XPK Start: Tue Apr 21 16:03:54 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 16:04:19.686783: 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 16:04:19.898876 132280200259392 max_utils.py:273] Attempting to initialize the jax distributed system...
I0421 16:04:28.941800 132280200259392 distributed.py:149] Starting JAX distributed service on [::]:8482
I0421 16:04:28.944425 132280200259392 distributed.py:172] Connecting to JAX distributed service on mt-16-zarr3-true-rs-lb5ct-slice-job-0-0.mt-16-zarr3-true-rs-lb5ct:8482
I0421 16:04:30.281086 132280200259392 max_utils.py:284] Jax distributed system initialized!
I0421 16:04:37.050399 132280200259392 max_utils.py:800] System Information: Jax Version: 0.9.2
I0421 16:04:37.050501 132280200259392 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0421 16:04:37.050542 132280200259392 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 16:04:37.050577 132280200259392 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0421 16:04:37.741788 132280200259392 maxtext_utils.py:1565] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0421 16:04:37.742076 132280200259392 checkpointing.py:677] Setting up checkpoint logger...
I0421 16:04:37.742131 132280200259392 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True
I0421 16:04:37.742176 132280200259392 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0421 16:04:37.742512 132280200259392 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 0x784e4df14e90>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0421 16:04:39.179674 132280200259392 checkpointing.py:265] Enabling policy for fixed interval checkpointing.
I0421 16:04:39.179934 132280200259392 checkpoint_manager.py:708] [process=7][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x783a243a8e90>}, handler_registry=None
I0421 16:04:39.180171 132280200259392 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x783a243a8e90>` 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 16:04:39.180220 132280200259392 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x783a243ad460>` 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 16:04:39.180255 132280200259392 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 0x783a243a8e90>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x783a243a8e90>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x783a243ad460>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x783a243ad460>}).
I0421 16:04:39.180584 132280200259392 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0421 16:04:39.180654 132280200259392 async_checkpointer.py:192] [process=7][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x783a2412d800> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0421 16:04:40.998364 132159851435776 checkpoint.py:228] Read Metadata={'item_handlers': {'items': 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler'}, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776787312929799518, 'commit_timestamp_nsecs': 1776787360513817809, 'custom_metadata': {}} from gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_true/checkpoints/9/_CHECKPOINT_METADATA
I0421 16:04:41.253904 132159851435776 checkpoint_manager.py:1871] Missing metrics for step 9
I0421 16:04:41.535809 132280200259392 checkpoint_manager.py:1812] Found 3 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_true/checkpoints
I0421 16:04:41.802531 132280200259392 checkpoint_manager.py:929] [process=7][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=5), 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_144122/linen_xpk_main_20260421_144122_16_zarr3_true/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x783a243aac00>
I0421 16:04:41.802709 132280200259392 checkpointing.py:301] Checkpoint manager created!
I0421 16:04:42.742655 132280200259392 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0421 16:04:42.742808 132280200259392 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0421 16:04:43.125941 132280200259392 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0421 16:04:43.126036 132280200259392 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0421 16:04:43.143504 132280200259392 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0421 16:04:43.143568 132280200259392 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0421 16:04:43.168134 132280200259392 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0421 16:04:43.168203 132280200259392 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0421 16:04:43.184819 132280200259392 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0421 16:04:43.184882 132280200259392 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0421 16:04:43.201334 132280200259392 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0421 16:04:43.201395 132280200259392 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0421 16:04:43.226985 132280200259392 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0421 16:04:43.227080 132280200259392 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0421 16:04:43.255168 132280200259392 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0421 16:04:43.255243 132280200259392 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0421 16:04:43.465750 132280200259392 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint
I0421 16:04:43.465864 132280200259392 checkpointing.py:581] restoring from this run's directory step 9
I0421 16:04:43.709376 132280200259392 event_tracking.py:70] [process=7] [sync] Started load checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_true/checkpoints/9.
I0421 16:04:43.956000 132280200259392 checkpointer.py:307] Restoring checkpoint from gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_true/checkpoints/9.
