XPK Start: Sat Apr 25 14:41:09 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. 2026-04-25 14:41:34.593165: 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) I0425 14:41:35.169565 133283340851008 max_utils.py:273] Attempting to initialize the jax distributed system... I0425 14:41:44.210675 133283340851008 distributed.py:149] Starting JAX distributed service on [::]:8482 I0425 14:41:44.213136 133283340851008 distributed.py:172] Connecting to JAX distributed service on mt-15-ocdbt-false-rs-16rhj-slice-job-0-0.mt-15-ocdbt-false-rs-16rhj:8482 I0425 14:41:45.336944 133283340851008 max_utils.py:284] Jax distributed system initialized! I0425 14:41:51.432499 133283340851008 max_utils.py:800] System Information: Jax Version: 0.9.2 I0425 14:41:51.432607 133283340851008 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0425 14:41:51.432645 133283340851008 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 I0425 14:41:51.432679 133283340851008 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0425 14:41:52.142918 133283340851008 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0425 14:41:52.259745 133283340851008 checkpointing.py:688] Setting up checkpoint logger... I0425 14:41:52.259866 133283340851008 checkpointing.py:234] Creating checkpoint manager with ocdbt=False and zarr3=True I0425 14:41:52.259916 133283340851008 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0425 14:41:52.260126 133283340851008 base_pytree_checkpoint_handler.py:441] Created BasePyTreeCheckpointHandler: use_ocdbt=False, use_zarr3=True, pytree_metadata_options=PyTreeMetadataOptions(support_rich_types=False), array_metadata_store=<orbax.checkpoint._src.metadata.array_metadata_store.Store object at 0x7937ba84d790>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0425 14:41:53.602335 133283340851008 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0425 14:41:53.602573 133283340851008 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 0x79235c2aaf90>}, handler_registry=None I0425 14:41:53.602811 133283340851008 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x79235c2aaf90>` 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`. I0425 14:41:53.602861 133283340851008 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x79235c265850>` 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`. I0425 14:41:53.602900 133283340851008 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 0x79235c2aaf90>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x79235c2aaf90>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x79235c265850>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x79235c265850>}). I0425 14:41:53.603237 133283340851008 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0425 14:41:53.603310 133283340851008 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x79235c23b1a0> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0425 14:41:55.458998 133161652557568 checkpoint.py:228] Read Metadata={'item_handlers': {'items': 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler'}, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1777127937994855215, 'commit_timestamp_nsecs': 1777127953096526690, 'custom_metadata': {}} from gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_15_ocdbt_false/checkpoints/0/_CHECKPOINT_METADATA I0425 14:41:55.707549 133161652557568 checkpoint_manager.py:1871] Missing metrics for step 0 I0425 14:41:55.737854 133283340851008 checkpoint_manager.py:1812] Found 3 checkpoint steps in gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_15_ocdbt_false/checkpoints I0425 14:41:56.484734 133283340851008 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=5), 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_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_15_ocdbt_false/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x792278498c80> I0425 14:41:56.484903 133283340851008 checkpointing.py:302] Checkpoint manager created! I0425 14:41:57.473777 133283340851008 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0425 14:41:57.473904 133283340851008 checkpointing.py:582] restoring from this run's directory step 9 I0425 14:41:57.717643 133283340851008 event_tracking.py:70] [process=6] [sync] Started load checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_15_ocdbt_false/checkpoints/9. I0425 14:41:58.229089 133283340851008 checkpointer.py:307] Restoring checkpoint from gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_15_ocdbt_false/checkpoints/9. I0425 14:41:58.229543 133283340851008 event_tracking.py:125] [process=6] [sync] Finished blocking load in 0.51 seconds. Continuing load @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_15_ocdbt_false/checkpoints/9. I0425 14:42:01.091668 1492 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0425 14:42:10.130313 133283340851008 jax_array_handlers.py:843] [process=6] /jax/orbax/read/worker/io/requested throughput: 154.589 