XPK Start: Thu Apr 23 11:45:36 UTC 2026 PyTorch was not found. Models won't be available and only tokenizers, configuration and file/data utilities can be used. `rope_parameters`'s factor field must be a float >= 1, got 40 `rope_parameters`'s beta_fast field must be a float, got 32 `rope_parameters`'s beta_slow field must be a float, got 1 DeepseekV32Config got `key=rope_scaling` in kwargs but hasn't set it as attribute. For RoPE standardization you need to set `self.rope_parameters` in model's config. 2026-04-23 11:46:01.656860: E external/local_xla/xla/stream_executor/cuda/cuda_platform.cc:51] failed call to cuInit: INTERNAL: CUDA error: Failed call to cuInit: UNKNOWN ERROR (303) I0423 11:46:01.867444 133698785412928 max_utils.py:273] Attempting to initialize the jax distributed system... I0423 11:46:10.909187 133698785412928 distributed.py:149] Starting JAX distributed service on [::]:8482 I0423 11:46:10.911522 133698785412928 distributed.py:172] Connecting to JAX distributed service on mt-10-shardy-false-iprjt-slice-job-0-0.mt-10-shardy-false-iprjt:8482 I0423 11:46:11.814378 133698785412928 max_utils.py:284] Jax distributed system initialized! I0423 11:46:18.023853 133698785412928 max_utils.py:800] System Information: Jax Version: 0.9.2 I0423 11:46:18.023957 133698785412928 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0423 11:46:18.023997 133698785412928 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 I0423 11:46:18.024033 133698785412928 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0423 11:46:18.720013 133698785412928 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0423 11:46:18.833808 133698785412928 checkpointing.py:688] Setting up checkpoint logger... I0423 11:46:18.833932 133698785412928 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0423 11:46:18.833977 133698785412928 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0423 11:46:18.834191 133698785412928 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 0x79988b919b50>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0423 11:46:21.697327 133698785412928 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0423 11:46:21.697531 133698785412928 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 0x7984504cc470>}, handler_registry=None I0423 11:46:21.697770 133698785412928 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7984504cc470>` for item "items" and save args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>` to `_handler_registry`. I0423 11:46:21.697820 133698785412928 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7984383cc800>` for item "metrics" and save args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>` to `_handler_registry`. I0423 11:46:21.697855 133698785412928 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 0x7984504cc470>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7984504cc470>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7984383cc800>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7984383cc800>}). I0423 11:46:21.698209 133698785412928 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0423 11:46:21.698282 133698785412928 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x798438343740> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0423 11:46:22.550975 133698785412928 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806_10_shardy_false/checkpoints I0423 11:46:23.042468 133698785412928 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_20260423_093806/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806_10_shardy_false/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7984502ae990> I0423 11:46:23.042644 133698785412928 checkpointing.py:302] Checkpoint manager created! I0423 11:46:24.008391 133698785412928 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0423 11:46:24.008519 133698785412928 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0423 11:46:25.793014 133698785412928 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0423 11:46:25.793128 133698785412928 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0423 11:46:25.798597 133698785412928 nnx_decoders.py:465] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0423 11:46:25.798656 133698785412928 nnx_decoders.py:465] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0423 11:46:25.815271 133698785412928 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0423 11:46:25.815332 133698785412928 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0423 11:46:25.831112 133698785412928 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0423 11:46:25.831169 133698785412928 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0423 11:46:25.855046 133698785412928 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0423 11:46:25.855126 133698785412928 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0423 11:46:25.871162 133698785412928 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0423 11:46:25.871221 133698785412928 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0423 11:46:25.887121 133698785412928 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0423 11:46:25.887179 133698785412928 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0423 11:46:25.918044 133698785412928 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0423 11:46:25.918135 133698785412928 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0423 11:46:25.937995 