MaxView

XPK Start: Tue Apr 21 06:22:00 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. 
2026-04-21 06:22:36.138486: 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)
I0421 06:22:36.346997 136050425059136 max_utils.py:273] Attempting to initialize the jax distributed system...
I0421 06:22:45.388629 136050425059136 distributed.py:149] Starting JAX distributed service on [::]:8482
I0421 06:22:45.390970 136050425059136 distributed.py:172] Connecting to JAX distributed service on mt-03-dropout-ur475-slice-job-0-0.mt-03-dropout-ur475:8482
I0421 06:22:49.644694 136050425059136 max_utils.py:284] Jax distributed system initialized!
I0421 06:22:55.728944 136050425059136 max_utils.py:800] System Information: Jax Version: 0.9.2
I0421 06:22:55.729050 136050425059136 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0421 06:22:55.729091 136050425059136 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
I0421 06:22:55.729129 136050425059136 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0421 06:22:56.423088 136050425059136 maxtext_utils.py:1565] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0421 06:22:56.423371 136050425059136 checkpointing.py:677] Setting up checkpoint logger...
I0421 06:22:56.423426 136050425059136 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True
I0421 06:22:56.423472 136050425059136 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0421 06:22:56.423831 136050425059136 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 0x7bbc25f1dd90>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0421 06:22:59.638363 136050425059136 checkpointing.py:265] Enabling policy for fixed interval checkpointing.
I0421 06:22:59.638599 136050425059136 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 0x7ba7ec23de80>}, handler_registry=None
I0421 06:22:59.638848 136050425059136 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7ba7ec23de80>` 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`.
I0421 06:22:59.638899 136050425059136 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7ba7ec241f40>` 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`.
I0421 06:22:59.638935 136050425059136 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 0x7ba7ec23de80>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7ba7ec23de80>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7ba7ec241f40>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7ba7ec241f40>}).
I0421 06:22:59.639258 136050425059136 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0421 06:22:59.639328 136050425059136 async_checkpointer.py:192] [process=4][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7ba7c43a9620> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0421 06:23:01.210527 136050425059136 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_main_20260421_061359/linen_xpk_main_20260421_061359_03_dropout/checkpoints
I0421 06:23:02.092513 136050425059136 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_main_20260421_061359/linen_xpk_main_20260421_061359_03_dropout/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7ba7ec23f2c0>
I0421 06:23:02.092728 136050425059136 checkpointing.py:301] Checkpoint manager created!
I0421 06:23:02.440287 136050425059136 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0421 06:23:02.440411 136050425059136 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None).
I0421 06:23:02.824171 136050425059136 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0421 06:23:02.824267 136050425059136 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None).
I0421 06:23:02.840464 136050425059136 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0421 06:23:02.840526 136050425059136 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None).
I0421 06:23:02.864068 136050425059136 attentions.py:1154] attentions/query Logical: bfloat16[32,128,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0421 06:23:02.864137 136050425059136 attentions.py:1154] attentions/query Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None).
I0421 06:23:02.880424 136050425059136 attentions.py:1155] attentions/key Logical: bfloat16[32,128,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0421 06:23:02.880487 136050425059136 attentions.py:1155] attentions/key Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None).
I0421 06:23:02.896745 136050425059136 attentions.py:1156] attentions/value Logical: bfloat16[32,128,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0421 06:23:02.896803 136050425059136 attentions.py:1156] attentions/value Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None).
I0421 06:23:02.921187 136050425059136 attentions.py:1198] attentions/out Logical: bfloat16[32,128,16,128]..................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0421 06:23:02.921257 136050425059136 attentions.py:1198] attentions/out Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None).
I0421 06:23:02.947142 136050425059136 linears.py:525] linears/x Logical: bfloat16[32,128,7168]....................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0421 06:23:02.947212 136050425059136 linears.py:525] linears/x Physical: bfloat16[32,128,7168]....................................... ('fsdp', None, None).
I0421 06:23:03.167551 136050425059136 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint
I0421 06:23:03.167749 136050425059136 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0421 06:23:04.612330 136050425059136 maxtext_utils.py:1668]  params/params/decoder/decoder_norm/scale
    Shape:     float32[2048]
    Logical:   P('norm',)
    Physical:  (None,)
I0421 06:23:04.612501 136050425059136 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)
I0421 06:23:04.612567 136050425059136 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)
I0421 06:23:04.612628 136050425059136 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')
I0421 06:23:04.612737 136050425059136 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)
I0421 06:23:04.612804 136050425059136 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)
I0421 06:23:04.612882 136050425059136 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)
I0421 06:23:04.612964 136050425059136 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')
I0421 06:23:04.613022 136050425059136 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)
I0421 06:23:04.613059 136050425059136 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)
I0421 06:23:04.613128 136050425059136 maxtext_utils.py:1668]  params/params/decoder/logits_dense/kernel
    Shape:     float32[2048,32000]
    Logical:   P('embed_vocab', 'vocab')
    Physical:  ('fsdp', None)
I0421 06:23:04.613204 136050425059136 maxtext_utils.py:1668]  params/params/token_embedder/embedding
    Shape:     float32[32000,2048]
    Logical:   P('vocab', 'embed_vocab')

    Physical:  (None, 'fsdp')
I0421 06:23:05.132184 136050425059136 train.py:155] train/xent Logical: float32[32,128]............................................. ('activation_embed_and_logits_batch', 'activation_length').
