 0x792bef718720> timeout: 600 secs and primary_host=0 for async checkpoint writes
I0423 01:28:03.393993 133238938142528 checkpoint_manager.py:1788] Found 0 checkpoint steps in gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/checkpoints
I0423 01:28:03.394267 133238938142528 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_03_dropout/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x792bef709be0>
I0423 01:28:03.394546 133238938142528 checkpointing.py:301] Checkpoint manager created!
I0423 01:28:03.472158 133238938142528 dataset_info.py:707] Load dataset info from tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0
I0423 01:28:03.475056 133238938142528 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 01:28:03.535557 133238938142528 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 01:28:03.557880 133238938142528 tokenizer.py:245] Tokenizer path: src/maxtext/assets/tokenizers/tokenizer.llama2
I0423 01:28:03.557945 133238938142528 tokenizer.py:187] Loading sentencepiece tokenizer: src/maxtext/assets/tokenizers/tokenizer.llama2
I0423 01:28:04.171119 133238938142528 nnx_wrappers.py:437] Unknown Logical: bfloat16[8,128,2048]........................................ ('activation_batch', 'activation_norm_length', 'activation_embed').
I0423 01:28:04.171222 133238938142528 nnx_wrappers.py:437] Unknown Physical: bfloat16[8,128,2048]........................................ ('fsdp', None, None).
I0423 01:28:04.474594 133238938142528 attentions.py:1088] attentions/inputs_q Logical: bfloat16[8,128,2048]........................................ ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0423 01:28:04.474684 133238938142528 attentions.py:1088] attentions/inputs_q Physical: bfloat16[8,128,2048]........................................ ('fsdp', None, None).
I0423 01:28:04.487594 133238938142528 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[8,128,2048]........................................ ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0423 01:28:04.487658 133238938142528 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[8,128,2048]........................................ ('fsdp', None, None).
I0423 01:28:04.506974 133238938142528 attentions.py:1154] attentions/query Logical: bfloat16[8,128,16,128]...................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0423 01:28:04.507033 133238938142528 attentions.py:1154] attentions/query Physical: bfloat16[8,128,16,128]...................................... ('fsdp', None, None, None).
I0423 01:28:04.520026 133238938142528 attentions.py:1155] attentions/key Logical: bfloat16[8,128,16,128]...................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0423 01:28:04.520089 133238938142528 attentions.py:1155] attentions/key Physical: bfloat16[8,128,16,128]...................................... ('fsdp', None, None, None).
I0423 01:28:04.532970 133238938142528 attentions.py:1156] attentions/value Logical: bfloat16[8,128,16,128]...................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0423 01:28:04.533021 133238938142528 attentions.py:1156] attentions/value Physical: bfloat16[8,128,16,128]...................................... ('fsdp', None, None, None).
I0423 01:28:04.553250 133238938142528 attentions.py:1198] attentions/out Logical: bfloat16[8,128,16,128]...................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0423 01:28:04.553316 133238938142528 attentions.py:1198] attentions/out Physical: bfloat16[8,128,16,128]...................................... ('fsdp', None, None, None).
I0423 01:28:04.575944 133238938142528 linears.py:525] linears/x Logical: bfloat16[8,128,7168]........................................ ('activation_batch', 'activation_length', 'activation_mlp').
I0423 01:28:04.576004 133238938142528 linears.py:525] linears/x Physical: bfloat16[8,128,7168]........................................ ('fsdp', None, None).
I0423 01:28:04.738426 133238938142528 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint
I0423 01:28:04.738533 133238938142528 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 01:28:05.328166 133238938142528 maxtext_utils.py:1707]  params/params/decoder/decoder_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0423 01:28:05.328282 133238938142528 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 01:28:05.328325 133238938142528 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 01:28:05.328371 133238938142528 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 01:28:05.328412 133238938142528 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 01:28:05.328442 133238938142528 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 01:28:05.328482 133238938142528 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 01:28:05.328524 133238938142528 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 01:28:05.328554 133238938142528 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 01:28:05.328582 133238938142528 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 01:28:05.328620 133238938142528 maxtext_utils.py:1707]  params/params/decoder/logits_dense/kernel
    Shape:     float32[2048,32000]
    Logical:   PartitionSpec('embed_vocab', 'vocab')
    Physical:  ('fsdp', None)
I0423 01:28:05.328655 133238938142528 maxtext_utils.py:1707]  params/params/token_embedder/embedding
    Shape:     float32[32000,2048]
    Logical:   PartitionSpec('vocab', 'embed_vocab')
    Physical:  (None, 'fsdp')

I0423 01:28:06.036183 133238938142528 train.py:155] train/xent Logical: float32[8,128].............................................. ('activation_embed_and_logits_batch', 'activation_length').
I0423 01:28:06.036275 133238938142528 train.py:155] train/xent Physical: float32[8,128].............................................. ('fsdp', None).
I0423 01:28:06.049311 133238938142528 train.py:162] train/z_loss Logical: float32[8,128].............................................. ('activation_embed_and_logits_batch', 'activation_length').
I0423 01:28:06.049366 133238938142528 train.py:162] train/z_loss Physical: float32[8,128].............................................. ('fsdp', None).
