XPK Start: Sat Apr 25 13:51:58 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 13:52:23.708704: 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 13:52:23.920558 138780109596480 max_utils.py:273] Attempting to initialize the jax distributed system... I0425 13:52:32.962236 138780109596480 distributed.py:149] Starting JAX distributed service on [::]:8482 I0425 13:52:32.964892 138780109596480 distributed.py:172] Connecting to JAX distributed service on mt-07-eval-czz9f-slice-job-0-0.mt-07-eval-czz9f:8482 I0425 13:52:33.826190 138780109596480 max_utils.py:284] Jax distributed system initialized! I0425 13:52:39.861563 138780109596480 max_utils.py:800] System Information: Jax Version: 0.9.2 I0425 13:52:39.861669 138780109596480 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0425 13:52:39.861708 138780109596480 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 13:52:39.861739 138780109596480 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0425 13:52:40.555168 138780109596480 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0425 13:52:40.669270 138780109596480 checkpointing.py:688] Setting up checkpoint logger... I0425 13:52:40.669394 138780109596480 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0425 13:52:40.669439 138780109596480 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0425 13:52:40.669634 138780109596480 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 0x7e378b737950>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0425 13:52:43.546046 138780109596480 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0425 13:52:43.546313 138780109596480 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 0x7e233840c650>}, handler_registry=None I0425 13:52:43.546577 138780109596480 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7e233840c650>` 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 13:52:43.546631 138780109596480 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7e23502b0da0>` 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 13:52:43.546675 138780109596480 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 0x7e233840c650>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7e233840c650>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7e23502b0da0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7e23502b0da0>}). I0425 13:52:43.547043 138780109596480 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0425 13:52:43.547151 138780109596480 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7e23384076a0> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0425 13:52:44.762743 138780109596480 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_07_eval/checkpoints I0425 13:52:44.995011 138780109596480 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_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_07_eval/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7e23502b09b0> I0425 13:52:44.995218 138780109596480 checkpointing.py:302] Checkpoint manager created! I0425 13:52:45.960653 138780109596480 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0425 13:52:45.960772 138780109596480 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0425 13:52:47.330750 138780109596480 maxtext_utils.py:1889] decoder/decoder_norm/scale/value Shape: float32[2048] Physical: (None,) I0425 13:52:47.330868 138780109596480 maxtext_utils.py:1889] decoder/layers/mlp/wi_0/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, None) I0425 13:52:47.330920 138780109596480 maxtext_utils.py:1889] decoder/layers/mlp/wi_1/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, None) I0425 13:52:47.330962 138780109596480 maxtext_utils.py:1889] decoder/layers/mlp/wo/kernel/value Shape: float32[7168,16,2048] Physical: (None, None, 'fsdp') I0425 13:52:47.330997 138780109596480 maxtext_utils.py:1889] decoder/layers/post_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: (None, None) I0425 13:52:47.331031 138780109596480 maxtext_utils.py:1889] decoder/layers/pre_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: (None, None) I0425 13:52:47.331065 138780109596480 maxtext_utils.py:1889] decoder/layers/self_attention/key/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0425 13:52:47.331111 138780109596480 maxtext_utils.py:1889] decoder/layers/self_attention/out/kernel/value Shape: float32[16,16,128,2048] Physical: (None, None, None, 'fsdp') I0425 13:52:47.331152 138780109596480 maxtext_utils.py:1889] decoder/layers/self_attention/query/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0425 13:52:47.331186 138780109596480 maxtext_utils.py:1889] decoder/layers/self_attention/value/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0425 13:52:47.331218 138780109596480 maxtext_utils.py:1889] decoder/logits_dense/kernel/value Shape: float32[2048,32000] Physical: ('fsdp', None) I0425 13:52:47.331249 138780109596480 maxtext_utils.py:1889] token_embedder/embedding/value Shape: float32[32000,2048] Physical: (None, 'fsdp') I0425 13:52:47.742162 138780109596480 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0425 13:52:47.742257 138780109596480 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 13:52:47.747562 138780109596480 nnx_decoders.py:465] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0425 13:52:47.747619 138780109596480 nnx_decoders.py:465] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 13:52:47.764272 138780109596480 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch_attn', 'activation_length_attn', 'activation_embed_attn'). I0425 13:52:47.764332 138780109596480 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 13:52:47.780427 138780109596480 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch_attn', 'activation_length_attn', 'activation_embed_attn'). I0425 