XPK Start: Thu Apr 23 14:34:59 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. 2026-04-23 14:35:24.432173: 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) I0423 14:35:24.644404 140336788334400 max_utils.py:273] Attempting to initialize the jax distributed system... I0423 14:35:33.685468 140336788334400 distributed.py:149] Starting JAX distributed service on [::]:8482 I0423 14:35:33.687900 140336788334400 distributed.py:172] Connecting to JAX distributed service on mt-07-eval-w0rpc-slice-job-0-0.mt-07-eval-w0rpc:8482 I0423 14:35:34.532021 140336788334400 max_utils.py:284] Jax distributed system initialized! I0423 14:35:40.657908 140336788334400 max_utils.py:800] System Information: Jax Version: 0.9.2 I0423 14:35:40.658016 140336788334400 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0423 14:35:40.658058 140336788334400 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 I0423 14:35:40.658112 140336788334400 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0423 14:35:41.353685 140336788334400 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0423 14:35:41.468513 140336788334400 checkpointing.py:688] Setting up checkpoint logger... I0423 14:35:41.468634 140336788334400 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0423 14:35:41.468680 140336788334400 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0423 14:35:41.468887 140336788334400 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 0x7fa2327c2600>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0423 14:35:44.378028 140336788334400 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0423 14:35:44.378285 140336788334400 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 0x7f8dc033af90>}, handler_registry=None I0423 14:35:44.378526 140336788334400 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7f8dc033af90>` 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`. I0423 14:35:44.378572 140336788334400 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7f8d9851c0e0>` 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`. I0423 14:35:44.378608 140336788334400 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 0x7f8dc033af90>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7f8dc033af90>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7f8d9851c0e0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7f8d9851c0e0>}). I0423 14:35:44.378929 140336788334400 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0423 14:35:44.379001 140336788334400 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7f8d9850f6a0> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0423 14:35:45.523768 140336788334400 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_07_eval/checkpoints I0423 14:35:45.940514 140336788334400 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_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_07_eval/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7f8d9851bb30> I0423 14:35:45.940686 140336788334400 checkpointing.py:302] Checkpoint manager created! I0423 14:35:46.941084 140336788334400 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0423 14:35:46.941213 140336788334400 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0423 14:35:48.338399 140336788334400 maxtext_utils.py:1889] decoder/decoder_norm/scale/value Shape: float32[2048] Physical: (None,) I0423 14:35:48.338516 140336788334400 maxtext_utils.py:1889] decoder/layers/mlp/wi_0/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, None) I0423 14:35:48.338567 140336788334400 maxtext_utils.py:1889] decoder/layers/mlp/wi_1/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, None) I0423 14:35:48.338609 140336788334400 maxtext_utils.py:1889] decoder/layers/mlp/wo/kernel/value Shape: float32[7168,16,2048] Physical: (None, None, 'fsdp') I0423 14:35:48.338645 140336788334400 maxtext_utils.py:1889] decoder/layers/post_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: (None, None) I0423 14:35:48.338678 140336788334400 maxtext_utils.py:1889] decoder/layers/pre_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: (None, None) I0423 14:35:48.338713 140336788334400 maxtext_utils.py:1889] decoder/layers/self_attention/key/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0423 14:35:48.338749 140336788334400 maxtext_utils.py:1889] decoder/layers/self_attention/out/kernel/value Shape: float32[16,16,128,2048] Physical: (None, None, None, 'fsdp') I0423 14:35:48.338785 140336788334400 maxtext_utils.py:1889] decoder/layers/self_attention/query/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0423 14:35:48.338820 140336788334400 maxtext_utils.py:1889] decoder/layers/self_attention/value/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0423 14:35:48.338852 140336788334400 maxtext_utils.py:1889] decoder/logits_dense/kernel/value Shape: float32[2048,32000] Physical: ('fsdp', None) I0423 14:35:48.338884 140336788334400 maxtext_utils.py:1889] token_embedder/embedding/value Shape: float32[32000,2048] Physical: (None, 'fsdp') I0423 14:35:48.749732 140336788334400 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0423 14:35:48.749831 140336788334400 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0423 14:35:48.755264 140336788334400 nnx_decoders.py:465] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0423 14:35:48.755321 140336788334400 nnx_decoders.py:465] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0423 14:35:48.772067 140336788334400 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0423 14:35:48.772143 140336788334400 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0423 14:35:48.788130 140336788334400 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0423 