I0423 01:28:06.678398 133238938142528 max_utils.py:791] Total memory size: 2.5 GB, Output size: 1.5 GB, Temp size: 1.0 GB, Argument size: 1.5 GB, Host temp size: 0.0 GB.
I0423 01:28:06.678919 133238938142528 max_utils.py:194] tensorboardX not available; using no-op SummaryWriter.
I0423 01:28:06.679088 133238938142528 metric_logger.py:301] number parameters: 1.104 billion
I0423 01:28:10.261005 133238938142528 checkpointing.py:772] Waiting for step 0 to finish before checkpoint...
I0423 01:28:10.327018 133238938142528 checkpointing.py:776] Waited 0.06599998474121094 seconds for step 0 to finish before starting checkpointing.
I0423 01:28:10.331497 133238938142528 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0423 01:28:10.331654 133238938142528 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 0
I0423 01:28:10.332067 133238938142528 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/checkpoints/0.
I0423 01:28:10.422252 133238938142528 signaling_client.py:373] Using ThreadSafeKeyValueSignalingClient
I0423 01:28:10.519347 133238938142528 jax_array_handlers.py:347] Scheduling D2H of 39 prioritized jax.Array.
I0423 01:28:10.519440 133238938142528 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 01:28:10.525150 133113216763456 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/checkpoints/0
I0423 01:28:11.296405 133113206277696 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/checkpoints/0/items
I0423 01:28:11.456232 133112992368192 checkpoint.py:188] Wrote Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776907691192947320, 'commit_timestamp_nsecs': None, 'custom_metadata': {}}, json={"item_handlers": null, "metrics": {}, "performance_metrics": {}, "init_timestamp_nsecs": 1776907691192947320, "commit_timestamp_nsecs": null, "custom_metadata": {}} to gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/checkpoints/0/_CHECKPOINT_METADATA
I0423 01:28:11.769197 2265155 google_auth_provider.cc:149] Using credentials at ~/.config/gcloud/application_default_credentials.json
I0423 01:28:11.769253 2265155 google_auth_provider.cc:156] Using OAuth2 AuthProvider
I0423 01:28:12.531301 133238938142528 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 2.012475s
I0423 01:28:12.536440 133238938142528 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 5.841 GiB/s (total gbytes: 12.3 GiB) (time elapsed: 2 seconds) (per-host)
I0423 01:28:12.536521 133238938142528 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 2.112790s (batch_requests_ready=0.091578s, total_serialization_initiated=2.016209s, others=0.005003s)
I0423 01:28:12.536622 133238938142528 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 2.113771s (all_items=0.000021s, per_item={'items': '0.00002122'}, temp_paths=2.113750)
I0423 01:28:12.538274 133113227249216 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started.
I0423 01:28:12.538406 133238938142528 async_checkpointer.py:561] Finished blocking save. Time taken: 2.206705s. Continuing background save to gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/checkpoints/0.
I0423 01:28:12.538792 133238938142528 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0423 01:28:12.539148 133112463885888 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save.
I0423 01:28:12.539255 133238938142528 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776907690.3314836, 'wait_for_prev_duration_secs': 5.030632019042969e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776907690.3316755, 'checkpointer_blocking_duration_secs': 2.2068731784820557, 'get_old_steps_start_time': 1776907692.5385725, 'get_old_steps_duration_secs': 0.0001266002655029297, 'checkpoint_manager_blocking_start_time': 1776907690.3313985, 'checkpoint_manager_blocking_duration_secs': 2.207822322845459}
I0423 01:28:12.539394 133238938142528 checkpointing.py:408] Started an asynchronous checkpoint save for step 0
I0423 01:28:12.539439 133238938142528 max_utils.py:750] 
Memstats: After params initialized:
I0423 01:28:12.539497 133238938142528 max_utils.py:756] 	Using (GB) 1.56 / 31.25 (4.992000%) on TPU_0(process=0,(0,0,0,0))
I0423 01:28:12.539527 133238938142528 max_utils.py:756] 	Using (GB) 1.56 / 31.25 (4.992000%) on TPU_1(process=0,(1,0,0,0))
I0423 01:28:12.539550 133238938142528 max_utils.py:756] 	Using (GB) 1.56 / 31.25 (4.992000%) on TPU_2(process=0,(0,1,0,0))
I0423 01:28:12.539569 133238938142528 max_utils.py:756] 	Using (GB) 1.56 / 31.25 (4.992000%) on TPU_3(process=0,(1,1,0,0))
I0423 01:28:12.539588 133238938142528 max_utils.py:756] 	Using (GB) 1.56 / 31.25 (4.992000%) on TPU_4(process=0,(0,2,0,0))
I0423 01:28:12.539606 133238938142528 max_utils.py:756] 	Using (GB) 1.56 / 31.25 (4.992000%) on TPU_5(process=0,(1,2,0,0))
I0423 01:28:12.539624 133238938142528 max_utils.py:756] 	Using (GB) 1.56 / 31.25 (4.992000%) on TPU_6(process=0,(0,3,0,0))
I0423 01:28:12.539642 133238938142528 max_utils.py:756] 	Using (GB) 1.56 / 31.25 (4.992000%) on TPU_7(process=0,(1,3,0,0))
I0423 01:28:12.913697 133238938142528 metric_logger.py:196] completed step: 0, seconds: 3.581, TFLOP/s/device: 0.224, Tokens/s/device: 35.740, total_weights: 963, loss: 10.834, lm_loss: 10.834, perplexity: 50699.652
