XPK Start: Tue Apr 21 06:37:27 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 06:37:52.719457: 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 06:37:52.933783 133541803579200 max_utils.py:273] Attempting to initialize the jax distributed system...
I0421 06:38:01.973698 133541803579200 distributed.py:149] Starting JAX distributed service on [::]:8482
I0421 06:38:01.976006 133541803579200 distributed.py:172] Connecting to JAX distributed service on mt-08-checkpoint-async--ceipf-slice-job-0-0.mt-08-checkpoint-async--ceipf:8482
I0421 06:38:02.737771 133541803579200 max_utils.py:284] Jax distributed system initialized!
I0421 06:38:09.022082 133541803579200 max_utils.py:800] System Information: Jax Version: 0.9.2
I0421 06:38:09.022195 133541803579200 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0421 06:38:09.022252 133541803579200 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 06:38:09.022299 133541803579200 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0421 06:38:09.716091 133541803579200 maxtext_utils.py:1565] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0421 06:38:09.716369 133541803579200 checkpointing.py:677] Setting up checkpoint logger...
I0421 06:38:09.716424 133541803579200 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True
I0421 06:38:09.716469 133541803579200 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0421 06:38:09.716838 133541803579200 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 0x797401d1b4d0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0421 06:38:12.517632 133541803579200 checkpointing.py:265] Enabling policy for fixed interval checkpointing.
I0421 06:38:12.517898 133541803579200 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 0x7960103099d0>}, handler_registry=None
I0421 06:38:12.518193 133541803579200 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7960103099d0>` 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 06:38:12.518265 133541803579200 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x79601030d3a0>` 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 06:38:12.518313 133541803579200 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 0x7960103099d0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7960103099d0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x79601030d3a0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x79601030d3a0>}).
I0421 06:38:12.518749 133541803579200 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0421 06:38:12.518842 133541803579200 async_checkpointer.py:192] [process=4][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x795ef075d300> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0421 06:38:14.298930 133541803579200 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_main_20260421_061359/linen_xpk_main_20260421_061359_08_checkpoint_async_true/checkpoints
I0421 06:38:14.729482 133541803579200 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=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_061359/linen_xpk_main_20260421_061359_08_checkpoint_async_true/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x796010309ca0>
I0421 06:38:14.729674 133541803579200 checkpointing.py:301] Checkpoint manager created!
I0421 06:38:15.653947 133541803579200 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0421 06:38:15.654064 133541803579200 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0421 06:38:16.038676 133541803579200 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0421 06:38:16.038779 133541803579200 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0421 06:38:16.055065 133541803579200 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0421 06:38:16.055123 133541803579200 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0421 06:38:16.078838 133541803579200 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 06:38:16.078914 133541803579200 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0421 06:38:16.095393 133541803579200 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 06:38:16.095453 133541803579200 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0421 06:38:16.111857 133541803579200 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 06:38:16.111916 133541803579200 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0421 06:38:16.136605 133541803579200 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0421 06:38:16.136683 133541803579200 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0421 06:38:16.157942 133541803579200 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0421 06:38:16.158010 133541803579200 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0421 06:38:16.366975 133541803579200 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint
I0421 06:38:16.367080 133541803579200 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0421 06:38:17.802787 133541803579200 maxtext_utils.py:1668] params/params/decoder/decoder_norm/scale
Shape: float32[2048]
Logical: P('norm',)
Physical: (None,)
I0421 06:38:17.802919 133541803579200 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 06:38:17.802973 133541803579200 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 06:38:17.803030 133541803579200 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 06:38:17.803082 133541803579200 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 06:38:17.803121 133541803579200 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 06:38:17.803173 133541803579200 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 06:38:17.803224 133541803579200 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 06:38:17.803264 133541803579200 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 06:38:17.803300 133541803579200 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 06:38:17.803356 133541803579200 maxtext_utils.py:1668] params/params/decoder/logits_dense/kernel
Shape: float32[2048,32000]
Logical: P('embed_vocab', 'vocab')
Physical: ('fsdp', None)
I0421 06:38:17.803404 133541803579200 maxtext_utils.py:1668] params/params/token_embedder/embedding
Shape: float32[32000,2048]
Logical: P('vocab', 'embed_vocab')
Physical: (None, 'fsdp')
I0421 06:38:18.295603 133541803579200 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0421 06:38:18.295708 133541803579200 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0421 06:38:18.310981 133541803579200 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0421 06:38:18.311041 133541803579200 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0421 06:38:29.262429 133541803579200 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 06:38:29.263334 133541803579200 metric_logger.py:301] number parameters: 1.104 billion
I0421 06:38:40.527407 133541803579200 checkpointing.py:772] Waiting for step 0 to finish before checkpoint...
