XPK Start: Sun Apr 19 01:29:43 UTC 2026 PyTorch was not found. Models won't be available and only tokenizers, configuration and file/data utilities can be used. 2026-04-19 01:30:07.727170: 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) I0419 01:30:07.907216 135571520059200 max_utils.py:273] Attempting to initialize the jax distributed system... I0419 01:30:16.946435 135571520059200 distributed.py:149] Starting JAX distributed service on [::]:8482 I0419 01:30:16.948685 135571520059200 distributed.py:172] Connecting to JAX distributed service on mt-03-dropout-nau1x-slice-job-0-0.mt-03-dropout-nau1x:8482 I0419 01:30:18.419432 135571520059200 max_utils.py:284] Jax distributed system initialized! I0419 01:30:24.462013 135571520059200 max_utils.py:800] System Information: Jax Version: 0.9.2 I0419 01:30:24.462114 135571520059200 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0419 01:30:24.462153 135571520059200 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 I0419 01:30:24.462187 135571520059200 train_utils.py:378] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0419 01:30:25.157864 135571520059200 maxtext_utils.py:1718] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0419 01:30:25.269862 135571520059200 checkpointing.py:688] Setting up checkpoint logger... I0419 01:30:25.269975 135571520059200 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0419 01:30:25.270018 135571520059200 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0419 01:30:25.270225 135571520059200 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 0x7b4c7cb4cfb0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0419 01:30:28.595527 135571520059200 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0419 01:30:28.595760 135571520059200 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 0x7b3710163770>}, handler_registry=None I0419 01:30:28.596009 135571520059200 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7b3710163770>` 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`. I0419 01:30:28.596057 135571520059200 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7b3710160440>` 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`. I0419 01:30:28.596091 135571520059200 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 0x7b3710163770>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7b3710163770>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7b3710160440>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7b3710160440>}). I0419 01:30:28.596423 135571520059200 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0419 01:30:28.596495 135571520059200 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7b37101f0fe0> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0419 01:30:32.707976 135571520059200 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260418_235007/nnx_xpk_feat_nnx_post_train_fixes_20260418_235007_03_dropout/checkpoints I0419 01:30:33.718605 135571520059200 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_post_train_fixes_20260418_235007/nnx_xpk_feat_nnx_post_train_fixes_20260418_235007_03_dropout/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7b37101ae0c0> I0419 01:30:33.718771 135571520059200 checkpointing.py:302] Checkpoint manager created! I0419 01:30:34.095014 135571520059200 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0419 01:30:34.095127 135571520059200 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0419 01:30:35.464098 135571520059200 maxtext_utils.py:1836] decoder/decoder_norm/scale/value Shape: float32[2048] Physical: (None,) I0419 01:30:35.464229 135571520059200 maxtext_utils.py:1836] decoder/layers/mlp/wi_0/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, None) I0419 01:30:35.464322 135571520059200 maxtext_utils.py:1836] decoder/layers/mlp/wi_1/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, None) I0419 01:30:35.464386 135571520059200 maxtext_utils.py:1836] decoder/layers/mlp/wo/kernel/value Shape: float32[7168,16,2048] Physical: (None, None, 'fsdp') I0419 01:30:35.464440 135571520059200 maxtext_utils.py:1836] decoder/layers/post_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: (None, None) I0419 01:30:35.464491 135571520059200 maxtext_utils.py:1836] decoder/layers/pre_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: (None, None) I0419 01:30:35.464550 135571520059200 maxtext_utils.py:1836] decoder/layers/self_attention/key/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0419 01:30:35.464611 135571520059200 maxtext_utils.py:1836] decoder/layers/self_attention/out/kernel/value Shape: float32[16,16,128,2048] Physical: (None, None, None, 'fsdp') I0419 01:30:35.464673 135571520059200 