XPK Start: Tue Apr 21 16:09:05 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 16:09:29.905276: 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 16:09:30.115711 134946399188800 max_utils.py:273] Attempting to initialize the jax distributed system...
I0421 16:09:39.161287 134946399188800 distributed.py:149] Starting JAX distributed service on [::]:8482
I0421 16:09:39.163687 134946399188800 distributed.py:172] Connecting to JAX distributed service on mt-16-zarr3-false-sv-gbtk5-slice-job-0-0.mt-16-zarr3-false-sv-gbtk5:8482
I0421 16:09:40.141070 134946399188800 max_utils.py:284] Jax distributed system initialized!
I0421 16:09:46.363440 134946399188800 max_utils.py:800] System Information: Jax Version: 0.9.2
I0421 16:09:46.363543 134946399188800 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0421 16:09:46.363584 134946399188800 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 16:09:46.363618 134946399188800 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0421 16:09:47.057951 134946399188800 maxtext_utils.py:1565] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0421 16:09:47.058240 134946399188800 checkpointing.py:677] Setting up checkpoint logger...
I0421 16:09:47.058298 134946399188800 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=False
I0421 16:09:47.058341 134946399188800 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0421 16:09:47.058672 134946399188800 base_pytree_checkpoint_handler.py:441] Created BasePyTreeCheckpointHandler: use_ocdbt=True, use_zarr3=False, pytree_metadata_options=PyTreeMetadataOptions(support_rich_types=False), array_metadata_store=<orbax.checkpoint._src.metadata.array_metadata_store.Store object at 0x7abaf084f5f0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0421 16:09:49.982099 134946399188800 checkpointing.py:265] Enabling policy for fixed interval checkpointing.
I0421 16:09:49.982325 134946399188800 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 0x7aa68c75d550>}, handler_registry=None
I0421 16:09:49.982558 134946399188800 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7aa68c75d550>` 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 16:09:49.982606 134946399188800 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7aa68c761070>` 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 16:09:49.982642 134946399188800 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 0x7aa68c75d550>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7aa68c75d550>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7aa68c761070>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7aa68c761070>}).
I0421 16:09:49.982976 134946399188800 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0421 16:09:49.983053 134946399188800 async_checkpointer.py:192] [process=7][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7aa594371580> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0421 16:09:51.945462 134946399188800 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_false/checkpoints
I0421 16:09:51.947688 134946399188800 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_false/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7aa68c75c680>
I0421 16:09:51.947817 134946399188800 checkpointing.py:301] Checkpoint manager created!
I0421 16:09:52.872458 134946399188800 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0421 16:09:52.872576 134946399188800 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0421 16:09:53.250325 134946399188800 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0421 16:09:53.250418 134946399188800 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0421 16:09:53.266824 134946399188800 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0421 16:09:53.266885 134946399188800 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0421 16:09:53.290517 134946399188800 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 16:09:53.290587 134946399188800 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0421 16:09:53.307066 134946399188800 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 16:09:53.307126 134946399188800 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0421 16:09:53.323503 134946399188800 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 16:09:53.323565 134946399188800 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0421 16:09:53.348104 134946399188800 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0421 16:09:53.348175 134946399188800 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0421 16:09:53.369197 134946399188800 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0421 16:09:53.369268 134946399188800 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0421 16:09:53.582903 134946399188800 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint
I0421 16:09:53.583013 134946399188800 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0421 16:09:55.022919 134946399188800 maxtext_utils.py:1668] params/params/decoder/decoder_norm/scale
Shape: float32[2048]
Logical: P('norm',)
Physical: (None,)
I0421 16:09:55.023048 134946399188800 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 16:09:55.023108 134946399188800 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 16:09:55.023169 134946399188800 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 16:09:55.023221 134946399188800 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 16:09:55.023259 134946399188800 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 16:09:55.023311 134946399188800 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 16:09:55.023361 134946399188800 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 16:09:55.023400 134946399188800 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 16:09:55.023435 134946399188800 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 16:09:55.023481 134946399188800 maxtext_utils.py:1668] params/params/decoder/logits_dense/kernel
Shape: float32[2048,32000]
Logical: P('embed_vocab', 'vocab')
Physical: ('fsdp', None)
I0421 16:09:55.023527 134946399188800 maxtext_utils.py:1668] params/params/token_embedder/embedding
Shape: float32[32000,2048]
Logical: P('vocab', 'embed_vocab')
Physical: (None, 'fsdp')
I0421 16:09:55.515509 134946399188800 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0421 16:09:55.515606 134946399188800 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0421 16:09:55.536698 134946399188800 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0421 16:09:55.536812 134946399188800 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0421 16:10:06.331809 134946399188800 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 16:10:06.332603 134946399188800 metric_logger.py:301] number parameters: 1.104 billion
I0421 16:10:17.415698 134946399188800 checkpointing.py:772] Waiting for step 0 to finish before checkpoint...
