XPK Start: Sat Apr 25 20:27:04 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 20:27:29.187418: 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 20:27:29.397127 137441143306048 max_utils.py:273] Attempting to initialize the jax distributed system...
I0425 20:27:38.438096 137441143306048 distributed.py:149] Starting JAX distributed service on [::]:8482
I0425 20:27:38.440386 137441143306048 distributed.py:172] Connecting to JAX distributed service on mt-07-eval-fw3yv-slice-job-0-0.mt-07-eval-fw3yv:8482
I0425 20:27:39.746709 137441143306048 max_utils.py:284] Jax distributed system initialized!
I0425 20:27:45.883120 137441143306048 max_utils.py:800] System Information: Jax Version: 0.9.2
I0425 20:27:45.883224 137441143306048 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0425 20:27:45.883276 137441143306048 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 20:27:45.883311 137441143306048 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0425 20:27:46.572745 137441143306048 maxtext_utils.py:1565] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0425 20:27:46.573035 137441143306048 checkpointing.py:677] Setting up checkpoint logger...
I0425 20:27:46.573091 137441143306048 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True
I0425 20:27:46.573136 137441143306048 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0425 20:27:46.573467 137441143306048 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 0x7cffe191fda0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0425 20:27:49.624733 137441143306048 checkpointing.py:265] Enabling policy for fixed interval checkpointing.
I0425 20:27:49.624979 137441143306048 checkpoint_manager.py:708] [process=4][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7cebec2fdc40>}, handler_registry=None
I0425 20:27:49.625214 137441143306048 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7cebec2fdc40>` 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 20:27:49.625268 137441143306048 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7cebec394cb0>` 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 20:27:49.625305 137441143306048 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 0x7cebec2fdc40>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7cebec2fdc40>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7cebec394cb0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7cebec394cb0>}).
I0425 20:27:49.625617 137441143306048 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0425 20:27:49.625687 137441143306048 async_checkpointer.py:192] [process=4][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7cebcc6e72e0> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0425 20:27:50.629184 137441143306048 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_07_eval/checkpoints
I0425 20:27:51.091949 137441143306048 checkpoint_manager.py:929] [process=4][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/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_07_eval/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7cebec3910a0>
I0425 20:27:51.092122 137441143306048 checkpointing.py:301] Checkpoint manager created!
I0425 20:27:52.015914 137441143306048 nnx_wrappers.py:453] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0425 20:27:52.016032 137441143306048 nnx_wrappers.py:453] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0425 20:27:52.398768 137441143306048 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0425 20:27:52.398859 137441143306048 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0425 20:27:52.415211 137441143306048 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0425 20:27:52.415270 137441143306048 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0425 20:27:52.438909 137441143306048 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0425 20:27:52.438979 137441143306048 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 20:27:52.455451 137441143306048 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0425 20:27:52.455520 137441143306048 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 20:27:52.471866 137441143306048 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0425 20:27:52.471933 137441143306048 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 20:27:52.496592 137441143306048 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0425 20:27:52.496659 137441143306048 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 20:27:52.517695 137441143306048 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0425 20:27:52.517762 137441143306048 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0425 20:27:52.728440 137441143306048 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint
I0425 20:27:52.728555 137441143306048 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0425 20:27:54.148245 137441143306048 maxtext_utils.py:1668] params/params/decoder/decoder_norm/scale
Shape: float32[2048]
Logical: P('norm',)
Physical: (None,)
I0425 20:27:54.148372 137441143306048 maxtext_utils.py:1668] params/params/decoder/layers/mlp/wi_0/kernel
Shape: float32[2048,16,7168]
