XPK Start: Fri Apr 24 11:09:08 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 11:09:33.615361: 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 11:09:33.826736 140573030864704 max_utils.py:273] Attempting to initialize the jax distributed system... I0424 11:09:42.868968 140573030864704 distributed.py:149] Starting JAX distributed service on [::]:8482 I0424 11:09:42.871383 140573030864704 distributed.py:172] Connecting to JAX distributed service on mt-10-shardy-false-40ax0-slice-job-0-0.mt-10-shardy-false-40ax0:8482 I0424 11:09:43.910062 140573030864704 max_utils.py:284] Jax distributed system initialized! I0424 11:09:49.881045 140573030864704 max_utils.py:800] System Information: Jax Version: 0.9.2 I0424 11:09:49.881149 140573030864704 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0424 11:09:49.881189 140573030864704 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 11:09:49.881227 140573030864704 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0424 11:09:50.571336 140573030864704 maxtext_utils.py:1732] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0424 11:09:50.684290 140573030864704 checkpointing.py:688] Setting up checkpoint logger... I0424 11:09:50.684404 140573030864704 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0424 11:09:50.684449 140573030864704 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0424 11:09:50.684642 140573030864704 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 0x7fd91711ccb0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0424 11:09:53.458498 140573030864704 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0424 11:09:53.458696 140573030864704 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 0x7fc3d4655010>}, handler_registry=None I0424 11:09:53.458932 140573030864704 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7fc3d4655010>` 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 11:09:53.458981 140573030864704 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7fc4bc4315e0>` 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 11:09:53.459017 140573030864704 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 0x7fc3d4655010>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7fc3d4655010>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7fc4bc4315e0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7fc4bc4315e0>}). I0424 11:09:53.459352 140573030864704 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0424 11:09:53.459424 140573030864704 async_checkpointer.py:192] [process=5][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7fc3d4627560> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0424 11:09:54.711573 140573030864704 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_10_shardy_false/checkpoints I0424 11:09:54.822593 140573030864704 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_10_shardy_false/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7fc4bc5e7410> I0424 11:09:54.822797 140573030864704 checkpointing.py:302] Checkpoint manager created! I0424 11:09:55.793700 140573030864704 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0424 11:09:55.793818 140573030864704 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0424 11:09:57.518101 140573030864704 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0424 11:09:57.518194 140573030864704 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 11:09:57.523952 140573030864704 nnx_decoders.py:465] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0424 11:09:57.524013 140573030864704 nnx_decoders.py:465] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 11:09:57.540277 140573030864704 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0424 11:09:57.540341 140573030864704 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 11:09:57.556013 140573030864704 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0424 11:09:57.556071 140573030864704 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 11:09:57.580157 140573030864704 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 11:09:57.580224 140573030864704 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 11:09:57.596059 140573030864704 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 11:09:57.596124 140573030864704 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 11:09:57.611889 140573030864704 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 11:09:57.611958 140573030864704 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 11:09:57.643440 140573030864704 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0424 11:09:57.643514 140573030864704 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 11:09:57.663518 140573030864704 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0424 11:09:57.663580 140573030864704 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0424 11:10:08.817108 140573030864704 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. I0424 11:10:08.819492 140573030864704 metric_logger.py:301] number parameters: 1.104 billion I0424 11:10:20.273992 140573030864704 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0424 11:10:20.425603 140573030864704 