I0421 16:10:18.178593 134946399188800 checkpointing.py:776] Waited 0.7628743648529053 seconds for step 0 to finish before starting checkpointing.
I0421 16:10:18.181296 134946399188800 checkpoint_manager.py:2009] [process=7][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0421 16:10:18.182914 134946399188800 checkpoint_manager.py:1512] [process=7] Saving checkpoint at step 0
I0421 16:10:18.184296 134946399188800 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_false/checkpoints/0.
I0421 16:10:18.534520 134946399188800 signaling_client.py:364] Using JaxDistributedSignalingClient
I0421 16:10:18.535611 134946399188800 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0421 16:10:18.535665 134946399188800 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 16:10:18.810172 134946399188800 base_pytree_checkpoint_handler.py:154] [process=7][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.275723s
I0421 16:10:18.810342 134946399188800 base_pytree_checkpoint_handler.py:130] [process=7] /jax/orbax/write/blocking_gbytes_per_sec: 5.483 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2813596725463867 s) (per-host)
I0421 16:10:18.810397 134946399188800 base_pytree_checkpoint_handler.py:768] [process=7][thread=MainThread] Initiated Pytree async_save. Time taken: 0.281423s (batch_requests_ready=0.002492s, total_serialization_initiated=0.278860s, others=0.000071s)
I0421 16:10:18.810511 134946399188800 composite_checkpoint_handler.py:715] [process=7][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.285573s (all_items=0.000018s, per_item={'items': '0.00001788'}, temp_paths=0.285555)
I0421 16:10:18.811252 134946399188800 event_tracking.py:125] [process=7] [async] Finished blocking save in 0.63 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_false/checkpoints/0.
I0421 16:10:18.811487 134816888502016 async_checkpointer.py:76] [process=7][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-21 16:30:18.811448
I0421 16:10:18.825209 134946399188800 checkpoint_manager.py:1560] [process=7][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0421 16:10:18.825453 134816943044352 async_checkpointer.py:280] [process=7][thread=save_finalize] Waiting for background save thread=async_save.
I0421 16:10:18.825584 134946399188800 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776787818.1812782, 'wait_for_prev_duration_secs': 6.079673767089844e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776787818.182954, 'checkpointer_blocking_duration_secs': 0.6286826133728027, 'get_old_steps_start_time': 1776787818.8116581, 'get_old_steps_duration_secs': 2.7418136596679688e-05, 'checkpoint_manager_blocking_start_time': 1776787818.1791923, 'checkpoint_manager_blocking_duration_secs': 0.6463465690612793}
I0421 16:10:18.825693 134946399188800 checkpointing.py:408] Started an asynchronous checkpoint save for step 0
I0421 16:10:18.825768 134946399188800 max_utils.py:750]
Memstats: After params initialized:
I0421 16:10:18.825827 134946399188800 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_26(process=7,(2,6,0,0))
I0421 16:10:18.825873 134946399188800 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_27(process=7,(3,6,0,0))
I0421 16:10:18.825914 134946399188800 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_30(process=7,(2,7,0,0))
I0421 16:10:18.825953 134946399188800 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_31(process=7,(3,7,0,0))
I0421 16:10:19.138445 134946399188800 metric_logger.py:196] completed step: 0, seconds: 11.083, TFLOP/s/device: 1.226, Tokens/s/device: 184.788, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0421 16:10:19.308382 134946399188800 metric_logger.py:196] completed step: 1, seconds: 1.721, TFLOP/s/device: 7.894, Tokens/s/device: 1189.836, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0421 16:10:19.735872 134946399188800 metric_logger.py:196] completed step: 2, seconds: 0.023, TFLOP/s/device: 599.027, Tokens/s/device: 90291.861, total_weights: 65536, loss: 10.560, lm_loss: 10.560, perplexity: 38547.719
I0421 16:10:19.883328 134946399188800 metric_logger.py:196] completed step: 3, seconds: 0.428, TFLOP/s/device: 31.758, Tokens/s/device: 4786.870, total_weights: 65536, loss: 9.980, lm_loss: 9.980, perplexity: 21590.506
I0421 16:10:19.887904 134946399188800 checkpointing.py:772] Waiting for step 5 to finish before checkpoint...
