MaxView

XPK Start: Tue Apr 21 10:15:03 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 10:15:27.408774: 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 10:15:27.589487 133429600978752 max_utils.py:273] Attempting to initialize the jax distributed system...
I0421 10:15:36.630554 133429600978752 distributed.py:149] Starting JAX distributed service on [::]:8482
I0421 10:15:36.632932 133429600978752 distributed.py:172] Connecting to JAX distributed service on mt-03-dropout-jufgm-slice-job-0-0.mt-03-dropout-jufgm:8482
I0421 10:15:37.709345 133429600978752 max_utils.py:284] Jax distributed system initialized!
I0421 10:15:42.752172 133429600978752 max_utils.py:800] System Information: Jax Version: 0.9.2
I0421 10:15:42.752275 133429600978752 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0421 10:15:42.752316 133429600978752 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 10:15:42.752350 133429600978752 train_utils.py:378] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0421 10:15:43.448380 133429600978752 maxtext_utils.py:1718] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0421 10:15:43.560340 133429600978752 checkpointing.py:688] Setting up checkpoint logger...
I0421 10:15:43.560452 133429600978752 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True
I0421 10:15:43.560497 133429600978752 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0421 10:15:43.560692 133429600978752 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 0x7959e6719160>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0421 10:15:47.735534 133429600978752 checkpointing.py:266] Enabling policy for fixed interval checkpointing.
I0421 10:15:47.735783 133429600978752 checkpoint_manager.py:708] [process=7][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x79462c1a01d0>}, handler_registry=None
I0421 10:15:47.736027 133429600978752 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x79462c1a01d0>` 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 10:15:47.736078 133429600978752 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7945447f0b30>` 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 10:15:47.736115 133429600978752 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 0x79462c1a01d0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x79462c1a01d0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7945447f0b30>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7945447f0b30>}).
I0421 10:15:47.736425 133429600978752 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0421 10:15:47.736495 133429600978752 async_checkpointer.py:192] [process=7][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x79454c4ddb20> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0421 10:15:48.521331 133429600978752 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_083238/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260421_083238_03_dropout/checkpoints
I0421 10:15:48.889015 133429600978752 checkpoint_manager.py:929] [process=7][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_083238/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260421_083238_03_dropout/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x79454c403f50>
I0421 10:15:48.889189 133429600978752 checkpointing.py:302] Checkpoint manager created!
I0421 10:15:49.268750 133429600978752 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint
I0421 10:15:49.268864 133429600978752 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint.
fsdp: 32

I0421 10:15:51.053421 133429600978752 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0421 10:15:51.053514 133429600978752 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None).
I0421 10:15:51.059652 133429600978752 nnx_decoders.py:465] Unknown Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0421 10:15:51.059710 133429600978752 nnx_decoders.py:465] Unknown Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None).
I0421 10:15:51.076142 133429600978752 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0421 10:15:51.076210 133429600978752 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None).
I0421 10:15:51.091954 133429600978752 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0421 10:15:51.092009 133429600978752 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None).
I0421 10:15:51.115959 133429600978752 attentions.py:1154] attentions/query Logical: bfloat16[32,128,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0421 10:15:51.116029 133429600978752 attentions.py:1154] attentions/query Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None).
I0421 10:15:51.131922 133429600978752 attentions.py:1155] attentions/key Logical: bfloat16[32,128,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0421 10:15:51.131985 133429600978752 attentions.py:1155] attentions/key Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None).
I0421 10:15:51.147788 133429600978752 attentions.py:1156] attentions/value Logical: bfloat16[32,128,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0421 10:15:51.147849 133429600978752 attentions.py:1156] attentions/value Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None).
I0421 10:15:51.183214 133429600978752 attentions.py:1197] attentions/out Logical: bfloat16[32,128,16,128]..................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0421 10:15:51.183315 133429600978752 attentions.py:1197] attentions/out Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None).
I0421 10:15:51.209889 133429600978752 linears.py:525] linears/x Logical: bfloat16[32,128,7168]....................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0421 10:15:51.209959 133429600978752 linears.py:525] linears/x Physical: bfloat16[32,128,7168]....................................... ('fsdp', None, None).
I0421 10:15:54.844994 133429600978752 max_utils.py:791] Total memory size: 0.8 GB, Output size: 0.4 GB, Temp size: 0.4 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB.
