XPK Start: Fri Apr 24 08:31:19 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.
2026-04-24 08:31:44.203429: 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)
I0424 08:31:44.410198 132465606420288 max_utils.py:273] Attempting to initialize the jax distributed system...
I0424 08:31:53.452249 132465606420288 distributed.py:149] Starting JAX distributed service on [::]:8482
I0424 08:31:53.454657 132465606420288 distributed.py:172] Connecting to JAX distributed service on mt-16-zarr3-false-rs-l6luk-slice-job-0-0.mt-16-zarr3-false-rs-l6luk:8482
I0424 08:31:54.560960 132465606420288 max_utils.py:284] Jax distributed system initialized!
I0424 08:32:00.603538 132465606420288 max_utils.py:800] System Information: Jax Version: 0.9.2
I0424 08:32:00.603644 132465606420288 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0424 08:32:00.603683 132465606420288 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
I0424 08:32:00.603717 132465606420288 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0424 08:32:01.295442 132465606420288 maxtext_utils.py:1604] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1)
I0424 08:32:01.295726 132465606420288 checkpointing.py:677] Setting up checkpoint logger...
I0424 08:32:01.295780 132465606420288 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=False
I0424 08:32:01.295825 132465606420288 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0424 08:32:01.296182 132465606420288 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 0x78796c914080>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0424 08:32:02.558325 132465606420288 checkpointing.py:265] Enabling policy for fixed interval checkpointing.
I0424 08:32:02.558573 132465606420288 checkpoint_manager.py:708] [process=6][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x786574490200>}, handler_registry=None
I0424 08:32:02.558816 132465606420288 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x786574490200>` 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`.
I0424 08:32:02.558865 132465606420288 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7865744908f0>` 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`.
I0424 08:32:02.558899 132465606420288 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 0x786574490200>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x786574490200>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7865744908f0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7865744908f0>}).
I0424 08:32:02.559237 132465606420288 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0424 08:32:02.559308 132465606420288 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7865742bd800> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0424 08:32:04.273732 132344711210752 checkpoint.py:228] Read Metadata={'item_handlers': {'items': 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler'}, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1777019254974743517, 'commit_timestamp_nsecs': 1777019301770798699, 'custom_metadata': {}} from gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_16_zarr3_false/checkpoints/0/_CHECKPOINT_METADATA
I0424 08:32:04.521251 132344711210752 checkpoint_manager.py:1871] Missing metrics for step 0
I0424 08:32:04.649308 132465606420288 checkpoint_manager.py:1812] Found 3 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_16_zarr3_false/checkpoints
I0424 08:32:05.275205 132465606420288 checkpoint_manager.py:929] [process=6][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_20260424_070227/linen_xpk_main_20260424_070227_16_zarr3_false/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7865744932c0>
I0424 08:32:05.275390 132465606420288 checkpointing.py:301] Checkpoint manager created!
I0424 08:32:06.203835 132465606420288 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0424 08:32:06.203952 132465606420288 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0424 08:32:06.585666 132465606420288 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch_attn', 'activation_length_attn', 'activation_embed_attn').
I0424 08:32:06.585761 132465606420288 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0424 08:32:06.602289 132465606420288 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch_attn', 'activation_length_attn', 'activation_embed_attn').
I0424 08:32:06.602350 132465606420288 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0424 08:32:06.626208 132465606420288 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim').
I0424 08:32:06.626291 132465606420288 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0424 08:32:06.642946 132465606420288 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim').
I0424 08:32:06.643010 132465606420288 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0424 08:32:06.659577 132465606420288 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim').
I0424 08:32:06.659637 132465606420288 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0424 08:32:06.684462 132465606420288 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch_attn', 'activation_length_attn', 'activation_heads', 'activation_kv').
I0424 08:32:06.684540 132465606420288 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0424 08:32:06.706444 132465606420288 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0424 08:32:06.706510 132465606420288 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0424 08:32:06.915524 132465606420288 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint
I0424 08:32:06.915632 132465606420288 checkpointing.py:581] restoring from this run's directory step 9
I0424 08:32:07.169829 132465606420288 event_tracking.py:70] [process=6] [sync] Started load checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_16_zarr3_false/checkpoints/9.