133698785412928 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0423 11:46:25.938060 133698785412928 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0423 11:46:37.215834 133698785412928 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. I0423 11:46:37.218220 133698785412928 metric_logger.py:301] number parameters: 1.104 billion I0423 11:46:48.209073 133698785412928 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0423 11:46:48.361361 133698785412928 checkpointing.py:798] Waited 0.15226054191589355 seconds for step 0 to finish before starting checkpointing. I0423 11:46:48.363600 133698785412928 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0423 11:46:48.365352 133698785412928 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 0 I0423 11:46:48.366921 133698785412928 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806_10_shardy_false/checkpoints/0. I0423 11:46:48.660748 133698785412928 signaling_client.py:364] Using JaxDistributedSignalingClient I0423 11:46:48.661689 133698785412928 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0423 11:46:48.661748 133698785412928 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 I0423 11:46:48.942016 133698785412928 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.282052s I0423 11:46:48.942209 133698785412928 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.292 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.29148173332214355 s) (per-host) I0423 11:46:48.942264 133698785412928 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.291546s (batch_requests_ready=0.002961s, total_serialization_initiated=0.288512s, others=0.000073s) I0423 11:46:48.942367 133698785412928 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.295702s (all_items=0.000017s, per_item={'items': '0.00001717'}, temp_paths=0.295685) I0423 11:46:48.943252 133698785412928 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.58 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806_10_shardy_false/checkpoints/0. I0423 11:46:48.943589 133569961408256 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 12:06:48.943545 I0423 11:46:48.947037 133698785412928 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0423 11:46:48.947293 133567804282624 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0423 11:46:48.947417 133698785412928 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806_10_shardy_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776944808.3635812, 'wait_for_prev_duration_secs': 6.556510925292969e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776944808.365392, 'checkpointer_blocking_duration_secs': 0.5783498287200928, 'get_old_steps_start_time': 1776944808.9437673, 'get_old_steps_duration_secs': 2.7894973754882812e-05, 'checkpoint_manager_blocking_start_time': 1776944808.3617508, 'checkpoint_manager_blocking_duration_secs': 0.5856280326843262} I0423 11:46:48.947527 133698785412928 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0423 11:46:48.947593 133698785412928 max_utils.py:750] Memstats: After params initialized: I0423 11:46:48.947644 133698785412928 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_24(process=6,(0,6,0,0)) I0423 11:46:48.947678 133698785412928 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_25(process=6,(1,6,0,0)) I0423 11:46:48.947702 133698785412928 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_28(process=6,(0,7,0,0)) I0423 11:46:48.947724 133698785412928 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_29(process=6,(1,7,0,0)) I0423 11:46:49.264376 133698785412928 metric_logger.py:196] completed step: 0, seconds: 10.990, TFLOP/s/device: 1.236, Tokens/s/device: 186.355, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52786.469 I0423 11:46:49.449780 133698785412928 metric_logger.py:196] completed step: 1, seconds: 1.053, TFLOP/s/device: 12.899, Tokens/s/device: 1944.242, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52786.469 I0423 11:46:49.899782 133698785412928 metric_logger.py:196] completed step: 2, seconds: 0.040, TFLOP/s/device: 343.491, Tokens/s/device: 51774.699, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28632.133 I0423 11:46:50.047351 133698785412928 metric_logger.py:196] completed step: 3, seconds: 0.439, TFLOP/s/device: 30.921, Tokens/s/device: 4660.700, total_weights: 65536, loss: 9.732, lm_loss: 9.732, perplexity: 16855.789 I0423 11:46:50.342879 133698785412928 metric_logger.py:196] completed step: 4, seconds: 0.165, TFLOP/s/device: 82.539, Tokens/s/device: 12441.226, total_weights: 65536, loss: 9.274, lm_loss: 9.274, perplexity: 10661.594 I0423 11:46:50.350590 133698785412928 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.412, Tokens/s/device: 13929.320, total_weights: 65536, loss: 8.888, lm_loss: 8.888, perplexity: 7245.978 I0423 11:46:52.002893 2867 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0423 11:46:54.037274 133568369907456 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_20260423_093806/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806_10_shardy_false/checkpoints/0/items/array_metadatas/process_6 I0423 11:47:12.516741 133698785412928 metric_logger.py:196] completed step: 6, seconds: 0.296, TFLOP/s/device: 45.860, Tokens/s/device: 6912.450, total_weights: 65536, loss: 8.589, lm_loss: 8.589, perplexity: 5371.156 I0423 11:47:12.664800 133698785412928 metric_logger.py:196] completed step: 7, seconds: 22.020, TFLOP/s/device: 