checkpointing.py:798] Waited 0.1515958309173584 seconds for step 0 to finish before starting checkpointing. I0424 11:10:20.428038 140573030864704 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 11:10:20.429645 140573030864704 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 0 I0424 11:10:20.431066 140573030864704 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_10_shardy_false/checkpoints/0. I0424 11:10:20.753275 140573030864704 signaling_client.py:364] Using JaxDistributedSignalingClient I0424 11:10:20.754275 140573030864704 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0424 11:10:20.754339 140573030864704 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 11:10:21.028030 140573030864704 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.275536s I0424 11:10:21.028202 140573030864704 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 5.415 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2848663330078125 s) (per-host) I0424 11:10:21.028253 140573030864704 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.284934s (batch_requests_ready=0.002967s, total_serialization_initiated=0.281891s, others=0.000076s) I0424 11:10:21.028352 140573030864704 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.289104s (all_items=0.000018s, per_item={'items': '0.00001788'}, temp_paths=0.289086) I0424 11:10:21.029021 140573030864704 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.60 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_10_shardy_false/checkpoints/0. I0424 11:10:21.029228 140443228866304 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 11:30:21.029194 I0424 11:10:21.037554 140573030864704 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0424 11:10:21.037867 140444331656960 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0424 11:10:21.038024 140573030864704 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_10_shardy_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777029020.4280186, 'wait_for_prev_duration_secs': 6.270408630371094e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777029020.4296968, 'checkpointer_blocking_duration_secs': 0.5996799468994141, 'get_old_steps_start_time': 1777029021.0293987, 'get_old_steps_duration_secs': 2.6941299438476562e-05, 'checkpoint_manager_blocking_start_time': 1777029020.4260182, 'checkpoint_manager_blocking_duration_secs': 0.6119682788848877} I0424 11:10:21.038131 140573030864704 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0424 11:10:21.038197 140573030864704 max_utils.py:750] Memstats: After params initialized: I0424 11:10:21.038245 140573030864704 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_18(process=5,(2,4,0,0)) I0424 11:10:21.038278 140573030864704 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_19(process=5,(3,4,0,0)) I0424 11:10:21.038305 140573030864704 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_22(process=5,(2,5,0,0)) I0424 11:10:21.038329 140573030864704 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_23(process=5,(3,5,0,0)) I0424 11:10:21.354853 140573030864704 metric_logger.py:196] completed step: 0, seconds: 11.453, TFLOP/s/device: 1.186, Tokens/s/device: 178.811, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52786.469 I0424 11:10:21.526891 140573030864704 metric_logger.py:196] completed step: 1, seconds: 1.079, TFLOP/s/device: 12.592, Tokens/s/device: 1897.997, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52786.469 I0424 11:10:21.950741 140573030864704 metric_logger.py:196] completed step: 2, seconds: 0.026, TFLOP/s/device: 525.391, Tokens/s/device: 79192.607, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28632.133 I0424 11:10:22.098243 140573030864704 metric_logger.py:196] completed step: 3, seconds: 0.414, TFLOP/s/device: 32.857, Tokens/s/device: 4952.626, total_weights: 65536, loss: 9.732, lm_loss: 9.732, perplexity: 16855.789 I0424 11:10:22.393885 140573030864704 metric_logger.py:196] completed step: 4, seconds: 0.164, TFLOP/s/device: 82.700, Tokens/s/device: 12465.382, total_weights: 65536, loss: 9.274, lm_loss: 9.274, perplexity: 10661.594 I0424 11:10:22.402259 140573030864704 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.370, Tokens/s/device: 13923.070, total_weights: 65536, loss: 8.888, lm_loss: 8.888, perplexity: 7245.978 I0424 11:10:24.013703 2800 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0424 11:10:26.432835 140443237259008 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_10_shardy_false/checkpoints/0/items/array_metadatas/process_5 I0424 11:10:44.596324 140573030864704 metric_logger.py:196] completed step: 6, seconds: 0.297, TFLOP/s/device: 45.695, Tokens/s/device: 6887.692, total_weights: 65536, loss: 8.589, lm_loss: 8.589, perplexity: 5371.156 I0424 11:10:44.743825 140573030864704 metric_logger.py:196] completed step: 7, seconds: 22.048, TFLOP/s/device: 0.616, Tokens/s/device: 92.889, total_weights: 65536, loss: 8.380, lm_loss: 8.380, perplexity: 4360.465 I0424 11:10:44.891340 140573030864704 metric_logger.py:196] completed step: 8, seconds: 0.153, TFLOP/s/device: 88.813, Tokens/s/device: 13386.933, total_weights: 