maxtext_utils.py:1836] decoder/layers/self_attention/query/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0419 01:30:35.464737 135571520059200 maxtext_utils.py:1836] decoder/layers/self_attention/value/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0419 01:30:35.464797 135571520059200 maxtext_utils.py:1836] decoder/logits_dense/kernel/value Shape: float32[2048,32000] Physical: ('fsdp', None) I0419 01:30:35.464859 135571520059200 maxtext_utils.py:1836] token_embedder/embedding/value Shape: float32[32000,2048] Physical: (None, 'fsdp') I0419 01:30:35.873610 135571520059200 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0419 01:30:35.873702 135571520059200 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None). I0419 01:30:35.879926 135571520059200 nnx_decoders.py:465] Unknown Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0419 01:30:35.879984 135571520059200 nnx_decoders.py:465] Unknown Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None). I0419 01:30:35.896501 135571520059200 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0419 01:30:35.896567 135571520059200 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None). I0419 01:30:35.912483 135571520059200 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0419 01:30:35.912549 135571520059200 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None). I0419 01:30:35.936646 135571520059200 attentions.py:1154] attentions/query Logical: bfloat16[32,128,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0419 01:30:35.936713 135571520059200 attentions.py:1154] attentions/query Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None). I0419 01:30:35.952602 135571520059200 attentions.py:1155] attentions/key Logical: bfloat16[32,128,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0419 01:30:35.952662 135571520059200 attentions.py:1155] attentions/key Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None). I0419 01:30:35.968569 135571520059200 attentions.py:1156] attentions/value Logical: bfloat16[32,128,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0419 01:30:35.968634 135571520059200 attentions.py:1156] attentions/value Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None). I0419 01:30:35.999061 135571520059200 attentions.py:1197] attentions/out Logical: bfloat16[32,128,16,128]..................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0419 01:30:35.999136 135571520059200 attentions.py:1197] attentions/out Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None). I0419 01:30:36.025734 135571520059200 linears.py:525] linears/x Logical: bfloat16[32,128,7168]....................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0419 01:30:36.025802 135571520059200 linears.py:525] linears/x Physical: bfloat16[32,128,7168]....................................... ('fsdp', None, None). I0419 01:30:39.818457 135571520059200 max_utils.py:791] Total memory size: 0.8 GB, Output size: 0.4 GB, Temp size: 0.4 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB. I0419 01:30:39.820922 135571520059200 metric_logger.py:301] number parameters: 1.104 billion I0419 01:30:43.865880 135571520059200 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0419 01:30:43.938865 135571520059200 checkpointing.py:798] Waited 0.07297563552856445 seconds for step 0 to finish before starting checkpointing. I0419 01:30:43.941437 135571520059200 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0419 01:30:43.943417 135571520059200 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 0 I0419 01:30:43.944945 135571520059200 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260418_235007/nnx_xpk_feat_nnx_post_train_fixes_20260418_235007_03_dropout/checkpoints/0. I0419 01:30:45.083772 135571520059200 signaling_client.py:364] Using JaxDistributedSignalingClient I0419 01:30:45.084791 135571520059200 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0419 01:30:45.084856 135571520059200 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 I0419 01:30:45.367695 135571520059200 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.284725s I0419 01:30:45.367864 135571520059200 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.249 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2938823699951172 s) (per-host) I0419 01:30:45.367917 135571520059200 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.293943s (batch_requests_ready=0.003035s, total_serialization_initiated=0.290839s, others=0.000069s) I0419 01:30:45.368031 135571520059200 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.298181s (all_items=0.000019s, per_item={'items': '0.00001860'}, temp_paths=0.298162) I0419 01:30:45.368860 135571520059200 event_tracking.py:125] [process=6] [async] Finished