XPK Start: Sat Apr 25 10:59:39 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 11:00:04.708035: 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 11:00:04.917969 135555356522304 max_utils.py:273] Attempting to initialize the jax distributed system... I0425 11:00:13.958980 135555356522304 distributed.py:149] Starting JAX distributed service on [::]:8482 I0425 11:00:13.961248 135555356522304 distributed.py:172] Connecting to JAX distributed service on mt-06-grad-accum-0kd5v-slice-job-0-0.mt-06-grad-accum-0kd5v:8482 I0425 11:00:15.130986 135555356522304 max_utils.py:284] Jax distributed system initialized! I0425 11:00:21.312704 135555356522304 max_utils.py:800] System Information: Jax Version: 0.9.2 I0425 11:00:21.312809 135555356522304 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0425 11:00:21.312848 135555356522304 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 11:00:21.312882 135555356522304 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0425 11:00:22.009469 135555356522304 maxtext_utils.py:1732] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0425 11:00:22.123158 135555356522304 checkpointing.py:688] Setting up checkpoint logger... I0425 11:00:22.123273 135555356522304 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0425 11:00:22.123325 135555356522304 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0425 11:00:22.123524 135555356522304 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 0x7b48d2f18080>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0425 11:00:25.052170 135555356522304 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0425 11:00:25.052360 135555356522304 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 0x7b33746a9280>}, handler_registry=None I0425 11:00:25.052598 135555356522304 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7b33746a9280>` 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 11:00:25.052646 135555356522304 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7b3464467cb0>` 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 11:00:25.052699 135555356522304 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 0x7b33746a9280>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7b33746a9280>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7b3464467cb0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7b3464467cb0>}). I0425 11:00:25.053022 135555356522304 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0425 11:00:25.053093 135555356522304 async_checkpointer.py:192] [process=5][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7b346443f4c0> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0425 11:00:26.960333 135555356522304 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260425_092114/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260425_092114_06_grad_accum/checkpoints I0425 11:00:26.962512 135555356522304 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_20260425_092114/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260425_092114_06_grad_accum/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7b3464310500> I0425 11:00:26.962627 135555356522304 checkpointing.py:302] Checkpoint manager created! I0425 11:00:28.705448 135555356522304 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0425 11:00:28.705571 135555356522304 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0425 11:00:30.521388 135555356522304 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[2048]............................................... Unknown. I0425 11:00:30.521481 135555356522304 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[2048]............................................... (None,). I0425 11:00:30.536504 135555356522304 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[2048,16,7168]....................................... Unknown. I0425 11:00:30.536559 135555356522304 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[2048,16,7168]....................................... ('fsdp', None, None). I0425 11:00:30.566247 135555356522304 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[7168,16,2048]....................................... Unknown. I0425 11:00:30.566317 135555356522304 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[7168,16,2048]....................................... (None, None, 'fsdp'). I0425 11:00:30.581187 135555356522304 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[2048,16]............................................ Unknown. I0425 11:00:30.581244 135555356522304 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[2048,16]............................................ (None, None). I0425 11:00:30.611156 135555356522304 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[2048,16,16,128]..................................... Unknown. I0425 11:00:30.611222 135555356522304 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[2048,16,16,128]..................................... ('fsdp', None, None, None). I0425 11:00:30.626278 135555356522304 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[16,16,128,2048]..................................... Unknown. I0425 11:00:30.626336 135555356522304 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[16,16,128,2048]..................................... (None, None, None, 'fsdp'). I0425 11:00:30.670603 135555356522304 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[2048,32000]......................................... Unknown. I0425 11:00:30.670691 135555356522304 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[2048,32000]......................................... ('fsdp', None). I0425 11:00:30.685670 135555356522304 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[32000,2048]......................................... Unknown. I0425 11:00:30.685724 135555356522304 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[32000,2048]......................................... (None, 'fsdp'). I0425 11:00:30.908029 135555356522304 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0425 11:00:30.908182 135555356522304 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 11:00:30.914271 135555356522304 nnx_decoders.py:465] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0425 11:00:30.914377 135555356522304 