MaxView

XPK Start: Tue Apr 21 16:19:55 UTC 2026
PyTorch was not found. Models won't be available and only tokenizers, configuration and file/data utilities can be used.
2026-04-21 16:20:19.184284: E external/local_xla/xla/stream_executor/cuda/cuda_platform.cc:51] failed call to cuInit: INTERNAL: CUDA error: Failed call to cuInit: UNKNOWN ERROR (303)
I0421 16:20:19.712786 136902642624320 max_utils.py:273] Attempting to initialize the jax distributed system...
I0421 16:20:28.753236 136902642624320 distributed.py:149] Starting JAX distributed service on [::]:8482
I0421 16:20:28.755524 136902642624320 distributed.py:172] Connecting to JAX distributed service on mt-01-base-kkjou-slice-job-0-0.mt-01-base-kkjou:8482
I0421 16:20:29.505547 136902642624320 max_utils.py:284] Jax distributed system initialized!
I0421 16:20:34.641555 136902642624320 max_utils.py:800] System Information: Jax Version: 0.9.2
I0421 16:20:34.641658 136902642624320 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0421 16:20:34.641697 136902642624320 max_utils.py:802] System Information: Jax Backend: PJRT C API
TFRT TPU v6 lite
Built on Mar 4 2026 11:32:08 (1772652728) cl/878335365
I0421 16:20:34.641731 136902642624320 train_utils.py:378] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0421 16:20:35.336215 136902642624320 maxtext_utils.py:1718] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0421 16:20:35.449611 136902642624320 checkpointing.py:688] Setting up checkpoint logger...
I0421 16:20:35.449722 136902642624320 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True
I0421 16:20:35.449768 136902642624320 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0421 16:20:35.449978 136902642624320 base_pytree_checkpoint_handler.py:441] 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 0x7c8269a4c470>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0421 16:20:39.390486 136902642624320 checkpointing.py:266] Enabling policy for fixed interval checkpointing.
I0421 16:20:39.390722 136902642624320 checkpoint_manager.py:708] [process=3][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7c6ed41ff140>}, handler_registry=None
I0421 16:20:39.390970 136902642624320 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7c6ed41ff140>` for item "items" and save args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>` to `_handler_registry`.
I0421 16:20:39.391019 136902642624320 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7c6ebc558e90>` for item "metrics" and save args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>` to `_handler_registry`.
I0421 16:20:39.391054 136902642624320 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 0x7c6ed41ff140>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7c6ed41ff140>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7c6ebc558e90>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7c6ebc558e90>}).
I0421 16:20:39.391362 136902642624320 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0421 16:20:39.391435 136902642624320 async_checkpointer.py:192] [process=3][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7c6ebc4b1760> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0421 16:20:40.337193 136902642624320 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900_01_base/checkpoints
I0421 16:20:40.361686 136902642624320 checkpoint_manager.py:929] [process=3][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_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, lightweight_initialize=False), root_directory=gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900_01_base/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7c6ebc56f4a0>
I0421 16:20:40.361817 136902642624320 checkpointing.py:302] Checkpoint manager created!
I0421 16:20:41.318883 136902642624320 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint
I0421 16:20:41.319009 136902642624320 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint.
fsdp: 32

I0421 16:20:43.065658 136902642624320 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0421 16:20:43.065753 136902642624320 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0421 16:20:43.071433 136902642624320 nnx_decoders.py:465] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0421 16:20:43.071496 136902642624320 nnx_decoders.py:465] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0421 16:20:43.087893 136902642624320 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0421 16:20:43.087963 136902642624320 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0421 16:20:43.103617 136902642624320 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0421 16:20:43.103676 136902642624320 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0421 16:20:43.127676 136902642624320 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0421 16:20:43.127743 136902642624320 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0421 16:20:43.143573 136902642624320 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0421 16:20:43.143633 136902642624320 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0421 16:20:43.159496 136902642624320 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0421 16:20:43.159554 136902642624320 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0421 16:20:43.189674 136902642624320 attentions.py:1197] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0421 16:20:43.189753 136902642624320 attentions.py:1197] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0421 16:20:43.209607 136902642624320 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0421 16:20:43.209676 136902642624320 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0421 16:20:54.658167 136902642624320 max_utils.py:791] Total memory size: 1.5 GB, Output size: 0.4 GB, Temp size: 1.1 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB.