I0421 10:15:54.847343 133429600978752 metric_logger.py:301] number parameters: 1.104 billion
I0421 10:15:58.858884 133429600978752 checkpointing.py:794] Waiting for step 0 to finish before checkpoint...
I0421 10:15:58.931445 133429600978752 checkpointing.py:798] Waited 0.07254958152770996 seconds for step 0 to finish before starting checkpointing.
I0421 10:15:58.934115 133429600978752 checkpoint_manager.py:2009] [process=7][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0421 10:15:58.935966 133429600978752 checkpoint_manager.py:1512] [process=7] Saving checkpoint at step 0
I0421 10:15:58.937421 133429600978752 event_tracking.py:70] [process=7] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_083238/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260421_083238_03_dropout/checkpoints/0.
I0421 10:15:59.224694 133429600978752 signaling_client.py:364] Using JaxDistributedSignalingClient
I0421 10:15:59.225687 133429600978752 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array.
I0421 10:15:59.225760 133429600978752 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 10:15:59.503119 133429600978752 base_pytree_checkpoint_handler.py:154] [process=7][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.279191s
I0421 10:15:59.503284 133429600978752 base_pytree_checkpoint_handler.py:130] [process=7] /jax/orbax/write/blocking_gbytes_per_sec: 5.353 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2881937026977539 s) (per-host)
I0421 10:15:59.503334 133429600978752 base_pytree_checkpoint_handler.py:768] [process=7][thread=MainThread] Initiated Pytree async_save. Time taken: 0.288253s (batch_requests_ready=0.002975s, total_serialization_initiated=0.285212s, others=0.000066s)
I0421 10:15:59.503427 133429600978752 composite_checkpoint_handler.py:715] [process=7][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.292355s (all_items=0.000018s, per_item={'items': '0.00001812'}, temp_paths=0.292336)
I0421 10:15:59.504176 133429600978752 event_tracking.py:125] [process=7] [async] Finished blocking save in 0.57 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_083238/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260421_083238_03_dropout/checkpoints/0.
I0421 10:15:59.504519 133304510576384 async_checkpointer.py:76] [process=7][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-21 10:35:59.504480
I0421 10:15:59.511340 133429600978752 checkpoint_manager.py:1560] [process=7][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0421 10:15:59.511590 133301259986688 async_checkpointer.py:280] [process=7][thread=save_finalize] Waiting for background save thread=async_save.
I0421 10:15:59.511713 133429600978752 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_083238/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260421_083238_03_dropout/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776766558.9340928, 'wait_for_prev_duration_secs': 0.00010633468627929688, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776766558.9360106, 'checkpointer_blocking_duration_secs': 0.568671703338623, 'get_old_steps_start_time': 1776766559.5047085, 'get_old_steps_duration_secs': 4.9114227294921875e-05, 'checkpoint_manager_blocking_start_time': 1776766558.9320068, 'checkpoint_manager_blocking_duration_secs': 0.5796658992767334}
I0421 10:15:59.511833 133429600978752 checkpointing.py:409] Started an asynchronous checkpoint save for step 0
I0421 10:15:59.511901 133429600978752 max_utils.py:750] 
Memstats: After params initialized:
I0421 10:15:59.511951 133429600978752 max_utils.py:756] 	Using (GB) 0.41 / 31.25 (1.312000%) on TPU_26(process=7,(2,6,0,0))
I0421 10:15:59.511982 133429600978752 max_utils.py:756] 	Using (GB) 0.41 / 31.25 (1.312000%) on TPU_27(process=7,(3,6,0,0))
I0421 10:15:59.512008 133429600978752 max_utils.py:756] 	Using (GB) 0.41 / 31.25 (1.312000%) on TPU_30(process=7,(2,7,0,0))
I0421 10:15:59.512033 133429600978752 max_utils.py:756] 	Using (GB) 0.41 / 31.25 (1.312000%) on TPU_31(process=7,(3,7,0,0))
I0421 10:15:59.830659 133429600978752 metric_logger.py:196] completed step: 0, seconds: 4.010, TFLOP/s/device: 0.200, Tokens/s/device: 31.917, total_weights: 4096, loss: 10.874, lm_loss: 10.874, perplexity: 52805.141