Logical: P('embed', 'layers', 'mlp')
Physical: ('fsdp', None, None)
I0425 20:27:54.148425 137441143306048 maxtext_utils.py:1668] params/params/decoder/layers/mlp/wi_1/kernel
Shape: float32[2048,16,7168]
Logical: P('embed', 'layers', 'mlp')
Physical: ('fsdp', None, None)
I0425 20:27:54.148485 137441143306048 maxtext_utils.py:1668] params/params/decoder/layers/mlp/wo/kernel
Shape: float32[7168,16,2048]
Logical: P('mlp', 'layers', 'embed')
Physical: (None, None, 'fsdp')
I0425 20:27:54.148535 137441143306048 maxtext_utils.py:1668] params/params/decoder/layers/post_self_attention_layer_norm/scale
Shape: float32[2048,16]
Logical: P('norm', 'layers')
Physical: (None, None)
I0425 20:27:54.148580 137441143306048 maxtext_utils.py:1668] params/params/decoder/layers/pre_self_attention_layer_norm/scale
Shape: float32[2048,16]
Logical: P('norm', 'layers')
Physical: (None, None)
I0425 20:27:54.148633 137441143306048 maxtext_utils.py:1668] params/params/decoder/layers/self_attention/key/kernel
Shape: float32[2048,16,16,128]
Logical: P('embed', 'layers', 'kv_heads', 'kv_head_dim')
Physical: ('fsdp', None, None, None)
I0425 20:27:54.148684 137441143306048 maxtext_utils.py:1668] params/params/decoder/layers/self_attention/out/kernel
Shape: float32[16,16,128,2048]
Logical: P('heads', 'layers', 'kv', 'embed')
Physical: (None, None, None, 'fsdp')
I0425 20:27:54.148723 137441143306048 maxtext_utils.py:1668] params/params/decoder/layers/self_attention/query/kernel
Shape: float32[2048,16,16,128]
Logical: P('embed', 'layers', 'q_heads', 'kv')
Physical: ('fsdp', None, None, None)
I0425 20:27:54.148758 137441143306048 maxtext_utils.py:1668] params/params/decoder/layers/self_attention/value/kernel
Shape: float32[2048,16,16,128]
Logical: P('embed', 'layers', 'kv_heads', 'kv_head_dim')
Physical: ('fsdp', None, None, None)
I0425 20:27:54.148803 137441143306048 maxtext_utils.py:1668] params/params/decoder/logits_dense/kernel
Shape: float32[2048,32000]
Logical: P('embed_vocab', 'vocab')
Physical: ('fsdp', None)
I0425 20:27:54.148849 137441143306048 maxtext_utils.py:1668] params/params/token_embedder/embedding
Shape: float32[32000,2048]
Logical: P('vocab', 'embed_vocab')
Physical: (None, 'fsdp')
I0425 20:27:54.640229 137441143306048 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0425 20:27:54.640325 137441143306048 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0425 20:27:54.655713 137441143306048 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0425 20:27:54.655770 137441143306048 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0425 20:28:05.626798 137441143306048 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 20:28:05.627603 137441143306048 metric_logger.py:301] number parameters: 1.104 billion
I0425 20:28:17.047677 137441143306048 checkpointing.py:772] Waiting for step 0 to finish before checkpoint...
I0425 20:28:17.201184 137441143306048 checkpointing.py:776] Waited 0.15348339080810547 seconds for step 0 to finish before starting checkpointing.
I0425 20:28:17.204610 137441143306048 checkpoint_manager.py:2009] [process=4][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0425 20:28:17.206113 137441143306048 checkpoint_manager.py:1512] [process=4] Saving checkpoint at step 0
I0425 20:28:17.207843 137441143306048 event_tracking.py:70] [process=4] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_07_eval/checkpoints/0.
I0425 20:28:17.955267 137441143306048 signaling_client.py:364] Using JaxDistributedSignalingClient
I0425 20:28:17.956355 137441143306048 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0425 20:28:17.956415 137441143306048 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 20:28:18.234986 137441143306048 base_pytree_checkpoint_handler.py:154] [process=4][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.279798s
I0425 20:28:18.235153 137441143306048 base_pytree_checkpoint_handler.py:130] [process=4] /jax/orbax/write/blocking_gbytes_per_sec: 5.410 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2851223945617676 s) (per-host)
I0425 20:28:18.235202 137441143306048 base_pytree_checkpoint_handler.py:768] [process=4][thread=MainThread] Initiated Pytree async_save. Time taken: 0.285182s (batch_requests_ready=0.002179s, total_serialization_initiated=0.282936s, others=0.000067s)
I0425 20:28:18.235317 137441143306048 composite_checkpoint_handler.py:715] [process=4][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.289894s (all_items=0.000018s, per_item={'items': '0.00001836'}, temp_paths=0.289875)
I0425 20:28:18.236159 137441143306048 event_tracking.py:125] [process=4] [async] Finished blocking save in 1.03 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_07_eval/checkpoints/0.
I0425 20:28:18.236467 137313929656064 async_checkpointer.py:76] [process=4][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 20:48:18.236432
I0425 20:28:18.247037 137441143306048 checkpoint_manager.py:1560] [process=4][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0425 20:28:18.247278 137312826550016 async_checkpointer.py:280] [process=4][thread=save_finalize] Waiting for background save thread=async_save.