I0424 08:32:07.413200 132465606420288 checkpointer.py:307] Restoring checkpoint from gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_16_zarr3_false/checkpoints/9.
I0424 08:32:07.413651 132465606420288 event_tracking.py:125] [process=6] [sync] Finished blocking load in 0.24 seconds. Continuing load @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_16_zarr3_false/checkpoints/9.
I0424 08:32:09.114791 1445 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0424 08:32:14.682622 132465606420288 jax_array_handlers.py:843] [process=6] /jax/orbax/read/worker/io/requested throughput: 283.524 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 5.573685884475708 s) (per-host)
I0424 08:32:14.687364 132465606420288 base_pytree_checkpoint_handler.py:130] [process=6] /jax/checkpoint/read/gbytes_per_sec: 264.713 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 5.978528261184692 s) (per-host)
I0424 08:32:15.338886 132465606420288 event_tracking.py:138] [process=6] [sync] Finished load in 8.17 seconds @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_16_zarr3_false/checkpoints/9
I0424 08:32:15.339039 132465606420288 standard_logger.py:34] {'step': 9, 'event_type': 'restore', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_16_zarr3_false/checkpoints', 'checkpointer_start_time': 1777019527.1697273, 'checkpointer_duration_secs': 8.169278383255005, 'checkpoint_manager_start_time': 1777019526.9158754, 'checkpoint_manager_duration_secs': 8.423132419586182}
fsdp: 32
I0424 08:32:15.763562 132465606420288 maxtext_utils.py:1707] params/params/decoder/decoder_norm/scale
Shape: float32[2048]
Logical: P('norm',)
Physical: (None,)
I0424 08:32:15.763692 132465606420288 maxtext_utils.py:1707] params/params/decoder/layers/mlp/wi_0/kernel
Shape: float32[2048,16,7168]
Logical: P('embed', 'layers', 'mlp')
Physical: ('fsdp', None, None)
I0424 08:32:15.763746 132465606420288 maxtext_utils.py:1707] params/params/decoder/layers/mlp/wi_1/kernel
Shape: float32[2048,16,7168]
Logical: P('embed', 'layers', 'mlp')
Physical: ('fsdp', None, None)
I0424 08:32:15.763803 132465606420288 maxtext_utils.py:1707] params/params/decoder/layers/mlp/wo/kernel
Shape: float32[7168,16,2048]
Logical: P('mlp', 'layers', 'embed')
Physical: (None, None, 'fsdp')
I0424 08:32:15.763855 132465606420288 maxtext_utils.py:1707] params/params/decoder/layers/post_self_attention_layer_norm/scale
Shape: float32[2048,16]
Logical: P('norm', 'layers')
Physical: (None, None)
I0424 08:32:15.763892 132465606420288 maxtext_utils.py:1707] params/params/decoder/layers/pre_self_attention_layer_norm/scale
Shape: float32[2048,16]
Logical: P('norm', 'layers')
Physical: (None, None)
I0424 08:32:15.763942 132465606420288 maxtext_utils.py:1707] 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)
I0424 08:32:15.763991 132465606420288 maxtext_utils.py:1707] 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')
I0424 08:32:15.764029 132465606420288 maxtext_utils.py:1707] 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)
I0424 08:32:15.764065 132465606420288 maxtext_utils.py:1707] 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)
I0424 08:32:15.764122 132465606420288 maxtext_utils.py:1707] params/params/decoder/logits_dense/kernel
Shape: float32[2048,32000]
Logical: P('embed_vocab', 'vocab')
Physical: ('fsdp', None)
I0424 08:32:15.764169 132465606420288 maxtext_utils.py:1707] params/params/token_embedder/embedding
Shape: float32[32000,2048]
Logical: P('vocab', 'embed_vocab')
Physical: (None, 'fsdp')
I0424 08:32:16.257295 132465606420288 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0424 08:32:16.257392 132465606420288 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0424 08:32:16.273017 132465606420288 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0424 08:32:16.273078 132465606420288 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0424 08:32:27.229995 132465606420288 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.