I0421 16:04:43.956440 132280200259392 event_tracking.py:125] [process=7] [sync] Finished blocking load in 0.25 seconds. Continuing load @ gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_true/checkpoints/9.
I0421 16:04:45.784998 1450 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0421 16:04:52.112504 132280200259392 jax_array_handlers.py:843] [process=7] /jax/orbax/read/worker/io/requested throughput: 249.517 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 6.333317756652832 s) (per-host)
I0421 16:04:52.117393 132280200259392 base_pytree_checkpoint_handler.py:130] [process=7] /jax/checkpoint/read/gbytes_per_sec: 234.515 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 6.748370409011841 s) (per-host)
I0421 16:04:53.562305 132280200259392 event_tracking.py:138] [process=7] [sync] Finished load in 9.85 seconds @ gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_true/checkpoints/9
I0421 16:04:53.562463 132280200259392 standard_logger.py:34] {'step': 9, 'event_type': 'restore', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_true/checkpoints', 'checkpointer_start_time': 1776787483.7092764, 'checkpointer_duration_secs': 9.853156805038452, 'checkpoint_manager_start_time': 1776787483.4661057, 'checkpoint_manager_duration_secs': 10.096330404281616}
fsdp: 32
I0421 16:04:53.983815 132280200259392 maxtext_utils.py:1668] params/params/decoder/decoder_norm/scale
Shape: float32[2048]
Logical: P('norm',)
Physical: (None,)
I0421 16:04:53.983947 132280200259392 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 16:04:53.984000 132280200259392 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 16:04:53.984064 132280200259392 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 16:04:53.984117 132280200259392 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 16:04:53.984156 132280200259392 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 16:04:53.984207 132280200259392 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 16:04:53.984260 132280200259392 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 16:04:53.984300 132280200259392 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 16:04:53.984337 132280200259392 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 16:04:53.984383 132280200259392 maxtext_utils.py:1668] params/params/decoder/logits_dense/kernel
Shape: float32[2048,32000]
Logical: P('embed_vocab', 'vocab')
Physical: ('fsdp', None)
I0421 16:04:53.984430 132280200259392 maxtext_utils.py:1668] params/params/token_embedder/embedding
Shape: float32[32000,2048]
Logical: P('vocab', 'embed_vocab')
Physical: (None, 'fsdp')
I0421 16:04:54.472117 132280200259392 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0421 16:04:54.472212 132280200259392 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0421 16:04:54.487853 132280200259392 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0421 16:04:54.487912 132280200259392 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0421 16:05:05.435206 132280200259392 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.
I0421 16:05:05.436010 132280200259392 metric_logger.py:301] number parameters: 1.104 billion
I0421 16:05:17.079981 132280200259392 checkpointing.py:772] Waiting for step 10 to finish before checkpoint...
I0421 16:05:17.234146 132280200259392 checkpointing.py:776] Waited 0.1541454792022705 seconds for step 10 to finish before starting checkpointing.
I0421 16:05:17.236914 132280200259392 checkpoint_manager.py:2009] [process=7][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0421 16:05:17.238817 132280200259392 checkpoint_manager.py:1512] [process=7] Saving checkpoint at step 10
I0421 16:05:17.240369 132280200259392 event_tracking.py:70] [process=7] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_true/checkpoints/10.
I0421 16:05:17.572498 132280200259392 signaling_client.py:364] Using JaxDistributedSignalingClient
I0421 16:05:17.573426 132280200259392 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0421 16:05:17.573481 132280200259392 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 16:05:17.850594 132280200259392 base_pytree_checkpoint_handler.py:154] [process=7][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.278177s
I0421 16:05:17.850777 132280200259392 base_pytree_checkpoint_handler.py:130] [process=7] /jax/orbax/write/blocking_gbytes_per_sec: 5.466 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.28220200538635254 s) (per-host)
I0421 16:05:17.850841 132280200259392 base_pytree_checkpoint_handler.py:768] [process=7][thread=MainThread] Initiated Pytree async_save. Time taken: 0.282273s (batch_requests_ready=0.002197s, total_serialization_initiated=0.279981s, others=0.000095s)
I0421 16:05:17.850932 132280200259392 composite_checkpoint_handler.py:715] [process=7][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.286376s (all_items=0.000018s, per_item={'items': '0.00001812'}, temp_paths=0.286358)
I0421 16:05:17.851610 132280200259392 event_tracking.py:125] [process=7] [async] Finished blocking save in 0.61 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_true/checkpoints/10.