I0423 01:28:12.914754 133238938142528 metric_logger.py:281] To see full metrics 'tensorboard --logdir=gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/tensorboard/'
I0423 01:28:12.975528 133238938142528 metric_logger.py:196] completed step: 1, seconds: 2.651, TFLOP/s/device: 0.302, Tokens/s/device: 48.292, total_weights: 945, loss: 10.747, lm_loss: 10.747, perplexity: 46511.984
I0423 01:28:13.039593 133238938142528 metric_logger.py:196] completed step: 2, seconds: 0.011, TFLOP/s/device: 75.505, Tokens/s/device: 12067.503, total_weights: 962, loss: 10.247, lm_loss: 10.247, perplexity: 28185.607
I0423 01:28:13.103773 133238938142528 metric_logger.py:196] completed step: 3, seconds: 0.063, TFLOP/s/device: 12.799, Tokens/s/device: 2045.611, total_weights: 975, loss: 9.829, lm_loss: 9.829, perplexity: 18562.363
I0423 01:28:22.680452 133113046894144 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_03_dropout/checkpoints/0/items/array_metadatas/process_0
I0423 01:28:22.680761 133238938142528 metric_logger.py:196] completed step: 4, seconds: 0.065, TFLOP/s/device: 12.358, Tokens/s/device: 1975.095, total_weights: 962, loss: 9.393, lm_loss: 9.393, perplexity: 11999.676
I0423 01:28:22.708369 133238938142528 metric_logger.py:196] completed step: 5, seconds: 0.063, TFLOP/s/device: 12.643, Tokens/s/device: 2020.680, total_weights: 958, loss: 9.249, lm_loss: 9.249, perplexity: 10399.042
I0423 01:28:22.771570 133238938142528 metric_logger.py:196] completed step: 6, seconds: 9.594, TFLOP/s/device: 0.083, Tokens/s/device: 13.342, total_weights: 930, loss: 9.424, lm_loss: 9.424, perplexity: 12377.827
I0423 01:28:22.836227 133238938142528 metric_logger.py:196] completed step: 7, seconds: 0.008, TFLOP/s/device: 96.783, Tokens/s/device: 15468.278, total_weights: 935, loss: 9.317, lm_loss: 9.317, perplexity: 11127.848
I0423 01:28:22.903536 133238938142528 metric_logger.py:196] completed step: 8, seconds: 0.066, TFLOP/s/device: 12.222, Tokens/s/device: 1953.334, total_weights: 930, loss: 9.479, lm_loss: 9.479, perplexity: 13077.248
I0423 01:28:22.971541 133238938142528 checkpointing.py:772] Waiting for step 9 to finish before checkpoint...
I0423 01:28:22.972791 133238938142528 checkpointing.py:776] Waited 0.0012698173522949219 seconds for step 9 to finish before starting checkpointing.
I0423 01:28:22.973155 133238938142528 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0423 01:28:45.230241 133112598103616 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 32.692880s (commit=32.227696s, array_metadata_write=0.465183s)
I0423 01:28:45.231379 133113227249216 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 363.047 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 34 seconds) (per-host)
I0423 01:28:45.231504 133113227249216 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 32.693033s.
I0423 01:28:45.504996 133113227249216 checkpoint.py:228] Read Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776907691192947320, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} from gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/checkpoints/0/_CHECKPOINT_METADATA
I0423 01:28:45.716781 133113227249216 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 01:28:45.916239 133112992368192 checkpoint.py:247] Updated Metadata={'item_handlers': {'items': 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler'}, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776907691192947320, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} to gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/checkpoints/0/_CHECKPOINT_METADATA
I0423 01:28:46.094002 133113227249216 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389).
I0423 01:28:46.094282 133113227249216 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.548079s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/checkpoints/0/items
I0423 01:28:46.095083 133113227249216 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/checkpoints/0/items
I0423 01:28:46.327185 133113227249216 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/checkpoints/0
I0423 01:28:47.018611 133113227249216 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_03_dropout/checkpoints/0`.
I0423 01:28:47.019371 133113227249216 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 36.687680s. directory=gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/checkpoints/0
I0423 01:28:47.019458 133113227249216 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 34.480993s.
I0423 01:28:47.019680 133112463885888 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save.
I0423 01:28:47.019807 133112463885888 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save.
I0423 01:28:47.019879 133112463885888 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0423 01:28:47.019930 133112463885888 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0423 01:28:47.020083 133238938142528 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 01:28:47.020235 133238938142528 checkpoint_manager.py:1441] Waiting for previous save to complete took 24.047094 seconds. If this number is high, consider checkpointing less frequently.
I0423 01:28:47.021552 133238938142528 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 9
I0423 01:28:47.021909 133238938142528 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/checkpoints/9.