I0421 10:15:59.925083 133429600978752 metric_logger.py:196] completed step: 1, seconds: 0.970, TFLOP/s/device: 0.826, Tokens/s/device: 131.970, total_weights: 4096, loss: 10.892, lm_loss: 10.892, perplexity: 53764.488
I0421 10:16:00.330093 133429600978752 metric_logger.py:196] completed step: 2, seconds: 0.025, TFLOP/s/device: 31.528, Tokens/s/device: 5038.973, total_weights: 4096, loss: 9.969, lm_loss: 9.969, perplexity: 21350.100
I0421 10:16:00.400639 133429600978752 metric_logger.py:196] completed step: 3, seconds: 0.395, TFLOP/s/device: 2.029, Tokens/s/device: 324.290, total_weights: 4096, loss: 9.125, lm_loss: 9.125, perplexity: 9186.262
I0421 10:16:00.542478 133429600978752 metric_logger.py:196] completed step: 4, seconds: 0.088, TFLOP/s/device: 9.138, Tokens/s/device: 1460.454, total_weights: 4096, loss: 8.469, lm_loss: 8.469, perplexity: 4765.735
I0421 10:16:00.550215 133429600978752 metric_logger.py:196] completed step: 5, seconds: 0.070, TFLOP/s/device: 11.470, Tokens/s/device: 1833.207, total_weights: 4096, loss: 7.908, lm_loss: 7.908, perplexity: 2719.938
I0421 10:16:02.729543    2776 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0421 10:16:05.223627 133302321555200 array_metadata_store.py:203] [process=7][thread=array_type_handler] Wrote 69 array_metadata.ArrayMetadata to gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_083238/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260421_083238_03_dropout/checkpoints/0/items/array_metadatas/process_7
I0421 10:16:10.131773 133429600978752 metric_logger.py:196] completed step: 6, seconds: 0.143, TFLOP/s/device: 5.612, Tokens/s/device: 896.924, total_weights: 4096, loss: 7.554, lm_loss: 7.554, perplexity: 1909.063
I0421 10:16:10.202609 133429600978752 metric_logger.py:196] completed step: 7, seconds: 9.512, TFLOP/s/device: 0.084, Tokens/s/device: 13.456, total_weights: 4096, loss: 7.313, lm_loss: 7.313, perplexity: 1500.206
I0421 10:16:10.273554 133429600978752 metric_logger.py:196] completed step: 8, seconds: 0.076, TFLOP/s/device: 10.490, Tokens/s/device: 1676.578, total_weights: 4096, loss: 7.091, lm_loss: 7.091, perplexity: 1200.912
I0421 10:16:10.344660 133429600978752 checkpointing.py:794] Waiting for step 9 to finish before checkpoint...
I0421 10:16:10.345342 133429600978752 checkpointing.py:798] Waited 0.0006933212280273438 seconds for step 9 to finish before starting checkpointing.
I0421 10:16:10.347291 133429600978752 checkpoint_manager.py:2020] [process=7][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0421 10:16:31.756271 133304510576384 base_pytree_checkpoint_handler.py:130] [process=7] /jax/orbax/write/gbytes_per_sec: 48.542 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 32.54115343093872 s) (per-host)
I0421 10:16:31.756379 133304510576384 async_checkpointer.py:90] [process=7][thread=async_save] 3 Handler Commit operations completed. Time taken: 32.251739s.
I0421 10:16:40.839984 133304510576384 async_checkpointer.py:160] [process=7][thread=async_save] Background save thread done. Time taken: 41.335325s.
I0421 10:16:40.840201 133301259986688 async_checkpointer.py:288] [process=7][thread=save_finalize] Done with waiting for background save thread=async_save.
I0421 10:16:40.840271 133301259986688 async_checkpointer.py:298] [process=7][thread=save_finalize] No errors found in background save thread=async_save.
I0421 10:16:40.840326 133301259986688 checkpoint_manager.py:2137] [process=7][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0421 10:16:40.842114 133301259986688 checkpoint_manager.py:2146] [process=7][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0421 10:16:40.842291 133429600978752 checkpoint_manager.py:2032] [process=7][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0.
W0421 10:16:40.842432 133429600978752 checkpoint_manager.py:1452] Waiting for previous save to complete took 30.495141 seconds. If this number is high, consider checkpointing less frequently.
I0421 10:16:40.844246 133429600978752 checkpoint_manager.py:1512] [process=7] Saving checkpoint at step 9
I0421 10:16:40.846328 133429600978752 event_tracking.py:70] [process=7] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_083238/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260421_083238_03_dropout/checkpoints/9.
