XPK Start: Thu Apr 23 14:49:00 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 14:49:25.486206: 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 14:49:25.698477 131993931294528 max_utils.py:273] Attempting to initialize the jax distributed system... I0423 14:49:34.740229 131993931294528 distributed.py:149] Starting JAX distributed service on [::]:8482 I0423 14:49:34.742780 131993931294528 distributed.py:172] Connecting to JAX distributed service on mt-09-pdb-lt-1-6f9fe-slice-job-0-0.mt-09-pdb-lt-1-6f9fe:8482 I0423 14:49:35.780566 131993931294528 max_utils.py:284] Jax distributed system initialized! I0423 14:49:41.964575 131993931294528 max_utils.py:800] System Information: Jax Version: 0.9.2 I0423 14:49:41.964681 131993931294528 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0423 14:49:41.964722 131993931294528 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 14:49:41.964756 131993931294528 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0423 14:49:42.673859 131993931294528 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 8, 1, 1, 1, 1, 4, 1, 1, 1, 1) I0423 14:49:42.787072 131993931294528 checkpointing.py:688] Setting up checkpoint logger... I0423 14:49:42.787202 131993931294528 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0423 14:49:42.787248 131993931294528 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0423 14:49:42.787443 131993931294528 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 0x780b9ff10bf0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0423 14:49:45.807348 131993931294528 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0423 14:49:45.807590 131993931294528 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 0x77f79426c530>}, handler_registry=None I0423 14:49:45.807825 131993931294528 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x77f79426c530>` 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 14:49:45.807875 131993931294528 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x77f7947436e0>` 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 14:49:45.807909 131993931294528 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 0x77f79426c530>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x77f79426c530>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x77f7947436e0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x77f7947436e0>}). I0423 14:49:45.808250 131993931294528 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0423 14:49:45.808325 131993931294528 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x77f794723600> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0423 14:49:46.995166 131993931294528 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_09_pdb_lt_1/checkpoints I0423 14:49:47.054512 131993931294528 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_09_pdb_lt_1/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x77f794705ca0> I0423 14:49:47.054671 131993931294528 checkpointing.py:302] Checkpoint manager created! I0423 14:49:48.017729 131993931294528 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0423 14:49:48.017850 131993931294528 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. fsdp: 8 tensor: 4 I0423 14:49:49.422706 131993931294528 maxtext_utils.py:1889] decoder/decoder_norm/scale/value Shape: float32[2048] Physical: ('tensor',) I0423 14:49:49.422853 131993931294528 maxtext_utils.py:1889] decoder/layers/mlp/wi_0/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, 'tensor') I0423 14:49:49.422917 131993931294528 maxtext_utils.py:1889] decoder/layers/mlp/wi_1/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, 'tensor') I0423 14:49:49.422976 131993931294528 maxtext_utils.py:1889] decoder/layers/mlp/wo/kernel/value Shape: float32[7168,16,2048] Physical: ('tensor', None, 'fsdp') I0423 14:49:49.423027 131993931294528 maxtext_utils.py:1889] decoder/layers/post_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: ('tensor', None) I0423 14:49:49.423075 131993931294528 maxtext_utils.py:1889] decoder/layers/pre_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: ('tensor', None) I0423 14:49:49.423141 131993931294528 maxtext_utils.py:1889] decoder/layers/self_attention/key/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, 'tensor', None) I0423 14:49:49.423196 131993931294528 maxtext_utils.py:1889] decoder/layers/self_attention/out/kernel/value Shape: float32[16,16,128,2048] Physical: ('tensor', None, None, 'fsdp') I0423 14:49:49.423250 131993931294528 maxtext_utils.py:1889] decoder/layers/self_attention/query/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, 'tensor', None) I0423 14:49:49.423297 131993931294528 maxtext_utils.py:1889] decoder/layers/self_attention/value/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, 'tensor', None) I0423 14:49:49.423348 131993931294528 maxtext_utils.py:1889] decoder/logits_dense/kernel/value Shape: float32[2048,32000] Physical: ('fsdp', 'tensor') I0423 14:49:49.423391 131993931294528 maxtext_utils.py:1889] token_embedder/embedding/value Shape: float32[32000,2048] Physical: ('tensor', 'fsdp') I0423 14:49:49.829463 131993931294528 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0423 14:49:49.829564 131993931294528 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, 'tensor'). I0423 14:49:49.834894 131993931294528 nnx_decoders.py:465] Unknown Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0423 14:49:49.834950 131993931294528 nnx_decoders.py:465] Unknown Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, 'tensor'). I0423 14:49:49.851507 131993931294528 attentions.py:1088] attentions/inputs_q Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0423 14:49:49.851567 131993931294528 attentions.py:1088] attentions/inputs_q Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, 'tensor'). I0423 14:49:49.867488 131993931294528 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0423 14:49:49.867547 131993931294528 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, 'tensor'). I0423 14:49:49.891757 131993931294528 attentions.py:1154] attentions/query Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0423 14:49:49.891824 131993931294528 attentions.py:1154] attentions/query Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, 'tensor', None). I0423 14:49:49.907777 131993931294528 attentions.py:1155] attentions/key Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0423 14:49:49.907837 131993931294528 attentions.py:1155] attentions/key Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, 'tensor', None). I0423 14:49:49.923712 131993931294528 attentions.py:1156] attentions/value Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0423 14:49:49.923771 131993931294528 attentions.py:1156] attentions/value Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, 'tensor', None). I0423 14:49:49.954304 131993931294528 attentions.py:1198] attentions/out Logical: bfloat16[8,2048,16,128]..................