I0423 01:28:47.198205 133113227249216 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/checkpoints/9
I0423 01:28:47.198525 133238938142528 jax_array_handlers.py:347] Scheduling D2H of 39 prioritized jax.Array.
I0423 01:28:47.198582 133238938142528 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 01:28:47.870207 133098767386176 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/checkpoints/9/items
I0423 01:28:52.259659 133238938142528 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 5.061751s
I0423 01:28:52.264177 133238938142528 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 2.391 GiB/s (total gbytes: 12.3 GiB) (time elapsed: 5 seconds) (per-host)
I0423 01:28:52.264244 133238938142528 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 5.160915s (batch_requests_ready=0.091412s, total_serialization_initiated=5.065101s, others=0.004403s)
I0423 01:28:52.264407 133238938142528 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 5.161608s (all_items=0.000028s, per_item={'items': '0.00002813'}, temp_paths=5.161580)
I0423 01:28:52.266179 133112463885888 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started.
I0423 01:28:52.266264 133238938142528 async_checkpointer.py:561] Finished blocking save. Time taken: 5.244665s. Continuing background save to gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/checkpoints/9.
I0423 01:28:52.266490 133238938142528 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0423 01:28:52.266690 133101730661952 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save.
I0423 01:28:52.266817 133238938142528 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776907702.973103, 'wait_for_prev_duration_secs': 24.047093868255615, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776907727.0215771, 'checkpointer_blocking_duration_secs': 5.244792222976685, 'get_old_steps_start_time': 1776907732.2663872, 'get_old_steps_duration_secs': 6.318092346191406e-05, 'checkpoint_manager_blocking_start_time': 1776907702.9730396, 'checkpoint_manager_blocking_duration_secs': 29.29375147819519}
I0423 01:28:52.266929 133238938142528 checkpointing.py:408] Started an asynchronous checkpoint save for step 9
I0423 01:28:52.266963 133238938142528 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0423 01:28:52.975386 133222165907008 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_03_dropout/checkpoints/9/items/array_metadatas/process_0
I0423 01:29:31.829413 133107575424576 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 39.564686s (commit=39.092842s, array_metadata_write=0.471844s)
I0423 01:29:31.830594 133112463885888 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 282.530 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 44 seconds) (per-host)
I0423 01:29:31.830650 133112463885888 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 39.564342s.
I0423 01:29:32.295887 133112463885888 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 01:29:32.677115 133112463885888 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389).
I0423 01:29:32.683375 133112463885888 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.557101s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/checkpoints/9/items
I0423 01:29:32.684157 133112463885888 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/checkpoints/9/items
I0423 01:29:32.914032 133112463885888 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/checkpoints/9
I0423 01:29:33.574934 133112463885888 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_03_dropout/checkpoints/9`.
I0423 01:29:33.575670 133112463885888 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 46.554076s. directory=gs://wanglance-maxtext/linen_ckpt_main_20260423_012248/linen_main_20260423_012248_03_dropout/checkpoints/9
I0423 01:29:33.575755 133112463885888 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 41.309447s.
I0423 01:29:33.575951 133101730661952 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save.
I0423 01:29:33.576078 133101730661952 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save.
I0423 01:29:33.576149 133101730661952 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0423 01:29:33.576193 133101730661952 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0423 01:29:33.576376 133238938142528 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 01:29:33.576544 133238938142528 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0423 01:29:33.582769 133238938142528 metric_logger.py:196] completed step: 9, seconds: 0.065, TFLOP/s/device: 12.386, Tokens/s/device: 1979.647, total_weights: 948, loss: 9.141, lm_loss: 9.141, perplexity: 9328.599
Per train step:
 Total TFLOPs: 0.80 
 split as 99.60% learnable weight flops and 0.40% attention flops

2026-04-23 02:48:24.776379: 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 00:00:1776912504.790004 2340898 cuda_dnn.cc:8579] Unable to register cuDNN factory: Attempting to register factory for plugin cuDNN when one has already been registered
E0000 00:00:1776912504.793991 2340898 cuda_blas.cc:1407] Unable to register cuBLAS factory: Attempting to register factory for plugin cuBLAS when one has already been registered
W0000 00:00:1776912504.806497 2340898 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once.
W0000 00:00:1776912504.806512 2340898 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once.
W0000 00:00:1776912504.806513 2340898 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once.
W0000 00:00:1776912504.806515 2340898 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 02:48:28.806416: 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 02:48:28.943241 136225334708032 max_utils.py:238] Skipping jax distributed system due to skip_jax_distributed_system=True flag.
~/maxtext/maxtext_venv/lib/python3.12/site-packages/jax/_src/xla_bridge.py:204: UserWarning: TPU backend initialization is taking more than 60.0 seconds. Did you run your code on all TPU hosts? See https://docs.jax.dev/en/latest/multi_process.html for more information.
  warnings.warn(
I0423 02:49:31.410808 136225334708032 max_utils.py:800] System Information: Jax Version: 0.8.1
I0423 02:49:31.410923 136225334708032 max_utils.py:801] System Information: Jaxlib Version: 0.8.1
I0423 02:49:31.410961 136225334708032 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 02:49:31.410986 136225334708032 train_utils.py:348] WARNING: 'dataset_path' might be pointing your local file system
I0423 02:49:31.411087 136225334708032 train.py:672] [DECOUPLED NO-OP] skipping cloud diagnostics wrapper.