13:52:47.780489 138780109596480 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 13:52:47.806335 138780109596480 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim'). I0425 13:52:47.806405 138780109596480 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 13:52:47.822755 138780109596480 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim'). I0425 13:52:47.822815 138780109596480 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 13:52:47.838995 138780109596480 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim'). I0425 13:52:47.839054 138780109596480 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 13:52:47.869141 138780109596480 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch_attn', 'activation_length_attn', 'activation_heads', 'activation_kv'). I0425 13:52:47.869218 138780109596480 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 13:52:47.889298 138780109596480 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0425 13:52:47.889359 138780109596480 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0425 13:52:58.832757 138780109596480 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. I0425 13:52:58.835145 138780109596480 metric_logger.py:301] number parameters: 1.104 billion I0425 13:53:10.004148 138780109596480 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0425 13:53:10.403798 138780109596480 checkpointing.py:798] Waited 0.39963364601135254 seconds for step 0 to finish before starting checkpointing. I0425 13:53:10.405986 138780109596480 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0425 13:53:10.407873 138780109596480 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 0 I0425 13:53:10.409313 138780109596480 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_07_eval/checkpoints/0. I0425 13:53:10.739691 138780109596480 signaling_client.py:364] Using JaxDistributedSignalingClient I0425 13:53:10.740742 138780109596480 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0425 13:53:10.740802 138780109596480 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 13:53:11.014435 138780109596480 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.275513s I0425 13:53:11.014615 138780109596480 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.422 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.28451013565063477 s) (per-host) I0425 13:53:11.014671 138780109596480 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.284577s (batch_requests_ready=0.002954s, total_serialization_initiated=0.281548s, others=0.000075s) I0425 13:53:11.014772 138780109596480 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.289357s (all_items=0.000018s, per_item={'items': '0.00001788'}, temp_paths=0.289339) I0425 13:53:11.015544 138780109596480 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.61 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_07_eval/checkpoints/0. I0425 13:53:11.015905 138650671118080 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 14:13:11.015866 I0425 13:53:11.036087 138780109596480 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0425 13:53:11.036345 138648523634432 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0425 13:53:11.036468 138780109596480 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777125190.4059663, 'wait_for_prev_duration_secs': 6.508827209472656e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777125190.407911, 'checkpointer_blocking_duration_secs': 0.6081442832946777, 'get_old_steps_start_time': 1777125191.016081, 'get_old_steps_duration_secs': 3.8623809814453125e-05, 'checkpoint_manager_blocking_start_time': 1777125190.4042566, 'checkpoint_manager_blocking_duration_secs': 0.6321713924407959} I0425 13:53:11.036577 138780109596480 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0425 13:53:11.036645 138780109596480 max_utils.py:750] Memstats: After params initialized: I0425 13:53:11.036694 138780109596480 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_24(process=6,(0,6,0,0)) I0425 13:53:11.036725 138780109596480 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_25(process=6,(1,6,0,0)) I0425 13:53:11.036751 138780109596480 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_28(process=6,(0,7,0,0)) I0425 13:53:11.036775 138780109596480 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_29(process=6,(1,7,0,0)) I0425 13:53:11.350813 138780109596480 metric_logger.py:196] completed step: 0, seconds: 11.168, TFLOP/s/device: 1.217, Tokens/s/device: 183.382, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52786.469 I0425 13:53:11.532765 138780109596480 metric_logger.py:196] completed step: 1, seconds: 1.345, TFLOP/s/device: 10.103, Tokens/s/device: 1522.852, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52786.469 I0425 13:53:11.955409 138780109596480 metric_logger.py:196] completed step: 2, seconds: 0.036, TFLOP/s/device: 379.805, Tokens/s/device: 57248.281, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28632.133 I0425 13:53:12.103300 138780109596480 metric_logger.py:196] completed step: 3, seconds: 0.412, TFLOP/s/device: 32.957, Tokens/s/device: 4967.654, total_weights: 65536, loss: 9.732, lm_loss: 9.732, perplexity: 16855.789 I0425 13:53:12.399134 138780109596480 metric_logger.py:196] completed step: 4, seconds: 0.165, TFLOP/s/device: 82.583, Tokens/s/device: 12447.881, total_weights: 65536, loss: 9.274, lm_loss: 9.274, perplexity: 10661.594 I0425 13:53:12.406715 138780109596480 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.259, Tokens/s/device: 13906.336, total_weights: 65536, loss: 8.888, lm_loss: 8.888, perplexity: 7245.978 I0425 13:53:14.388542 2818 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0425 13:53:16.413895 138650079450880 