MaxView

XPK Start: Wed Apr 22 21:33:55 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. 
2026-04-22 21:34:28.810033: 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)
I0422 21:34:29.019387 133430344496960 max_utils.py:273] Attempting to initialize the jax distributed system...
I0422 21:34:38.061075 133430344496960 distributed.py:149] Starting JAX distributed service on [::]:8482
I0422 21:34:38.063377 133430344496960 distributed.py:172] Connecting to JAX distributed service on mt-03-dropout-mckx4-slice-job-0-0.mt-03-dropout-mckx4:8482
I0422 21:35:20.772878 133430344496960 max_utils.py:284] Jax distributed system initialized!
I0422 21:35:26.681656 133430344496960 max_utils.py:800] System Information: Jax Version: 0.9.2
I0422 21:35:26.681762 133430344496960 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0422 21:35:26.681802 133430344496960 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
I0422 21:35:26.681838 133430344496960 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0422 21:35:27.371356 133430344496960 maxtext_utils.py:1565] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0422 21:35:27.371643 133430344496960 checkpointing.py:677] Setting up checkpoint logger...
I0422 21:35:27.371702 133430344496960 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True
I0422 21:35:27.371746 133430344496960 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0422 21:35:27.372109 133430344496960 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 0x795a0b71c200>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0422 21:35:30.679790 133430344496960 checkpointing.py:265] Enabling policy for fixed interval checkpointing.
I0422 21:35:30.680048 133430344496960 checkpoint_manager.py:708] [process=3][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7946403df950>}, handler_registry=None
I0422 21:35:30.680297 133430344496960 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7946403df950>` 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`.
I0422 21:35:30.680347 133430344496960 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7946403e46b0>` 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`.
I0422 21:35:30.680382 133430344496960 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 0x7946403df950>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7946403df950>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7946403e46b0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7946403e46b0>}).
I0422 21:35:30.680711 133430344496960 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0422 21:35:30.680782 133430344496960 async_checkpointer.py:192] [process=3][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x79464022b2e0> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0422 21:35:32.055819 133430344496960 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_03_dropout/checkpoints
I0422 21:35:32.516328 133430344496960 checkpoint_manager.py:929] [process=3][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_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_03_dropout/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7946680d75f0>
I0422 21:35:32.516517 133430344496960 checkpointing.py:301] Checkpoint manager created!
I0422 21:35:32.863545 133430344496960 nnx_wrappers.py:453] Unknown Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0422 21:35:32.863660 133430344496960 nnx_wrappers.py:453] Unknown Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None).
I0422 21:35:33.252142 133430344496960 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0422 21:35:33.252234 133430344496960 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None).
I0422 21:35:33.268813 133430344496960 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0422 21:35:33.268874 133430344496960 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None).
I0422 21:35:33.292979 133430344496960 attentions.py:1154] attentions/query Logical: bfloat16[32,128,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0422 21:35:33.293045 133430344496960 attentions.py:1154] attentions/query Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None).
I0422 21:35:33.309782 133430344496960 attentions.py:1155] attentions/key Logical: bfloat16[32,128,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0422 21:35:33.309844 133430344496960 attentions.py:1155] attentions/key Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None).
I0422 21:35:33.326434 133430344496960 attentions.py:1156] attentions/value Logical: bfloat16[32,128,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0422 21:35:33.326501 133430344496960 attentions.py:1156] attentions/value Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None).
I0422 21:35:33.351589 133430344496960 attentions.py:1198] attentions/out Logical: bfloat16[32,128,16,128]..................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0422 21:35:33.351662 133430344496960 attentions.py:1198] attentions/out Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None).
I0422 21:35:33.377999 133430344496960 linears.py:525] linears/x Logical: bfloat16[32,128,7168]....................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0422 21:35:33.378067 133430344496960 linears.py:525] linears/x Physical: bfloat16[32,128,7168]....................................... ('fsdp', None, None).