I0423 02:49:32.099333 136225334708032 maxtext_utils.py:1604] Num_devices: 8, shape (1, 1, 1, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0423 02:49:32.099613 136225334708032 checkpointing.py:677] Setting up checkpoint logger...
I0423 02:49:32.099660 136225334708032 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True
I0423 02:49:32.099696 136225334708032 pytree_checkpoint_handler.py:577] save_device_host_concurrent_bytes=None
I0423 02:49:32.100148 136225334708032 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 0x7be5251b2b40>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0423 02:49:34.538018 136225334708032 checkpointing.py:265] Enabling policy for fixed interval checkpointing.
I0423 02:49:34.538389 136225334708032 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 0x7be3c99aa990>}, handler_registry=None
I0423 02:49:34.538616 136225334708032 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7be3c99aa990>` 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 02:49:34.538656 136225334708032 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7be354bb5850>` 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 02:49:34.538686 136225334708032 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 0x7be3c99aa990>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7be3c99aa990>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7be354bb5850>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7be354bb5850>}).
I0423 02:49:34.538982 136225334708032 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.28
I0423 02:49:34.539034 136225334708032 async_checkpointer.py:177] [process=0][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>.<lambda> at 0x7be354be0540> timeout: 600 secs and primary_host=0 for async checkpoint writes
I0423 02:49:34.664746 136225334708032 checkpoint_manager.py:1788] Found 0 checkpoint steps in gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints
I0423 02:49:34.664964 136225334708032 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_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7be354bb5b80>
I0423 02:49:34.665256 136225334708032 checkpointing.py:301] Checkpoint manager created!
I0423 02:49:34.742471 136225334708032 dataset_info.py:707] Load dataset info from tests/assets/local_datasets/c4_en_dataset_minimal/c4/en/3.1.0
I0423 02:49:34.745279 136225334708032 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 02:49:34.805600 136225334708032 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 02:49:34.828406 136225334708032 tokenizer.py:245] Tokenizer path: src/maxtext/assets/tokenizers/tokenizer.llama2
I0423 02:49:34.828467 136225334708032 tokenizer.py:187] Loading sentencepiece tokenizer: src/maxtext/assets/tokenizers/tokenizer.llama2
I0423 02:49:35.437273 136225334708032 nnx_wrappers.py:437] Unknown Logical: bfloat16[8,128,2048]........................................ ('activation_batch', 'activation_norm_length', 'activation_embed').
I0423 02:49:35.437365 136225334708032 nnx_wrappers.py:437] Unknown Physical: bfloat16[8,128,2048]........................................ ('fsdp', None, None).
I0423 02:49:35.737716 136225334708032 attentions.py:1088] attentions/inputs_q Logical: bfloat16[8,128,2048]........................................ ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0423 02:49:35.737799 136225334708032 attentions.py:1088] attentions/inputs_q Physical: bfloat16[8,128,2048]........................................ ('fsdp', None, None).
I0423 02:49:35.750966 136225334708032 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[8,128,2048]........................................ ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0423 02:49:35.751015 136225334708032 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[8,128,2048]........................................ ('fsdp', None, None).
I0423 02:49:35.770506 136225334708032 attentions.py:1154] attentions/query Logical: bfloat16[8,128,16,128]...................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0423 02:49:35.770562 136225334708032 attentions.py:1154] attentions/query Physical: bfloat16[8,128,16,128]...................................... ('fsdp', None, None, None).
I0423 02:49:35.783765 136225334708032 attentions.py:1155] attentions/key Logical: bfloat16[8,128,16,128]...................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0423 02:49:35.783818 136225334708032 attentions.py:1155] attentions/key Physical: bfloat16[8,128,16,128]...................................... ('fsdp', None, None, None).
I0423 02:49:35.796973 136225334708032 attentions.py:1156] attentions/value Logical: bfloat16[8,128,16,128]...................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0423 02:49:35.797022 136225334708032 attentions.py:1156] attentions/value Physical: bfloat16[8,128,16,128]...................................... ('fsdp', None, None, None).
I0423 02:49:35.817364 136225334708032 attentions.py:1198] attentions/out Logical: bfloat16[8,128,16,128]...................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0423 02:49:35.817419 136225334708032 attentions.py:1198] attentions/out Physical: bfloat16[8,128,16,128]...................................... ('fsdp', None, None, None).
I0423 02:49:35.841168 136225334708032 linears.py:525] linears/x Logical: bfloat16[8,128,7168]........................................ ('activation_batch', 'activation_length', 'activation_mlp').
I0423 02:49:35.841222 136225334708032 linears.py:525] linears/x Physical: bfloat16[8,128,7168]........................................ ('fsdp', None, None).
