MaxView

XPK Start: Mon Apr 20 10:22:26 UTC 2026
PyTorch was not found. Models won't be available and only tokenizers, configuration and file/data utilities can be used.
2026-04-20 10:23:05.277365: 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)
I0420 10:23:05.454863 136757847754560 max_utils.py:273] Attempting to initialize the jax distributed system...
I0420 10:23:14.493827 136757847754560 distributed.py:149] Starting JAX distributed service on [::]:8482
I0420 10:23:14.496047 136757847754560 distributed.py:172] Connecting to JAX distributed service on mt-10-shardy-true-lyhu0-slice-job-0-0.mt-10-shardy-true-lyhu0:8482
I0420 10:23:21.724528 136757847754560 max_utils.py:284] Jax distributed system initialized!
I0420 10:23:28.238297 136757847754560 max_utils.py:800] System Information: Jax Version: 0.9.2
I0420 10:23:28.238400 136757847754560 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0420 10:23:28.238439 136757847754560 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
I0420 10:23:28.238474 136757847754560 train_utils.py:378] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0420 10:23:29.294331 136757847754560 maxtext_utils.py:1718] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0420 10:23:29.408397 136757847754560 checkpointing.py:688] Setting up checkpoint logger...
I0420 10:23:29.408507 136757847754560 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True
I0420 10:23:29.408554 136757847754560 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0420 10:23:29.408773 136757847754560 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 0x7c60cc918680>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0420 10:23:32.088557 136757847754560 checkpointing.py:266] Enabling policy for fixed interval checkpointing.
I0420 10:23:32.088775 136757847754560 checkpoint_manager.py:708] [process=5][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7c5fa78421b0>}, handler_registry=None
I0420 10:23:32.089007 136757847754560 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7c5fa78421b0>` 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`.
I0420 10:23:32.089054 136757847754560 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7c5fa78ab5c0>` 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`.
I0420 10:23:32.089090 136757847754560 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 0x7c5fa78421b0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7c5fa78421b0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7c5fa78ab5c0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7c5fa78ab5c0>}).
I0420 10:23:32.089400 136757847754560 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0420 10:23:32.089470 136757847754560 async_checkpointer.py:192] [process=5][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7c4c7bee0fe0> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0420 10:23:32.884396 136757847754560 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260420_081533/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260420_081533_10_shardy_true/checkpoints
I0420 10:23:33.052482 136757847754560 checkpoint_manager.py:929] [process=5][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_20260420_081533/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260420_081533_10_shardy_true/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7c5fa78c2360>
I0420 10:23:33.052665 136757847754560 checkpointing.py:302] Checkpoint manager created!
I0420 10:23:34.018509 136757847754560 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint
I0420 10:23:34.018632 136757847754560 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint.
fsdp: 32

I0420 10:23:35.761405 136757847754560 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0420 10:23:35.761497 136757847754560 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0420 10:23:35.767858 136757847754560 nnx_decoders.py:465] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0420 10:23:35.767914 136757847754560 nnx_decoders.py:465] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0420 10:23:35.783842 136757847754560 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0420 10:23:35.783900 136757847754560 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0420 10:23:35.799097 136757847754560 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0420 10:23:35.799151 136757847754560 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0420 10:23:35.822770 136757847754560 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0420 10:23:35.822836 136757847754560 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0420 10:23:35.838553 136757847754560 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0420 10:23:35.838628 136757847754560 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0420 10:23:35.854021 136757847754560 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0420 10:23:35.854077 136757847754560 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0420 10:23:35.883457 136757847754560 attentions.py:1197] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0420 10:23:35.883525 136757847754560 attentions.py:1197] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0420 10:23:35.903330 136757847754560 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0420 10:23:35.903390 136757847754560 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0420 10:23:46.851946 136757847754560 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.
I0420 10:23:46.854325 136757847754560 metric_logger.py:301] number parameters: 1.104 billion
I0420 10:23:58.098570 136757847754560 checkpointing.py:794] Waiting for step 0 to finish before checkpoint...
I0420 10:23:58.250756 136757847754560 checkpointing.py:798] Waited 0.15217328071594238 seconds for step 0 to finish before starting checkpointing.
I0420 10:23:58.253296 136757847754560 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0420 10:23:58.255276 136757847754560 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 0
I0420 10:23:58.256550 136757847754560 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260420_081533/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260420_081533_10_shardy_true/checkpoints/0.