14:35:48.788191 140336788334400 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0423 14:35:48.813658 140336788334400 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0423 14:35:48.813724 140336788334400 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0423 14:35:48.829991 140336788334400 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0423 14:35:48.830053 140336788334400 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0423 14:35:48.846296 140336788334400 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0423 14:35:48.846368 140336788334400 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0423 14:35:48.876543 140336788334400 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0423 14:35:48.876620 140336788334400 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0423 14:35:48.896858 140336788334400 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0423 14:35:48.896919 140336788334400 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0423 14:36:00.097493 140336788334400 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. I0423 14:36:00.099794 140336788334400 metric_logger.py:301] number parameters: 1.104 billion I0423 14:36:11.424904 140336788334400 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0423 14:36:11.578403 140336788334400 checkpointing.py:798] Waited 0.15348267555236816 seconds for step 0 to finish before starting checkpointing. I0423 14:36:11.581012 140336788334400 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0423 14:36:11.582742 140336788334400 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 0 I0423 14:36:11.584170 140336788334400 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_07_eval/checkpoints/0. I0423 14:36:11.928189 140336788334400 signaling_client.py:364] Using JaxDistributedSignalingClient I0423 14:36:11.929065 140336788334400 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0423 14:36:11.929141 140336788334400 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 I0423 14:36:12.204229 140336788334400 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.276834s I0423 14:36:12.204396 140336788334400 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.391 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2861499786376953 s) (per-host) I0423 14:36:12.204445 140336788334400 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.286209s (batch_requests_ready=0.003103s, total_serialization_initiated=0.283040s, others=0.000067s) I0423 14:36:12.204549 140336788334400 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.290450s (all_items=0.000017s, per_item={'items': '0.00001740'}, temp_paths=0.290432) I0423 14:36:12.205351 140336788334400 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.62 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_07_eval/checkpoints/0. I0423 14:36:12.205655 140208078673664 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 14:56:12.205621 I0423 14:36:12.213441 140336788334400 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0423 14:36:12.213737 140204874651392 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0423 14:36:12.213889 140336788334400 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776954971.580994, 'wait_for_prev_duration_secs': 6.103515625e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776954971.5827804, 'checkpointer_blocking_duration_secs': 0.6230261325836182, 'get_old_steps_start_time': 1776954972.2058308, 'get_old_steps_duration_secs': 3.147125244140625e-05, 'checkpoint_manager_blocking_start_time': 1776954971.5788088, 'checkpoint_manager_blocking_duration_secs': 0.6350443363189697} I0423 14:36:12.213996 140336788334400 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0423 14:36:12.214066 140336788334400 max_utils.py:750] Memstats: After params initialized: I0423 14:36:12.214127 140336788334400 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_24(process=6,(0,6,0,0)) I0423 14:36:12.214160 140336788334400 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_25(process=6,(1,6,0,0)) I0423 14:36:12.214186 140336788334400 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_28(process=6,(0,7,0,0)) I0423 14:36:12.214210 140336788334400 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_29(process=6,(1,7,0,0)) I0423 14:36:12.535397 140336788334400 metric_logger.py:196] completed step: 0, seconds: 11.324, TFLOP/s/device: 1.200, Tokens/s/device: 180.855, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52786.469 I0423 14:36:12.712038 140336788334400 metric_logger.py:196] completed step: 1, seconds: 1.109, TFLOP/s/device: 12.256, Tokens/s/device: 1847.325, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52786.469 I0423 14:36:13.142461 140336788334400 metric_logger.py:196] completed step: 2, seconds: 0.030, TFLOP/s/device: 446.725, Tokens/s/device: 67335.196, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28632.133 I0423 14:36:13.290135 140336788334400 metric_logger.py:196] completed step: 3, seconds: 0.420, TFLOP/s/device: 32.312, Tokens/s/device: 4870.427, total_weights: 65536, loss: 9.732, lm_loss: 9.732, perplexity: 16855.789 I0423 14:36:13.585936 140336788334400 metric_logger.py:196] completed step: 4, seconds: 0.165, TFLOP/s/device: 82.581, Tokens/s/device: 12447.502, total_weights: 65536, loss: 9.274, lm_loss: 9.274, perplexity: 10661.594 I0423 14:36:13.593824 140336788334400 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.318, Tokens/s/device: 13915.218, total_weights: 65536, loss: 8.888, lm_loss: 8.888, perplexity: 7245.978 I0423 14:36:15.129523 2827 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0423 14:36:17.210440 140204883044096 