I0421 06:38:41.016237 133541803579200 checkpointing.py:776] Waited 0.48880743980407715 seconds for step 0 to finish before starting checkpointing.
I0421 06:38:41.019101 133541803579200 checkpoint_manager.py:2009] [process=4][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0421 06:38:41.021007 133541803579200 checkpoint_manager.py:1512] [process=4] Saving checkpoint at step 0
I0421 06:38:41.022413 133541803579200 event_tracking.py:70] [process=4] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260421_061359/linen_xpk_main_20260421_061359_08_checkpoint_async_true/checkpoints/0.
I0421 06:38:42.220010 133541803579200 signaling_client.py:364] Using JaxDistributedSignalingClient
I0421 06:38:42.221023 133541803579200 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0421 06:38:42.221080 133541803579200 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 06:38:42.495625 133541803579200 base_pytree_checkpoint_handler.py:154] [process=4][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.275687s
I0421 06:38:42.495815 133541803579200 base_pytree_checkpoint_handler.py:130] [process=4] /jax/orbax/write/blocking_gbytes_per_sec: 5.483 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.28133606910705566 s) (per-host)
I0421 06:38:42.495870 133541803579200 base_pytree_checkpoint_handler.py:768] [process=4][thread=MainThread] Initiated Pytree async_save. Time taken: 0.281402s (batch_requests_ready=0.002447s, total_serialization_initiated=0.278881s, others=0.000074s)
I0421 06:38:42.495965 133541803579200 composite_checkpoint_handler.py:715] [process=4][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.285946s (all_items=0.000017s, per_item={'items': '0.00001669'}, temp_paths=0.285929)
I0421 06:38:42.496784 133541803579200 event_tracking.py:125] [process=4] [async] Finished blocking save in 1.48 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260421_061359/linen_xpk_main_20260421_061359_08_checkpoint_async_true/checkpoints/0.
I0421 06:38:42.497099 133415087650560 async_checkpointer.py:76] [process=4][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-21 06:58:42.497065
I0421 06:38:42.503600 133541803579200 checkpoint_manager.py:1560] [process=4][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0421 06:38:42.503870 133413994485504 async_checkpointer.py:280] [process=4][thread=save_finalize] Waiting for background save thread=async_save.
I0421 06:38:42.504002 133541803579200 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260421_061359/linen_xpk_main_20260421_061359_08_checkpoint_async_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776753521.0190783, 'wait_for_prev_duration_secs': 8.249282836914062e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776753521.0210555, 'checkpointer_blocking_duration_secs': 1.4762225151062012, 'get_old_steps_start_time': 1776753522.4973023, 'get_old_steps_duration_secs': 2.86102294921875e-05, 'checkpoint_manager_blocking_start_time': 1776753521.0168025, 'checkpoint_manager_blocking_duration_secs': 1.4871647357940674}
I0421 06:38:42.504102 133541803579200 checkpointing.py:408] Started an asynchronous checkpoint save for step 0
I0421 06:38:42.504149 133541803579200 max_utils.py:750]
Memstats: After params initialized:
I0421 06:38:42.504194 133541803579200 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_16(process=4,(0,4,0,0))
I0421 06:38:42.504224 133541803579200 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_17(process=4,(1,4,0,0))
I0421 06:38:42.504253 133541803579200 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_20(process=4,(0,5,0,0))
I0421 06:38:42.504278 133541803579200 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_21(process=4,(1,5,0,0))
I0421 06:38:42.813242 133541803579200 metric_logger.py:196] completed step: 0, seconds: 11.264, TFLOP/s/device: 1.206, Tokens/s/device: 181.819, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0421 06:38:42.989591 133541803579200 metric_logger.py:196] completed step: 1, seconds: 2.284, TFLOP/s/device: 5.948, Tokens/s/device: 896.543, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0421 06:38:43.415881 133541803579200 metric_logger.py:196] completed step: 2, seconds: 0.029, TFLOP/s/device: 467.233, Tokens/s/device: 70426.410, total_weights: 65536, loss: 10.560, lm_loss: 10.560, perplexity: 38547.719
I0421 06:38:43.563288 133541803579200 metric_logger.py:196] completed step: 3, seconds: 0.426, TFLOP/s/device: 31.860, Tokens/s/device: 4802.360, total_weights: 65536, loss: 9.980, lm_loss: 9.980, perplexity: 21590.506
I0421 06:38:43.567831 133541803579200 checkpointing.py:772] Waiting for step 5 to finish before checkpoint...