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 10.222454071044922 s) (per-host) I0425 14:42:10.142032 133283340851008 base_pytree_checkpoint_handler.py:130] [process=6] /jax/checkpoint/read/gbytes_per_sec: 146.535 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 10.80018424987793 s) (per-host) I0425 14:42:10.405744 133283340851008 event_tracking.py:138] [process=6] [sync] Finished load in 12.69 seconds @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_15_ocdbt_false/checkpoints/9 I0425 14:42:10.405903 133283340851008 standard_logger.py:34] {'step': 9, 'event_type': 'restore', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_15_ocdbt_false/checkpoints', 'checkpointer_start_time': 1777128117.7175436, 'checkpointer_duration_secs': 12.688327074050903, 'checkpoint_manager_start_time': 1777128117.4745352, 'checkpoint_manager_duration_secs': 12.931336879730225} fsdp: 32 I0425 14:42:10.482504 133283340851008 maxtext_utils.py:1889] decoder/decoder_norm/scale/value Shape: float32[2048] Physical: (None,) I0425 14:42:10.482619 133283340851008 maxtext_utils.py:1889] decoder/layers/mlp/wi_0/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, None) I0425 14:42:10.482669 133283340851008 maxtext_utils.py:1889] decoder/layers/mlp/wi_1/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, None) I0425 14:42:10.482711 133283340851008 maxtext_utils.py:1889] decoder/layers/mlp/wo/kernel/value Shape: float32[7168,16,2048] Physical: (None, None, 'fsdp') I0425 14:42:10.482748 133283340851008 maxtext_utils.py:1889] decoder/layers/post_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: (None, None) I0425 14:42:10.482783 133283340851008 maxtext_utils.py:1889] decoder/layers/pre_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: (None, None) I0425 14:42:10.482819 133283340851008 maxtext_utils.py:1889] decoder/layers/self_attention/key/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0425 14:42:10.482854 133283340851008 maxtext_utils.py:1889] decoder/layers/self_attention/out/kernel/value Shape: float32[16,16,128,2048] Physical: (None, None, None, 'fsdp') I0425 14:42:10.482887 133283340851008 maxtext_utils.py:1889] decoder/layers/self_attention/query/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0425 14:42:10.482919 133283340851008 maxtext_utils.py:1889] decoder/layers/self_attention/value/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0425 14:42:10.482951 133283340851008 maxtext_utils.py:1889] decoder/logits_dense/kernel/value Shape: float32[2048,32000] Physical: ('fsdp', None) I0425 14:42:10.482982 133283340851008 maxtext_utils.py:1889] token_embedder/embedding/value Shape: float32[32000,2048] Physical: (None, 'fsdp') I0425 14:42:10.885966 133283340851008 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0425 14:42:10.886071 133283340851008 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 14:42:10.891624 133283340851008 nnx_decoders.py:465] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0425 14:42:10.891682 133283340851008 nnx_decoders.py:465] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 14:42:10.908302 133283340851008 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch_attn', 'activation_length_attn', 'activation_embed_attn'). I0425 14:42:10.908363 133283340851008 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 14:42:10.924369 133283340851008 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch_attn', 'activation_length_attn', 'activation_embed_attn'). I0425 14:42:10.924432 133283340851008 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 14:42:10.948943 133283340851008 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim'). I0425 14:42:10.949012 133283340851008 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 14:42:10.965199 133283340851008 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim'). I0425 14:42:10.965260 133283340851008 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 14:42:10.981451 133283340851008 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim'). I0425 14:42:10.981511 133283340851008 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 14:42:11.018495 133283340851008 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch_attn', 'activation_length_attn', 'activation_heads', 'activation_kv'). I0425 14:42:11.018600 133283340851008 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 14:42:11.039599 133283340851008 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0425 14:42:11.039669 133283340851008 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0425 14:42:22.280882 133283340851008 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. I0425 14:42:22.283334 133283340851008 metric_logger.py:301] number parameters: 1.104 billion I0425 14:42:33.521291 133283340851008 checkpointing.py:794] Waiting for step 10 to finish before checkpoint... I0425 14:42:33.673690 133283340851008 checkpointing.py:798] Waited 0.15238499641418457 seconds for step 10 to finish before