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0423 14:49:49.954376 131993931294528 attentions.py:1198] attentions/out Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, 'tensor', None). I0423 14:49:49.974436 131993931294528 linears.py:525] linears/x Logical: bfloat16[8,2048,7168]....................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0423 14:49:49.974505 131993931294528 linears.py:525] linears/x Physical: bfloat16[8,2048,7168]....................................... ('fsdp', None, 'tensor'). I0423 14:50:05.277062 131993931294528 max_utils.py:791] Total memory size: 0.9 GB, Output size: 0.4 GB, Temp size: 0.5 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB. I0423 14:50:05.279427 131993931294528 metric_logger.py:301] number parameters: 1.104 billion I0423 14:50:06.224051 131993931294528 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0423 14:50:20.885735 131993931294528 checkpointing.py:798] Waited 14.661669731140137 seconds for step 0 to finish before starting checkpointing. I0423 14:50:20.887952 131993931294528 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0423 14:50:20.889935 131993931294528 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 0 I0423 14:50:20.891375 131993931294528 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_09_pdb_lt_1/checkpoints/0. I0423 14:50:21.218990 131993931294528 signaling_client.py:364] Using JaxDistributedSignalingClient I0423 14:50:21.220065 131993931294528 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0423 14:50:21.220141 131993931294528 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 14:50:21.487799 131993931294528 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.269566s I0423 14:50:21.487974 131993931294528 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.530 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2789456844329834 s) (per-host) I0423 14:50:21.488026 131993931294528 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.279008s (batch_requests_ready=0.003279s, total_serialization_initiated=0.275659s, others=0.000071s) I0423 14:50:21.488137 131993931294528 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.283246s (all_items=0.000017s, per_item={'items': '0.00001693'}, temp_paths=0.283229) I0423 14:50:21.488908 131993931294528 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.60 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_09_pdb_lt_1/checkpoints/0. I0423 14:50:21.489275 131866652034816 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 15:10:21.489232 I0423 14:50:21.511417 131993931294528 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0423 14:50:21.511774 131866157901568 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0423 14:50:21.511958 131993931294528 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_09_pdb_lt_1/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776955820.8879333, 'wait_for_prev_duration_secs': 6.0558319091796875e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776955820.8899739, 'checkpointer_blocking_duration_secs': 0.5994610786437988, 'get_old_steps_start_time': 1776955821.4894605, 'get_old_steps_duration_secs': 2.956390380859375e-05, 'checkpoint_manager_blocking_start_time': 1776955820.8861396, 'checkpoint_manager_blocking_duration_secs': 0.6257767677307129} I0423 14:50:21.512063 131993931294528 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0423 14:50:21.512143 131993931294528 max_utils.py:750] Memstats: After params initialized: I0423 14:50:21.512192 131993931294528 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_24(process=6,(0,6,0,0)) I0423 14:50:21.512224 131993931294528 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_25(process=6,(1,6,0,0)) I0423 14:50:21.512251 131993931294528 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_28(process=6,(0,7,0,0)) I0423 14:50:21.512276 131993931294528 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_29(process=6,(1,7,0,0)) I0423 14:50:21.821999 131993931294528 metric_logger.py:196] completed step: 0, seconds: 0.944, TFLOP/s/device: 3.600, Tokens/s/device: 542.629, total_weights: 16384, loss: 10.864, lm_loss: 10.864, perplexity: 52258.910 I0423 14:50:21.924801 131993931294528 metric_logger.py:196] completed step: 1, seconds: 15.596, TFLOP/s/device: 0.218, Tokens/s/device: 32.829, total_weights: 16384, loss: 10.864, lm_loss: 10.864, perplexity: 52258.910 I0423 14:50:22.336519 131993931294528 metric_logger.py:196] completed step: 2, seconds: 0.046, TFLOP/s/device: 74.234, Tokens/s/device: 11189.300, total_weights: 16384, loss: 9.760, lm_loss: 9.760, perplexity: 17319.064 I0423 14:50:22.394980 131993931294528 metric_logger.py:196] completed step: 3, seconds: 0.402, TFLOP/s/device: 8.455, Tokens/s/device: 1274.450, total_weights: 16384, loss: 8.820, lm_loss: 8.820, perplexity: 6771.344 I0423 14:50:22.512610 131993931294528 metric_logger.py:196] completed step: 4, seconds: 0.075, TFLOP/s/device: 45.312, Tokens/s/device: 6829.854, total_weights: 16384, loss: 7.947, lm_loss: 7.947, perplexity: 2825.893 I0423 14:50:22.520972 131993931294528 metric_logger.py:196] completed step: 5, seconds: 0.058, TFLOP/s/device: 