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_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_07_eval/checkpoints/0/items/array_metadatas/process_6 I0425 13:53:34.390531 138780109596480 metric_logger.py:196] completed step: 6, seconds: 0.297, TFLOP/s/device: 45.795, Tokens/s/device: 6902.688, total_weights: 65536, loss: 8.589, lm_loss: 8.589, perplexity: 5371.156 I0425 13:53:34.537931 138780109596480 metric_logger.py:196] completed step: 7, seconds: 21.837, TFLOP/s/device: 0.622, Tokens/s/device: 93.784, total_weights: 65536, loss: 8.380, lm_loss: 8.380, perplexity: 4360.465 I0425 13:53:34.685866 138780109596480 metric_logger.py:196] completed step: 8, seconds: 0.153, TFLOP/s/device: 88.743, Tokens/s/device: 13376.354, total_weights: 65536, loss: 8.251, lm_loss: 8.251, perplexity: 3831.256 I0425 13:53:34.833770 138780109596480 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0425 13:53:34.834462 138780109596480 checkpointing.py:798] Waited 0.0007052421569824219 seconds for step 9 to finish before starting checkpointing. I0425 13:53:34.836879 138780109596480 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0425 13:53:46.983087 138650671118080 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 43.572 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 36.25295281410217 s) (per-host) I0425 13:53:46.983197 138650671118080 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 35.967184s. I0425 13:53:56.455591 138650671118080 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 45.439560s. I0425 13:53:56.455818 138648523634432 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0425 13:53:56.455882 138648523634432 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0425 13:53:56.455930 138648523634432 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0425 13:53:56.458434 138648523634432 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0425 13:53:56.458628 138780109596480 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. W0425 13:53:56.458798 138780109596480 checkpoint_manager.py:1452] Waiting for previous save to complete took 21.621909 seconds. If this number is high, consider checkpointing less frequently. I0425 13:53:56.460810 138780109596480 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 9 I0425 13:53:56.463121 138780109596480 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_07_eval/checkpoints/9. I0425 13:53:56.803711 138780109596480 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0425 13:53:56.803806 138780109596480 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 13:53:56.841248 138780109596480 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.039180s I0425 13:53:56.841423 138780109596480 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 33.364 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.046235084533691406 s) (per-host) I0425 13:53:56.841470 138780109596480 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.046292s (batch_requests_ready=0.002728s, total_serialization_initiated=0.043499s, others=0.000065s) I0425 13:53:56.841563 138780109596480 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.050467s (all_items=0.000015s, per_item={'items': '0.00001526'}, temp_paths=0.050452) I0425 13:53:56.842288 138780109596480 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.38 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_07_eval/checkpoints/9. I0425 13:53:56.842619 138648523634432 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 14:13:56.842583 I0425 13:53:56.844543 138780109596480 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0425 13:53:56.844792 138650079450880 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0425 13:53:56.844925 138780109596480 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777125214.8368473, 'wait_for_prev_duration_secs': 21.62190866470337, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777125236.4608567, 'checkpointer_blocking_duration_secs': 0.38190698623657227, 'get_old_steps_start_time': 1777125236.8427877, 'get_old_steps_duration_secs': 2.956390380859375e-05, 'checkpoint_manager_blocking_start_time': 1777125214.8346975, 'checkpoint_manager_blocking_duration_secs': 22.010193824768066} I0425 13:53:56.845089 138780109596480 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0425 13:53:56.845147 138780109596480 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0425 13:54:02.185063 138650662725376 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_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_07_eval/checkpoints/9/items/array_metadatas/process_6 I0425 13:54:38.196002 138648523634432 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 38.154 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.400776386260986 s) (per-host) I0425 13:54:38.196143 138648523634432 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.353414s. I0425 13:54:46.782691 138648523634432 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 49.939946s. I0425 13:54:46.782973 138650079450880 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0425 13:54:46.783086 138650079450880 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0425 13:54:46.783164 138650079450880 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0425 13:54:46.784944 138650079450880 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0425 13:54:46.785121 138780109596480 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. I0425 13:54:46.785287 138780109596480 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0425 13:54:46.786276 138780109596480 metric_logger.py:196] completed step: 9, seconds: 0.148, TFLOP/s/device: 91.953, Tokens/s/device: 13860.220, 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: Sat Apr 25 13:54:58 UTC 2026 EXIT_CODE=0