starting checkpointing. I0425 14:42:33.675928 133283340851008 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0425 14:42:33.678217 133283340851008 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 10 I0425 14:42:33.679655 133283340851008 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_15_ocdbt_false/checkpoints/10. I0425 14:42:34.016112 133283340851008 signaling_client.py:364] Using JaxDistributedSignalingClient I0425 14:42:34.016966 133283340851008 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0425 14:42:34.017026 133283340851008 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 I0425 14:42:34.297035 133283340851008 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.281729s I0425 14:42:34.297217 133283340851008 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.344 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2886488437652588 s) (per-host) I0425 14:42:34.297270 133283340851008 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.288713s (batch_requests_ready=0.002528s, total_serialization_initiated=0.286112s, others=0.000072s) I0425 14:42:34.297375 133283340851008 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.292916s (all_items=0.000017s, per_item={'items': '0.00001693'}, temp_paths=0.292899) I0425 14:42:34.298052 133283340851008 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.62 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_15_ocdbt_false/checkpoints/10. I0425 14:42:34.298409 133158532011776 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 15:02:34.298369 I0425 14:42:34.324593 133283340851008 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=10] Starting CheckpointManager Save Finalize thread=save_finalize I0425 14:42:34.324926 133157969962752 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0425 14:42:34.325082 133283340851008 standard_logger.py:34] {'step': 10, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_15_ocdbt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777128153.67591, 'wait_for_prev_duration_secs': 6.127357482910156e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777128153.6782575, 'checkpointer_blocking_duration_secs': 0.6203064918518066, 'get_old_steps_start_time': 1777128154.2985892, 'get_old_steps_duration_secs': 3.4809112548828125e-05, 'checkpoint_manager_blocking_start_time': 1777128153.6740615, 'checkpoint_manager_blocking_duration_secs': 0.6509842872619629} I0425 14:42:34.325206 133283340851008 checkpointing.py:409] Started an asynchronous checkpoint save for step 10 I0425 14:42:34.325276 133283340851008 max_utils.py:750] Memstats: After params initialized: I0425 14:42:34.325328 133283340851008 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_24(process=6,(0,6,0,0)) I0425 14:42:34.325361 133283340851008 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_25(process=6,(1,6,0,0)) I0425 14:42:34.325387 133283340851008 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_28(process=6,(0,7,0,0)) I0425 14:42:34.325412 133283340851008 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_29(process=6,(1,7,0,0)) I0425 14:42:34.650438 133283340851008 metric_logger.py:196] completed step: 10, seconds: 11.237, TFLOP/s/device: 1.209, Tokens/s/device: 182.258, total_weights: 65536, loss: 6.827, lm_loss: 6.827, perplexity: 922.537 I0425 14:42:34.840223 133283340851008 metric_logger.py:196] completed step: 11, seconds: 1.127, TFLOP/s/device: 12.052, Tokens/s/device: 1816.547, total_weights: 65536, loss: 6.522, lm_loss: 6.522, perplexity: 679.821 I0425 14:42:34.987708 133283340851008 metric_logger.py:196] completed step: 12, seconds: 0.032, TFLOP/s/device: 427.040, Tokens/s/device: 64368.105, total_weights: 65536, loss: 6.260, lm_loss: 6.260, perplexity: 523.013 I0425 14:42:35.135171 133283340851008 metric_logger.py:196] completed step: 13, seconds: 0.166, TFLOP/s/device: 81.669, Tokens/s/device: 12309.986, total_weights: 65536, loss: 6.039, lm_loss: 6.039, perplexity: 419.520 I0425 14:42:35.141714 133283340851008 checkpointing.py:794] Waiting for step 15 to finish before checkpoint... I0425 14:42:35.430424 133283340851008 checkpointing.py:798] Waited 0.2886805534362793 seconds for step 15 to finish before starting checkpointing. I0425 14:42:35.433058 133283340851008 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=10][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0425 14:42:39.419876 133158011926272 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_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_15_ocdbt_false/checkpoints/10/items/array_metadatas/process_6 I0425 14:42:44.787311 133158532011776 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 146.548 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 10.778705835342407 s) (per-host) I0425 14:42:44.787460 133158532011776 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 10.488933s. I0425 14:42:51.559726 133158532011776 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 