I0423 02:49:36.004789 136225334708032 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint
I0423 02:49:36.004884 136225334708032 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 02:49:36.600853 136225334708032 maxtext_utils.py:1707]  params/params/decoder/decoder_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0423 02:49:36.600966 136225334708032 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 02:49:36.601009 136225334708032 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 02:49:36.601069 136225334708032 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 02:49:36.601113 136225334708032 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 02:49:36.601141 136225334708032 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 02:49:36.601181 136225334708032 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 02:49:36.601223 136225334708032 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 02:49:36.601254 136225334708032 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 02:49:36.601283 136225334708032 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 02:49:36.601320 136225334708032 maxtext_utils.py:1707]  params/params/decoder/logits_dense/kernel
    Shape:     float32[2048,32000]
    Logical:   PartitionSpec('embed_vocab', 'vocab')
    Physical:  ('fsdp', None)
I0423 02:49:36.601355 136225334708032 maxtext_utils.py:1707]  params/params/token_embedder/embedding
    Shape:     float32[32000,2048]
    Logical:   PartitionSpec('vocab', 'embed_vocab')
    Physical:  (None, 'fsdp')

I0423 02:49:37.336496 136225334708032 train.py:155] train/xent Logical: float32[8,128].............................................. ('activation_embed_and_logits_batch', 'activation_length').
I0423 02:49:37.336576 136225334708032 train.py:155] train/xent Physical: float32[8,128].............................................. ('fsdp', None).
I0423 02:49:37.348800 136225334708032 train.py:162] train/z_loss Logical: float32[8,128].............................................. ('activation_embed_and_logits_batch', 'activation_length').
I0423 02:49:37.348849 136225334708032 train.py:162] train/z_loss Physical: float32[8,128].............................................. ('fsdp', None).
I0423 02:49:37.945013 136225334708032 max_utils.py:791] Total memory size: 2.5 GB, Output size: 1.5 GB, Temp size: 1.0 GB, Argument size: 1.5 GB, Host temp size: 0.0 GB.
I0423 02:49:37.945571 136225334708032 max_utils.py:194] tensorboardX not available; using no-op SummaryWriter.
I0423 02:49:37.945726 136225334708032 metric_logger.py:301] number parameters: 1.104 billion
I0423 02:49:41.414293 136225334708032 checkpointing.py:772] Waiting for step 0 to finish before checkpoint...
I0423 02:49:41.481530 136225334708032 checkpointing.py:776] Waited 0.06723284721374512 seconds for step 0 to finish before starting checkpointing.
I0423 02:49:41.482157 136225334708032 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0423 02:49:41.482312 136225334708032 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 0
I0423 02:49:41.482677 136225334708032 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/0.
I0423 02:49:41.562334 136225334708032 signaling_client.py:373] Using ThreadSafeKeyValueSignalingClient
I0423 02:49:41.658678 136099649291840 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/0
I0423 02:49:41.679476 136225334708032 jax_array_handlers.py:347] Scheduling D2H of 39 prioritized jax.Array.
I0423 02:49:41.679562 136225334708032 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 02:49:42.439729 136099638806080 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/0/items
I0423 02:49:42.586575 136099607348800 checkpoint.py:188] Wrote Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776912582332909598, 'commit_timestamp_nsecs': None, 'custom_metadata': {}}, json={"item_handlers": null, "metrics": {}, "performance_metrics": {}, "init_timestamp_nsecs": 1776912582332909598, "commit_timestamp_nsecs": null, "custom_metadata": {}} to gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/0/_CHECKPOINT_METADATA
I0423 02:49:42.949832 2343425 google_auth_provider.cc:149] Using credentials at ~/.config/gcloud/application_default_credentials.json
I0423 02:49:42.949883 2343425 google_auth_provider.cc:156] Using OAuth2 AuthProvider
I0423 02:49:43.172943 136225334708032 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 1.493849s
I0423 02:49:43.177692 136225334708032 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 7.646 GiB/s (total gbytes: 12.3 GiB) (time elapsed: a second) (per-host)
I0423 02:49:43.178085 136225334708032 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 1.614495s (batch_requests_ready=0.112121s, total_serialization_initiated=1.497487s, others=0.004887s)
I0423 02:49:43.178184 136225334708032 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 1.615397s (all_items=0.000021s, per_item={'items': '0.00002098'}, temp_paths=1.615376)
I0423 02:49:43.179416 136098617493056 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started.
I0423 02:49:43.179579 136225334708032 async_checkpointer.py:561] Finished blocking save. Time taken: 1.697221s. Continuing background save to gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/0.
I0423 02:49:43.179759 136225334708032 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0423 02:49:43.180174 136099659777600 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save.