65536, loss: 8.251, lm_loss: 8.251, perplexity: 3831.256 I0424 11:10:45.039644 140573030864704 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0424 11:10:45.040307 140573030864704 checkpointing.py:798] Waited 0.0006749629974365234 seconds for step 9 to finish before starting checkpointing. I0424 11:10:45.042349 140573030864704 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0424 11:10:57.990550 140443228866304 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 42.408 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 37.247172832489014 s) (per-host) I0424 11:10:57.990685 140443228866304 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 36.961342s. I0424 11:11:07.248311 140443228866304 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 46.218951s. I0424 11:11:07.248585 140444331656960 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0424 11:11:07.248720 140444331656960 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0424 11:11:07.248771 140444331656960 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0424 11:11:07.251098 140444331656960 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0424 11:11:07.251283 140573030864704 checkpoint_manager.py:2032] [process=5][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0. W0424 11:11:07.251414 140573030864704 checkpoint_manager.py:1452] Waiting for previous save to complete took 22.209065 seconds. If this number is high, consider checkpointing less frequently. I0424 11:11:07.253375 140573030864704 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 9 I0424 11:11:07.255395 140573030864704 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_10_shardy_false/checkpoints/9. I0424 11:11:07.542922 140573030864704 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0424 11:11:07.543012 140573030864704 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 11:11:07.583038 140573030864704 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.041798s I0424 11:11:07.583182 140573030864704 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 31.626 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04877519607543945 s) (per-host) I0424 11:11:07.583230 140573030864704 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.048833s (batch_requests_ready=0.002658s, total_serialization_initiated=0.046109s, others=0.000065s) I0424 11:11:07.583320 140573030864704 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.052875s (all_items=0.000015s, per_item={'items': '0.00001454'}, temp_paths=0.052860) I0424 11:11:07.583961 140573030864704 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.33 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_10_shardy_false/checkpoints/9. I0424 11:11:07.584307 140444331656960 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 11:31:07.584270 I0424 11:11:07.586286 140573030864704 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0424 11:11:07.586577 140422361888512 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0424 11:11:07.586723 140573030864704 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_10_shardy_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777029045.0423205, 'wait_for_prev_duration_secs': 22.209064960479736, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777029067.2534134, 'checkpointer_blocking_duration_secs': 0.3310370445251465, 'get_old_steps_start_time': 1777029067.5844743, 'get_old_steps_duration_secs': 2.9087066650390625e-05, 'checkpoint_manager_blocking_start_time': 1777029045.0405397, 'checkpoint_manager_blocking_duration_secs': 22.546149253845215} I0424 11:11:07.586891 140573030864704 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0424 11:11:07.586943 140573030864704 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0424 11:11:12.727224 140443237259008 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_10_shardy_false/checkpoints/9/items/array_metadatas/process_5 I0424 11:11:49.668873 140444331656960 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 37.489 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.13442635536194 s) (per-host) I0424 11:11:49.668998 140444331656960 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.084581s. I0424 11:11:57.708688 140444331656960 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 50.124236s. I0424 11:11:57.708970 140422361888512 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0424 11:11:57.709085 140422361888512 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0424 11:11:57.709133 140422361888512 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0424 11:11:57.713985 140422361888512 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0424 11:11:57.714156 140573030864704 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 11:11:57.714329 140573030864704 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 11:11:57.715268 140573030864704 metric_logger.py:196] completed step: 9, seconds: 0.148, TFLOP/s/device: 91.736, Tokens/s/device: 13827.374, total_weights: 65536, loss: 8.175, lm_loss: 8.175, perplexity: 3551.438 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops XPK End: Fri Apr 24 11:12:09 UTC 2026 EXIT_CODE=0