I0421 06:38:43.857468 133541803579200 checkpointing.py:776] Waited 0.28960609436035156 seconds for step 5 to finish before starting checkpointing.
I0421 06:38:43.860495 133541803579200 checkpoint_manager.py:2020] [process=4][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0421 06:38:47.539405 2781 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0421 06:38:49.515968 133414002878208 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_08_checkpoint_async_true/checkpoints/0/items/array_metadatas/process_4
I0421 06:39:21.404662 133415087650560 base_pytree_checkpoint_handler.py:130] [process=4] /jax/orbax/write/gbytes_per_sec: 40.306 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 39.1901421546936 s) (per-host)
I0421 06:39:21.404770 133415087650560 async_checkpointer.py:90] [process=4][thread=async_save] 3 Handler Commit operations completed. Time taken: 38.907561s.
I0421 06:39:30.499777 133415087650560 async_checkpointer.py:160] [process=4][thread=async_save] Background save thread done. Time taken: 48.002549s.
I0421 06:39:30.500014 133413994485504 async_checkpointer.py:288] [process=4][thread=save_finalize] Done with waiting for background save thread=async_save.
I0421 06:39:30.500082 133413994485504 async_checkpointer.py:298] [process=4][thread=save_finalize] No errors found in background save thread=async_save.
I0421 06:39:30.500128 133413994485504 checkpoint_manager.py:2137] [process=4][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0421 06:39:30.502761 133413994485504 checkpoint_manager.py:2146] [process=4][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0421 06:39:30.502949 133541803579200 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 06:39:30.503085 133541803579200 checkpoint_manager.py:1452] Waiting for previous save to complete took 46.642587 seconds. If this number is high, consider checkpointing less frequently.
I0421 06:39:30.505005 133541803579200 checkpoint_manager.py:1512] [process=4] Saving checkpoint at step 5
I0421 06:39:30.507397 133541803579200 event_tracking.py:70] [process=4] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260421_061359/linen_xpk_main_20260421_061359_08_checkpoint_async_true/checkpoints/5.
I0421 06:39:31.244461 133541803579200 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0421 06:39:31.244554 133541803579200 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 06:39:31.288443 133541803579200 base_pytree_checkpoint_handler.py:154] [process=4][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.045101s
I0421 06:39:31.288605 133541803579200 base_pytree_checkpoint_handler.py:130] [process=4] /jax/orbax/write/blocking_gbytes_per_sec: 31.818 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04848194122314453 s) (per-host)
I0421 06:39:31.288671 133541803579200 base_pytree_checkpoint_handler.py:768] [process=4][thread=MainThread] Initiated Pytree async_save. Time taken: 0.048558s (batch_requests_ready=0.001756s, total_serialization_initiated=0.046719s, others=0.000082s)
I0421 06:39:31.288759 133541803579200 composite_checkpoint_handler.py:715] [process=4][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.053559s (all_items=0.000015s, per_item={'items': '0.00001478'}, temp_paths=0.053544)
I0421 06:39:31.289501 133541803579200 event_tracking.py:125] [process=4] [async] Finished blocking save in 0.78 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260421_061359/linen_xpk_main_20260421_061359_08_checkpoint_async_true/checkpoints/5.
I0421 06:39:31.289810 133413994485504 async_checkpointer.py:76] [process=4][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-21 06:59:31.289777
I0421 06:39:31.291791 133541803579200 checkpoint_manager.py:1560] [process=4][thread=MainThread][step=5] Starting CheckpointManager Save Finalize thread=save_finalize
I0421 06:39:31.292070 133414002878208 async_checkpointer.py:280] [process=4][thread=save_finalize] Waiting for background save thread=async_save.