I0424 08:32:27.230792 132465606420288 metric_logger.py:301] number parameters: 1.104 billion
I0424 08:32:38.430070 132465606420288 checkpointing.py:772] Waiting for step 10 to finish before checkpoint...
I0424 08:32:39.190154 132465606420288 checkpointing.py:776] Waited 0.7600383758544922 seconds for step 10 to finish before starting checkpointing.
I0424 08:32:39.192616 132465606420288 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0424 08:32:39.194676 132465606420288 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 10
I0424 08:32:39.196548 132465606420288 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_16_zarr3_false/checkpoints/10.
I0424 08:32:39.520389 132465606420288 signaling_client.py:364] Using JaxDistributedSignalingClient
I0424 08:32:39.521240 132465606420288 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0424 08:32:39.521298 132465606420288 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
I0424 08:32:39.797171 132465606420288 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.276862s
I0424 08:32:39.797348 132465606420288 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.495 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2807450294494629 s) (per-host)
I0424 08:32:39.797403 132465606420288 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.280817s (batch_requests_ready=0.002168s, total_serialization_initiated=0.278569s, others=0.000080s)
I0424 08:32:39.797492 132465606420288 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.285096s (all_items=0.000017s, per_item={'items': '0.00001740'}, temp_paths=0.285079)
I0424 08:32:39.798235 132465606420288 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.60 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_16_zarr3_false/checkpoints/10.
I0424 08:32:39.798505 132344669247232 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 08:52:39.798481
I0424 08:32:39.800492 132465606420288 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=10] Starting CheckpointManager Save Finalize thread=save_finalize
I0424 08:32:39.800781 132340869220096 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save.
I0424 08:32:39.800935 132465606420288 standard_logger.py:34] {'step': 10, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_16_zarr3_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777019559.1925962, 'wait_for_prev_duration_secs': 6.127357482910156e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777019559.1947165, 'checkpointer_blocking_duration_secs': 0.6039035320281982, 'get_old_steps_start_time': 1777019559.798645, 'get_old_steps_duration_secs': 3.0994415283203125e-05, 'checkpoint_manager_blocking_start_time': 1777019559.190644, 'checkpoint_manager_blocking_duration_secs': 0.6102547645568848}
I0424 08:32:39.801038 132465606420288 checkpointing.py:408] Started an asynchronous checkpoint save for step 10
I0424 08:32:39.801086 132465606420288 max_utils.py:750]
Memstats: After params initialized:
I0424 08:32:39.801159 132465606420288 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_24(process=6,(0,6,0,0))
I0424 08:32:39.801196 132465606420288 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_25(process=6,(1,6,0,0))
I0424 08:32:39.801221 132465606420288 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_28(process=6,(0,7,0,0))
I0424 08:32:39.801246 132465606420288 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_29(process=6,(1,7,0,0))
I0424 08:32:40.111648 132465606420288 metric_logger.py:196] completed step: 10, seconds: 11.199, TFLOP/s/device: 1.213, Tokens/s/device: 182.871, total_weights: 65536, loss: 6.833, lm_loss: 6.833, perplexity: 927.869
I0424 08:32:40.295436 132465606420288 metric_logger.py:196] completed step: 11, seconds: 1.680, TFLOP/s/device: 8.088, Tokens/s/device: 1219.056, total_weights: 65536, loss: 6.527, lm_loss: 6.527, perplexity: 683.659
I0424 08:32:40.443029 132465606420288 metric_logger.py:196] completed step: 12, seconds: 0.036, TFLOP/s/device: 373.437, Tokens/s/device: 56288.478, total_weights: 65536, loss: 6.265, lm_loss: 6.265, perplexity: 526.068
I0424 08:32:40.590398 132465606420288 metric_logger.py:196] completed step: 13, seconds: 0.154, TFLOP/s/device: 88.494, Tokens/s/device: 13338.804, total_weights: 65536, loss: 6.045, lm_loss: 6.045, perplexity: 422.001
I0424 08:32:40.595078 132465606420288 checkpointing.py:772] Waiting for step 15 to finish before checkpoint...