nnx_decoders.py:465] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 11:00:30.931341 135555356522304 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0425 11:00:30.931480 135555356522304 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 11:00:30.947544 135555356522304 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0425 11:00:30.947677 135555356522304 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 11:00:30.977284 135555356522304 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0425 11:00:30.977424 135555356522304 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 11:00:30.993761 135555356522304 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0425 11:00:30.993906 135555356522304 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 11:00:31.010055 135555356522304 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0425 11:00:31.010190 135555356522304 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 11:00:31.038063 135555356522304 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0425 11:00:31.038200 135555356522304 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 11:00:31.059528 135555356522304 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0425 11:00:31.059613 135555356522304 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0425 11:00:43.056273 135555356522304 max_utils.py:791] Total memory size: 1.7 GB, Output size: 0.4 GB, Temp size: 1.3 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB. I0425 11:00:43.058608 135555356522304 metric_logger.py:301] number parameters: 1.104 billion I0425 11:00:44.698700 135555356522304 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0425 11:00:55.774205 135555356522304 checkpointing.py:798] Waited 11.075490236282349 seconds for step 0 to finish before starting checkpointing. I0425 11:00:55.776718 135555356522304 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0425 11:00:55.778535 135555356522304 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 0 I0425 11:00:55.780392 135555356522304 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260425_092114/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260425_092114_06_grad_accum/checkpoints/0. I0425 11:00:56.533944 135555356522304 signaling_client.py:364] Using JaxDistributedSignalingClient I0425 11:00:56.534972 135555356522304 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0425 11:00:56.535029 135555356522304 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 11:00:56.808095 135555356522304 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.274931s I0425 11:00:56.808270 135555356522304 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 5.432 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2839992046356201 s) (per-host) I0425 11:00:56.808323 135555356522304 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.284063s (batch_requests_ready=0.002986s, total_serialization_initiated=0.281004s, others=0.000072s) I0425 11:00:56.808421 135555356522304 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.288119s (all_items=0.000018s, per_item={'items': '0.00001788'}, temp_paths=0.288101) I0425 11:00:56.809209 135555356522304 event_tracking.py:125] [process=5] [async] Finished blocking save in 1.03 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260425_092114/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260425_092114_06_grad_accum/checkpoints/0. I0425 11:00:56.809536 135426688071424 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 11:20:56.809499 I0425 11:00:56.818813 135555356522304 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0425 11:00:56.819077 135426641921792 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0425 11:00:56.819211 135555356522304 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260425_092114/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260425_092114_06_grad_accum/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777114855.7767005, 'wait_for_prev_duration_secs': 5.817413330078125e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777114855.778572, 'checkpointer_blocking_duration_secs': 1.0311331748962402, 'get_old_steps_start_time': 1777114856.8097317, 'get_old_steps_duration_secs': 2.9087066650390625e-05, 'checkpoint_manager_blocking_start_time': 1777114855.7745843, 'checkpoint_manager_blocking_duration_secs': 1.0445873737335205} I0425 11:00:56.819318 135555356522304 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0425 11:00:56.819384 135555356522304 max_utils.py:750] Memstats: After params initialized: I0425 11:00:56.819432 135555356522304 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_18(process=5,(2,4,0,0)) I0425 11:00:56.819464 135555356522304 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_19(process=5,(3,4,0,0)) I0425 11:00:56.819491 135555356522304 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_22(process=5,(2,5,0,0)) I0425 11:00:56.819514 135555356522304 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_23(process=5,(3,5,0,0)) I0425 11:00:57.131941 135555356522304 metric_logger.py:196] completed step: 0, seconds: 1.639, TFLOP/s/device: 33.159, Tokens/s/device: 4998.130, total_weights: 262144, loss: 10.876, lm_loss: 10.876, perplexity: 52883.598 I0425 11:00:57.731922 135555356522304 metric_logger.py:196] completed step: 1, seconds: 12.431, TFLOP/s/device: 4.372, Tokens/s/device: 658.974, total_weights: 262144, loss: 10.876, lm_loss: 10.876, perplexity: 52883.598 I0425 11:00:58.309954 135555356522304 metric_logger.py:196] completed step: 2, seconds: 0.023, TFLOP/s/device: 2375.476, Tokens/s/device: 358057.607, total_weights: 262144, loss: 10.561, lm_loss: 10.561, perplexity: 38601.980 I0425 11:00:58.888499 135555356522304 metric_logger.py:196] completed step: 3, seconds: 0.585, TFLOP/s/device: 92.976, Tokens/s/device: 14014.295, total_weights: 262144, loss: 10.270, lm_loss: 10.270, perplexity: 28865.557 I0425 11:00:59.726466 2581 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0425 11:01:00.045665 135555356522304 metric_logger.py:196] completed step: 4, seconds: 0.579, TFLOP/s/device: 93.928, Tokens/s/device: 14157.873, total_weights: 262144, loss: 10.021, lm_loss: 10.021, perplexity: 22497.775 I0425 11:01:00.053148 135555356522304 metric_logger.py:196] completed