I0421 06:39:31.292255 133541803579200 standard_logger.py:34] {'step': 5, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260421_061359/linen_xpk_main_20260421_061359_08_checkpoint_async_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776753523.8604672, 'wait_for_prev_duration_secs': 46.64258670806885, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776753570.505045, 'checkpointer_blocking_duration_secs': 0.7849099636077881, 'get_old_steps_start_time': 1776753571.2899773, 'get_old_steps_duration_secs': 2.8371810913085938e-05, 'checkpoint_manager_blocking_start_time': 1776753523.8580904, 'checkpoint_manager_blocking_duration_secs': 47.434104919433594}
I0421 06:39:31.292357 133541803579200 checkpointing.py:408] Started an asynchronous checkpoint save for step 5
I0421 06:39:31.293278 133541803579200 metric_logger.py:196] completed step: 4, seconds: 0.153, TFLOP/s/device: 88.751, Tokens/s/device: 13377.489, total_weights: 65536, loss: 9.460, lm_loss: 9.460, perplexity: 12840.355
I0421 06:39:31.299391 133541803579200 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.203, Tokens/s/device: 13897.843, total_weights: 65536, loss: 8.959, lm_loss: 8.959, perplexity: 7776.467
I0421 06:39:37.386369 133388363085568 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_08_checkpoint_async_true/checkpoints/5/items/array_metadatas/process_4
I0421 06:39:55.112850 133541803579200 metric_logger.py:196] completed step: 6, seconds: 47.730, TFLOP/s/device: 0.285, Tokens/s/device: 42.908, total_weights: 65536, loss: 8.469, lm_loss: 8.469, perplexity: 4762.740
I0421 06:39:55.260147 133541803579200 metric_logger.py:196] completed step: 7, seconds: 23.667, TFLOP/s/device: 0.574, Tokens/s/device: 86.533, total_weights: 65536, loss: 8.003, lm_loss: 8.003, perplexity: 2989.151
I0421 06:39:55.407699 133541803579200 metric_logger.py:196] completed step: 8, seconds: 0.152, TFLOP/s/device: 89.273, Tokens/s/device: 13456.156, total_weights: 65536, loss: 7.572, lm_loss: 7.572, perplexity: 1943.098
I0421 06:39:55.554218 133541803579200 checkpointing.py:772] Waiting for step 9 to finish before checkpoint...
I0421 06:39:55.554897 133541803579200 checkpointing.py:776] Waited 0.000698089599609375 seconds for step 9 to finish before starting checkpointing.
I0421 06:39:55.556879 133541803579200 checkpoint_manager.py:2020] [process=4][thread=MainThread][step=5][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0421 06:40:14.062233 133413994485504 base_pytree_checkpoint_handler.py:130] [process=4] /jax/orbax/write/gbytes_per_sec: 36.887 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.82206964492798 s) (per-host)
I0421 06:40:14.062372 133413994485504 async_checkpointer.py:90] [process=4][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.772450s.
I0421 06:40:21.695342 133413994485504 async_checkpointer.py:160] [process=4][thread=async_save] Background save thread done. Time taken: 50.405398s.
I0421 06:40:21.695622 133414002878208 async_checkpointer.py:288] [process=4][thread=save_finalize] Done with waiting for background save thread=async_save.
I0421 06:40:21.695762 133414002878208 async_checkpointer.py:298] [process=4][thread=save_finalize] No errors found in background save thread=async_save.
I0421 06:40:21.695811 133414002878208 checkpoint_manager.py:2137] [process=4][thread=save_finalize][step=5] CheckpointManager Save Finalize is syncing with other hosts...
I0421 06:40:21.697114 133414002878208 checkpoint_manager.py:2146] [process=4][thread=save_finalize][step=5] CheckpointManager Save Finalize is done on all hosts.
I0421 06:40:21.697341 133541803579200 checkpoint_manager.py:2032] [process=4][thread=MainThread][step=5][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=5.
W0421 06:40:21.697465 133541803579200 checkpoint_manager.py:1452] Waiting for previous save to complete took 26.140592 seconds. If this number is high, consider checkpointing less frequently.
I0421 06:40:21.698979 133541803579200 checkpoint_manager.py:1512] [process=4] Saving checkpoint at step 9
I0421 06:40:21.701053 133541803579200 event_tracking.py:70] [process=4] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260421_061359/linen_xpk_main_20260421_061359_08_checkpoint_async_true/checkpoints/9.