I0421 16:20:54.660459 136902642624320 metric_logger.py:301] number parameters: 1.104 billion
I0421 16:21:05.836588 136902642624320 checkpointing.py:794] Waiting for step 0 to finish before checkpoint...
I0421 16:21:05.989965 136902642624320 checkpointing.py:798] Waited 0.15332651138305664 seconds for step 0 to finish before starting checkpointing.
I0421 16:21:05.992321 136902642624320 checkpoint_manager.py:2009] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0421 16:21:05.993988 136902642624320 checkpoint_manager.py:1512] [process=3] Saving checkpoint at step 0
I0421 16:21:05.995297 136902642624320 event_tracking.py:70] [process=3] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900_01_base/checkpoints/0.
I0421 16:21:06.709474 136902642624320 signaling_client.py:364] Using JaxDistributedSignalingClient
I0421 16:21:06.710466 136902642624320 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array.
I0421 16:21:06.710526 136902642624320 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False
I0421 16:21:06.984700 136902642624320 base_pytree_checkpoint_handler.py:154] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.275986s
I0421 16:21:06.984879 136902642624320 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/blocking_gbytes_per_sec: 5.414 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2849411964416504 s) (per-host)
I0421 16:21:06.984944 136902642624320 base_pytree_checkpoint_handler.py:768] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.285005s (batch_requests_ready=0.002915s, total_serialization_initiated=0.282019s, others=0.000072s)
I0421 16:21:06.985047 136902642624320 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.289150s (all_items=0.000019s, per_item={'items': '0.00001884'}, temp_paths=0.289131)
I0421 16:21:06.985835 136902642624320 event_tracking.py:125] [process=3] [async] Finished blocking save in 0.99 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900_01_base/checkpoints/0.
I0421 16:21:06.986185 136775103420160 async_checkpointer.py:76] [process=3][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-21 16:41:06.986146
I0421 16:21:06.996564 136902642624320 checkpoint_manager.py:1560] [process=3][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0421 16:21:06.996871 136774009480960 async_checkpointer.py:280] [process=3][thread=save_finalize] Waiting for background save thread=async_save.
I0421 16:21:06.997042 136902642624320 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900_01_base/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776788465.9923012, 'wait_for_prev_duration_secs': 6.4849853515625e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776788465.9940262, 'checkpointer_blocking_duration_secs': 0.9923124313354492, 'get_old_steps_start_time': 1776788466.9863644, 'get_old_steps_duration_secs': 3.24249267578125e-05, 'checkpoint_manager_blocking_start_time': 1776788465.990356, 'checkpoint_manager_blocking_duration_secs': 1.0066471099853516}
I0421 16:21:06.997152 136902642624320 checkpointing.py:409] Started an asynchronous checkpoint save for step 0
I0421 16:21:06.997219 136902642624320 max_utils.py:750] 
Memstats: After params initialized:
I0421 16:21:06.997272 136902642624320 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_10(process=3,(2,2,0,0))
I0421 16:21:06.997304 136902642624320 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_11(process=3,(3,2,0,0))
I0421 16:21:06.997330 136902642624320 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_14(process=3,(2,3,0,0))
I0421 16:21:06.997354 136902642624320 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_15(process=3,(3,3,0,0))
I0421 16:21:07.308907 136902642624320 metric_logger.py:196] completed step: 0, seconds: 11.175, TFLOP/s/device: 1.216, Tokens/s/device: 183.265, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52786.469
