XPK Start: Wed Apr 22 11:35:54 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. 2026-04-22 11:36:18.834729: 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 11:36:19.046300 132512478820160 max_utils.py:273] Attempting to initialize the jax distributed system... I0422 11:36:28.087109 132512478820160 distributed.py:149] Starting JAX distributed service on [::]:8482 I0422 11:36:28.089555 132512478820160 distributed.py:172] Connecting to JAX distributed service on mt-10-shardy-true-vyovj-slice-job-0-0.mt-10-shardy-true-vyovj:8482 I0422 11:36:29.150949 132512478820160 max_utils.py:284] Jax distributed system initialized! I0422 11:36:35.306134 132512478820160 max_utils.py:800] System Information: Jax Version: 0.9.2 I0422 11:36:35.306238 132512478820160 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0422 11:36:35.306279 132512478820160 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 11:36:35.306314 132512478820160 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0422 11:36:35.994910 132512478820160 maxtext_utils.py:1732] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0422 11:36:36.110636 132512478820160 checkpointing.py:688] Setting up checkpoint logger... I0422 11:36:36.110769 132512478820160 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0422 11:36:36.110816 132512478820160 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0422 11:36:36.111022 132512478820160 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 0x78846d5f25d0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0422 11:36:39.012861 132512478820160 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0422 11:36:39.013062 132512478820160 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 0x78702013f860>}, handler_registry=None I0422 11:36:39.013298 132512478820160 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x78702013f860>` 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 11:36:39.013346 132512478820160 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x787020113620>` 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 11:36:39.013383 132512478820160 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 0x78702013f860>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x78702013f860>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x787020113620>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x787020113620>}). I0422 11:36:39.013721 132512478820160 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0422 11:36:39.013792 132512478820160 async_checkpointer.py:192] [process=5][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x786f103cf560> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0422 11:36:39.856758 132512478820160 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_10_shardy_true/checkpoints I0422 11:36:39.895164 132512478820160 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_20260422_093106/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260422_093106_10_shardy_true/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7870084fdd60> I0422 11:36:39.895311 132512478820160 checkpointing.py:302] Checkpoint manager created! I0422 11:36:40.852799 132512478820160 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0422 11:36:40.852920 132512478820160 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0422 11:36:42.630799 132512478820160 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0422 11:36:42.630898 132512478820160 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0422 11:36:42.636414 132512478820160 nnx_decoders.py:465] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0422 11:36:42.636471 132512478820160 nnx_decoders.py:465] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0422 11:36:42.653038 132512478820160 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0422 11:36:42.653098 132512478820160 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0422 11:36:42.668753 132512478820160 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0422 11:36:42.668807 132512478820160 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0422 11:36:42.693586 132512478820160 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 11:36:42.693666 132512478820160 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 11:36:42.709640 132512478820160 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 11:36:42.709718 132512478820160 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 11:36:42.725514 132512478820160 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 11:36:42.725577 132512478820160 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 11:36:42.755507 132512478820160 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0422 11:36:42.755576 132512478820160 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 11:36:42.775332 132512478820160 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0422 11:36:42.775397 132512478820160 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0422 11:36:53.809634 132512478820160 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 11:36:53.812097 132512478820160 metric_logger.py:301] number parameters: 1.104 billion I0422 11:37:04.901331 132512478820160 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0422 