MaxView

XPK Start: Wed Apr 22 11:21:18 UTC 2026
PyTorch was not found. Models won't be available and only tokenizers, configuration and file/data utilities can be used.
2026-04-22 11:21:42.718944: 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)
I0422 11:21:43.258170 132612905645888 max_utils.py:273] Attempting to initialize the jax distributed system...
I0422 11:21:52.299746 132612905645888 distributed.py:149] Starting JAX distributed service on [::]:8482
I0422 11:21:52.302054 132612905645888 distributed.py:172] Connecting to JAX distributed service on mt-07-eval-us0e8-slice-job-0-0.mt-07-eval-us0e8:8482
I0422 11:21:54.740959 132612905645888 max_utils.py:284] Jax distributed system initialized!
I0422 11:21:59.968421 132612905645888 max_utils.py:800] System Information: Jax Version: 0.9.2
I0422 11:21:59.968527 132612905645888 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0422 11:21:59.968569 132612905645888 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
I0422 11:21:59.968603 132612905645888 train_utils.py:378] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0422 11:22:00.667585 132612905645888 maxtext_utils.py:1718] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0422 11:22:00.780813 132612905645888 checkpointing.py:688] Setting up checkpoint logger...
I0422 11:22:00.780926 132612905645888 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True
I0422 11:22:00.780970 132612905645888 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0422 11:22:00.781193 132612905645888 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 0x789bb8918320>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0422 11:22:03.651972 132612905645888 checkpointing.py:266] Enabling policy for fixed interval checkpointing.
I0422 11:22:03.652218 132612905645888 checkpoint_manager.py:708] [process=6][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7887fc2f3ce0>}, handler_registry=None
I0422 11:22:03.652456 132612905645888 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7887fc2f3ce0>` 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`.
I0422 11:22:03.652503 132612905645888 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7887b44f0230>` 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`.
I0422 11:22:03.652539 132612905645888 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 0x7887fc2f3ce0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7887fc2f3ce0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7887b44f0230>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7887b44f0230>}).
I0422 11:22:03.652862 132612905645888 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0422 11:22:03.652932 132612905645888 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7887b4799760> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0422 11:22:04.923530 132612905645888 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260422_093106/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260422_093106_07_eval/checkpoints
I0422 11:22:04.925725 132612905645888 checkpoint_manager.py:929] [process=6][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_20260422_093106/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260422_093106_07_eval/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7887b449a9f0>
I0422 11:22:04.925836 132612905645888 checkpointing.py:302] Checkpoint manager created!
I0422 11:22:05.886340 132612905645888 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint
I0422 11:22:05.886459 132612905645888 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint.
fsdp: 32

I0422 11:22:07.658627 132612905645888 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0422 11:22:07.658719 132612905645888 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0422 11:22:07.664187 132612905645888 nnx_decoders.py:465] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0422 11:22:07.664243 132612905645888 nnx_decoders.py:465] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0422 11:22:07.685520 132612905645888 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0422 11:22:07.685601 132612905645888 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0422 11:22:07.703247 132612905645888 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0422 11:22:07.703305 132612905645888 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0422 11:22:07.727477 132612905645888 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0422 11:22:07.727548 132612905645888 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 11:22:07.743634 132612905645888 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0422 11:22:07.743694 132612905645888 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 11:22:07.759726 132612905645888 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0422 11:22:07.759785 132612905645888 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 11:22:07.789820 132612905645888 attentions.py:1197] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0422 11:22:07.789891 132612905645888 attentions.py:1197] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 11:22:07.810113 132612905645888 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0422 11:22:07.810175 132612905645888 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0422 11:22:19.104154 132612905645888 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.
I0422 11:22:19.106444 132612905645888 metric_logger.py:301] number parameters: 1.104 billion
I0422 11:22:30.523546 132612905645888 checkpointing.py:794] Waiting for step 0 to finish before checkpoint...
I0422 11:22:30.675574 132612905645888 checkpointing.py:798] Waited 0.15201973915100098 seconds for step 0 to finish before starting checkpointing.
I0422 11:22:30.678456 132612905645888 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0422 11:22:30.680059 132612905645888 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 0
I0422 11:22:30.681558 132612905645888 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260422_093106/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260422_093106_07_eval/checkpoints/0.