I0421 06:40:21.986822 133541803579200 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0421 06:40:21.986914 133541803579200 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 06:40:22.030064 133541803579200 base_pytree_checkpoint_handler.py:154] [process=4][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.044142s
I0421 06:40:22.030216 133541803579200 base_pytree_checkpoint_handler.py:130] [process=4] /jax/orbax/write/blocking_gbytes_per_sec: 32.475 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.047499656677246094 s) (per-host)
I0421 06:40:22.030265 133541803579200 base_pytree_checkpoint_handler.py:768] [process=4][thread=MainThread] Initiated Pytree async_save. Time taken: 0.047559s (batch_requests_ready=0.001597s, total_serialization_initiated=0.045898s, others=0.000065s)
I0421 06:40:22.030348 133541803579200 composite_checkpoint_handler.py:715] [process=4][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.051630s (all_items=0.000013s, per_item={'items': '0.00001311'}, temp_paths=0.051617)
I0421 06:40:22.031046 133541803579200 event_tracking.py:125] [process=4] [async] Finished blocking save in 0.33 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260421_061359/linen_xpk_main_20260421_061359_08_checkpoint_async_true/checkpoints/9.
I0421 06:40:22.031315 133414002878208 async_checkpointer.py:76] [process=4][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-21 07:00:22.031292
I0421 06:40:22.033272 133541803579200 checkpoint_manager.py:1560] [process=4][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0421 06:40:22.033478 133412916537088 async_checkpointer.py:280] [process=4][thread=save_finalize] Waiting for background save thread=async_save.
I0421 06:40:22.033581 133541803579200 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260421_061359/linen_xpk_main_20260421_061359_08_checkpoint_async_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776753595.55685, 'wait_for_prev_duration_secs': 26.140591859817505, 'time_between_consecutive_saves_sec': 25.05404829978943, 'checkpointer_blocking_start_time': 1776753621.6990163, 'checkpointer_blocking_duration_secs': 0.3324015140533447, 'get_old_steps_start_time': 1776753622.0314336, 'get_old_steps_duration_secs': 2.3603439331054688e-05, 'checkpoint_manager_blocking_start_time': 1776753595.555119, 'checkpoint_manager_blocking_duration_secs': 26.47843098640442}
I0421 06:40:22.033701 133541803579200 checkpointing.py:408] Started an asynchronous checkpoint save for step 9
I0421 06:40:22.033746 133541803579200 checkpoint_manager.py:2020] [process=4][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0421 06:40:27.362560 133388363085568 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_08_checkpoint_async_true/checkpoints/9/items/array_metadatas/process_4
I0421 06:41:04.608126 133414002878208 base_pytree_checkpoint_handler.py:130] [process=4] /jax/orbax/write/gbytes_per_sec: 37.058 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.62537121772766 s) (per-host)
I0421 06:41:04.608252 133414002878208 async_checkpointer.py:90] [process=4][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.576857s.
I0421 06:41:12.217007 133414002878208 async_checkpointer.py:160] [process=4][thread=async_save] Background save thread done. Time taken: 50.185596s.
I0421 06:41:12.217239 133412916537088 async_checkpointer.py:288] [process=4][thread=save_finalize] Done with waiting for background save thread=async_save.
I0421 06:41:12.217297 133412916537088 async_checkpointer.py:298] [process=4][thread=save_finalize] No errors found in background save thread=async_save.
I0421 06:41:12.217345 133412916537088 checkpoint_manager.py:2137] [process=4][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0421 06:41:12.219149 133412916537088 checkpoint_manager.py:2146] [process=4][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0421 06:41:12.219303 133541803579200 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 06:41:12.219457 133541803579200 checkpoint_manager.py:2009] [process=4][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0421 06:41:12.220534 133541803579200 metric_logger.py:196] completed step: 9, seconds: 0.147, TFLOP/s/device: 92.363, Tokens/s/device: 13922.028, total_weights: 65536, loss: 7.181, lm_loss: 7.181, perplexity: 1314.495
Per train step:
Total TFLOPs: 13.59
split as 93.93% learnable weight flops and 6.07% attention flops
XPK End: Tue Apr 21 06:41:23 UTC 2026
EXIT_CODE=0