I0422 21:35:33.604462 133430344496960 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint
I0422 21:35:33.604574 133430344496960 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0422 21:35:35.070442 133430344496960 maxtext_utils.py:1668]  params/params/decoder/decoder_norm/scale
    Shape:     float32[2048]
    Logical:   P('norm',)
    Physical:  (None,)
I0422 21:35:35.070572 133430344496960 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)
I0422 21:35:35.070625 133430344496960 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)
I0422 21:35:35.070682 133430344496960 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')
I0422 21:35:35.070739 133430344496960 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)
I0422 21:35:35.070778 133430344496960 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)
I0422 21:35:35.070830 133430344496960 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)
I0422 21:35:35.070881 133430344496960 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')
I0422 21:35:35.070921 133430344496960 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)
I0422 21:35:35.070973 133430344496960 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)
I0422 21:35:35.071022 133430344496960 maxtext_utils.py:1668]  params/params/decoder/logits_dense/kernel
    Shape:     float32[2048,32000]
    Logical:   P('embed_vocab', 'vocab')
    Physical:  ('fsdp', None)

I0422 21:35:35.071072 133430344496960 maxtext_utils.py:1668]  params/params/token_embedder/embedding
    Shape:     float32[32000,2048]
    Logical:   P('vocab', 'embed_vocab')
    Physical:  (None, 'fsdp')
I0422 21:35:35.609781 133430344496960 train.py:155] train/xent Logical: float32[32,128]............................................. ('activation_embed_and_logits_batch', 'activation_length').
I0422 21:35:35.609876 133430344496960 train.py:155] train/xent Physical: float32[32,128]............................................. ('fsdp', None).
I0422 21:35:35.626530 133430344496960 train.py:162] train/z_loss Logical: float32[32,128]............................................. ('activation_embed_and_logits_batch', 'activation_length').
I0422 21:35:35.626593 133430344496960 train.py:162] train/z_loss Physical: float32[32,128]............................................. ('fsdp', None).
I0422 21:35:39.200146 133430344496960 max_utils.py:791] Total memory size: 0.8 GB, Output size: 0.4 GB, Temp size: 0.4 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB.
I0422 21:35:39.200970 133430344496960 metric_logger.py:301] number parameters: 1.104 billion
I0422 21:35:43.792863 133430344496960 checkpointing.py:772] Waiting for step 0 to finish before checkpoint...
I0422 21:35:43.865316 133430344496960 checkpointing.py:776] Waited 0.07244205474853516 seconds for step 0 to finish before starting checkpointing.
I0422 21:35:43.867908 133430344496960 checkpoint_manager.py:2009] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0422 21:35:43.869862 133430344496960 checkpoint_manager.py:1512] [process=3] Saving checkpoint at step 0
I0422 21:35:43.871295 133430344496960 event_tracking.py:70] [process=3] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_03_dropout/checkpoints/0.
I0422 21:35:44.649203 133430344496960 signaling_client.py:364] Using JaxDistributedSignalingClient
I0422 21:35:44.650108 133430344496960 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0422 21:35:44.650168 133430344496960 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
I0422 21:35:44.928395 133430344496960 base_pytree_checkpoint_handler.py:154] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.279273s
I0422 21:35:44.928567 133430344496960 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/blocking_gbytes_per_sec: 5.411 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.285067081451416 s) (per-host)
I0422 21:35:44.928617 133430344496960 base_pytree_checkpoint_handler.py:768] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.285126s (batch_requests_ready=0.002503s, total_serialization_initiated=0.282555s, others=0.000068s)
I0422 21:35:44.928729 133430344496960 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.289512s (all_items=0.000018s, per_item={'items': '0.00001836'}, temp_paths=0.289494)
I0422 21:35:44.929510 133430344496960 event_tracking.py:125] [process=3] [async] Finished blocking save in 1.06 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_03_dropout/checkpoints/0.
I0422 21:35:44.929849 133302899963648 async_checkpointer.py:76] [process=3][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 21:55:44.929811
I0422 21:35:44.939023 133430344496960 checkpoint_manager.py:1560] [process=3][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0422 21:35:44.939334 133301826221824 async_checkpointer.py:280] [process=3][thread=save_finalize] Waiting for background save thread=async_save.