11:37:05.053580 132512478820160 checkpointing.py:798] Waited 0.15223407745361328 seconds for step 0 to finish before starting checkpointing. I0422 11:37:05.056130 132512478820160 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0422 11:37:05.057757 132512478820160 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 0 I0422 11:37:05.059291 132512478820160 event_tracking.py:70] [process=5] [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_10_shardy_true/checkpoints/0. I0422 11:37:05.788676 132512478820160 signaling_client.py:364] Using JaxDistributedSignalingClient I0422 11:37:05.789515 132512478820160 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0422 11:37:05.789573 132512478820160 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 11:37:06.071766 132512478820160 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.283871s I0422 11:37:06.071937 132512478820160 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 5.264 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.29306459426879883 s) (per-host) I0422 11:37:06.071990 132512478820160 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.293127s (batch_requests_ready=0.003029s, total_serialization_initiated=0.290028s, others=0.000069s) I0422 11:37:06.072086 132512478820160 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.297287s (all_items=0.000018s, per_item={'items': '0.00001836'}, temp_paths=0.297268) I0422 11:37:06.072925 132512478820160 event_tracking.py:125] [process=5] [async] Finished blocking save in 1.02 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_10_shardy_true/checkpoints/0. I0422 11:37:06.073269 132384196368128 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 11:57:06.073227 I0422 11:37:06.077089 132512478820160 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0422 11:37:06.077326 132381533005568 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0422 11:37:06.077478 132512478820160 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_10_shardy_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776857825.056111, 'wait_for_prev_duration_secs': 6.079673767089844e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776857825.0577946, 'checkpointer_blocking_duration_secs': 1.0156278610229492, 'get_old_steps_start_time': 1776857826.0734475, 'get_old_steps_duration_secs': 3.0517578125e-05, 'checkpoint_manager_blocking_start_time': 1776857825.0539904, 'checkpoint_manager_blocking_duration_secs': 1.0234506130218506} I0422 11:37:06.077586 132512478820160 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0422 11:37:06.077665 132512478820160 max_utils.py:750] Memstats: After params initialized: I0422 11:37:06.077715 132512478820160 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_18(process=5,(2,4,0,0)) I0422 11:37:06.077750 132512478820160 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_19(process=5,(3,4,0,0)) I0422 11:37:06.077778 132512478820160 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_22(process=5,(2,5,0,0)) I0422 11:37:06.077803 132512478820160 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_23(process=5,(3,5,0,0)) I0422 11:37:06.396029 132512478820160 metric_logger.py:196] completed step: 0, seconds: 11.088, TFLOP/s/device: 1.225, Tokens/s/device: 184.702, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52786.469 I0422 11:37:06.562071 132512478820160 metric_logger.py:196] completed step: 1, seconds: 1.493, TFLOP/s/device: 9.101, Tokens/s/device: 1371.818, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52786.469 I0422 11:37:06.993704 132512478820160 metric_logger.py:196] completed step: 2, seconds: 0.020, TFLOP/s/device: 680.309, Tokens/s/device: 102543.561, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28632.133 I0422 11:37:07.141515 132512478820160 metric_logger.py:196] completed step: 3, seconds: 0.421, TFLOP/s/device: 32.259, Tokens/s/device: 4862.483, total_weights: 65536, loss: 9.732, lm_loss: 9.732, perplexity: 16855.789 I0422 11:37:07.437264 132512478820160 metric_logger.py:196] completed step: 4, seconds: 0.165, TFLOP/s/device: 82.549, Tokens/s/device: 12442.738, total_weights: 65536, loss: 9.274, lm_loss: 9.274, perplexity: 10661.594 I0422 11:37:07.444603 132512478820160 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.308, Tokens/s/device: 13913.611, total_weights: 65536, loss: 8.888, lm_loss: 8.888, perplexity: 7245.978 I0422 11:37:09.563995 2807 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0422 11:37:11.574015 132382044698368 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_20260422_093106/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260422_093106_10_shardy_true/checkpoints/0/items/array_metadatas/process_5 I0422 11:37:29.305854 132512478820160 metric_logger.py:196] completed step: 6, seconds: 0.296, TFLOP/s/device: 45.856, Tokens/s/device: 6911.914, total_weights: 65536, loss: 8.589, lm_loss: 8.589, perplexity: 5371.156 I0422 11:37:29.453384 132512478820160 metric_logger.py:196] completed step: 7, seconds: 21.715, TFLOP/s/device: 0.626, Tokens/s/device: 94.312, total_weights: 65536, loss: 8.380, lm_loss: 8.380, perplexity: 4360.465 I0422 11:37:29.601067 132512478820160 metric_logger.py:196] completed step: 