17.261184s. I0425 14:42:51.559983 133157969962752 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0425 14:42:51.560132 133157969962752 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0425 14:42:51.560184 133157969962752 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=10] CheckpointManager Save Finalize is syncing with other hosts... I0425 14:42:51.561786 133157969962752 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=10] CheckpointManager Save Finalize is done on all hosts. I0425 14:42:51.561987 133283340851008 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=10][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=10. W0425 14:42:51.562143 133283340851008 checkpoint_manager.py:1452] Waiting for previous save to complete took 16.129086 seconds. If this number is high, consider checkpointing less frequently. I0425 14:42:51.564190 133283340851008 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 15 I0425 14:42:51.566832 133283340851008 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_15_ocdbt_false/checkpoints/15. I0425 14:42:51.847882 133283340851008 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0425 14:42:51.847975 133283340851008 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 I0425 14:42:51.874532 133283340851008 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.028205s I0425 14:42:51.874662 133283340851008 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 43.500 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.03546142578125 s) (per-host) I0425 14:42:51.874711 133283340851008 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.035518s (batch_requests_ready=0.002966s, total_serialization_initiated=0.032489s, others=0.000063s) I0425 14:42:51.874788 133283340851008 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.040390s (all_items=0.000012s, per_item={'items': '0.00001240'}, temp_paths=0.040377) I0425 14:42:51.875468 133283340851008 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.31 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_15_ocdbt_false/checkpoints/15. I0425 14:42:51.875763 133157969962752 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 15:02:51.875730 I0425 14:42:51.898738 133283340851008 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=15] Starting CheckpointManager Save Finalize thread=save_finalize I0425 14:42:51.899000 133157961570048 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0425 14:42:51.899142 133283340851008 standard_logger.py:34] {'step': 15, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_15_ocdbt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777128155.4330277, 'wait_for_prev_duration_secs': 16.129086017608643, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777128171.564229, 'checkpointer_blocking_duration_secs': 0.3116745948791504, 'get_old_steps_start_time': 1777128171.8759267, 'get_old_steps_duration_secs': 3.314018249511719e-05, 'checkpoint_manager_blocking_start_time': 1777128155.4307964, 'checkpoint_manager_blocking_duration_secs': 16.4683096408844} I0425 14:42:51.899256 133283340851008 checkpointing.py:409] Started an asynchronous checkpoint save for step 15 I0425 14:42:51.900426 133283340851008 metric_logger.py:196] completed step: 14, seconds: 0.147, TFLOP/s/device: 92.596, Tokens/s/device: 13957.134, total_weights: 65536, loss: 5.858, lm_loss: 5.858, perplexity: 350.067 I0425 14:42:51.908363 133283340851008 metric_logger.py:196] completed step: 15, seconds: 0.148, TFLOP/s/device: 91.878, Tokens/s/device: 13848.880, total_weights: 65536, loss: 5.713, lm_loss: 5.713, perplexity: 302.780 I0425 14:42:57.030331 133158011926272 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_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_15_ocdbt_false/checkpoints/15/items/array_metadatas/process_6 I0425 14:43:01.973765 133157969962752 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 155.863 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 10.134522438049316 s) (per-host) I0425 14:43:01.973896 133157969962752 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 10.098020s. I0425 14:43:09.866812 133157969962752 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 17.990920s. I0425 14:43:09.867056 133157961570048 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0425 14:43:09.867146 133157961570048 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0425 14:43:09.867194 133157961570048 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=15] CheckpointManager Save Finalize is syncing with other hosts... I0425 14:43:09.868974 133157961570048 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=15] CheckpointManager Save Finalize is done on all hosts. I0425 14:43:13.359192 133283340851008 metric_logger.py:196] completed step: 16, seconds: 16.765, TFLOP/s/device: 0.810, Tokens/s/device: 122.161, total_weights: 65536, loss: 5.599, lm_loss: 5.599, perplexity: 270.201 I0425 14:43:13.507088 