XPK Start: Thu Apr 23 14:53:12 UTC 2026 PyTorch was not found. Models won't be available and only tokenizers, configuration and file/data utilities can be used. `rope_parameters`'s factor field must be a float >= 1, got 40 `rope_parameters`'s beta_fast field must be a float, got 32 `rope_parameters`'s beta_slow field must be a float, got 1 DeepseekV32Config got `key=rope_scaling` in kwargs but hasn't set it as attribute. For RoPE standardization you need to set `self.rope_parameters` in model's config. 2026-04-23 14:53:37.215069: 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 14:53:37.424406 133625288116032 max_utils.py:273] Attempting to initialize the jax distributed system... I0423 14:53:46.473345 133625288116032 distributed.py:149] Starting JAX distributed service on [::]:8482 I0423 14:53:46.475742 133625288116032 distributed.py:172] Connecting to JAX distributed service on mt-10-shardy-false-pon2g-slice-job-0-0.mt-10-shardy-false-pon2g:8482 I0423 14:53:47.464930 133625288116032 max_utils.py:284] Jax distributed system initialized! I0423 14:53:53.519082 133625288116032 max_utils.py:800] System Information: Jax Version: 0.9.2 I0423 14:53:53.519208 133625288116032 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0423 14:53:53.519249 133625288116032 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 14:53:53.519286 133625288116032 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0423 14:53:54.213580 133625288116032 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0423 14:53:54.327138 133625288116032 checkpointing.py:688] Setting up checkpoint logger... I0423 14:53:54.327258 133625288116032 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0423 14:53:54.327304 133625288116032 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0423 14:53:54.327508 133625288116032 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 0x798783517770>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0423 14:53:57.327081 133625288116032 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0423 14:53:57.327339 133625288116032 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 0x7973681cba70>}, handler_registry=None I0423 14:53:57.327589 133625288116032 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7973681cba70>` 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 14:53:57.327639 133625288116032 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x79732841b920>` 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 14:53:57.327675 133625288116032 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 0x7973681cba70>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7973681cba70>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x79732841b920>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x79732841b920>}). I0423 14:53:57.327999 133625288116032 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0423 14:53:57.328070 133625288116032 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x79732843f600> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0423 14:53:58.476313 133625288116032 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_10_shardy_false/checkpoints I0423 14:53:58.912781 133625288116032 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_10_shardy_false/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7973682b7260> I0423 14:53:58.912962 133625288116032 checkpointing.py:302] Checkpoint manager created! I0423 14:53:59.887233 133625288116032 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0423 14:53:59.887360 133625288116032 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0423 14:54:01.220473 133625288116032 maxtext_utils.py:1889] decoder/decoder_norm/scale/value Shape: float32[2048] Physical: (None,) I0423 14:54:01.220592 133625288116032 maxtext_utils.py:1889] decoder/layers/mlp/wi_0/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, None) I0423 14:54:01.220644 133625288116032 maxtext_utils.py:1889] decoder/layers/mlp/wi_1/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, None) I0423 14:54:01.220686 133625288116032 maxtext_utils.py:1889] decoder/layers/mlp/wo/kernel/value Shape: float32[7168,16,2048] Physical: (None, None, 'fsdp') I0423 14:54:01.220722 133625288116032 maxtext_utils.py:1889] decoder/layers/post_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: (None, None) I0423 14:54:01.220756 133625288116032 maxtext_utils.py:1889] decoder/layers/pre_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: (None, None) I0423 14:54:01.220789 133625288116032 maxtext_utils.py:1889] decoder/layers/self_attention/key/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0423 14:54:01.220823 133625288116032 maxtext_utils.py:1889] decoder/layers/self_attention/out/kernel/value Shape: float32[16,16,128,2048] Physical: (None, None, None, 'fsdp') I0423 14:54:01.220856 133625288116032 maxtext_utils.py:1889] decoder/layers/self_attention/query/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0423 14:54:01.220888 133625288116032 maxtext_utils.py:1889] decoder/layers/self_attention/value/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0423 14:54:01.220920 133625288116032 maxtext_utils.py:1889] decoder/logits_dense/kernel/value Shape: float32[2048,32000] Physical: ('fsdp', None) I0423 14:54:01.220952 133625288116032 maxtext_utils.py:1889] token_embedder/embedding/value Shape: float32[32000,2048] Physical: (None, 'fsdp') I0423 14:54:01.633290 133625288116032 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0423 14:54:01.633397 133625288116032 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0423 14:54:01.638672 133625288116032 nnx_decoders.py:465] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0423 14:54:01.638729 133625288116032 nnx_decoders.py:465] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0423 14:54:01.655452 