0.617, Tokens/s/device: 93.006, total_weights: 65536, loss: 8.380, lm_loss: 8.380, perplexity: 4360.465 I0423 11:47:12.812892 133698785412928 metric_logger.py:196] completed step: 8, seconds: 0.153, TFLOP/s/device: 88.587, Tokens/s/device: 13352.806, total_weights: 65536, loss: 8.251, lm_loss: 8.251, perplexity: 3831.256 I0423 11:47:12.960963 133698785412928 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0423 11:47:12.961654 133698785412928 checkpointing.py:798] Waited 0.0007045269012451172 seconds for step 9 to finish before starting checkpointing. I0423 11:47:12.963631 133698785412928 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0423 11:47:26.362655 133569961408256 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 41.886 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 37.711883306503296 s) (per-host) I0423 11:47:26.362778 133569961408256 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 37.419077s. I0423 11:47:34.611652 133569961408256 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 45.667933s. I0423 11:47:34.611868 133567804282624 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0423 11:47:34.611947 133567804282624 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0423 11:47:34.611997 133567804282624 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0423 11:47:34.614127 133567804282624 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0423 11:47:34.614328 133698785412928 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. W0423 11:47:34.614465 133698785412928 checkpoint_manager.py:1452] Waiting for previous save to complete took 21.650835 seconds. If this number is high, consider checkpointing less frequently. I0423 11:47:34.616558 133698785412928 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 9 I0423 11:47:34.618652 133698785412928 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806_10_shardy_false/checkpoints/9. I0423 11:47:34.909552 133698785412928 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0423 11:47:34.909645 133698785412928 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 I0423 11:47:34.943150 133698785412928 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.035191s I0423 11:47:34.943312 133698785412928 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 36.569 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04218244552612305 s) (per-host) I0423 11:47:34.943368 133698785412928 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.042247s (batch_requests_ready=0.002635s, total_serialization_initiated=0.039540s, others=0.000072s) I0423 11:47:34.943463 133698785412928 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.046244s (all_items=0.000016s, per_item={'items': '0.00001621'}, temp_paths=0.046228) I0423 11:47:34.944214 133698785412928 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_20260423_093806/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806_10_shardy_false/checkpoints/9. I0423 11:47:34.944495 133567804282624 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 12:07:34.944471 I0423 11:47:34.946444 133698785412928 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0423 11:47:34.946690 133566725093120 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0423 11:47:34.946792 133698785412928 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806_10_shardy_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776944832.9636004, 'wait_for_prev_duration_secs': 21.650834560394287, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776944854.6165996, 'checkpointer_blocking_duration_secs': 0.32799792289733887, 'get_old_steps_start_time': 1776944854.9446218, 'get_old_steps_duration_secs': 3.1948089599609375e-05, 'checkpoint_manager_blocking_start_time': 1776944832.9618871, 'checkpoint_manager_blocking_duration_secs': 21.984869956970215} I0423 11:47:34.946946 133698785412928 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0423 11:47:34.946992 133698785412928 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0423 11:47:40.009806 133568369907456 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_20260423_093806/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806_10_shardy_false/checkpoints/9/items/array_metadatas/process_6 I0423 11:48:17.232678 133567804282624 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 37.315 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.33150053024292 s) (per-host) I0423 11:48:17.232800 133567804282624 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.288227s. I0423 11:48:24.505940 133567804282624 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 49.561351s. I0423 11:48:24.506163 133566725093120 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0423 11:48:24.506227 133566725093120 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0423 11:48:24.506282 133566725093120 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0423 11:48:24.508237 133566725093120 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0423 11:48:24.508481 133698785412928 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. I0423 11:48:24.508657 133698785412928 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0423 11:48:24.509663 133698785412928 metric_logger.py:196] completed step: 9, seconds: 0.148, TFLOP/s/device: 91.561, Tokens/s/device: 13801.004, 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: Thu Apr 23 11:48:36 UTC 2026 EXIT_CODE=0