I0422 21:35:44.939489 133430344496960 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_03_dropout/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776893743.8678894, 'wait_for_prev_duration_secs': 7.319450378417969e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776893743.8699017, 'checkpointer_blocking_duration_secs': 1.060054063796997, 'get_old_steps_start_time': 1776893744.9299808, 'get_old_steps_duration_secs': 2.956390380859375e-05, 'checkpoint_manager_blocking_start_time': 1776893743.865849, 'checkpoint_manager_blocking_duration_secs': 1.0736017227172852}
I0422 21:35:44.939594 133430344496960 checkpointing.py:408] Started an asynchronous checkpoint save for step 0
I0422 21:35:44.939643 133430344496960 max_utils.py:750] 
Memstats: After params initialized:
I0422 21:35:44.939691 133430344496960 max_utils.py:756] 	Using (GB) 0.41 / 31.25 (1.312000%) on TPU_10(process=3,(2,2,0,0))
I0422 21:35:44.939727 133430344496960 max_utils.py:756] 	Using (GB) 0.41 / 31.25 (1.312000%) on TPU_11(process=3,(3,2,0,0))
I0422 21:35:44.939759 133430344496960 max_utils.py:756] 	Using (GB) 0.41 / 31.25 (1.312000%) on TPU_14(process=3,(2,3,0,0))
I0422 21:35:44.939787 133430344496960 max_utils.py:756] 	Using (GB) 0.41 / 31.25 (1.312000%) on TPU_15(process=3,(3,3,0,0))
I0422 21:35:45.251204 133430344496960 metric_logger.py:196] completed step: 0, seconds: 4.592, TFLOP/s/device: 0.174, Tokens/s/device: 27.876, total_weights: 4096, loss: 10.889, lm_loss: 10.889, perplexity: 53560.699
I0422 21:35:45.347524 133430344496960 metric_logger.py:196] completed step: 1, seconds: 1.457, TFLOP/s/device: 0.550, Tokens/s/device: 87.869, total_weights: 4096, loss: 10.902, lm_loss: 10.902, perplexity: 54298.523
I0422 21:35:45.748689 133430344496960 metric_logger.py:196] completed step: 2, seconds: 0.026, TFLOP/s/device: 30.536, Tokens/s/device: 4880.467, total_weights: 4096, loss: 9.956, lm_loss: 9.956, perplexity: 21082.051
I0422 21:35:45.819671 133430344496960 metric_logger.py:196] completed step: 3, seconds: 0.402, TFLOP/s/device: 1.994, Tokens/s/device: 318.708, total_weights: 4096, loss: 9.139, lm_loss: 9.139, perplexity: 9314.691
I0422 21:35:45.961152 133430344496960 metric_logger.py:196] completed step: 4, seconds: 0.076, TFLOP/s/device: 10.548, Tokens/s/device: 1685.896, total_weights: 4096, loss: 8.459, lm_loss: 8.459, perplexity: 4715.493
I0422 21:35:45.967455 133430344496960 metric_logger.py:196] completed step: 5, seconds: 0.071, TFLOP/s/device: 11.326, Tokens/s/device: 1810.160, total_weights: 4096, loss: 7.924, lm_loss: 7.924, perplexity: 2762.373
I0422 21:35:49.040900    2803 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0422 21:35:52.872916 133302306219776 array_metadata_store.py:203] [process=3][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_03_dropout/checkpoints/0/items/array_metadatas/process_3
I0422 21:35:57.486850 133430344496960 metric_logger.py:196] completed step: 6, seconds: 0.142, TFLOP/s/device: 5.629, Tokens/s/device: 899.685, total_weights: 4096, loss: 7.553, lm_loss: 7.553, perplexity: 1906.617
I0422 21:35:57.557667 133430344496960 metric_logger.py:196] completed step: 7, seconds: 11.450, TFLOP/s/device: 0.070, Tokens/s/device: 11.179, total_weights: 4096, loss: 7.267, lm_loss: 7.267, perplexity: 1431.653
I0422 21:35:57.628463 133430344496960 metric_logger.py:196] completed step: 8, seconds: 0.075, TFLOP/s/device: 10.611, Tokens/s/device: 1695.836, total_weights: 4096, loss: 7.111, lm_loss: 7.111, perplexity: 1225.983
I0422 21:35:57.698398 133430344496960 checkpointing.py:772] Waiting for step 9 to finish before checkpoint...
I0422 21:35:57.699075 133430344496960 checkpointing.py:776] Waited 0.0006949901580810547 seconds for step 9 to finish before starting checkpointing.
I0422 21:35:57.701079 133430344496960 checkpoint_manager.py:2020] [process=3][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0422 21:36:18.142272 133302899963648 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/gbytes_per_sec: 47.154 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 33.49874973297119 s) (per-host)
I0422 21:36:18.142376 133302899963648 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 33.211882s.
I0422 21:36:25.976089 133302899963648 async_checkpointer.py:160] [process=3][thread=async_save] Background save thread done. Time taken: 41.045577s.
I0422 21:36:25.976382 133301826221824 async_checkpointer.py:288] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save.
I0422 21:36:25.976521 133301826221824 async_checkpointer.py:298] [process=3][thread=save_finalize] No errors found in background save thread=async_save.
