XPK Start: Fri Apr 24 10:52:12 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. 2026-04-24 10:52:37.605443: 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) I0424 10:52:37.817518 137022781900608 max_utils.py:273] Attempting to initialize the jax distributed system... I0424 10:52:46.858555 137022781900608 distributed.py:149] Starting JAX distributed service on [::]:8482 I0424 10:52:46.860887 137022781900608 distributed.py:172] Connecting to JAX distributed service on mt-06-grad-accum-bsrit-slice-job-0-0.mt-06-grad-accum-bsrit:8482 I0424 10:52:47.811038 137022781900608 max_utils.py:284] Jax distributed system initialized! I0424 10:52:53.972539 137022781900608 max_utils.py:800] System Information: Jax Version: 0.9.2 I0424 10:52:53.972642 137022781900608 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0424 10:52:53.972701 137022781900608 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 I0424 10:52:53.972738 137022781900608 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0424 10:52:54.666746 137022781900608 maxtext_utils.py:1732] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0424 10:52:54.781514 137022781900608 checkpointing.py:688] Setting up checkpoint logger... I0424 10:52:54.781626 137022781900608 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0424 10:52:54.781686 137022781900608 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0424 10:52:54.781888 137022781900608 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 0x7c9e7eb165d0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0424 10:52:57.654178 137022781900608 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0424 10:52:57.654474 137022781900608 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 0x7c89482a9a30>}, handler_registry=None I0424 10:52:57.654766 137022781900608 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7c89482a9a30>` 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`. I0424 10:52:57.654820 137022781900608 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7c8948755b20>` 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`. I0424 10:52:57.654868 137022781900608 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 0x7c89482a9a30>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7c89482a9a30>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7c8948755b20>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7c8948755b20>}). I0424 10:52:57.655263 137022781900608 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0424 10:52:57.655347 137022781900608 async_checkpointer.py:192] [process=5][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7c8948737560> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0424 10:52:58.425850 137022781900608 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_06_grad_accum/checkpoints I0424 10:52:58.428095 137022781900608 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_20260424_091312/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_06_grad_accum/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7c89487b6660> I0424 10:52:58.428207 137022781900608 checkpointing.py:302] Checkpoint manager created! I0424 10:53:00.203103 137022781900608 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0424 10:53:00.203224 137022781900608 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0424 10:53:01.974563 137022781900608 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[2048]............................................... Unknown. I0424 10:53:01.974669 137022781900608 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[2048]............................................... (None,). I0424 10:53:01.989833 137022781900608 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[2048,16,7168]....................................... Unknown. I0424 10:53:01.989891 137022781900608 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[2048,16,7168]....................................... ('fsdp', None, None). I0424 10:53:02.020076 137022781900608 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[7168,16,2048]....................................... Unknown. I0424 10:53:02.020145 137022781900608 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[7168,16,2048]....................................... (None, None, 'fsdp'). I0424 10:53:02.036495 137022781900608 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[2048,16]............................................ Unknown. I0424 10:53:02.036565 137022781900608 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[2048,16]............................................ (None, None). I0424 10:53:02.067084 137022781900608 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[2048,16,16,128]..................................... Unknown. I0424 10:53:02.067153 137022781900608 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[2048,16,16,128]..................................... ('fsdp', None, None, None). I0424 10:53:02.082240 137022781900608 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[16,16,128,2048]..................................... Unknown. I0424 10:53:02.082297 137022781900608 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[16,16,128,2048]..................................... (None, None, None, 'fsdp'). I0424 10:53:02.127608 137022781900608 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[2048,32000]......................................... Unknown. I0424 10:53:02.127692 137022781900608 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[2048,32000]......................................... ('fsdp', None). I0424 10:53:02.142919 137022781900608 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[32000,2048]......................................... Unknown. I0424 10:53:02.142974 137022781900608 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[32000,2048]......................................... (None, 'fsdp'). I0424 10:53:02.375843 137022781900608 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0424 10:53:02.376002 