I0425 20:28:18.247400 137441143306048 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777148897.2045906, 'wait_for_prev_duration_secs': 6.914138793945312e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777148897.2061522, 'checkpointer_blocking_duration_secs': 1.030473232269287, 'get_old_steps_start_time': 1777148898.2366533, 'get_old_steps_duration_secs': 2.8133392333984375e-05, 'checkpoint_manager_blocking_start_time': 1777148897.2016013, 'checkpoint_manager_blocking_duration_secs': 1.0457608699798584}
I0425 20:28:18.247504 137441143306048 checkpointing.py:408] Started an asynchronous checkpoint save for step 0
I0425 20:28:18.247554 137441143306048 max_utils.py:750]
Memstats: After params initialized:
I0425 20:28:18.247608 137441143306048 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_16(process=4,(0,4,0,0))
I0425 20:28:18.247641 137441143306048 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_17(process=4,(1,4,0,0))
I0425 20:28:18.247668 137441143306048 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_20(process=4,(0,5,0,0))
I0425 20:28:18.247693 137441143306048 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_21(process=4,(1,5,0,0))
I0425 20:28:18.560062 137441143306048 metric_logger.py:196] completed step: 0, seconds: 11.420, TFLOP/s/device: 1.190, Tokens/s/device: 179.335, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0425 20:28:18.732728 137441143306048 metric_logger.py:196] completed step: 1, seconds: 1.511, TFLOP/s/device: 8.993, Tokens/s/device: 1355.519, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0425 20:28:19.159697 137441143306048 metric_logger.py:196] completed step: 2, seconds: 0.025, TFLOP/s/device: 536.807, Tokens/s/device: 80913.437, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28637.129
I0425 20:28:19.306813 137441143306048 metric_logger.py:196] completed step: 3, seconds: 0.427, TFLOP/s/device: 31.804, Tokens/s/device: 4793.906, total_weights: 65536, loss: 9.734, lm_loss: 9.734, perplexity: 16889.203
I0425 20:28:19.601970 137441143306048 metric_logger.py:196] completed step: 4, seconds: 0.153, TFLOP/s/device: 88.845, Tokens/s/device: 13391.660, total_weights: 65536, loss: 9.277, lm_loss: 9.277, perplexity: 10694.614
I0425 20:28:19.607758 137441143306048 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.296, Tokens/s/device: 13911.909, total_weights: 65536, loss: 8.892, lm_loss: 8.892, perplexity: 7270.717
I0425 20:28:21.285457 2804 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0425 20:28:23.294456 137313337599744 array_metadata_store.py:203] [process=4][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_07_eval/checkpoints/0/items/array_metadatas/process_4
I0425 20:28:41.883955 137441143306048 metric_logger.py:196] completed step: 6, seconds: 0.296, TFLOP/s/device: 45.970, Tokens/s/device: 6929.149, total_weights: 65536, loss: 8.592, lm_loss: 8.592, perplexity: 5390.759
I0425 20:28:42.031292 137441143306048 metric_logger.py:196] completed step: 7, seconds: 22.129, TFLOP/s/device: 0.614, Tokens/s/device: 92.547, total_weights: 65536, loss: 8.384, lm_loss: 8.384, perplexity: 4376.905
I0425 20:28:42.178750 137441143306048 metric_logger.py:196] completed step: 8, seconds: 0.152, TFLOP/s/device: 89.191, Tokens/s/device: 13443.878, total_weights: 65536, loss: 8.255, lm_loss: 8.255, perplexity: 3846.406
I0425 20:28:42.325518 137441143306048 checkpointing.py:772] Waiting for step 9 to finish before checkpoint...
I0425 20:28:42.326204 137441143306048 checkpointing.py:776] Waited 0.0007073879241943359 seconds for step 9 to finish before starting checkpointing.
I0425 20:28:42.328206 137441143306048 checkpoint_manager.py:2020] [process=4][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0425 20:28:54.694100 137313929656064 base_pytree_checkpoint_handler.py:130] [process=4] /jax/orbax/write/gbytes_per_sec: 42.989 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 36.74402928352356 s) (per-host)
I0425 20:28:54.694226 137313929656064 async_checkpointer.py:90] [process=4][thread=async_save] 3 Handler Commit operations completed. Time taken: 36.457644s.
I0425 20:29:02.394487 137313929656064 async_checkpointer.py:160] [process=4][thread=async_save] Background save thread done. Time taken: 44.157889s.
I0425 20:29:02.394792 137312826550016 async_checkpointer.py:288] [process=4][thread=save_finalize] Done with waiting for background save thread=async_save.
I0425 20:29:02.394929 137312826550016 async_checkpointer.py:298] [process=4][thread=save_finalize] No errors found in background save thread=async_save.