I0421 16:05:17.851961 132159272634112 async_checkpointer.py:76] [process=7][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-21 16:25:17.851922
I0421 16:05:17.856745 132280200259392 checkpoint_manager.py:1560] [process=7][thread=MainThread][step=10] Starting CheckpointManager Save Finalize thread=save_finalize
I0421 16:05:17.857057 132155500766976 async_checkpointer.py:280] [process=7][thread=save_finalize] Waiting for background save thread=async_save.
I0421 16:05:17.857212 132280200259392 standard_logger.py:34] {'step': 10, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776787517.2368958, 'wait_for_prev_duration_secs': 6.079673767089844e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776787517.238855, 'checkpointer_blocking_duration_secs': 0.6132650375366211, 'get_old_steps_start_time': 1776787517.8521445, 'get_old_steps_duration_secs': 3.1948089599609375e-05, 'checkpoint_manager_blocking_start_time': 1776787517.2346482, 'checkpoint_manager_blocking_duration_secs': 0.6225268840789795}
I0421 16:05:17.857321 132280200259392 checkpointing.py:408] Started an asynchronous checkpoint save for step 10
I0421 16:05:17.857373 132280200259392 max_utils.py:750]
Memstats: After params initialized:
I0421 16:05:17.857422 132280200259392 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_26(process=7,(2,6,0,0))
I0421 16:05:17.857455 132280200259392 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_27(process=7,(3,6,0,0))
I0421 16:05:17.857481 132280200259392 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_30(process=7,(2,7,0,0))
I0421 16:05:17.857506 132280200259392 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_31(process=7,(3,7,0,0))
I0421 16:05:18.173483 132280200259392 metric_logger.py:196] completed step: 10, seconds: 11.644, TFLOP/s/device: 1.167, Tokens/s/device: 175.887, total_weights: 65536, loss: 6.833, lm_loss: 6.833, perplexity: 927.869
I0421 16:05:18.338356 132280200259392 metric_logger.py:196] completed step: 11, seconds: 1.092, TFLOP/s/device: 12.442, Tokens/s/device: 1875.465, total_weights: 65536, loss: 6.527, lm_loss: 6.527, perplexity: 683.659
I0421 16:05:18.485940 132280200259392 metric_logger.py:196] completed step: 12, seconds: 0.018, TFLOP/s/device: 767.765, Tokens/s/device: 115725.829, total_weights: 65536, loss: 6.265, lm_loss: 6.265, perplexity: 526.068
I0421 16:05:18.633123 132280200259392 metric_logger.py:196] completed step: 13, seconds: 0.153, TFLOP/s/device: 88.810, Tokens/s/device: 13386.408, total_weights: 65536, loss: 6.045, lm_loss: 6.045, perplexity: 422.001
I0421 16:05:18.637270 132280200259392 checkpointing.py:772] Waiting for step 15 to finish before checkpoint...
I0421 16:05:18.927077 132280200259392 checkpointing.py:776] Waited 0.28977036476135254 seconds for step 15 to finish before starting checkpointing.
I0421 16:05:18.930157 132280200259392 checkpoint_manager.py:2020] [process=7][thread=MainThread][step=10][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0421 16:05:22.905695 132155509159680 array_metadata_store.py:203] [process=7][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_true/checkpoints/10/items/array_metadatas/process_7
I0421 16:05:59.547184 132159272634112 base_pytree_checkpoint_handler.py:130] [process=7] /jax/orbax/write/gbytes_per_sec: 37.629 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.978574991226196 s) (per-host)
I0421 16:05:59.547308 132159272634112 async_checkpointer.py:90] [process=7][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.695232s.