I0420 10:23:58.980396 136757847754560 signaling_client.py:364] Using JaxDistributedSignalingClient
I0420 10:23:58.981374 136757847754560 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array.
I0420 10:23:58.981432 136757847754560 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
I0420 10:23:59.256779 136757847754560 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.277129s
I0420 10:23:59.256958 136757847754560 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 5.392 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.28606534004211426 s) (per-host)
I0420 10:23:59.257009 136757847754560 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.286127s (batch_requests_ready=0.002939s, total_serialization_initiated=0.283117s, others=0.000071s)
I0420 10:23:59.257102 136757847754560 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.290179s (all_items=0.000018s, per_item={'items': '0.00001764'}, temp_paths=0.290161)
I0420 10:23:59.257831 136757847754560 event_tracking.py:125] [process=5] [async] Finished blocking save in 1.00 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260420_081533/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260420_081533_10_shardy_true/checkpoints/0.
I0420 10:23:59.258110 136629675456256 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-20 10:43:59.258087
I0420 10:23:59.268181 136757847754560 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0420 10:23:59.268436 136626973959936 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save.
I0420 10:23:59.268556 136757847754560 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260420_081533/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260420_081533_10_shardy_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776680638.2532775, 'wait_for_prev_duration_secs': 5.91278076171875e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776680638.255316, 'checkpointer_blocking_duration_secs': 1.0028948783874512, 'get_old_steps_start_time': 1776680639.2582326, 'get_old_steps_duration_secs': 2.8848648071289062e-05, 'checkpoint_manager_blocking_start_time': 1776680638.2511537, 'checkpoint_manager_blocking_duration_secs': 1.0173652172088623}
I0420 10:23:59.268679 136757847754560 checkpointing.py:409] Started an asynchronous checkpoint save for step 0
I0420 10:23:59.268744 136757847754560 max_utils.py:750] 
Memstats: After params initialized:
I0420 10:23:59.268792 136757847754560 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_18(process=5,(2,4,0,0))
I0420 10:23:59.268823 136757847754560 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_19(process=5,(3,4,0,0))
I0420 10:23:59.268849 136757847754560 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_22(process=5,(2,5,0,0))
I0420 10:23:59.268872 136757847754560 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_23(process=5,(3,5,0,0))
I0420 10:23:59.589719 136757847754560 metric_logger.py:196] completed step: 0, seconds: 11.243, TFLOP/s/device: 1.208, Tokens/s/device: 182.155, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52786.469
I0420 10:23:59.755205 136757847754560 metric_logger.py:196] completed step: 1, seconds: 1.489, TFLOP/s/device: 9.124, Tokens/s/device: 1375.244, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52786.469
I0420 10:24:00.155042 136757847754560 metric_logger.py:196] completed step: 2, seconds: 0.019, TFLOP/s/device: 712.375, Tokens/s/device: 107376.920, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28632.133
I0420 10:24:00.302688 136757847754560 metric_logger.py:196] completed step: 3, seconds: 0.390, TFLOP/s/device: 34.853, Tokens/s/device: 5253.410, total_weights: 65536, loss: 9.732, lm_loss: 9.732, perplexity: 16855.789
I0420 10:24:00.598565 136757847754560 metric_logger.py:196] completed step: 4, seconds: 0.164, TFLOP/s/device: 82.609, Tokens/s/device: 12451.740, total_weights: 65536, loss: 9.274, lm_loss: 9.274, perplexity: 10661.594
I0420 10:24:00.606287 136757847754560 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.308, Tokens/s/device: 13913.705, total_weights: 65536, loss: 8.888, lm_loss: 8.888, perplexity: 7245.978
I0420 10:24:02.390368    2811 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0420 10:24:05.445315 136628051838720 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 69 array_metadata.ArrayMetadata to gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260420_081533/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260420_081533_10_shardy_true/checkpoints/0/items/array_metadatas/process_5
I0420 10:24:24.273977 136757847754560 metric_logger.py:196] completed step: 6, seconds: 0.297, TFLOP/s/device: 45.787, Tokens/s/device: 6901.525, total_weights: 65536, loss: 8.589, lm_loss: 8.589, perplexity: 5371.156
I0420 10:24:24.421552 136757847754560 metric_logger.py:196] completed step: 7, seconds: 23.521, TFLOP/s/device: 0.578, Tokens/s/device: 87.070, total_weights: 65536, loss: 8.380, lm_loss: 8.380, perplexity: 4360.465
I0420 10:24:24.569212 136757847754560 metric_logger.py:196] completed step: 8, seconds: 0.153, TFLOP/s/device: 88.568, Tokens/s/device: 13349.934, total_weights: 65536, loss: 8.251, lm_loss: 8.251, perplexity: 3831.256
I0420 10:24:24.717445 136757847754560 checkpointing.py:794] Waiting for step 9 to finish before checkpoint...