step: 5, seconds: 0.578, TFLOP/s/device: 93.995, Tokens/s/device: 14168.010, total_weights: 262144, loss: 9.819, lm_loss: 9.819, perplexity: 18383.324 I0425 11:01:01.776274 135430394722048 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_20260425_092114/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260425_092114_06_grad_accum/checkpoints/0/items/array_metadatas/process_5 I0425 11:01:34.729827 135426688071424 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 41.345 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 38.205525159835815 s) (per-host) I0425 11:01:34.729933 135426688071424 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 37.920285s. I0425 11:01:42.517801 135426688071424 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 45.708136s. I0425 11:01:42.518014 135426641921792 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0425 11:01:42.518080 135426641921792 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0425 11:01:42.518131 135426641921792 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0425 11:01:42.519910 135426641921792 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0425 11:01:45.428951 135555356522304 metric_logger.py:196] completed step: 6, seconds: 1.157, TFLOP/s/device: 46.957, Tokens/s/device: 7077.860, total_weights: 262144, loss: 9.666, lm_loss: 9.666, perplexity: 15775.117 I0425 11:01:46.007482 135555356522304 metric_logger.py:196] completed step: 7, seconds: 44.799, TFLOP/s/device: 1.213, Tokens/s/device: 182.862, total_weights: 262144, loss: 9.560, lm_loss: 9.560, perplexity: 14192.143 I0425 11:01:46.586025 135555356522304 metric_logger.py:196] completed step: 8, seconds: 0.585, TFLOP/s/device: 92.934, Tokens/s/device: 14008.064, total_weights: 262144, loss: 9.495, lm_loss: 9.495, perplexity: 13292.714 I0425 11:01:47.165109 135555356522304 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0425 11:01:47.165799 135555356522304 checkpointing.py:798] Waited 0.0007014274597167969 seconds for step 9 to finish before starting checkpointing. I0425 11:01:47.167927 135555356522304 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0425 11:01:47.169529 135555356522304 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 9 I0425 11:01:47.170996 135555356522304 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260425_092114/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260425_092114_06_grad_accum/checkpoints/9. I0425 11:01:47.456335 135555356522304 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0425 11:01:47.456427 135555356522304 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 11:01:47.490203 135555356522304 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.035561s I0425 11:01:47.490367 135555356522304 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 36.514 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.042246103286743164 s) (per-host) I0425 11:01:47.490417 135555356522304 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.042305s (batch_requests_ready=0.002360s, total_serialization_initiated=0.039879s, others=0.000067s) I0425 11:01:47.490516 135555356522304 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.046543s (all_items=0.000015s, per_item={'items': '0.00001550'}, temp_paths=0.046527) I0425 11:01:47.491270 135555356522304 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.32 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260425_092114/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260425_092114_06_grad_accum/checkpoints/9. I0425 11:01:47.491566 135430980757248 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 11:21:47.491533 I0425 11:01:47.493483 135555356522304 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0425 11:01:47.493767 135426652792576 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0425 11:01:47.493925 135555356522304 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260425_092114/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260425_092114_06_grad_accum/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777114907.1678934, 'wait_for_prev_duration_secs': 7.224082946777344e-05, 'time_between_consecutive_saves_sec': 4.647942304611206, 'checkpointer_blocking_start_time': 1777114907.1695657, 'checkpointer_blocking_duration_secs': 0.3221144676208496, 'get_old_steps_start_time': 1777114907.4917033, 'get_old_steps_duration_secs': 3.0040740966796875e-05, 'checkpoint_manager_blocking_start_time': 1777114907.166034, 'checkpoint_manager_blocking_duration_secs': 0.32785701751708984} I0425 11:01:47.494047 135555356522304 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0425 11:01:47.494092 135555356522304 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0425 11:01:52.634070 135426661185280 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_20260425_092114/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260425_092114_06_grad_accum/checkpoints/9/items/array_metadatas/process_5 I0425 11:02:29.277431 135430980757248 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 37.763 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.82927703857422 s) (per-host) I0425 11:02:29.277542 135430980757248 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.785343s. I0425 11:02:36.273918 135430980757248 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 48.781703s. I0425 11:02:36.274197 135426652792576 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0425 11:02:36.274333 135426652792576 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0425 11:02:36.274380 135426652792576 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0425 11:02:36.276830 135426652792576 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0425 11:02:36.277030 135555356522304 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. I0425 11:02:36.277191 135555356522304 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0425 11:02:36.278095 135555356522304 metric_logger.py:196] completed step: 9, seconds: 0.578, TFLOP/s/device: 94.013, Tokens/s/device: 14170.706, total_weights: 262144, loss: 9.457, lm_loss: 9.457, perplexity: 12793.173 Per train step: Total TFLOPs: 54.35 split as 93.93% learnable weight flops and 6.07% attention flops XPK End: Sat Apr 25 11:02:44 UTC 2026 EXIT_CODE=0