I0422 21:36:25.976588 133301826221824 checkpoint_manager.py:2137] [process=3][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0422 21:36:25.977942 133301826221824 checkpoint_manager.py:2146] [process=3][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0422 21:36:25.978106 133430344496960 checkpoint_manager.py:2032] [process=3][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0.
W0422 21:36:25.978240 133430344496960 checkpoint_manager.py:1452] Waiting for previous save to complete took 28.277162 seconds. If this number is high, consider checkpointing less frequently.
I0422 21:36:25.980262 133430344496960 checkpoint_manager.py:1512] [process=3] Saving checkpoint at step 9
I0422 21:36:25.982304 133430344496960 event_tracking.py:70] [process=3] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_03_dropout/checkpoints/9.
I0422 21:36:26.681839 133430344496960 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0422 21:36:26.681941 133430344496960 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
I0422 21:36:26.721220 133430344496960 base_pytree_checkpoint_handler.py:154] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.040515s
I0422 21:36:26.721382 133430344496960 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/blocking_gbytes_per_sec: 34.956 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.044129133224487305 s) (per-host)
I0422 21:36:26.721434 133430344496960 base_pytree_checkpoint_handler.py:768] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.044191s (batch_requests_ready=0.001954s, total_serialization_initiated=0.042168s, others=0.000070s)
I0422 21:36:26.721531 133430344496960 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.048482s (all_items=0.000015s, per_item={'items': '0.00001526'}, temp_paths=0.048466)
I0422 21:36:26.722250 133430344496960 event_tracking.py:125] [process=3] [async] Finished blocking save in 0.74 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_03_dropout/checkpoints/9.
I0422 21:36:26.722602 133301826221824 async_checkpointer.py:76] [process=3][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 21:56:26.722564
I0422 21:36:26.724478 133430344496960 checkpoint_manager.py:1560] [process=3][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0422 21:36:26.724711 133302306219776 async_checkpointer.py:280] [process=3][thread=save_finalize] Waiting for background save thread=async_save.
I0422 21:36:26.724847 133430344496960 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_03_dropout/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776893757.7010486, 'wait_for_prev_duration_secs': 28.277161598205566, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776893785.9803, 'checkpointer_blocking_duration_secs': 0.7424519062042236, 'get_old_steps_start_time': 1776893786.7227755, 'get_old_steps_duration_secs': 3.218650817871094e-05, 'checkpoint_manager_blocking_start_time': 1776893757.6993, 'checkpoint_manager_blocking_duration_secs': 29.025514602661133}
I0422 21:36:26.725014 133430344496960 checkpointing.py:408] Started an asynchronous checkpoint save for step 9
I0422 21:36:26.725060 133430344496960 checkpoint_manager.py:2020] [process=3][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0422 21:36:33.750723 133277771765504 array_metadata_store.py:203] [process=3][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_03_dropout/checkpoints/9/items/array_metadatas/process_3
I0422 21:37:09.395481 133301826221824 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/gbytes_per_sec: 36.977 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.71818399429321 s) (per-host)
I0422 21:37:09.395605 133301826221824 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.672887s.
I0422 21:37:17.546344 133301826221824 async_checkpointer.py:160] [process=3][thread=async_save] Background save thread done. Time taken: 50.823611s.
I0422 21:37:17.546646 133302306219776 async_checkpointer.py:288] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save.
I0422 21:37:17.546769 133302306219776 async_checkpointer.py:298] [process=3][thread=save_finalize] No errors found in background save thread=async_save.
I0422 21:37:17.546819 133302306219776 checkpoint_manager.py:2137] [process=3][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0422 21:37:17.548445 133302306219776 checkpoint_manager.py:2146] [process=3][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0422 21:37:17.548616 133430344496960 checkpoint_manager.py:2032] [process=3][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9.
I0422 21:37:17.548768 133430344496960 checkpoint_manager.py:2009] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0422 21:37:17.549710 133430344496960 metric_logger.py:196] completed step: 9, seconds: 0.071, TFLOP/s/device: 11.316, Tokens/s/device: 1808.574, total_weights: 4096, loss: 6.981, lm_loss: 6.981, perplexity: 1075.867
Per train step:
 Total TFLOPs: 0.80 
 split as 99.60% learnable weight flops and 0.40% attention flops
XPK End: Wed Apr 22 21:37:30 UTC 2026
EXIT_CODE=0