133625288116032 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0423 14:54:01.655514 133625288116032 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0423 14:54:01.671368 133625288116032 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0423 14:54:01.671427 133625288116032 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0423 14:54:01.695419 133625288116032 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 14:54:01.695486 133625288116032 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0423 14:54:01.711572 133625288116032 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 14:54:01.711634 133625288116032 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0423 14:54:01.727603 133625288116032 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 14:54:01.727665 133625288116032 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0423 14:54:01.758656 133625288116032 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0423 14:54:01.758730 133625288116032 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0423 14:54:01.778744 133625288116032 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0423 14:54:01.778806 133625288116032 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0423 14:54:13.096337 133625288116032 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 14:54:13.098605 133625288116032 metric_logger.py:301] number parameters: 1.104 billion I0423 14:54:24.314138 133625288116032 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0423 14:54:24.465960 133625288116032 checkpointing.py:798] Waited 0.15180730819702148 seconds for step 0 to finish before starting checkpointing. I0423 14:54:24.468312 133625288116032 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0423 14:54:24.470067 133625288116032 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 0 I0423 14:54:24.471446 133625288116032 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_10_shardy_false/checkpoints/0. I0423 14:54:24.814158 133625288116032 signaling_client.py:364] Using JaxDistributedSignalingClient I0423 14:54:24.815124 133625288116032 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0423 14:54:24.815180 133625288116032 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 14:54:25.092819 133625288116032 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.279427s I0423 14:54:25.092995 133625288116032 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.341 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.28884220123291016 s) (per-host) I0423 14:54:25.093050 133625288116032 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.288908s (batch_requests_ready=0.002895s, total_serialization_initiated=0.285940s, others=0.000074s) I0423 14:54:25.093165 133625288116032 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.293039s (all_items=0.000017s, per_item={'items': '0.00001740'}, temp_paths=0.293022) I0423 14:54:25.093895 133625288116032 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_10_shardy_false/checkpoints/0. I0423 14:54:25.094247 133497021462272 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 15:14:25.094209 I0423 14:54:25.099117 133625288116032 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0423 14:54:25.099407 133495787591424 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0423 14:54:25.099541 133625288116032 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_10_shardy_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776956064.4682918, 'wait_for_prev_duration_secs': 6.29425048828125e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776956064.4701195, 'checkpointer_blocking_duration_secs': 0.6242823600769043, 'get_old_steps_start_time': 1776956065.0944257, 'get_old_steps_duration_secs': 2.8848648071289062e-05, 'checkpoint_manager_blocking_start_time': 1776956064.4663782, 'checkpoint_manager_blocking_duration_secs': 0.6331274509429932} I0423 14:54:25.099703 133625288116032 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0423 14:54:25.099766 133625288116032 max_utils.py:750] Memstats: After params initialized: I0423 14:54:25.099813 133625288116032 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_24(process=6,(0,6,0,0)) I0423 14:54:25.099844 133625288116032 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_25(process=6,(1,6,0,0)) I0423 14:54:25.099870 133625288116032 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_28(process=6,(0,7,0,0)) I0423 14:54:25.099893 133625288116032 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_29(process=6,(1,7,0,0)) I0423 14:54:25.419644 133625288116032 metric_logger.py:196] completed step: 0, seconds: 11.214, TFLOP/s/device: 1.212, Tokens/s/device: 182.621, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52786.469 I0423 14:54:25.595493 133625288116032 metric_logger.py:196] completed step: 1, seconds: 1.104, TFLOP/s/device: 12.311, Tokens/s/device: 1855.624, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52786.469 I0423 14:54:26.024156 133625288116032 metric_logger.py:196] completed step: 2, seconds: 0.029, TFLOP/s/device: 461.237, Tokens/s/device: 69522.710, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28632.133 I0423 14:54:26.171835 133625288116032 metric_logger.py:196] completed step: 3, seconds: 0.418, TFLOP/s/device: 32.481, Tokens/s/device: 4895.949, total_weights: 65536, loss: 9.732, lm_loss: 9.732, perplexity: 16855.789 I0423 14:54:26.467540 133625288116032 metric_logger.py:196] completed step: 4, seconds: 0.165, TFLOP/s/device: 82.491, Tokens/s/device: 12433.899, total_weights: 65536, loss: 9.274, lm_loss: 9.274, perplexity: 10661.594 I0423 14:54:26.474812 133625288116032 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.294, Tokens/s/device: 13911.531, total_weights: 65536, loss: 8.888, lm_loss: 8.888, perplexity: 7245.978 I0423 14:54:28.126882 2775 