blocking save in 1.43 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260418_235007/nnx_xpk_feat_nnx_post_train_fixes_20260418_235007_03_dropout/checkpoints/0. I0419 01:30:45.369220 135441827215104 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-19 01:50:45.369181 I0419 01:30:45.382586 135571520059200 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0419 01:30:45.382879 135440757679872 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0419 01:30:45.383034 135571520059200 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260418_235007/nnx_xpk_feat_nnx_post_train_fixes_20260418_235007_03_dropout/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776562243.941418, 'wait_for_prev_duration_secs': 6.246566772460938e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776562243.9434555, 'checkpointer_blocking_duration_secs': 1.4259402751922607, 'get_old_steps_start_time': 1776562245.3694217, 'get_old_steps_duration_secs': 3.0279159545898438e-05, 'checkpoint_manager_blocking_start_time': 1776562243.9392276, 'checkpoint_manager_blocking_duration_secs': 1.4437689781188965} I0419 01:30:45.383137 135571520059200 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0419 01:30:45.383202 135571520059200 max_utils.py:750] Memstats: After params initialized: I0419 01:30:45.383266 135571520059200 max_utils.py:756] Using (GB) 0.41 / 31.25 (1.312000%) on TPU_24(process=6,(0,6,0,0)) I0419 01:30:45.383301 135571520059200 max_utils.py:756] Using (GB) 0.41 / 31.25 (1.312000%) on TPU_25(process=6,(1,6,0,0)) I0419 01:30:45.383328 135571520059200 max_utils.py:756] Using (GB) 0.41 / 31.25 (1.312000%) on TPU_28(process=6,(0,7,0,0)) I0419 01:30:45.383353 135571520059200 max_utils.py:756] Using (GB) 0.41 / 31.25 (1.312000%) on TPU_29(process=6,(1,7,0,0)) I0419 01:30:45.700817 135571520059200 metric_logger.py:196] completed step: 0, seconds: 4.044, TFLOP/s/device: 0.198, Tokens/s/device: 31.653, total_weights: 4096, loss: 10.874, lm_loss: 10.874, perplexity: 52805.141 I0419 01:30:45.795851 135571520059200 metric_logger.py:196] completed step: 1, seconds: 1.833, TFLOP/s/device: 0.437, Tokens/s/device: 69.834, total_weights: 4096, loss: 10.892, lm_loss: 10.892, perplexity: 53764.488 I0419 01:30:46.208224 135571520059200 metric_logger.py:196] completed step: 2, seconds: 0.025, TFLOP/s/device: 31.518, Tokens/s/device: 5037.387, total_weights: 4096, loss: 9.969, lm_loss: 9.969, perplexity: 21350.100 I0419 01:30:46.278855 135571520059200 metric_logger.py:196] completed step: 3, seconds: 0.403, TFLOP/s/device: 1.989, Tokens/s/device: 317.834, total_weights: 4096, loss: 9.125, lm_loss: 9.125, perplexity: 9186.262 I0419 01:30:46.420688 135571520059200 metric_logger.py:196] completed step: 4, seconds: 0.087, TFLOP/s/device: 9.159, Tokens/s/device: 1463.811, total_weights: 4096, loss: 8.469, lm_loss: 8.469, perplexity: 4765.735 I0419 01:30:46.428298 135571520059200 metric_logger.py:196] completed step: 5, seconds: 0.070, TFLOP/s/device: 11.429, Tokens/s/device: 1826.614, total_weights: 4096, loss: 7.908, lm_loss: 7.908, perplexity: 2719.938 I0419 01:30:48.242372 2807 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0419 01:30:50.186921 135441810429696 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_20260418_235007/nnx_xpk_feat_nnx_post_train_fixes_20260418_235007_03_dropout/checkpoints/0/items/array_metadatas/process_6 I0419 01:30:56.931004 135571520059200 metric_logger.py:196] completed step: 6, seconds: 0.143, TFLOP/s/device: 5.616, Tokens/s/device: 897.534, total_weights: 4096, loss: 7.554, lm_loss: 7.554, perplexity: 1909.063 I0419 01:30:57.001282 135571520059200 metric_logger.py:196] completed step: 7, seconds: 10.433, TFLOP/s/device: 0.077, Tokens/s/device: 12.269, total_weights: 4096, loss: 7.313, lm_loss: 7.313, perplexity: 1500.206 I0419 01:30:57.071956 135571520059200 metric_logger.py:196] completed step: 8, seconds: 0.077, TFLOP/s/device: 10.428, Tokens/s/device: 1666.580, total_weights: 4096, loss: 7.091, lm_loss: 7.091, perplexity: 1200.912 I0419 01:30:57.143104 135571520059200 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0419 01:30:57.143797 135571520059200 checkpointing.py:798] Waited 0.0007028579711914062 seconds for step 9 to finish before starting checkpointing. I0419 01:30:57.145737 135571520059200 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0419 01:31:17.483382 135441827215104 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 48.739 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 32.40934419631958 s) (per-host) I0419 01:31:17.483513 135441827215104 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 32.114167s. I0419 01:31:28.016375 135441827215104 