I0421 06:23:05.132280 136050425059136 train.py:155] train/xent Physical: float32[32,128]............................................. ('fsdp', None).
I0421 06:23:05.148526 136050425059136 train.py:162] train/z_loss Logical: float32[32,128]............................................. ('activation_embed_and_logits_batch', 'activation_length').
I0421 06:23:05.148589 136050425059136 train.py:162] train/z_loss Physical: float32[32,128]............................................. ('fsdp', None).
I0421 06:23:08.687769 136050425059136 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.
I0421 06:23:08.688593 136050425059136 metric_logger.py:301] number parameters: 1.104 billion
I0421 06:23:13.352722 136050425059136 checkpointing.py:772] Waiting for step 0 to finish before checkpoint...
I0421 06:23:13.427585 136050425059136 checkpointing.py:776] Waited 0.07484960556030273 seconds for step 0 to finish before starting checkpointing.
I0421 06:23:13.430062 136050425059136 checkpoint_manager.py:2009] [process=4][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0421 06:23:13.432240 136050425059136 checkpoint_manager.py:1512] [process=4] Saving checkpoint at step 0
I0421 06:23:13.433752 136050425059136 event_tracking.py:70] [process=4] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260421_061359/linen_xpk_main_20260421_061359_03_dropout/checkpoints/0.
I0421 06:23:14.147334 136050425059136 signaling_client.py:364] Using JaxDistributedSignalingClient
I0421 06:23:14.148313 136050425059136 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0421 06:23:14.148370 136050425059136 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
I0421 06:23:14.426137 136050425059136 base_pytree_checkpoint_handler.py:154] [process=4][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.278969s
I0421 06:23:14.426325 136050425059136 base_pytree_checkpoint_handler.py:130] [process=4] /jax/orbax/write/blocking_gbytes_per_sec: 5.416 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2848024368286133 s) (per-host)
I0421 06:23:14.426380 136050425059136 base_pytree_checkpoint_handler.py:768] [process=4][thread=MainThread] Initiated Pytree async_save. Time taken: 0.284868s (batch_requests_ready=0.002506s, total_serialization_initiated=0.282288s, others=0.000074s)
I0421 06:23:14.426478 136050425059136 composite_checkpoint_handler.py:715] [process=4][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.289014s (all_items=0.000017s, per_item={'items': '0.00001717'}, temp_paths=0.288997)
I0421 06:23:14.427355 136050425059136 event_tracking.py:125] [process=4] [async] Finished blocking save in 1.00 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260421_061359/linen_xpk_main_20260421_061359_03_dropout/checkpoints/0.
I0421 06:23:14.427673 135922482247424 async_checkpointer.py:76] [process=4][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-21 06:43:14.427619
I0421 06:23:14.863090 136050425059136 checkpoint_manager.py:1560] [process=4][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0421 06:23:14.863465 135920306173696 async_checkpointer.py:280] [process=4][thread=save_finalize] Waiting for background save thread=async_save.