I0421 16:06:07.422510 132159272634112 async_checkpointer.py:160] [process=7][thread=async_save] Background save thread done. Time taken: 49.570419s.
I0421 16:06:07.422831 132155500766976 async_checkpointer.py:288] [process=7][thread=save_finalize] Done with waiting for background save thread=async_save.
I0421 16:06:07.422955 132155500766976 async_checkpointer.py:298] [process=7][thread=save_finalize] No errors found in background save thread=async_save.
I0421 16:06:07.423003 132155500766976 checkpoint_manager.py:2137] [process=7][thread=save_finalize][step=10] CheckpointManager Save Finalize is syncing with other hosts...
I0421 16:06:07.424542 132155500766976 checkpoint_manager.py:2146] [process=7][thread=save_finalize][step=10] CheckpointManager Save Finalize is done on all hosts.
I0421 16:06:07.424750 132280200259392 checkpoint_manager.py:2032] [process=7][thread=MainThread][step=10][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=10.
W0421 16:06:07.424886 132280200259392 checkpoint_manager.py:1452] Waiting for previous save to complete took 48.494729 seconds. If this number is high, consider checkpointing less frequently.
I0421 16:06:07.426861 132280200259392 checkpoint_manager.py:1512] [process=7] Saving checkpoint at step 15
I0421 16:06:07.429203 132280200259392 event_tracking.py:70] [process=7] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_true/checkpoints/15.
I0421 16:06:07.722325 132280200259392 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0421 16:06:07.722420 132280200259392 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 16:06:07.748325 132280200259392 base_pytree_checkpoint_handler.py:154] [process=7][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.027866s
I0421 16:06:07.748498 132280200259392 base_pytree_checkpoint_handler.py:130] [process=7] /jax/orbax/write/blocking_gbytes_per_sec: 49.259 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.03131556510925293 s) (per-host)
I0421 16:06:07.748551 132280200259392 base_pytree_checkpoint_handler.py:768] [process=7][thread=MainThread] Initiated Pytree async_save. Time taken: 0.031379s (batch_requests_ready=0.001774s, total_serialization_initiated=0.029534s, others=0.000071s)
I0421 16:06:07.748648 132280200259392 composite_checkpoint_handler.py:715] [process=7][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.036505s (all_items=0.000012s, per_item={'items': '0.00001216'}, temp_paths=0.036493)
I0421 16:06:07.749438 132280200259392 event_tracking.py:125] [process=7] [async] Finished blocking save in 0.32 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_true/checkpoints/15.
I0421 16:06:07.749788 132155500766976 async_checkpointer.py:76] [process=7][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-21 16:26:07.749750
I0421 16:06:07.761095 132280200259392 checkpoint_manager.py:1560] [process=7][thread=MainThread][step=15] Starting CheckpointManager Save Finalize thread=save_finalize
I0421 16:06:07.761394 132155509159680 async_checkpointer.py:280] [process=7][thread=save_finalize] Waiting for background save thread=async_save.