I0424 08:32:40.884347 132465606420288 checkpointing.py:776] Waited 0.28921961784362793 seconds for step 15 to finish before starting checkpointing.
I0424 08:32:40.887401 132465606420288 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=10][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0424 08:32:44.771718 132340877612800 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_16_zarr3_false/checkpoints/10/items/array_metadatas/process_6
I0424 08:33:23.629943 132344669247232 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 35.808 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 44.11332321166992 s) (per-host)
I0424 08:33:23.630050 132344669247232 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 43.831467s.
I0424 08:33:30.117366 132344669247232 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 50.318756s.
I0424 08:33:30.117663 132340869220096 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save.
I0424 08:33:30.117777 132340869220096 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save.
I0424 08:33:30.117824 132340869220096 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=10] CheckpointManager Save Finalize is syncing with other hosts...
I0424 08:33:30.120133 132340869220096 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=10] CheckpointManager Save Finalize is done on all hosts.
I0424 08:33:30.120321 132465606420288 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=10][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=10.
W0424 08:33:30.120456 132465606420288 checkpoint_manager.py:1452] Waiting for previous save to complete took 49.233058 seconds. If this number is high, consider checkpointing less frequently.
I0424 08:33:30.122353 132465606420288 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 15
I0424 08:33:30.124646 132465606420288 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_16_zarr3_false/checkpoints/15.
I0424 08:33:30.781718 132465606420288 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0424 08:33:30.781815 132465606420288 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
I0424 08:33:30.807692 132465606420288 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.027181s
I0424 08:33:30.807865 132465606420288 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 50.400 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.030606746673583984 s) (per-host)
I0424 08:33:30.807930 132465606420288 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.030683s (batch_requests_ready=0.001747s, total_serialization_initiated=0.028854s, others=0.000082s)
I0424 08:33:30.808037 132465606420288 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.035583s (all_items=0.000013s, per_item={'items': '0.00001311'}, temp_paths=0.035570)
I0424 08:33:30.808843 132465606420288 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.69 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_16_zarr3_false/checkpoints/15.
I0424 08:33:30.809186 132340869220096 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 08:53:30.809148
I0424 08:33:30.822069 132465606420288 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=15] Starting CheckpointManager Save Finalize thread=save_finalize
I0424 08:33:30.822335 132338159687424 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save.
I0424 08:33:30.822469 132465606420288 standard_logger.py:34] {'step': 15, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_16_zarr3_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777019560.8873708, 'wait_for_prev_duration_secs': 49.23305821418762, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777019610.1223917, 'checkpointer_blocking_duration_secs': 0.6869401931762695, 'get_old_steps_start_time': 1777019610.8093581, 'get_old_steps_duration_secs': 3.0279159545898438e-05, 'checkpoint_manager_blocking_start_time': 1777019560.8850012, 'checkpoint_manager_blocking_duration_secs': 49.93743395805359}
I0424 08:33:30.822576 132465606420288 checkpointing.py:408] Started an asynchronous checkpoint save for step 15
I0424 08:33:30.823380 132465606420288 metric_logger.py:196] completed step: 14, seconds: 0.148, TFLOP/s/device: 92.042, Tokens/s/device: 13873.647, total_weights: 65536, loss: 5.864, lm_loss: 5.864, perplexity: 352.193
I0424 08:33:30.829704 132465606420288 metric_logger.py:196] completed step: 15, seconds: 0.147, TFLOP/s/device: 92.194, Tokens/s/device: 13896.522, total_weights: 65536, loss: 5.719, lm_loss: 5.719, perplexity: 304.661
I0424 08:33:36.160636 132340877612800 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_16_zarr3_false/checkpoints/15/items/array_metadatas/process_6
I0424 08:33:51.650159 132465606420288 metric_logger.py:196] completed step: 16, seconds: 50.233, TFLOP/s/device: 0.270, Tokens/s/device: 40.770, total_weights: 65536, loss: 5.605, lm_loss: 5.605, perplexity: 271.872
I0424 08:33:51.797506 132465606420288 metric_logger.py:196] completed step: 17, seconds: 20.674, TFLOP/s/device: 0.657, Tokens/s/device: 99.061, total_weights: 65536, loss: 5.517, lm_loss: 5.517, perplexity: 248.975
I0424 08:33:51.944701 132465606420288 metric_logger.py:196] completed step: 18, seconds: 0.152, TFLOP/s/device: 89.132, Tokens/s/device: 13434.882, total_weights: 65536, loss: 5.448, lm_loss: 5.448, perplexity: 232.333
I0424 08:33:52.091475 132465606420288 checkpointing.py:772] Waiting for step 19 to finish before checkpoint...