I0421 06:23:14.863661 136050425059136 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260421_061359/linen_xpk_main_20260421_061359_03_dropout/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776752593.4300437, 'wait_for_prev_duration_secs': 6.413459777832031e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776752593.432286, 'checkpointer_blocking_duration_secs': 0.9955379962921143, 'get_old_steps_start_time': 1776752594.4278505, 'get_old_steps_duration_secs': 3.0040740966796875e-05, 'checkpoint_manager_blocking_start_time': 1776752593.4281285, 'checkpoint_manager_blocking_duration_secs': 1.4354736804962158}
I0421 06:23:14.863772 136050425059136 checkpointing.py:408] Started an asynchronous checkpoint save for step 0
I0421 06:23:14.863822 136050425059136 max_utils.py:750] 
Memstats: After params initialized:
I0421 06:23:14.863878 136050425059136 max_utils.py:756] 	Using (GB) 0.41 / 31.25 (1.312000%) on TPU_16(process=4,(0,4,0,0))
I0421 06:23:14.863911 136050425059136 max_utils.py:756] 	Using (GB) 0.41 / 31.25 (1.312000%) on TPU_17(process=4,(1,4,0,0))
I0421 06:23:14.863938 136050425059136 max_utils.py:756] 	Using (GB) 0.41 / 31.25 (1.312000%) on TPU_20(process=4,(0,5,0,0))
I0421 06:23:14.863964 136050425059136 max_utils.py:756] 	Using (GB) 0.41 / 31.25 (1.312000%) on TPU_21(process=4,(1,5,0,0))
I0421 06:23:15.179313 136050425059136 metric_logger.py:196] completed step: 0, seconds: 4.664, TFLOP/s/device: 0.172, Tokens/s/device: 27.444, total_weights: 4096, loss: 10.889, lm_loss: 10.889, perplexity: 53560.699
I0421 06:23:15.267950 136050425059136 metric_logger.py:196] completed step: 1, seconds: 1.825, TFLOP/s/device: 0.439, Tokens/s/device: 70.135, total_weights: 4096, loss: 10.902, lm_loss: 10.902, perplexity: 54298.523
I0421 06:23:15.692955 136050425059136 metric_logger.py:196] completed step: 2, seconds: 0.018, TFLOP/s/device: 43.675, Tokens/s/device: 6980.422, total_weights: 4096, loss: 9.956, lm_loss: 9.956, perplexity: 21082.051
I0421 06:23:15.763756 136050425059136 metric_logger.py:196] completed step: 3, seconds: 0.425, TFLOP/s/device: 1.883, Tokens/s/device: 300.908, total_weights: 4096, loss: 9.139, lm_loss: 9.139, perplexity: 9314.691
I0421 06:23:15.905733 136050425059136 metric_logger.py:196] completed step: 4, seconds: 0.076, TFLOP/s/device: 10.547, Tokens/s/device: 1685.697, total_weights: 4096, loss: 8.459, lm_loss: 8.459, perplexity: 4715.493
I0421 06:23:15.911915 136050425059136 metric_logger.py:196] completed step: 5, seconds: 0.071, TFLOP/s/device: 11.334, Tokens/s/device: 1811.492, total_weights: 4096, loss: 7.924, lm_loss: 7.924, perplexity: 2762.373
I0421 06:23:23.069604    2813 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0421 06:23:26.142939 136050425059136 metric_logger.py:196] completed step: 6, seconds: 0.143, TFLOP/s/device: 5.610, Tokens/s/device: 896.616, total_weights: 4096, loss: 7.553, lm_loss: 7.553, perplexity: 1906.617
I0421 06:23:26.213678 136050425059136 metric_logger.py:196] completed step: 7, seconds: 10.161, TFLOP/s/device: 0.079, Tokens/s/device: 12.597, total_weights: 4096, loss: 7.267, lm_loss: 7.267, perplexity: 1431.653
I0421 06:23:26.284367 136050425059136 metric_logger.py:196] completed step: 8, seconds: 0.075, TFLOP/s/device: 10.621, Tokens/s/device: 1697.455, total_weights: 4096, loss: 7.111, lm_loss: 7.111, perplexity: 1225.983
I0421 06:23:26.354341 136050425059136 checkpointing.py:772] Waiting for step 9 to finish before checkpoint...
I0421 06:23:26.355007 136050425059136 checkpointing.py:776] Waited 0.0006799697875976562 seconds for step 9 to finish before starting checkpointing.
I0421 06:23:26.357083 136050425059136 checkpoint_manager.py:2020] [process=4][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0421 06:23:26.468589 135920314566400 array_metadata_store.py:203] [process=4][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260421_061359/linen_xpk_main_20260421_061359_03_dropout/checkpoints/0/items/array_metadatas/process_4
I0421 06:23:51.685559 135922482247424 base_pytree_checkpoint_handler.py:130] [process=4] /jax/orbax/write/gbytes_per_sec: 42.073 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 37.54400444030762 s) (per-host)
I0421 06:23:51.685678 135922482247424 async_checkpointer.py:90] [process=4][thread=async_save] 3 Handler Commit operations completed. Time taken: 37.257893s.
I0421 06:24:00.481624 135922482247424 async_checkpointer.py:160] [process=4][thread=async_save] Background save thread done. Time taken: 46.053821s.
I0421 06:24:00.481868 135920306173696 async_checkpointer.py:288] [process=4][thread=save_finalize] Done with waiting for background save thread=async_save.
I0421 06:24:00.481954 135920306173696 async_checkpointer.py:298] [process=4][thread=save_finalize] No errors found in background save thread=async_save.