I0421 16:10:20.177411 134946399188800 checkpointing.py:776] Waited 0.28947019577026367 seconds for step 5 to finish before starting checkpointing.
I0421 16:10:20.180445 134946399188800 checkpoint_manager.py:2020] [process=7][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0421 16:10:22.083334 2822 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0421 16:10:25.089879 134816896894720 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_false/checkpoints/0/items/array_metadatas/process_7
I0421 16:10:59.809035 134816888502016 base_pytree_checkpoint_handler.py:130] [process=7] /jax/orbax/write/gbytes_per_sec: 38.265 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.28001379966736 s) (per-host)
I0421 16:10:59.809155 134816888502016 async_checkpointer.py:90] [process=7][thread=async_save] 3 Handler Commit operations completed. Time taken: 40.997554s.
I0421 16:11:08.223145 134816888502016 async_checkpointer.py:160] [process=7][thread=async_save] Background save thread done. Time taken: 49.411527s.
I0421 16:11:08.223370 134816943044352 async_checkpointer.py:288] [process=7][thread=save_finalize] Done with waiting for background save thread=async_save.
I0421 16:11:08.223446 134816943044352 async_checkpointer.py:298] [process=7][thread=save_finalize] No errors found in background save thread=async_save.
I0421 16:11:08.223497 134816943044352 checkpoint_manager.py:2137] [process=7][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0421 16:11:08.225190 134816943044352 checkpoint_manager.py:2146] [process=7][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0421 16:11:08.225370 134946399188800 checkpoint_manager.py:2032] [process=7][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0.
W0421 16:11:08.225509 134946399188800 checkpoint_manager.py:1452] Waiting for previous save to complete took 48.045063 seconds. If this number is high, consider checkpointing less frequently.
I0421 16:11:08.227561 134946399188800 checkpoint_manager.py:1512] [process=7] Saving checkpoint at step 5
I0421 16:11:08.229965 134946399188800 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_false/checkpoints/5.
I0421 16:11:08.945563 134946399188800 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0421 16:11:08.945656 134946399188800 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 16:11:08.983575 134946399188800 base_pytree_checkpoint_handler.py:154] [process=7][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.039159s
I0421 16:11:08.983743 134946399188800 base_pytree_checkpoint_handler.py:130] [process=7] /jax/orbax/write/blocking_gbytes_per_sec: 36.262 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04253959655761719 s) (per-host)
I0421 16:11:08.983795 134946399188800 base_pytree_checkpoint_handler.py:768] [process=7][thread=MainThread] Initiated Pytree async_save. Time taken: 0.042613s (batch_requests_ready=0.001747s, total_serialization_initiated=0.040787s, others=0.000078s)
I0421 16:11:08.983880 134946399188800 composite_checkpoint_handler.py:715] [process=7][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.047656s (all_items=0.000015s, per_item={'items': '0.00001454'}, temp_paths=0.047641)
I0421 16:11:08.984556 134946399188800 event_tracking.py:125] [process=7] [async] Finished blocking save in 0.76 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_false/checkpoints/5.
I0421 16:11:08.984840 134816943044352 async_checkpointer.py:76] [process=7][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-21 16:31:08.984818
I0421 16:11:08.992204 134946399188800 checkpoint_manager.py:1560] [process=7][thread=MainThread][step=5] Starting CheckpointManager Save Finalize thread=save_finalize
I0421 16:11:08.992408 134816896894720 async_checkpointer.py:280] [process=7][thread=save_finalize] Waiting for background save thread=async_save.