137022781900608 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 10:53:02.382452 137022781900608 nnx_decoders.py:465] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0424 10:53:02.382561 137022781900608 nnx_decoders.py:465] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 10:53:02.399673 137022781900608 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0424 10:53:02.399808 137022781900608 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 10:53:02.416191 137022781900608 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0424 10:53:02.416331 137022781900608 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 10:53:02.447453 137022781900608 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 10:53:02.447613 137022781900608 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 10:53:02.464318 137022781900608 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 10:53:02.464457 137022781900608 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 10:53:02.481030 137022781900608 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 10:53:02.481162 137022781900608 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 10:53:02.509781 137022781900608 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0424 10:53:02.509928 137022781900608 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 10:53:02.531919 137022781900608 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0424 10:53:02.532010 137022781900608 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0424 10:53:14.170916 137022781900608 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. I0424 10:53:14.173257 137022781900608 metric_logger.py:301] number parameters: 1.104 billion I0424 10:53:16.272317 137022781900608 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0424 10:53:27.288692 137022781900608 checkpointing.py:798] Waited 11.016334295272827 seconds for step 0 to finish before starting checkpointing. I0424 10:53:27.292680 137022781900608 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 10:53:27.294511 137022781900608 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 0 I0424 10:53:27.295820 137022781900608 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_06_grad_accum/checkpoints/0. I0424 10:53:27.636899 137022781900608 signaling_client.py:364] Using JaxDistributedSignalingClient I0424 10:53:27.637827 137022781900608 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0424 10:53:27.637930 137022781900608 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 I0424 10:53:27.914133 137022781900608 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.278031s I0424 10:53:27.914315 137022781900608 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 5.360 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.28777456283569336 s) (per-host) I0424 10:53:27.914371 137022781900608 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.287841s (batch_requests_ready=0.003477s, total_serialization_initiated=0.284290s, others=0.000074s) I0424 10:53:27.914470 137022781900608 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.292338s (all_items=0.000017s, per_item={'items': '0.00001693'}, temp_paths=0.292321) I0424 10:53:27.915303 137022781900608 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.62 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_06_grad_accum/checkpoints/0. I0424 10:53:27.915568 136894465685248 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 11:13:27.915544 I0424 10:53:27.925343 137022781900608 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0424 10:53:27.925584 136893920421632 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0424 10:53:27.925714 137022781900608 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_06_grad_accum/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777028007.292645, 'wait_for_prev_duration_secs': 7.700920104980469e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777028007.2945497, 'checkpointer_blocking_duration_secs': 0.6211507320404053, 'get_old_steps_start_time': 1777028007.9157271, 'get_old_steps_duration_secs': 2.8848648071289062e-05, 'checkpoint_manager_blocking_start_time': 1777028007.2892702, 'checkpoint_manager_blocking_duration_secs': 0.6364057064056396} I0424 10:53:27.925827 137022781900608 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0424 10:53:27.925892 137022781900608 max_utils.py:750] Memstats: After params initialized: I0424 10:53:27.925944 137022781900608 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_18(process=5,(2,4,0,0)) I0424 10:53:27.925984 137022781900608 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_19(process=5,(3,4,0,0)) I0424 10:53:27.926011 137022781900608 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_22(process=5,(2,5,0,0)) I0424 10:53:27.926036 137022781900608 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_23(process=5,(3,5,0,0)) I0424 10:53:28.238089 137022781900608 metric_logger.py:196] completed step: 0, seconds: 2.098, TFLOP/s/device: 25.905, Tokens/s/device: 3904.734, total_weights: 262144, loss: 10.876, lm_loss: 10.876, perplexity: 52883.598 I0424 10:53:28.848588 137022781900608 metric_logger.py:196] completed step: 1, seconds: 11.964, TFLOP/s/device: 4.543, Tokens/s/device: 684.729, total_weights: 262144, loss: 10.876, lm_loss: 10.876, perplexity: 52883.598 I0424 10:53:29.426896 137022781900608 metric_logger.py:196] completed step: 2, seconds: 0.033, TFLOP/s/device: 1632.774, Tokens/s/device: 246109.475, total_weights: 262144, loss: 10.561, lm_loss: 10.561, perplexity: 38601.980 I0424 10:53:30.005461 137022781900608 metric_logger.py:196] completed step: 3, seconds: 0.585, TFLOP/s/device: 92.915, Tokens/s/device: 14005.119, total_weights: 262144, loss: 10.270, lm_loss: 10.270, perplexity: 28865.557 I0424 10:53:30.972918 2578 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0424 10:53:31.162790 137022781900608 metric_logger.py:196] completed step: 4, seconds: 0.578, TFLOP/s/device: 93.967, Tokens/s/device: 