I0420 10:24:24.718125 136757847754560 checkpointing.py:798] Waited 0.0006928443908691406 seconds for step 9 to finish before starting checkpointing.
I0420 10:24:24.720069 136757847754560 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0420 10:24:35.727842 136629675456256 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 42.974 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 36.75691199302673 s) (per-host)
I0420 10:24:35.727949 136629675456256 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 36.469768s.
I0420 10:24:43.102819 136629675456256 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 43.844610s.
I0420 10:24:43.103039 136626973959936 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save.
I0420 10:24:43.103106 136626973959936 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save.
I0420 10:24:43.103154 136626973959936 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0420 10:24:43.105464 136626973959936 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0420 10:24:43.105670 136757847754560 checkpoint_manager.py:2032] [process=5][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0.
W0420 10:24:43.105816 136757847754560 checkpoint_manager.py:1452] Waiting for previous save to complete took 18.385748 seconds. If this number is high, consider checkpointing less frequently.
I0420 10:24:43.107621 136757847754560 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 9
I0420 10:24:43.109660 136757847754560 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260420_081533/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260420_081533_10_shardy_true/checkpoints/9.
I0420 10:24:43.414378 136757847754560 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array.
I0420 10:24:43.414470 136757847754560 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
I0420 10:24:43.448251 136757847754560 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.035444s
I0420 10:24:43.448418 136757847754560 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 36.399 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04237937927246094 s) (per-host)
I0420 10:24:43.448471 136757847754560 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.042440s (batch_requests_ready=0.002637s, total_serialization_initiated=0.039734s, others=0.000069s)
I0420 10:24:43.448569 136757847754560 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.046663s (all_items=0.000016s, per_item={'items': '0.00001645'}, temp_paths=0.046647)
I0420 10:24:43.449306 136757847754560 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.34 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260420_081533/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260420_081533_10_shardy_true/checkpoints/9.
I0420 10:24:43.449628 136626973959936 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-20 10:44:43.449579
I0420 10:24:43.451568 136757847754560 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0420 10:24:43.451845 136622653814528 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save.
I0420 10:24:43.451995 136757847754560 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260420_081533/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260420_081533_10_shardy_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776680664.7200384, 'wait_for_prev_duration_secs': 18.3857479095459, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776680683.10766, 'checkpointer_blocking_duration_secs': 0.34210848808288574, 'get_old_steps_start_time': 1776680683.449791, 'get_old_steps_duration_secs': 3.361701965332031e-05, 'checkpoint_manager_blocking_start_time': 1776680664.7183523, 'checkpoint_manager_blocking_duration_secs': 18.73360824584961}
I0420 10:24:43.452109 136757847754560 checkpointing.py:409] Started an asynchronous checkpoint save for step 9
I0420 10:24:43.452154 136757847754560 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0420 10:24:49.064144 136628051838720 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 69 array_metadata.ArrayMetadata to gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260420_081533/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260420_081533_10_shardy_true/checkpoints/9/items/array_metadatas/process_5
I0420 10:25:25.563410 136626973959936 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 37.469 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.157344818115234 s) (per-host)
I0420 10:25:25.563512 136626973959936 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.113771s.
I0420 10:25:32.578474 136626973959936 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 49.128718s.
I0420 10:25:32.578747 136622653814528 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save.
I0420 10:25:32.578992 136622653814528 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save.
I0420 10:25:32.579042 136622653814528 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0420 10:25:32.581475 136622653814528 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0420 10:25:32.581661 136757847754560 checkpoint_manager.py:2032] [process=5][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9.
I0420 10:25:32.581841 136757847754560 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0420 10:25:32.582751 136757847754560 metric_logger.py:196] completed step: 9, seconds: 0.148, TFLOP/s/device: 91.850, Tokens/s/device: 13844.667, 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: Mon Apr 20 10:25:41 UTC 2026
EXIT_CODE=0