I0423 02:49:43.180298 136225334708032 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776912581.4821422, 'wait_for_prev_duration_secs': 4.553794860839844e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776912581.4823334, 'checkpointer_blocking_duration_secs': 1.6973209381103516, 'get_old_steps_start_time': 1776912583.17968, 'get_old_steps_duration_secs': 3.4332275390625e-05, 'checkpoint_manager_blocking_start_time': 1776912581.4820611, 'checkpoint_manager_blocking_duration_secs': 1.6981983184814453}
I0423 02:49:43.180448 136225334708032 checkpointing.py:408] Started an asynchronous checkpoint save for step 0
I0423 02:49:43.180497 136225334708032 max_utils.py:750] 
Memstats: After params initialized:
I0423 02:49:43.180550 136225334708032 max_utils.py:756] 	Using (GB) 1.56 / 31.25 (4.992000%) on TPU_0(process=0,(0,0,0,0))
I0423 02:49:43.180577 136225334708032 max_utils.py:756] 	Using (GB) 1.56 / 31.25 (4.992000%) on TPU_1(process=0,(1,0,0,0))
I0423 02:49:43.180598 136225334708032 max_utils.py:756] 	Using (GB) 1.56 / 31.25 (4.992000%) on TPU_2(process=0,(0,1,0,0))
I0423 02:49:43.180617 136225334708032 max_utils.py:756] 	Using (GB) 1.56 / 31.25 (4.992000%) on TPU_3(process=0,(1,1,0,0))
I0423 02:49:43.180635 136225334708032 max_utils.py:756] 	Using (GB) 1.56 / 31.25 (4.992000%) on TPU_4(process=0,(0,2,0,0))
I0423 02:49:43.180653 136225334708032 max_utils.py:756] 	Using (GB) 1.56 / 31.25 (4.992000%) on TPU_5(process=0,(1,2,0,0))
I0423 02:49:43.180670 136225334708032 max_utils.py:756] 	Using (GB) 1.56 / 31.25 (4.992000%) on TPU_6(process=0,(0,3,0,0))
I0423 02:49:43.180686 136225334708032 max_utils.py:756] 	Using (GB) 1.56 / 31.25 (4.992000%) on TPU_7(process=0,(1,3,0,0))
I0423 02:49:43.585698 136225334708032 metric_logger.py:196] completed step: 0, seconds: 3.468, TFLOP/s/device: 0.231, Tokens/s/device: 36.909, total_weights: 963, loss: 10.834, lm_loss: 10.834, perplexity: 50699.652
I0423 02:49:43.586745 136225334708032 metric_logger.py:281] To see full metrics 'tensorboard --logdir=gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/tensorboard/'
I0423 02:49:43.647346 136225334708032 metric_logger.py:196] completed step: 1, seconds: 2.169, TFLOP/s/device: 0.369, Tokens/s/device: 59.008, total_weights: 945, loss: 10.747, lm_loss: 10.747, perplexity: 46511.984
I0423 02:49:43.711732 136225334708032 metric_logger.py:196] completed step: 2, seconds: 0.011, TFLOP/s/device: 73.861, Tokens/s/device: 11804.851, total_weights: 962, loss: 10.247, lm_loss: 10.247, perplexity: 28185.607
I0423 02:49:43.775801 136225334708032 metric_logger.py:196] completed step: 3, seconds: 0.062, TFLOP/s/device: 12.824, Tokens/s/device: 2049.673, total_weights: 975, loss: 9.829, lm_loss: 9.829, perplexity: 18562.363
I0423 02:49:53.331683 136099210987072 array_metadata_store.py:203] [process=0][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/0/items/array_metadatas/process_0
I0423 02:49:53.332078 136225334708032 metric_logger.py:196] completed step: 4, seconds: 0.065, TFLOP/s/device: 12.380, Tokens/s/device: 1978.637, total_weights: 962, loss: 9.393, lm_loss: 9.393, perplexity: 11999.676
I0423 02:49:53.359320 136225334708032 metric_logger.py:196] completed step: 5, seconds: 0.064, TFLOP/s/device: 12.526, Tokens/s/device: 2002.033, total_weights: 958, loss: 9.249, lm_loss: 9.249, perplexity: 10399.042
I0423 02:49:53.421956 136225334708032 metric_logger.py:196] completed step: 6, seconds: 9.572, TFLOP/s/device: 0.084, Tokens/s/device: 13.372, total_weights: 930, loss: 9.424, lm_loss: 9.424, perplexity: 12377.827
I0423 02:49:53.486895 136225334708032 metric_logger.py:196] completed step: 7, seconds: 0.010, TFLOP/s/device: 83.079, Tokens/s/device: 13278.008, total_weights: 935, loss: 9.317, lm_loss: 9.317, perplexity: 11127.848
I0423 02:49:53.551792 136225334708032 metric_logger.py:196] completed step: 8, seconds: 0.065, TFLOP/s/device: 12.410, Tokens/s/device: 1983.451, total_weights: 930, loss: 9.479, lm_loss: 9.479, perplexity: 13077.248
I0423 02:49:53.618850 136225334708032 checkpointing.py:772] Waiting for step 9 to finish before checkpoint...
I0423 02:49:53.620563 136225334708032 checkpointing.py:776] Waited 0.0017521381378173828 seconds for step 9 to finish before starting checkpointing.
I0423 02:49:53.623214 136225334708032 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0423 02:50:26.615641 136098885928512 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 43.437776s (commit=42.935555s, array_metadata_write=0.502220s)
I0423 02:50:26.616658 136098617493056 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 280.487 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 45 seconds) (per-host)
I0423 02:50:26.616766 136098617493056 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 43.437232s.