I0421 16:21:07.485892 136902642624320 metric_logger.py:196] completed step: 1, seconds: 1.470, TFLOP/s/device: 9.240, Tokens/s/device: 1392.732, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52786.469
I0421 16:21:07.903906 136902642624320 metric_logger.py:196] completed step: 2, seconds: 0.031, TFLOP/s/device: 444.634, Tokens/s/device: 67020.093, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28632.133
I0421 16:21:08.051917 136902642624320 metric_logger.py:196] completed step: 3, seconds: 0.408, TFLOP/s/device: 33.318, Tokens/s/device: 5022.094, total_weights: 65536, loss: 9.732, lm_loss: 9.732, perplexity: 16855.789
I0421 16:21:08.347535 136902642624320 metric_logger.py:196] completed step: 4, seconds: 0.165, TFLOP/s/device: 82.479, Tokens/s/device: 12432.088, total_weights: 65536, loss: 9.274, lm_loss: 9.274, perplexity: 10661.594
I0421 16:21:08.355010 136902642624320 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.144, Tokens/s/device: 13888.889, total_weights: 65536, loss: 8.888, lm_loss: 8.888, perplexity: 7245.978
I0421 16:21:10.031966    2825 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0421 16:21:12.084343 136774520772352 array_metadata_store.py:203] [process=3][thread=array_type_handler] Wrote 69 array_metadata.ArrayMetadata to gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900_01_base/checkpoints/0/items/array_metadatas/process_3
I0421 16:21:30.751049 136902642624320 metric_logger.py:196] completed step: 6, seconds: 0.296, TFLOP/s/device: 45.873, Tokens/s/device: 6914.411, total_weights: 65536, loss: 8.589, lm_loss: 8.589, perplexity: 5371.156
I0421 16:21:30.898514 136902642624320 metric_logger.py:196] completed step: 7, seconds: 22.250, TFLOP/s/device: 0.611, Tokens/s/device: 92.046, total_weights: 65536, loss: 8.380, lm_loss: 8.380, perplexity: 4360.465
I0421 16:21:31.045877 136902642624320 metric_logger.py:196] completed step: 8, seconds: 0.153, TFLOP/s/device: 88.621, Tokens/s/device: 13357.858, total_weights: 65536, loss: 8.251, lm_loss: 8.251, perplexity: 3831.256
I0421 16:21:31.194131 136902642624320 checkpointing.py:794] Waiting for step 9 to finish before checkpoint...
I0421 16:21:31.194801 136902642624320 checkpointing.py:798] Waited 0.0006823539733886719 seconds for step 9 to finish before starting checkpointing.
I0421 16:21:31.196841 136902642624320 checkpoint_manager.py:2020] [process=3][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0421 16:21:43.483481 136775103420160 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/gbytes_per_sec: 42.943 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 36.78350591659546 s) (per-host)
I0421 16:21:43.483603 136775103420160 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 36.497305s.
I0421 16:21:50.989922 136775103420160 async_checkpointer.py:160] [process=3][thread=async_save] Background save thread done. Time taken: 44.003607s.
I0421 16:21:50.990241 136774009480960 async_checkpointer.py:288] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save.
I0421 16:21:50.990361 136774009480960 async_checkpointer.py:298] [process=3][thread=save_finalize] No errors found in background save thread=async_save.
I0421 16:21:50.990412 136774009480960 checkpoint_manager.py:2137] [process=3][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0421 16:21:50.992788 136774009480960 checkpoint_manager.py:2146] [process=3][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0421 16:21:50.992991 136902642624320 checkpoint_manager.py:2032] [process=3][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0.
W0421 16:21:50.993122 136902642624320 checkpoint_manager.py:1452] Waiting for previous save to complete took 19.796284 seconds. If this number is high, consider checkpointing less frequently.