I0421 16:11:08.992524 134946399188800 standard_logger.py:34] {'step': 5, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776787820.1804156, 'wait_for_prev_duration_secs': 48.04506254196167, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776787868.2276003, 'checkpointer_blocking_duration_secs': 0.7573387622833252, 'get_old_steps_start_time': 1776787868.984962, 'get_old_steps_duration_secs': 3.0994415283203125e-05, 'checkpoint_manager_blocking_start_time': 1776787820.1780808, 'checkpoint_manager_blocking_duration_secs': 48.814409255981445}
I0421 16:11:08.992631 134946399188800 checkpointing.py:408] Started an asynchronous checkpoint save for step 5
I0421 16:11:08.993479 134946399188800 metric_logger.py:196] completed step: 4, seconds: 0.153, TFLOP/s/device: 88.849, Tokens/s/device: 13392.273, total_weights: 65536, loss: 9.460, lm_loss: 9.460, perplexity: 12840.355
I0421 16:11:08.999922 134946399188800 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.174, Tokens/s/device: 13893.411, total_weights: 65536, loss: 8.959, lm_loss: 8.959, perplexity: 7776.467
I0421 16:11:15.132205 134793073248000 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_false/checkpoints/5/items/array_metadatas/process_7
I0421 16:11:31.434421 134946399188800 metric_logger.py:196] completed step: 6, seconds: 49.111, TFLOP/s/device: 0.277, Tokens/s/device: 41.702, total_weights: 65536, loss: 8.469, lm_loss: 8.469, perplexity: 4762.740
I0421 16:11:31.581709 134946399188800 metric_logger.py:196] completed step: 7, seconds: 22.289, TFLOP/s/device: 0.610, Tokens/s/device: 91.886, total_weights: 65536, loss: 8.003, lm_loss: 8.003, perplexity: 2989.151
I0421 16:11:31.729072 134946399188800 metric_logger.py:196] completed step: 8, seconds: 0.153, TFLOP/s/device: 89.007, Tokens/s/device: 13416.136, total_weights: 65536, loss: 7.572, lm_loss: 7.572, perplexity: 1943.098
I0421 16:11:31.875928 134946399188800 checkpointing.py:772] Waiting for step 9 to finish before checkpoint...
I0421 16:11:31.876621 134946399188800 checkpointing.py:776] Waited 0.0007143020629882812 seconds for step 9 to finish before starting checkpointing.
I0421 16:11:31.878680 134946399188800 checkpoint_manager.py:2020] [process=7][thread=MainThread][step=5][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0421 16:11:52.143159 134816943044352 base_pytree_checkpoint_handler.py:130] [process=7] /jax/orbax/write/gbytes_per_sec: 36.563 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 43.20192766189575 s) (per-host)
I0421 16:11:52.143281 134816943044352 async_checkpointer.py:90] [process=7][thread=async_save] 3 Handler Commit operations completed. Time taken: 43.158365s.
I0421 16:11:58.175431 134816943044352 async_checkpointer.py:160] [process=7][thread=async_save] Background save thread done. Time taken: 49.190498s.
I0421 16:11:58.175676 134816896894720 async_checkpointer.py:288] [process=7][thread=save_finalize] Done with waiting for background save thread=async_save.
I0421 16:11:58.175752 134816896894720 async_checkpointer.py:298] [process=7][thread=save_finalize] No errors found in background save thread=async_save.
I0421 16:11:58.175803 134816896894720 checkpoint_manager.py:2137] [process=7][thread=save_finalize][step=5] CheckpointManager Save Finalize is syncing with other hosts...
I0421 16:11:58.177420 134816896894720 checkpoint_manager.py:2146] [process=7][thread=save_finalize][step=5] CheckpointManager Save Finalize is done on all hosts.
I0421 16:11:58.177607 134946399188800 checkpoint_manager.py:2032] [process=7][thread=MainThread][step=5][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=5.
W0421 16:11:58.177751 134946399188800 checkpoint_manager.py:1452] Waiting for previous save to complete took 26.299058 seconds. If this number is high, consider checkpointing less frequently.