14163.699, total_weights: 262144, loss: 10.021, lm_loss: 10.021, perplexity: 22497.775 I0424 10:53:31.171068 137022781900608 metric_logger.py:196] completed step: 5, seconds: 0.579, TFLOP/s/device: 93.939, Tokens/s/device: 14159.561, total_weights: 262144, loss: 9.819, lm_loss: 9.819, perplexity: 18383.324 I0424 10:53:33.033849 136894448899840 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_20260424_091312/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_06_grad_accum/checkpoints/0/items/array_metadatas/process_5 I0424 10:54:05.402147 136894465685248 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 41.815 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 37.77556538581848 s) (per-host) I0424 10:54:05.402275 136894465685248 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 37.486627s. I0424 10:54:13.850422 136894465685248 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 45.934759s. I0424 10:54:13.850645 136893920421632 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0424 10:54:13.850738 136893920421632 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0424 10:54:13.850795 136893920421632 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0424 10:54:14.886280 136893920421632 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0424 10:54:16.613585 137022781900608 metric_logger.py:196] completed step: 6, seconds: 1.158, TFLOP/s/device: 46.923, Tokens/s/device: 7072.684, total_weights: 262144, loss: 9.666, lm_loss: 9.666, perplexity: 15775.117 I0424 10:54:17.192151 137022781900608 metric_logger.py:196] completed step: 7, seconds: 44.866, TFLOP/s/device: 1.211, Tokens/s/device: 182.589, total_weights: 262144, loss: 9.560, lm_loss: 9.560, perplexity: 14192.143 I0424 10:54:17.770685 137022781900608 metric_logger.py:196] completed step: 8, seconds: 0.585, TFLOP/s/device: 92.965, Tokens/s/device: 14012.665, total_weights: 262144, loss: 9.495, lm_loss: 9.495, perplexity: 13292.714 I0424 10:54:18.349797 137022781900608 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0424 10:54:18.350489 137022781900608 checkpointing.py:798] Waited 0.0007042884826660156 seconds for step 9 to finish before starting checkpointing. I0424 10:54:18.352442 137022781900608 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 10:54:18.354177 137022781900608 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 9 I0424 10:54:18.355710 137022781900608 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_06_grad_accum/checkpoints/9. I0424 10:54:18.686812 137022781900608 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0424 10:54:18.686903 137022781900608 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 I0424 10:54:18.727338 137022781900608 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.042181s I0424 10:54:18.727500 137022781900608 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 31.179 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04947471618652344 s) (per-host) I0424 10:54:18.727548 137022781900608 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.049532s (batch_requests_ready=0.002810s, total_serialization_initiated=0.046658s, others=0.000065s) I0424 10:54:18.727642 137022781900608 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.053592s (all_items=0.000015s, per_item={'items': '0.00001526'}, temp_paths=0.053577) I0424 10:54:18.728408 137022781900608 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.37 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_06_grad_accum/checkpoints/9. I0424 10:54:18.728716 136893928814336 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 11:14:18.728683 I0424 10:54:18.730740 137022781900608 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0424 10:54:18.731037 136894465685248 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0424 10:54:18.731198 137022781900608 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_06_grad_accum/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777028058.3524096, 'wait_for_prev_duration_secs': 7.104873657226562e-05, 'time_between_consecutive_saves_sec': 3.4660377502441406, 'checkpointer_blocking_start_time': 1777028058.3542147, 'checkpointer_blocking_duration_secs': 0.37464189529418945, 'get_old_steps_start_time': 1777028058.7288804, 'get_old_steps_duration_secs': 2.956390380859375e-05, 'checkpoint_manager_blocking_start_time': 1777028058.350733, 'checkpoint_manager_blocking_duration_secs': 0.380429744720459} I0424 10:54:18.731313 137022781900608 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0424 10:54:18.731357 137022781900608 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0424 10:54:23.838629 136893920421632 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_20260424_091312/nnx_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_06_grad_accum/checkpoints/9/items/array_metadatas/process_5 I0424 10:55:00.721853 136893928814336 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 37.570 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.04378390312195 s) (per-host) I0424 10:55:00.721982 136893928814336 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.993153s. I0424 10:55:09.174266 136893928814336 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 50.445422s. I0424 10:55:09.174553 136894465685248 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0424 10:55:09.174695 136894465685248 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0424 10:55:09.174743 136894465685248 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0424 10:55:09.177255 136894465685248 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0424 10:55:09.177435 137022781900608 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. I0424 10:55:09.177606 137022781900608 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 10:55:09.178501 137022781900608 metric_logger.py:196] completed step: 9, seconds: 0.578, TFLOP/s/device: 94.020, Tokens/s/device: 14171.784, 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: Fri Apr 24 10:55:17 UTC 2026 EXIT_CODE=0