I0422 11:22:31.448708 132612905645888 signaling_client.py:364] Using JaxDistributedSignalingClient
I0422 11:22:31.449684 132612905645888 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array.
I0422 11:22:31.449741 132612905645888 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
I0422 11:22:31.729052 132612905645888 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.281128s
I0422 11:22:31.729252 132612905645888 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.316 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.29018330574035645 s) (per-host)
I0422 11:22:31.729310 132612905645888 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.290251s (batch_requests_ready=0.002964s, total_serialization_initiated=0.287211s, others=0.000076s)
I0422 11:22:31.729412 132612905645888 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.294555s (all_items=0.000018s, per_item={'items': '0.00001836'}, temp_paths=0.294537)
I0422 11:22:31.730264 132612905645888 event_tracking.py:125] [process=6] [async] Finished blocking save in 1.05 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260422_093106/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260422_093106_07_eval/checkpoints/0.
I0422 11:22:31.730616 132486881810176 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 11:42:31.730576
I0422 11:22:31.734924 132612905645888 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0422 11:22:31.735202 132484729652992 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save.
I0422 11:22:31.735372 132612905645888 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260422_093106/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260422_093106_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776856950.6784375, 'wait_for_prev_duration_secs': 6.437301635742188e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776856950.6801078, 'checkpointer_blocking_duration_secs': 1.0506742000579834, 'get_old_steps_start_time': 1776856951.7308078, 'get_old_steps_duration_secs': 3.123283386230469e-05, 'checkpoint_manager_blocking_start_time': 1776856950.675963, 'checkpoint_manager_blocking_duration_secs': 1.0593645572662354}
I0422 11:22:31.735484 132612905645888 checkpointing.py:409] Started an asynchronous checkpoint save for step 0
I0422 11:22:31.735557 132612905645888 max_utils.py:750] 
Memstats: After params initialized:
I0422 11:22:31.735608 132612905645888 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_24(process=6,(0,6,0,0))
I0422 11:22:31.735640 132612905645888 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_25(process=6,(1,6,0,0))
I0422 11:22:31.735666 132612905645888 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_28(process=6,(0,7,0,0))
I0422 11:22:31.735689 132612905645888 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_29(process=6,(1,7,0,0))
I0422 11:22:32.051308 132612905645888 metric_logger.py:196] completed step: 0, seconds: 11.416, TFLOP/s/device: 1.190, Tokens/s/device: 179.397, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52786.469
I0422 11:22:32.230720 132612905645888 metric_logger.py:196] completed step: 1, seconds: 1.526, TFLOP/s/device: 8.906, Tokens/s/device: 1342.409, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52786.469
I0422 11:22:32.675733 132612905645888 metric_logger.py:196] completed step: 2, seconds: 0.033, TFLOP/s/device: 408.120, Tokens/s/device: 61516.280, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28632.133
I0422 11:22:32.823373 132612905645888 metric_logger.py:196] completed step: 3, seconds: 0.435, TFLOP/s/device: 31.237, Tokens/s/device: 4708.349, total_weights: 65536, loss: 9.732, lm_loss: 9.732, perplexity: 16855.789
I0422 11:22:33.119043 132612905645888 metric_logger.py:196] completed step: 4, seconds: 0.164, TFLOP/s/device: 82.632, Tokens/s/device: 12455.148, total_weights: 65536, loss: 9.274, lm_loss: 9.274, perplexity: 10661.594
I0422 11:22:33.126224 132612905645888 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.371, Tokens/s/device: 13923.164, total_weights: 65536, loss: 8.888, lm_loss: 8.888, perplexity: 7245.978
I0422 11:22:34.922797    2750 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0422 11:22:36.937612 132484738045696 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 69 array_metadata.ArrayMetadata to gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260422_093106/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260422_093106_07_eval/checkpoints/0/items/array_metadatas/process_6
I0422 11:22:55.404329 132612905645888 metric_logger.py:196] completed step: 6, seconds: 0.296, TFLOP/s/device: 45.880, Tokens/s/device: 6915.578, total_weights: 65536, loss: 8.589, lm_loss: 8.589, perplexity: 5371.156
I0422 11:22:55.551761 132612905645888 metric_logger.py:196] completed step: 7, seconds: 22.132, TFLOP/s/device: 0.614, Tokens/s/device: 92.537, total_weights: 65536, loss: 8.380, lm_loss: 8.380, perplexity: 4360.465
I0422 11:22:55.699352 132612905645888 metric_logger.py:196] completed step: 8, seconds: 0.153, TFLOP/s/device: 88.689, Tokens/s/device: 13368.233, total_weights: 65536, loss: 8.251, lm_loss: 8.251, perplexity: 3831.256
I0422 11:22:55.847532 132612905645888 checkpointing.py:794] Waiting for step 9 to finish before checkpoint...