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0423 14:54:30.289083 133495795984128 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_10_shardy_false/checkpoints/0/items/array_metadatas/process_6 I0423 14:54:48.624233 133625288116032 metric_logger.py:196] completed step: 6, seconds: 0.296, TFLOP/s/device: 45.869, Tokens/s/device: 6913.850, total_weights: 65536, loss: 8.589, lm_loss: 8.589, perplexity: 5371.156 I0423 14:54:48.771615 133625288116032 metric_logger.py:196] completed step: 7, seconds: 22.003, TFLOP/s/device: 0.618, Tokens/s/device: 93.079, total_weights: 65536, loss: 8.380, lm_loss: 8.380, perplexity: 4360.465 I0423 14:54:48.919018 133625288116032 metric_logger.py:196] completed step: 8, seconds: 0.153, TFLOP/s/device: 88.580, Tokens/s/device: 13351.762, total_weights: 65536, loss: 8.251, lm_loss: 8.251, perplexity: 3831.256 I0423 14:54:49.067111 133625288116032 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0423 14:54:49.067741 133625288116032 checkpointing.py:798] Waited 0.0006558895111083984 seconds for step 9 to finish before starting checkpointing. I0423 14:54:49.069935 133625288116032 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0423 14:55:02.338566 133497021462272 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 42.084 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 37.53437685966492 s) (per-host) I0423 14:55:02.338686 133497021462272 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 37.244324s. I0423 14:55:10.235174 133497021462272 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 45.140795s. I0423 14:55:10.235450 133495787591424 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0423 14:55:10.235563 133495787591424 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0423 14:55:10.235614 133495787591424 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0423 14:55:10.237382 133495787591424 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0423 14:55:10.237565 133625288116032 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 14:55:10.237699 133625288116032 checkpoint_manager.py:1452] Waiting for previous save to complete took 21.167764 seconds. If this number is high, consider checkpointing less frequently. I0423 14:55:10.239738 133625288116032 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 9 I0423 14:55:10.241640 133625288116032 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_10_shardy_false/checkpoints/9. I0423 14:55:10.717874 133625288116032 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0423 14:55:10.717970 133625288116032 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 14:55:10.753550 133625288116032 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.037444s I0423 14:55:10.753712 133625288116032 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 34.695 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04446053504943848 s) (per-host) I0423 14:55:10.753762 133625288116032 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.044519s (batch_requests_ready=0.002608s, total_serialization_initiated=0.041845s, others=0.000067s) I0423 14:55:10.753855 133625288116032 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.048635s (all_items=0.000016s, per_item={'items': '0.00001574'}, temp_paths=0.048619) I0423 14:55:10.754544 133625288116032 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.51 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_10_shardy_false/checkpoints/9. I0423 14:55:10.754914 133495787591424 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 15:15:10.754876 I0423 14:55:10.760250 133625288116032 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0423 14:55:10.760542 133473784243968 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0423 14:55:10.760703 133625288116032 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_10_shardy_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776956089.0699058, 'wait_for_prev_duration_secs': 21.16776394844055, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776956110.2397802, 'checkpointer_blocking_duration_secs': 0.5152726173400879, 'get_old_steps_start_time': 1776956110.7550774, 'get_old_steps_duration_secs': 4.100799560546875e-05, 'checkpoint_manager_blocking_start_time': 1776956089.0679777, 'checkpoint_manager_blocking_duration_secs': 21.692689657211304} I0423 14:55:10.760813 133625288116032 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0423 14:55:10.760861 133625288116032 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0423 14:55:16.089417 133495795984128 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_10_shardy_false/checkpoints/9/items/array_metadatas/process_6 I0423 14:55:52.532853 133495787591424 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 37.768 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.82356095314026 s) (per-host) I0423 14:55:52.532978 133495787591424 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.777954s. I0423 14:56:01.702579 133495787591424 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 50.947538s. I0423 14:56:01.702867 133473784243968 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0423 14:56:01.702985 133473784243968 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0423 14:56:01.703034 133473784243968 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0423 14:56:01.705611 133473784243968 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0423 14:56:01.705785 133625288116032 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 14:56:01.705953 133625288116032 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0423 14:56:01.706954 133625288116032 metric_logger.py:196] completed step: 9, seconds: 0.148, TFLOP/s/device: 92.003, Tokens/s/device: 13867.728, 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 14:56:12 UTC 2026 EXIT_CODE=0