I0423 02:50:26.859601 136098617493056 checkpoint.py:228] Read Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776912582332909598, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} from gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/0/_CHECKPOINT_METADATA
I0423 02:50:27.085450 136098617493056 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 02:50:27.271731 136099607348800 checkpoint.py:247] Updated Metadata={'item_handlers': {'items': 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler'}, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776912582332909598, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} to gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/0/_CHECKPOINT_METADATA
I0423 02:50:27.501893 136098617493056 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389).
I0423 02:50:27.502077 136098617493056 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.601197s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/0/items
I0423 02:50:27.502842 136098617493056 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/0/items
I0423 02:50:27.744978 136098617493056 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/0
I0423 02:50:28.448816 136098617493056 atomicity.py:794] [process=0][thread=async_save] Finished saving checkpoint (finalized tmp dir) to `gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/0`.
I0423 02:50:28.449459 136098617493056 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 46.967110s. directory=gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/0
I0423 02:50:28.449546 136098617493056 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 45.270015s.
I0423 02:50:28.449756 136099659777600 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save.
I0423 02:50:28.449864 136099659777600 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save.
I0423 02:50:28.449943 136099659777600 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0423 02:50:28.449994 136099659777600 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0423 02:50:28.450283 136225334708032 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 02:50:28.450422 136225334708032 checkpoint_manager.py:1441] Waiting for previous save to complete took 34.828504 seconds. If this number is high, consider checkpointing less frequently.
I0423 02:50:28.451367 136225334708032 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 9
I0423 02:50:28.451693 136225334708032 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/9.
I0423 02:50:28.620009 136098617493056 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/9
I0423 02:50:28.635213 136225334708032 jax_array_handlers.py:347] Scheduling D2H of 39 prioritized jax.Array.
I0423 02:50:28.635308 136225334708032 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 02:50:29.332072 136099210987072 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/9/items
I0423 02:50:32.890509 136225334708032 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 4.255651s
I0423 02:50:32.894711 136225334708032 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 2.833 GiB/s (total gbytes: 12.3 GiB) (time elapsed: 4 seconds) (per-host)
I0423 02:50:32.894775 136225334708032 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 4.355549s (batch_requests_ready=0.092862s, total_serialization_initiated=4.258590s, others=0.004097s)
I0423 02:50:32.894850 136225334708032 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 4.356074s (all_items=0.000023s, per_item={'items': '0.00002289'}, temp_paths=4.356051)
I0423 02:50:32.896719 136099659777600 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started.
I0423 02:50:32.896801 136225334708032 async_checkpointer.py:561] Finished blocking save. Time taken: 4.445385s. Continuing background save to gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/9.
I0423 02:50:32.896999 136225334708032 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0423 02:50:32.897188 136098617493056 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save.
I0423 02:50:32.897306 136225334708032 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776912593.6218836, 'wait_for_prev_duration_secs': 34.82850360870361, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776912628.4513931, 'checkpointer_blocking_duration_secs': 4.445512294769287, 'get_old_steps_start_time': 1776912632.8969233, 'get_old_steps_duration_secs': 3.504753112792969e-05, 'checkpoint_manager_blocking_start_time': 1776912593.6208534, 'checkpoint_manager_blocking_duration_secs': 39.27642321586609}
I0423 02:50:32.897386 136225334708032 checkpointing.py:408] Started an asynchronous checkpoint save for step 9
I0423 02:50:32.897421 136225334708032 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0423 02:50:33.653312 136208699098688 array_metadata_store.py:203] [process=0][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/9/items/array_metadatas/process_0
I0423 02:51:03.616445 136099210987072 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 30.721229s (commit=30.266211s, array_metadata_write=0.455019s)
I0423 02:51:03.617423 136099659777600 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 360.246 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 35 seconds) (per-host)
I0423 02:51:03.617480 136099659777600 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 30.720633s.
I0423 02:51:04.094948 136099659777600 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 02:51:04.491140 136099659777600 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389).
I0423 02:51:04.491353 136099659777600 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.566675s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/9/items
I0423 02:51:04.492032 136099659777600 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/9/items
I0423 02:51:04.746790 136099659777600 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/9
I0423 02:51:05.449242 136099659777600 atomicity.py:794] [process=0][thread=async_save] Finished saving checkpoint (finalized tmp dir) to `gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/9`.
I0423 02:51:05.449869 136099659777600 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 36.998460s. directory=gs://wanglance-maxtext/linen_ckpt_fix_gate_fp8_nan_sanitization_20260423_024158/linen_fix_gate_fp8_nan_sanitization_20260423_024158_03_dropout/checkpoints/9
I0423 02:51:05.449949 136099659777600 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 32.553105s.
I0423 02:51:05.450145 136098617493056 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save.
I0423 02:51:05.450253 136098617493056 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save.
I0423 02:51:05.450320 136098617493056 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0423 02:51:05.450363 136098617493056 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0423 02:51:05.450536 136225334708032 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 02:51:05.450685 136225334708032 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0423 02:51:05.452374 136225334708032 metric_logger.py:196] completed step: 9, seconds: 0.064, TFLOP/s/device: 12.435, Tokens/s/device: 1987.423, total_weights: 948, loss: 9.141, lm_loss: 9.141, perplexity: 9328.599
Per train step:
 Total TFLOPs: 0.80 
 split as 99.60% learnable weight flops and 0.40% attention flops