133283340851008 metric_logger.py:196] completed step: 17, seconds: 21.306, TFLOP/s/device: 0.638, Tokens/s/device: 96.124, total_weights: 65536, loss: 5.511, lm_loss: 5.511, perplexity: 247.443 I0425 14:43:13.654634 133283340851008 metric_logger.py:196] completed step: 18, seconds: 0.153, TFLOP/s/device: 88.540, Tokens/s/device: 13345.671, total_weights: 65536, loss: 5.442, lm_loss: 5.442, perplexity: 230.909 I0425 14:43:13.803255 133283340851008 checkpointing.py:794] Waiting for step 19 to finish before checkpoint... I0425 14:43:13.804010 133283340851008 checkpointing.py:798] Waited 0.0007677078247070312 seconds for step 19 to finish before starting checkpointing. I0425 14:43:13.806387 133283340851008 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0425 14:43:13.808177 133283340851008 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 19 I0425 14:43:13.809671 133283340851008 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_15_ocdbt_false/checkpoints/19. I0425 14:43:14.131117 133283340851008 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0425 14:43:14.131268 133283340851008 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 I0425 14:43:14.157116 133283340851008 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.027514s I0425 14:43:14.157242 133283340851008 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 44.494 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.03466916084289551 s) (per-host) I0425 14:43:14.157295 133283340851008 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.034732s (batch_requests_ready=0.002673s, total_serialization_initiated=0.031991s, others=0.000067s) I0425 14:43:14.157370 133283340851008 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.039480s (all_items=0.000010s, per_item={'items': '0.00001001'}, temp_paths=0.039470) I0425 14:43:14.158156 133283340851008 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.35 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_15_ocdbt_false/checkpoints/19. I0425 14:43:14.158471 133157961570048 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 15:03:14.158435 I0425 14:43:14.162142 133283340851008 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=19] Starting CheckpointManager Save Finalize thread=save_finalize I0425 14:43:14.162414 133154220259072 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0425 14:43:14.162573 133283340851008 standard_logger.py:34] {'step': 19, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_15_ocdbt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777128193.806349, 'wait_for_prev_duration_secs': 0.0001232624053955078, 'time_between_consecutive_saves_sec': 3.937335968017578, 'checkpointer_blocking_start_time': 1777128193.8082163, 'checkpointer_blocking_duration_secs': 0.35041046142578125, 'get_old_steps_start_time': 1777128194.1586454, 'get_old_steps_duration_secs': 2.6464462280273438e-05, 'checkpoint_manager_blocking_start_time': 1777128193.804418, 'checkpoint_manager_blocking_duration_secs': 0.3581199645996094} I0425 14:43:14.162684 133283340851008 checkpointing.py:409] Started an asynchronous checkpoint save for step 19 I0425 14:43:14.162732 133283340851008 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=19][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0425 14:43:19.223383 133158011926272 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_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_15_ocdbt_false/checkpoints/19/items/array_metadatas/process_6 I0425 14:43:24.039649 133157961570048 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 159.281 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 9.91703748703003 s) (per-host) I0425 14:43:24.039770 133157961570048 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 9.881173s. I0425 14:43:29.993714 133157961570048 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 15.835100s. I0425 14:43:29.994055 133154220259072 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0425 14:43:29.994219 133154220259072 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0425 14:43:29.994262 133154220259072 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=19] CheckpointManager Save Finalize is syncing with other hosts... I0425 14:43:29.995589 133154220259072 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=19] CheckpointManager Save Finalize is done on all hosts. I0425 14:43:29.995761 133283340851008 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=19][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=19. I0425 14:43:29.995923 133283340851008 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0425 14:43:29.996949 133283340851008 metric_logger.py:196] completed step: 19, seconds: 0.148, TFLOP/s/device: 91.692, Tokens/s/device: 13820.842, total_weights: 65536, loss: 5.385, lm_loss: 5.385, perplexity: 218.045 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops XPK End: Sat Apr 25 14:43:40 UTC 2026 EXIT_CODE=0