8, seconds: 0.153, TFLOP/s/device: 88.742, Tokens/s/device: 13376.179, total_weights: 65536, loss: 8.251, lm_loss: 8.251, perplexity: 3831.256 I0422 11:37:29.749335 132512478820160 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0422 11:37:29.749974 132512478820160 checkpointing.py:798] Waited 0.0006518363952636719 seconds for step 9 to finish before starting checkpointing. I0422 11:37:29.751890 132512478820160 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0422 11:37:43.536777 132384196368128 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 41.835 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 37.757866859436035 s) (per-host) I0422 11:37:43.536900 132384196368128 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 37.463522s. I0422 11:37:51.265567 132384196368128 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 45.192170s. I0422 11:37:51.265860 132381533005568 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0422 11:37:51.265989 132381533005568 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0422 11:37:51.266042 132381533005568 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0422 11:37:51.268432 132381533005568 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0422 11:37:51.268626 132512478820160 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. W0422 11:37:51.268779 132512478820160 checkpoint_manager.py:1452] Waiting for previous save to complete took 21.516889 seconds. If this number is high, consider checkpointing less frequently. I0422 11:37:51.270787 132512478820160 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 9 I0422 11:37:51.272791 132512478820160 event_tracking.py:70] [process=5] [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_10_shardy_true/checkpoints/9. I0422 11:37:51.590990 132512478820160 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0422 11:37:51.591081 132512478820160 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 11:37:51.626808 132512478820160 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.037344s I0422 11:37:51.626979 132512478820160 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 34.710 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04444169998168945 s) (per-host) I0422 11:37:51.627034 132512478820160 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.044507s (batch_requests_ready=0.002725s, total_serialization_initiated=0.041709s, others=0.000074s) I0422 11:37:51.627134 132512478820160 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.048598s (all_items=0.000015s, per_item={'items': '0.00001478'}, temp_paths=0.048584) I0422 11:37:51.627865 132512478820160 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.36 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_10_shardy_true/checkpoints/9. I0422 11:37:51.628160 132381533005568 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 11:57:51.628132 I0422 11:37:51.630105 132512478820160 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0422 11:37:51.630393 132358736963328 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0422 11:37:51.630558 132512478820160 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_10_shardy_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776857849.7518601, 'wait_for_prev_duration_secs': 21.516888856887817, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776857871.2708275, 'checkpointer_blocking_duration_secs': 0.3574509620666504, 'get_old_steps_start_time': 1776857871.6283042, 'get_old_steps_duration_secs': 2.9325485229492188e-05, 'checkpoint_manager_blocking_start_time': 1776857849.7502182, 'checkpoint_manager_blocking_duration_secs': 21.88030457496643} I0422 11:37:51.630680 132512478820160 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0422 11:37:51.630728 132512478820160 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0422 11:37:58.199476 132382044698368 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_20260422_093106/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260422_093106_10_shardy_true/checkpoints/9/items/array_metadatas/process_5 I0422 11:38:34.485021 132381533005568 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 36.818 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.90244770050049 s) (per-host) I0422 11:38:34.485144 132381533005568 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.856891s. I0422 11:38:43.025680 132381533005568 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 51.397399s. I0422 11:38:43.025939 132358736963328 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0422 11:38:43.026062 132358736963328 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0422 11:38:43.026111 132358736963328 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0422 11:38:43.027717 132358736963328 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0422 11:38:43.027893 132512478820160 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. I0422 11:38:43.028059 132512478820160 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0422 11:38:43.028966 132512478820160 metric_logger.py:196] completed step: 9, seconds: 0.148, TFLOP/s/device: 91.964, Tokens/s/device: 13861.815, 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 11:38:54 UTC 2026 EXIT_CODE=0