I0421 10:16:41.138237 133429600978752 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array.
I0421 10:16:41.138332 133429600978752 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 10:16:41.179436 133429600978752 base_pytree_checkpoint_handler.py:154] [process=7][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.042793s
I0421 10:16:41.179603 133429600978752 base_pytree_checkpoint_handler.py:130] [process=7] /jax/orbax/write/blocking_gbytes_per_sec: 30.968 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.049811363220214844 s) (per-host)
I0421 10:16:41.179652 133429600978752 base_pytree_checkpoint_handler.py:768] [process=7][thread=MainThread] Initiated Pytree async_save. Time taken: 0.049870s (batch_requests_ready=0.002702s, total_serialization_initiated=0.047102s, others=0.000067s)
I0421 10:16:41.179792 133429600978752 composite_checkpoint_handler.py:715] [process=7][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.053939s (all_items=0.000016s, per_item={'items': '0.00001597'}, temp_paths=0.053923)
I0421 10:16:41.180562 133429600978752 event_tracking.py:125] [process=7] [async] Finished blocking save in 0.34 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_083238/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260421_083238_03_dropout/checkpoints/9.
I0421 10:16:41.180923 133301259986688 async_checkpointer.py:76] [process=7][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-21 10:36:41.180887
I0421 10:16:41.183361 133429600978752 checkpoint_manager.py:1560] [process=7][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0421 10:16:41.183650 133302321555200 async_checkpointer.py:280] [process=7][thread=save_finalize] Waiting for background save thread=async_save.
I0421 10:16:41.183820 133429600978752 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_083238/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260421_083238_03_dropout/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776766570.3472612, 'wait_for_prev_duration_secs': 30.49514102935791, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776766600.844286, 'checkpointer_blocking_duration_secs': 0.33678531646728516, 'get_old_steps_start_time': 1776766601.1810958, 'get_old_steps_duration_secs': 3.218650817871094e-05, 'checkpoint_manager_blocking_start_time': 1776766570.3455715, 'checkpoint_manager_blocking_duration_secs': 30.838203191757202}
I0421 10:16:41.184003 133429600978752 checkpointing.py:409] Started an asynchronous checkpoint save for step 9
I0421 10:16:41.184056 133429600978752 checkpoint_manager.py:2020] [process=7][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0421 10:16:46.686557 133277738284800 array_metadata_store.py:203] [process=7][thread=array_type_handler] Wrote 69 array_metadata.ArrayMetadata to gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_083238/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260421_083238_03_dropout/checkpoints/9/items/array_metadatas/process_7
I0421 10:17:21.836921 133301259986688 base_pytree_checkpoint_handler.py:130] [process=7] /jax/orbax/write/gbytes_per_sec: 38.804 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 40.707088232040405 s) (per-host)
I0421 10:17:21.837043 133301259986688 async_checkpointer.py:90] [process=7][thread=async_save] 3 Handler Commit operations completed. Time taken: 40.656004s.
I0421 10:17:30.384225 133301259986688 async_checkpointer.py:160] [process=7][thread=async_save] Background save thread done. Time taken: 49.203169s.
I0421 10:17:30.384498 133302321555200 async_checkpointer.py:288] [process=7][thread=save_finalize] Done with waiting for background save thread=async_save.
I0421 10:17:30.384623 133302321555200 async_checkpointer.py:298] [process=7][thread=save_finalize] No errors found in background save thread=async_save.
I0421 10:17:30.384671 133302321555200 checkpoint_manager.py:2137] [process=7][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0421 10:17:30.386051 133302321555200 checkpoint_manager.py:2146] [process=7][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0421 10:17:30.386225 133429600978752 checkpoint_manager.py:2032] [process=7][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9.
I0421 10:17:30.386400 133429600978752 checkpoint_manager.py:2009] [process=7][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0421 10:17:30.387369 133429600978752 metric_logger.py:196] completed step: 9, seconds: 0.072, TFLOP/s/device: 11.142, Tokens/s/device: 1780.746, total_weights: 4096, loss: 7.016, lm_loss: 7.016, perplexity: 1113.843
Per train step:
 Total TFLOPs: 0.80 
 split as 99.60% learnable weight flops and 0.40% attention flops
XPK End: Tue Apr 21 10:17:38 UTC 2026
EXIT_CODE=0