I0425 20:29:02.394982 137312826550016 checkpoint_manager.py:2137] [process=4][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0425 20:29:02.396538 137312826550016 checkpoint_manager.py:2146] [process=4][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0425 20:29:02.396734 137441143306048 checkpoint_manager.py:2032] [process=4][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0.
W0425 20:29:02.396883 137441143306048 checkpoint_manager.py:1452] Waiting for previous save to complete took 20.068662 seconds. If this number is high, consider checkpointing less frequently.
I0425 20:29:02.398730 137441143306048 checkpoint_manager.py:1512] [process=4] Saving checkpoint at step 9
I0425 20:29:02.400894 137441143306048 event_tracking.py:70] [process=4] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_07_eval/checkpoints/9.
I0425 20:29:02.755332 137441143306048 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0425 20:29:02.755425 137441143306048 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 20:29:02.796941 137441143306048 base_pytree_checkpoint_handler.py:154] [process=4][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.042664s
I0425 20:29:02.797088 137441143306048 base_pytree_checkpoint_handler.py:130] [process=4] /jax/orbax/write/blocking_gbytes_per_sec: 32.968 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04678988456726074 s) (per-host)
I0425 20:29:02.797137 137441143306048 base_pytree_checkpoint_handler.py:768] [process=4][thread=MainThread] Initiated Pytree async_save. Time taken: 0.046848s (batch_requests_ready=0.002494s, total_serialization_initiated=0.044288s, others=0.000066s)
I0425 20:29:02.797219 137441143306048 composite_checkpoint_handler.py:715] [process=4][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.050966s (all_items=0.000017s, per_item={'items': '0.00001669'}, temp_paths=0.050950)
I0425 20:29:02.797961 137441143306048 event_tracking.py:125] [process=4] [async] Finished blocking save in 0.40 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_07_eval/checkpoints/9.
I0425 20:29:02.798339 137312826550016 async_checkpointer.py:76] [process=4][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 20:49:02.798298
I0425 20:29:02.800319 137441143306048 checkpoint_manager.py:1560] [process=4][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0425 20:29:02.800635 137287597803264 async_checkpointer.py:280] [process=4][thread=save_finalize] Waiting for background save thread=async_save.
I0425 20:29:02.800774 137441143306048 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777148922.328177, 'wait_for_prev_duration_secs': 20.0686616897583, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777148942.3987696, 'checkpointer_blocking_duration_secs': 0.3997225761413574, 'get_old_steps_start_time': 1777148942.798515, 'get_old_steps_duration_secs': 2.956390380859375e-05, 'checkpoint_manager_blocking_start_time': 1777148922.326428, 'checkpoint_manager_blocking_duration_secs': 20.474313020706177}
I0425 20:29:02.800948 137441143306048 checkpointing.py:408] Started an asynchronous checkpoint save for step 9
I0425 20:29:02.800994 137441143306048 checkpoint_manager.py:2020] [process=4][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0425 20:29:08.110966 137313337599744 array_metadata_store.py:203] [process=4][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_07_eval/checkpoints/9/items/array_metadatas/process_4
I0425 20:29:44.828772 137312826550016 base_pytree_checkpoint_handler.py:130] [process=4] /jax/orbax/write/gbytes_per_sec: 37.539 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.07843255996704 s) (per-host)
I0425 20:29:44.828923 137312826550016 async_checkpointer.py:90] [process=4][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.030461s.
I0425 20:29:52.322928 137312826550016 async_checkpointer.py:160] [process=4][thread=async_save] Background save thread done. Time taken: 49.524451s.
I0425 20:29:52.323241 137287597803264 async_checkpointer.py:288] [process=4][thread=save_finalize] Done with waiting for background save thread=async_save.
I0425 20:29:52.323391 137287597803264 async_checkpointer.py:298] [process=4][thread=save_finalize] No errors found in background save thread=async_save.
I0425 20:29:52.323441 137287597803264 checkpoint_manager.py:2137] [process=4][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0425 20:29:52.327708 137287597803264 checkpoint_manager.py:2146] [process=4][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0425 20:29:52.327910 137441143306048 checkpoint_manager.py:2032] [process=4][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9.
I0425 20:29:52.328062 137441143306048 checkpoint_manager.py:2009] [process=4][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0425 20:29:52.329044 137441143306048 metric_logger.py:196] completed step: 9, seconds: 0.147, TFLOP/s/device: 92.229, Tokens/s/device: 13901.711, total_weights: 65536, loss: 8.179, lm_loss: 8.179, perplexity: 3564.635
Per train step:
Total TFLOPs: 13.59
split as 93.93% learnable weight flops and 6.07% attention flops
XPK End: Sat Apr 25 20:30:04 UTC 2026
EXIT_CODE=0