I0421 16:06:07.761555 132280200259392 standard_logger.py:34] {'step': 15, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776787518.9301271, 'wait_for_prev_duration_secs': 48.494728565216064, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776787567.4268985, 'checkpointer_blocking_duration_secs': 0.323030948638916, 'get_old_steps_start_time': 1776787567.7499535, 'get_old_steps_duration_secs': 3.218650817871094e-05, 'checkpoint_manager_blocking_start_time': 1776787518.927645, 'checkpoint_manager_blocking_duration_secs': 48.83387565612793}
I0421 16:06:07.761666 132280200259392 checkpointing.py:408] Started an asynchronous checkpoint save for step 15
I0421 16:06:07.762454 132280200259392 metric_logger.py:196] completed step: 14, seconds: 0.147, TFLOP/s/device: 92.129, Tokens/s/device: 13886.723, total_weights: 65536, loss: 5.864, lm_loss: 5.864, perplexity: 352.193
I0421 16:06:07.768710 132280200259392 metric_logger.py:196] completed step: 15, seconds: 0.147, TFLOP/s/device: 92.401, Tokens/s/device: 13927.709, total_weights: 65536, loss: 5.719, lm_loss: 5.719, perplexity: 304.661
I0421 16:06:12.950017 132152821790464 array_metadata_store.py:203] [process=7][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_true/checkpoints/15/items/array_metadatas/process_7
I0421 16:06:28.671582 132280200259392 metric_logger.py:196] completed step: 16, seconds: 49.130, TFLOP/s/device: 0.277, Tokens/s/device: 41.685, total_weights: 65536, loss: 5.605, lm_loss: 5.605, perplexity: 271.872
I0421 16:06:28.819069 132280200259392 metric_logger.py:196] completed step: 17, seconds: 20.757, TFLOP/s/device: 0.655, Tokens/s/device: 98.666, total_weights: 65536, loss: 5.517, lm_loss: 5.517, perplexity: 248.975
I0421 16:06:28.966251 132280200259392 metric_logger.py:196] completed step: 18, seconds: 0.152, TFLOP/s/device: 89.228, Tokens/s/device: 13449.440, total_weights: 65536, loss: 5.448, lm_loss: 5.448, perplexity: 232.333
I0421 16:06:29.112951 132280200259392 checkpointing.py:772] Waiting for step 19 to finish before checkpoint...
I0421 16:06:29.113670 132280200259392 checkpointing.py:776] Waited 0.0007390975952148438 seconds for step 19 to finish before starting checkpointing.
I0421 16:06:29.115742 132280200259392 checkpoint_manager.py:2020] [process=7][thread=MainThread][step=15][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0421 16:06:50.080769 132155500766976 base_pytree_checkpoint_handler.py:130] [process=7] /jax/orbax/write/gbytes_per_sec: 37.287 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.3635311126709 s) (per-host)
I0421 16:06:50.080893 132155500766976 async_checkpointer.py:90] [process=7][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.330993s.
I0421 16:06:57.787416 132155500766976 async_checkpointer.py:160] [process=7][thread=async_save] Background save thread done. Time taken: 50.037502s.
I0421 16:06:57.787687 132155509159680 async_checkpointer.py:288] [process=7][thread=save_finalize] Done with waiting for background save thread=async_save.
I0421 16:06:57.787840 132155509159680 async_checkpointer.py:298] [process=7][thread=save_finalize] No errors found in background save thread=async_save.
I0421 16:06:57.787889 132155509159680 checkpoint_manager.py:2137] [process=7][thread=save_finalize][step=15] CheckpointManager Save Finalize is syncing with other hosts...
I0421 16:06:57.789576 132155509159680 checkpoint_manager.py:2146] [process=7][thread=save_finalize][step=15] CheckpointManager Save Finalize is done on all hosts.
I0421 16:06:57.789772 132280200259392 checkpoint_manager.py:2032] [process=7][thread=MainThread][step=15][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=15.
W0421 16:06:57.789904 132280200259392 checkpoint_manager.py:1452] Waiting for previous save to complete took 28.674180 seconds. If this number is high, consider checkpointing less frequently.
I0421 16:06:57.791348 132280200259392 checkpoint_manager.py:1512] [process=7] Saving checkpoint at step 19
I0421 16:06:57.793214 132280200259392 event_tracking.py:70] [process=7] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_true/checkpoints/19.
I0421 16:06:58.087173 132280200259392 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0421 16:06:58.087265 132280200259392 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 16:06:58.113294 132280200259392 base_pytree_checkpoint_handler.py:154] [process=7][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.026972s
I0421 16:06:58.113470 132280200259392 base_pytree_checkpoint_handler.py:130] [process=7] /jax/orbax/write/blocking_gbytes_per_sec: 50.585 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.03049468994140625 s) (per-host)
I0421 16:06:58.113521 132280200259392 base_pytree_checkpoint_handler.py:768] [process=7][thread=MainThread] Initiated Pytree async_save. Time taken: 0.030557s (batch_requests_ready=0.001678s, total_serialization_initiated=0.028812s, others=0.000067s)
I0421 16:06:58.113617 132280200259392 composite_checkpoint_handler.py:715] [process=7][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.034710s (all_items=0.000011s, per_item={'items': '0.00001144'}, temp_paths=0.034699)
I0421 16:06:58.114330 132280200259392 event_tracking.py:125] [process=7] [async] Finished blocking save in 0.32 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_true/checkpoints/19.