I0421 16:21:50.994983 136902642624320 checkpoint_manager.py:1512] [process=3] Saving checkpoint at step 9
I0421 16:21:50.997112 136902642624320 event_tracking.py:70] [process=3] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900_01_base/checkpoints/9.
I0421 16:21:51.298959 136902642624320 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array.
I0421 16:21:51.299051 136902642624320 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False
I0421 16:21:51.335410 136902642624320 base_pytree_checkpoint_handler.py:154] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.038013s
I0421 16:21:51.335557 136902642624320 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/blocking_gbytes_per_sec: 34.315 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04495358467102051 s) (per-host)
I0421 16:21:51.335606 136902642624320 base_pytree_checkpoint_handler.py:768] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.045010s (batch_requests_ready=0.002656s, total_serialization_initiated=0.042291s, others=0.000063s)
I0421 16:21:51.335692 136902642624320 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.049028s (all_items=0.000017s, per_item={'items': '0.00001669'}, temp_paths=0.049011)
I0421 16:21:51.336340 136902642624320 event_tracking.py:125] [process=3] [async] Finished blocking save in 0.34 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900_01_base/checkpoints/9.
I0421 16:21:51.336699 136774009480960 async_checkpointer.py:76] [process=3][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-21 16:41:51.336661
I0421 16:21:51.338660 136902642624320 checkpoint_manager.py:1560] [process=3][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0421 16:21:51.339250 136774520772352 async_checkpointer.py:280] [process=3][thread=save_finalize] Waiting for background save thread=async_save.
I0421 16:21:51.339421 136902642624320 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900_01_base/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776788491.196808, 'wait_for_prev_duration_secs': 19.796284198760986, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776788510.9950216, 'checkpointer_blocking_duration_secs': 0.3418271541595459, 'get_old_steps_start_time': 1776788511.3368714, 'get_old_steps_duration_secs': 2.7418136596679688e-05, 'checkpoint_manager_blocking_start_time': 1776788491.195033, 'checkpoint_manager_blocking_duration_secs': 20.144354581832886}
I0421 16:21:51.339541 136902642624320 checkpointing.py:409] Started an asynchronous checkpoint save for step 9
I0421 16:21:51.339587 136902642624320 checkpoint_manager.py:2020] [process=3][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0421 16:21:56.479261 136749191747328 array_metadata_store.py:203] [process=3][thread=array_type_handler] Wrote 69 array_metadata.ArrayMetadata to gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900_01_base/checkpoints/9/items/array_metadatas/process_3
I0421 16:22:34.039221 136774009480960 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/gbytes_per_sec: 36.951 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.74859428405762 s) (per-host)
I0421 16:22:34.039331 136774009480960 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.702517s.
I0421 16:22:41.199088 136774009480960 async_checkpointer.py:160] [process=3][thread=async_save] Background save thread done. Time taken: 49.862258s.
I0421 16:22:41.199371 136774520772352 async_checkpointer.py:288] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save.
I0421 16:22:41.199488 136774520772352 async_checkpointer.py:298] [process=3][thread=save_finalize] No errors found in background save thread=async_save.
I0421 16:22:41.199536 136774520772352 checkpoint_manager.py:2137] [process=3][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0421 16:22:41.202315 136774520772352 checkpoint_manager.py:2146] [process=3][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0421 16:22:41.202493 136902642624320 checkpoint_manager.py:2032] [process=3][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9.
I0421 16:22:41.202661 136902642624320 checkpoint_manager.py:2009] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0421 16:22:41.203624 136902642624320 metric_logger.py:196] completed step: 9, seconds: 0.148, TFLOP/s/device: 91.869, Tokens/s/device: 13847.569, total_weights: 65536, loss: 8.175, lm_loss: 8.175, perplexity: 3551.438
Per train step:
 Total TFLOPs: 13.59 
 split as 93.93% learnable weight flops and 6.07% attention flops
XPK End: Tue Apr 21 16:22:50 UTC 2026
EXIT_CODE=0