I0422 11:22:55.848211 132612905645888 checkpointing.py:798] Waited 0.0006921291351318359 seconds for step 9 to finish before starting checkpointing.
I0422 11:22:55.850082 132612905645888 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0422 11:23:07.863258 132486881810176 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 43.367 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 36.424150228500366 s) (per-host)
I0422 11:23:07.863383 132486881810176 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 36.132646s.
I0422 11:23:17.567576 132486881810176 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 45.836815s.
I0422 11:23:17.567860 132484729652992 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save.
I0422 11:23:17.567992 132484729652992 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save.
I0422 11:23:17.568050 132484729652992 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0422 11:23:17.570716 132484729652992 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0422 11:23:17.570894 132612905645888 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0.
W0422 11:23:17.571024 132612905645888 checkpoint_manager.py:1452] Waiting for previous save to complete took 21.720943 seconds. If this number is high, consider checkpointing less frequently.
I0422 11:23:17.572917 132612905645888 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 9
I0422 11:23:17.574957 132612905645888 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260422_093106/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260422_093106_07_eval/checkpoints/9.
I0422 11:23:17.867618 132612905645888 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array.
I0422 11:23:17.867711 132612905645888 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
I0422 11:23:17.904197 132612905645888 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.038131s
I0422 11:23:17.904371 132612905645888 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 34.163 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04515337944030762 s) (per-host)
I0422 11:23:17.904423 132612905645888 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.045216s (batch_requests_ready=0.002642s, total_serialization_initiated=0.042504s, others=0.000070s)
I0422 11:23:17.904523 132612905645888 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.049231s (all_items=0.000015s, per_item={'items': '0.00001550'}, temp_paths=0.049215)
I0422 11:23:17.905230 132612905645888 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.33 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260422_093106/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260422_093106_07_eval/checkpoints/9.
I0422 11:23:17.905591 132484729652992 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 11:43:17.905553
I0422 11:23:17.907594 132612905645888 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0422 11:23:17.907891 132484738045696 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save.
I0422 11:23:17.908029 132612905645888 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260422_093106/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260422_093106_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776856975.8500512, 'wait_for_prev_duration_secs': 21.720943450927734, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776856997.572957, 'checkpointer_blocking_duration_secs': 0.33278584480285645, 'get_old_steps_start_time': 1776856997.905768, 'get_old_steps_duration_secs': 3.0040740966796875e-05, 'checkpoint_manager_blocking_start_time': 1776856975.8484478, 'checkpoint_manager_blocking_duration_secs': 22.059545755386353}
I0422 11:23:17.908210 132612905645888 checkpointing.py:409] Started an asynchronous checkpoint save for step 9
I0422 11:23:17.908259 132612905645888 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0422 11:23:23.714282 132465083541248 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 69 array_metadata.ArrayMetadata to gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260422_093106/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260422_093106_07_eval/checkpoints/9/items/array_metadatas/process_6
I0422 11:23:59.127022 132484729652992 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 38.277 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.26776576042175 s) (per-host)
I0422 11:23:59.127168 132484729652992 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.221460s.
I0422 11:24:08.997023 132484729652992 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 51.091301s.
I0422 11:24:08.997361 132484738045696 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save.
I0422 11:24:08.997482 132484738045696 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save.
I0422 11:24:08.997528 132484738045696 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0422 11:24:09.003306 132484738045696 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0422 11:24:09.003492 132612905645888 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9.
I0422 11:24:09.003664 132612905645888 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0422 11:24:09.004616 132612905645888 metric_logger.py:196] completed step: 9, seconds: 0.148, TFLOP/s/device: 91.955, Tokens/s/device: 13860.502, 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: Wed Apr 22 11:24:19 UTC 2026
EXIT_CODE=0