I0421 16:06:58.114642 132155509159680 async_checkpointer.py:76] [process=7][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-21 16:26:58.114606
I0421 16:06:58.118164 132280200259392 checkpoint_manager.py:1560] [process=7][thread=MainThread][step=19] Starting CheckpointManager Save Finalize thread=save_finalize
I0421 16:06:58.118443 132152821790464 async_checkpointer.py:280] [process=7][thread=save_finalize] Waiting for background save thread=async_save.
I0421 16:06:58.118636 132280200259392 standard_logger.py:34] {'step': 19, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776787589.1157005, 'wait_for_prev_duration_secs': 28.674179553985596, 'time_between_consecutive_saves_sec': 21.6911199092865, 'checkpointer_blocking_start_time': 1776787617.791387, 'checkpointer_blocking_duration_secs': 0.32341742515563965, 'get_old_steps_start_time': 1776787618.1148214, 'get_old_steps_duration_secs': 2.6226043701171875e-05, 'checkpoint_manager_blocking_start_time': 1776787589.113925, 'checkpoint_manager_blocking_duration_secs': 29.004674911499023}
I0421 16:06:58.118779 132280200259392 checkpointing.py:408] Started an asynchronous checkpoint save for step 19
I0421 16:06:58.118828 132280200259392 checkpoint_manager.py:2020] [process=7][thread=MainThread][step=19][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0421 16:07:04.141139 132152846968576 array_metadata_store.py:203] [process=7][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_true/checkpoints/19/items/array_metadatas/process_7
I0421 16:07:41.177195 132155509159680 base_pytree_checkpoint_handler.py:130] [process=7] /jax/orbax/write/gbytes_per_sec: 36.655 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 43.09418272972107 s) (per-host)
I0421 16:07:41.177320 132155509159680 async_checkpointer.py:90] [process=7][thread=async_save] 3 Handler Commit operations completed. Time taken: 43.062552s.
I0421 16:07:50.307572 132155509159680 async_checkpointer.py:160] [process=7][thread=async_save] Background save thread done. Time taken: 52.192788s.
I0421 16:07:50.307863 132152821790464 async_checkpointer.py:288] [process=7][thread=save_finalize] Done with waiting for background save thread=async_save.
I0421 16:07:50.307999 132152821790464 async_checkpointer.py:298] [process=7][thread=save_finalize] No errors found in background save thread=async_save.
I0421 16:07:50.308042 132152821790464 checkpoint_manager.py:2137] [process=7][thread=save_finalize][step=19] CheckpointManager Save Finalize is syncing with other hosts...
I0421 16:07:50.309724 132152821790464 checkpoint_manager.py:2146] [process=7][thread=save_finalize][step=19] CheckpointManager Save Finalize is done on all hosts.
I0421 16:07:50.309908 132280200259392 checkpoint_manager.py:2032] [process=7][thread=MainThread][step=19][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=19.
I0421 16:07:50.310052 132280200259392 checkpoint_manager.py:2009] [process=7][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0421 16:07:50.310976 132280200259392 metric_logger.py:196] completed step: 19, seconds: 0.147, TFLOP/s/device: 92.278, Tokens/s/device: 13909.169, total_weights: 65536, loss: 5.391, lm_loss: 5.391, perplexity: 219.349
Per train step:
Total TFLOPs: 13.59
split as 93.93% learnable weight flops and 6.07% attention flops
XPK End: Tue Apr 21 16:08:00 UTC 2026
EXIT_CODE=0