I0421 06:24:00.482035 135920306173696 checkpoint_manager.py:2137] [process=4][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0421 06:24:00.484499 135920306173696 checkpoint_manager.py:2146] [process=4][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0421 06:24:00.484686 136050425059136 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.
W0421 06:24:00.484853 136050425059136 checkpoint_manager.py:1452] Waiting for previous save to complete took 34.127769 seconds. If this number is high, consider checkpointing less frequently.
I0421 06:24:00.486832 136050425059136 checkpoint_manager.py:1512] [process=4] Saving checkpoint at step 9
I0421 06:24:00.488892 136050425059136 event_tracking.py:70] [process=4] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260421_061359/linen_xpk_main_20260421_061359_03_dropout/checkpoints/9.
I0421 06:24:00.788025 136050425059136 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0421 06:24:00.788115 136050425059136 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
I0421 06:24:00.821628 136050425059136 base_pytree_checkpoint_handler.py:154] [process=4][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.034689s
I0421 06:24:00.821788 136050425059136 base_pytree_checkpoint_handler.py:130] [process=4] /jax/orbax/write/blocking_gbytes_per_sec: 40.264 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.03831148147583008 s) (per-host)
I0421 06:24:00.821836 136050425059136 base_pytree_checkpoint_handler.py:768] [process=4][thread=MainThread] Initiated Pytree async_save. Time taken: 0.038368s (batch_requests_ready=0.001917s, total_serialization_initiated=0.036387s, others=0.000065s)
I0421 06:24:00.821924 136050425059136 composite_checkpoint_handler.py:715] [process=4][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.042346s (all_items=0.000015s, per_item={'items': '0.00001478'}, temp_paths=0.042331)
I0421 06:24:00.822629 136050425059136 event_tracking.py:125] [process=4] [async] Finished blocking save in 0.34 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260421_061359/linen_xpk_main_20260421_061359_03_dropout/checkpoints/9.
I0421 06:24:00.822945 135920306173696 async_checkpointer.py:76] [process=4][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-21 06:44:00.822910
I0421 06:24:00.829754 136050425059136 checkpoint_manager.py:1560] [process=4][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0421 06:24:00.830080 135921924015872 async_checkpointer.py:280] [process=4][thread=save_finalize] Waiting for background save thread=async_save.
I0421 06:24:00.830267 136050425059136 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260421_061359/linen_xpk_main_20260421_061359_03_dropout/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776752606.3570538, 'wait_for_prev_duration_secs': 34.12776851654053, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776752640.4868712, 'checkpointer_blocking_duration_secs': 0.3362140655517578, 'get_old_steps_start_time': 1776752640.8231087, 'get_old_steps_duration_secs': 3.0040740966796875e-05, 'checkpoint_manager_blocking_start_time': 1776752606.3552275, 'checkpoint_manager_blocking_duration_secs': 34.47500538825989}
I0421 06:24:00.830384 136050425059136 checkpointing.py:408] Started an asynchronous checkpoint save for step 9
I0421 06:24:00.830430 136050425059136 checkpoint_manager.py:2020] [process=4][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0421 06:24:08.976790 135921932408576 array_metadata_store.py:203] [process=4][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260421_061359/linen_xpk_main_20260421_061359_03_dropout/checkpoints/9/items/array_metadatas/process_4
I0421 06:24:42.643164 135920306173696 base_pytree_checkpoint_handler.py:130] [process=4] /jax/orbax/write/gbytes_per_sec: 37.736 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.85964322090149 s) (per-host)
I0421 06:24:42.643286 135920306173696 async_checkpointer.py:90] [process=4][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.820227s.
I0421 06:24:54.245008 135920306173696 async_checkpointer.py:160] [process=4][thread=async_save] Background save thread done. Time taken: 53.421936s.
I0421 06:24:54.245280 135921924015872 async_checkpointer.py:288] [process=4][thread=save_finalize] Done with waiting for background save thread=async_save.
I0421 06:24:54.245394 135921924015872 async_checkpointer.py:298] [process=4][thread=save_finalize] No errors found in background save thread=async_save.
I0421 06:24:54.245444 135921924015872 checkpoint_manager.py:2137] [process=4][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0421 06:24:54.247873 135921924015872 checkpoint_manager.py:2146] [process=4][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0421 06:24:54.248069 136050425059136 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.
I0421 06:24:54.248216 136050425059136 checkpoint_manager.py:2009] [process=4][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0421 06:24:54.249212 136050425059136 metric_logger.py:196] completed step: 9, seconds: 0.071, TFLOP/s/device: 11.348, Tokens/s/device: 1813.622, 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: Tue Apr 21 06:25:05 UTC 2026
EXIT_CODE=0