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 42.647005s. I0419 01:31:28.016663 135440757679872 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0419 01:31:28.016781 135440757679872 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0419 01:31:28.016833 135440757679872 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0419 01:31:28.019175 135440757679872 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0419 01:31:28.019434 135571520059200 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. W0419 01:31:28.019570 135571520059200 checkpoint_manager.py:1452] Waiting for previous save to complete took 30.873832 seconds. If this number is high, consider checkpointing less frequently. I0419 01:31:28.021366 135571520059200 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 9 I0419 01:31:28.023421 135571520059200 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260418_235007/nnx_xpk_feat_nnx_post_train_fixes_20260418_235007_03_dropout/checkpoints/9. I0419 01:31:29.169365 135571520059200 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0419 01:31:29.169465 135571520059200 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 I0419 01:31:29.204490 135571520059200 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.036744s I0419 01:31:29.204660 135571520059200 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 35.133 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.043906450271606445 s) (per-host) I0419 01:31:29.204724 135571520059200 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.043979s (batch_requests_ready=0.002708s, total_serialization_initiated=0.041188s, others=0.000082s) I0419 01:31:29.204840 135571520059200 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.048009s (all_items=0.000016s, per_item={'items': '0.00001597'}, temp_paths=0.047993) I0419 01:31:29.205552 135571520059200 event_tracking.py:125] [process=6] [async] Finished blocking save in 1.18 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260418_235007/nnx_xpk_feat_nnx_post_train_fixes_20260418_235007_03_dropout/checkpoints/9. I0419 01:31:29.205841 135440757679872 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-19 01:51:29.205808 I0419 01:31:29.207907 135571520059200 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0419 01:31:29.208137 135441810429696 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0419 01:31:29.208283 135571520059200 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260418_235007/nnx_xpk_feat_nnx_post_train_fixes_20260418_235007_03_dropout/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776562257.1457074, 'wait_for_prev_duration_secs': 30.87383198738098, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776562288.0214055, 'checkpointer_blocking_duration_secs': 1.1845755577087402, 'get_old_steps_start_time': 1776562289.2060058, 'get_old_steps_duration_secs': 2.86102294921875e-05, 'checkpoint_manager_blocking_start_time': 1776562257.1440263, 'checkpoint_manager_blocking_duration_secs': 32.064202070236206} I0419 01:31:29.208461 135571520059200 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0419 01:31:29.208518 135571520059200 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0419 01:31:35.910939 135418943006464 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_20260418_235007/nnx_xpk_feat_nnx_post_train_fixes_20260418_235007_03_dropout/checkpoints/9/items/array_metadatas/process_6 I0419 01:32:10.826186 135440757679872 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 37.911 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.665395975112915 s) (per-host) I0419 01:32:10.826328 135440757679872 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.620380s. I0419 01:32:19.475131 135440757679872 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 50.269167s. I0419 01:32:19.475364 135441810429696 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0419 01:32:19.475429 135441810429696 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0419 01:32:19.475476 135441810429696 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0419 01:32:19.478378 135441810429696 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0419 01:32:19.478627 135571520059200 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. I0419 01:32:19.478808 135571520059200 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0419 01:32:19.479818 135571520059200 metric_logger.py:196] completed step: 9, seconds: 0.071, TFLOP/s/device: 11.252, Tokens/s/device: 1798.384, total_weights: 4096, loss: 7.016, lm_loss: 7.016, perplexity: 1113.843 Per train step: Total TFLOPs: 0.80 split as 99.60% learnable weight flops and 0.40% attention flops XPK End: Sun Apr 19 01:32:30 UTC 2026 EXIT_CODE=0