58.648, Tokens/s/device: 8840.084, total_weights: 16384, loss: 7.209, lm_loss: 7.209, perplexity: 1352.040 I0423 14:50:24.591297 2504 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0423 14:50:27.236923 131870421538560 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_09_pdb_lt_1/checkpoints/0/items/array_metadatas/process_6 I0423 14:50:36.764610 131993931294528 metric_logger.py:196] completed step: 6, seconds: 0.119, TFLOP/s/device: 28.488, Tokens/s/device: 4294.041, total_weights: 16384, loss: 6.651, lm_loss: 6.651, perplexity: 773.347 I0423 14:50:36.823107 131993931294528 metric_logger.py:196] completed step: 7, seconds: 14.187, TFLOP/s/device: 0.239, Tokens/s/device: 36.090, total_weights: 16384, loss: 6.267, lm_loss: 6.267, perplexity: 526.951 I0423 14:50:36.881561 131993931294528 metric_logger.py:196] completed step: 8, seconds: 0.064, TFLOP/s/device: 53.018, Tokens/s/device: 7991.384, total_weights: 16384, loss: 6.030, lm_loss: 6.030, perplexity: 415.600 I0423 14:50:36.940726 131993931294528 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0423 14:50:36.941408 131993931294528 checkpointing.py:798] Waited 0.0006940364837646484 seconds for step 9 to finish before starting checkpointing. I0423 14:50:36.943452 131993931294528 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0423 14:50:57.452709 131866652034816 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 43.583 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 36.2436408996582 s) (per-host) I0423 14:50:57.452836 131866652034816 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 35.963445s. I0423 14:51:07.222424 131866652034816 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 45.733015s. I0423 14:51:07.222714 131866157901568 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0423 14:51:07.222839 131866157901568 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0423 14:51:07.222899 131866157901568 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0423 14:51:07.224882 131866157901568 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0423 14:51:07.225040 131993931294528 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 14:51:07.225185 131993931294528 checkpoint_manager.py:1452] Waiting for previous save to complete took 30.281735 seconds. If this number is high, consider checkpointing less frequently. I0423 14:51:07.227160 131993931294528 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 9 I0423 14:51:07.229144 131993931294528 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_09_pdb_lt_1/checkpoints/9. I0423 14:51:07.949566 131993931294528 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0423 14:51:07.949661 131993931294528 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 14:51:07.976961 131993931294528 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.029142s I0423 14:51:07.977090 131993931294528 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 42.747 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.036086320877075195 s) (per-host) I0423 14:51:07.977167 131993931294528 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.036169s (batch_requests_ready=0.002612s, total_serialization_initiated=0.033468s, others=0.000089s) I0423 14:51:07.977260 131993931294528 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.040365s (all_items=0.000015s, per_item={'items': '0.00001454'}, temp_paths=0.040350) I0423 14:51:07.977954 131993931294528 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.75 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_09_pdb_lt_1/checkpoints/9. I0423 14:51:07.978213 131866157901568 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 15:11:07.978191 I0423 14:51:07.981843 131993931294528 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0423 14:51:07.982159 131870998132480 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0423 14:51:07.982320 131993931294528 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_09_pdb_lt_1/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776955836.9434211, 'wait_for_prev_duration_secs': 30.281734943389893, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776955867.227198, 'checkpointer_blocking_duration_secs': 0.7511155605316162, 'get_old_steps_start_time': 1776955867.9783366, 'get_old_steps_duration_secs': 3.0994415283203125e-05, 'checkpoint_manager_blocking_start_time': 1776955836.9416456, 'checkpoint_manager_blocking_duration_secs': 31.04063868522644} I0423 14:51:07.982434 131993931294528 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0423 14:51:07.982479 131993931294528 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0423 14:51:14.388957 131860780799744 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_09_pdb_lt_1/checkpoints/9/items/array_metadatas/process_6 I0423 14:51:49.740548 131866157901568 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 37.790 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.79951810836792 s) (per-host) I0423 14:51:49.740657 131866157901568 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.762371s. I0423 14:51:58.108136 131866157901568 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 50.129812s. I0423 14:51:58.108423 131870998132480 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0423 14:51:58.108548 131870998132480 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0423 14:51:58.108597 131870998132480 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0423 14:51:58.110152 131870998132480 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0423 14:51:58.110302 131993931294528 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 14:51:58.110474 131993931294528 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0423 14:51:58.111398 131993931294528 metric_logger.py:196] completed step: 9, seconds: 0.058, TFLOP/s/device: 58.087, Tokens/s/device: 8755.579, total_weights: 16384, loss: 5.890, lm_loss: 5.890, perplexity: 361.390 Per train step: Total TFLOPs: 3.40 split as 93.93% learnable weight flops and 6.07% attention flops XPK End: Thu Apr 23 14:52:10 UTC 2026 EXIT_CODE=0