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_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_07_eval/checkpoints/0/items/array_metadatas/process_6 I0423 14:36:36.971440 140336788334400 metric_logger.py:196] completed step: 6, seconds: 0.296, TFLOP/s/device: 45.830, Tokens/s/device: 6908.067, total_weights: 65536, loss: 8.589, lm_loss: 8.589, perplexity: 5371.156 I0423 14:36:37.119089 140336788334400 metric_logger.py:196] completed step: 7, seconds: 23.231, TFLOP/s/device: 0.585, Tokens/s/device: 88.157, total_weights: 65536, loss: 8.380, lm_loss: 8.380, perplexity: 4360.465 I0423 14:36:37.266509 140336788334400 metric_logger.py:196] completed step: 8, seconds: 0.154, TFLOP/s/device: 88.410, Tokens/s/device: 13326.132, total_weights: 65536, loss: 8.251, lm_loss: 8.251, perplexity: 3831.256 I0423 14:36:37.415003 140336788334400 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0423 14:36:37.415687 140336788334400 checkpointing.py:798] Waited 0.0006961822509765625 seconds for step 9 to finish before starting checkpointing. I0423 14:36:37.417598 140336788334400 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0423 14:36:48.582158 140208078673664 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 43.083 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 36.6638662815094 s) (per-host) I0423 14:36:48.582281 140208078673664 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 36.376517s. I0423 14:36:56.713760 140208078673664 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 44.507976s. I0423 14:36:56.714052 140204874651392 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0423 14:36:56.714188 140204874651392 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0423 14:36:56.714236 140204874651392 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0423 14:36:56.717088 140204874651392 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0423 14:36:56.717277 140336788334400 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. W0423 14:36:56.717411 140336788334400 checkpoint_manager.py:1452] Waiting for previous save to complete took 19.299814 seconds. If this number is high, consider checkpointing less frequently. I0423 14:36:56.719511 140336788334400 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 9 I0423 14:36:56.721614 140336788334400 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_07_eval/checkpoints/9. I0423 14:36:57.022783 140336788334400 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0423 14:36:57.022878 140336788334400 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 I0423 14:36:57.066709 140336788334400 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.045497s I0423 14:36:57.066876 140336788334400 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 29.195 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.05283784866333008 s) (per-host) I0423 14:36:57.066927 140336788334400 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.052899s (batch_requests_ready=0.002888s, total_serialization_initiated=0.049942s, others=0.000069s) I0423 14:36:57.067022 140336788334400 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.057020s (all_items=0.000016s, per_item={'items': '0.00001597'}, temp_paths=0.057004) I0423 14:36:57.067697 140336788334400 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.35 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_07_eval/checkpoints/9. I0423 14:36:57.068055 140204874651392 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 14:56:57.068016 I0423 14:36:57.069948 140336788334400 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0423 14:36:57.070177 140201108162304 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0423 14:36:57.070296 140336788334400 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776954997.4175668, 'wait_for_prev_duration_secs': 19.299814462661743, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776955016.7195497, 'checkpointer_blocking_duration_secs': 0.348663330078125, 'get_old_steps_start_time': 1776955017.0682342, 'get_old_steps_duration_secs': 2.956390380859375e-05, 'checkpoint_manager_blocking_start_time': 1776954997.415918, 'checkpoint_manager_blocking_duration_secs': 19.654345512390137} I0423 14:36:57.070401 140336788334400 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0423 14:36:57.070442 140336788334400 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0423 14:37:02.746677 140204883044096 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_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_07_eval/checkpoints/9/items/array_metadatas/process_6 I0423 14:37:38.672057 140204874651392 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 37.918 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.65797972679138 s) (per-host) I0423 14:37:38.672208 140204874651392 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.604024s. I0423 14:37:47.198912 140204874651392 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 50.130713s. I0423 14:37:47.199141 140201108162304 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0423 14:37:47.199198 140201108162304 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0423 14:37:47.199243 140201108162304 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0423 14:37:47.200756 140201108162304 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0423 14:37:47.200916 140336788334400 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. I0423 14:37:47.201088 140336788334400 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0423 14:37:47.202192 140336788334400 metric_logger.py:196] completed step: 9, seconds: 0.148, TFLOP/s/device: 91.949, Tokens/s/device: 13859.564, 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: Thu Apr 23 14:37:59 UTC 2026 EXIT_CODE=0