I0421 16:11:58.179151 134946399188800 checkpoint_manager.py:1512] [process=7] Saving checkpoint at step 9
I0421 16:11:58.181163 134946399188800 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_false/checkpoints/9.
I0421 16:11:58.894927 134946399188800 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0421 16:11:58.895018 134946399188800 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 16:11:58.929902 134946399188800 base_pytree_checkpoint_handler.py:154] [process=7][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.035797s
I0421 16:11:58.930073 134946399188800 base_pytree_checkpoint_handler.py:130] [process=7] /jax/orbax/write/blocking_gbytes_per_sec: 39.394 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.03915762901306152 s) (per-host)
I0421 16:11:58.930124 134946399188800 base_pytree_checkpoint_handler.py:768] [process=7][thread=MainThread] Initiated Pytree async_save. Time taken: 0.039220s (batch_requests_ready=0.001595s, total_serialization_initiated=0.037557s, others=0.000068s)
I0421 16:11:58.930216 134946399188800 composite_checkpoint_handler.py:715] [process=7][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.043329s (all_items=0.000012s, per_item={'items': '0.00001216'}, temp_paths=0.043316)
I0421 16:11:58.930981 134946399188800 event_tracking.py:125] [process=7] [async] Finished blocking save in 0.75 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_false/checkpoints/9.
I0421 16:11:58.931320 134816896894720 async_checkpointer.py:76] [process=7][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-21 16:31:58.931283
I0421 16:11:58.933292 134946399188800 checkpoint_manager.py:1560] [process=7][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0421 16:11:58.933541 134793073248000 async_checkpointer.py:280] [process=7][thread=save_finalize] Waiting for background save thread=async_save.
I0421 16:11:58.933672 134946399188800 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260421_144122/linen_xpk_main_20260421_144122_16_zarr3_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776787891.8786511, 'wait_for_prev_duration_secs': 26.299058198928833, 'time_between_consecutive_saves_sec': 23.653419494628906, 'checkpointer_blocking_start_time': 1776787918.1791897, 'checkpointer_blocking_duration_secs': 0.7522766590118408, 'get_old_steps_start_time': 1776787918.9314826, 'get_old_steps_duration_secs': 2.6226043701171875e-05, 'checkpoint_manager_blocking_start_time': 1776787891.8768625, 'checkpoint_manager_blocking_duration_secs': 27.056779384613037}
I0421 16:11:58.933843 134946399188800 checkpointing.py:408] Started an asynchronous checkpoint save for step 9
I0421 16:11:58.933887 134946399188800 checkpoint_manager.py:2020] [process=7][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0421 16:12:04.533195 134815830353664 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_false/checkpoints/9/items/array_metadatas/process_7
I0421 16:12:40.000046 134816896894720 base_pytree_checkpoint_handler.py:130] [process=7] /jax/orbax/write/gbytes_per_sec: 38.425 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.10908627510071 s) (per-host)
I0421 16:12:40.000171 134816896894720 async_checkpointer.py:90] [process=7][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.068740s.
I0421 16:12:47.128664 134816896894720 async_checkpointer.py:160] [process=7][thread=async_save] Background save thread done. Time taken: 48.197217s.
I0421 16:12:47.128995 134793073248000 async_checkpointer.py:288] [process=7][thread=save_finalize] Done with waiting for background save thread=async_save.
I0421 16:12:47.129118 134793073248000 async_checkpointer.py:298] [process=7][thread=save_finalize] No errors found in background save thread=async_save.
I0421 16:12:47.129160 134793073248000 checkpoint_manager.py:2137] [process=7][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0421 16:12:47.131972 134793073248000 checkpoint_manager.py:2146] [process=7][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0421 16:12:47.132145 134946399188800 checkpoint_manager.py:2032] [process=7][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9.
I0421 16:12:47.132291 134946399188800 checkpoint_manager.py:2009] [process=7][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0421 16:12:47.133229 134946399188800 metric_logger.py:196] completed step: 9, seconds: 0.147, TFLOP/s/device: 92.245, Tokens/s/device: 13904.164, 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 16:12:55 UTC 2026
EXIT_CODE=0