I0424 08:33:52.092180 132465606420288 checkpointing.py:776] Waited 0.0007259845733642578 seconds for step 19 to finish before starting checkpointing.
I0424 08:33:52.094376 132465606420288 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=15][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0424 08:34:13.901948 132340869220096 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 36.629 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 43.12465310096741 s) (per-host)
I0424 08:34:13.902074 132340869220096 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 43.092778s.
I0424 08:34:20.437817 132340869220096 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 49.628505s.
I0424 08:34:20.438160 132338159687424 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save.
I0424 08:34:20.438282 132338159687424 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save.
I0424 08:34:20.438342 132338159687424 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=15] CheckpointManager Save Finalize is syncing with other hosts...
I0424 08:34:20.439809 132338159687424 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=15] CheckpointManager Save Finalize is done on all hosts.
I0424 08:34:20.439998 132465606420288 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=15][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=15.
W0424 08:34:20.440138 132465606420288 checkpoint_manager.py:1452] Waiting for previous save to complete took 28.345769 seconds. If this number is high, consider checkpointing less frequently.
I0424 08:34:20.441556 132465606420288 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 19
I0424 08:34:20.443657 132465606420288 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_16_zarr3_false/checkpoints/19.
I0424 08:34:20.776228 132465606420288 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0424 08:34:20.776324 132465606420288 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
I0424 08:34:20.802274 132465606420288 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.026981s
I0424 08:34:20.802419 132465606420288 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 50.647 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.030457496643066406 s) (per-host)
I0424 08:34:20.802464 132465606420288 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.030513s (batch_requests_ready=0.001639s, total_serialization_initiated=0.028814s, others=0.000059s)
I0424 08:34:20.802546 132465606420288 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.034634s (all_items=0.000011s, per_item={'items': '0.00001144'}, temp_paths=0.034622)
I0424 08:34:20.803194 132465606420288 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.36 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_16_zarr3_false/checkpoints/19.
I0424 08:34:20.803507 132342505010944 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 08:54:20.803465
I0424 08:34:20.807675 132465606420288 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=19] Starting CheckpointManager Save Finalize thread=save_finalize
I0424 08:34:20.807917 132338159687424 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save.
I0424 08:34:20.808033 132465606420288 standard_logger.py:34] {'step': 19, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_16_zarr3_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777019632.0943458, 'wait_for_prev_duration_secs': 28.345768928527832, 'time_between_consecutive_saves_sec': 21.97417187690735, 'checkpointer_blocking_start_time': 1777019660.4415958, 'checkpointer_blocking_duration_secs': 0.36205220222473145, 'get_old_steps_start_time': 1777019660.8036656, 'get_old_steps_duration_secs': 2.6226043701171875e-05, 'checkpoint_manager_blocking_start_time': 1777019632.092423, 'checkpoint_manager_blocking_duration_secs': 28.715579509735107}
I0424 08:34:20.808152 132465606420288 checkpointing.py:408] Started an asynchronous checkpoint save for step 19
I0424 08:34:20.808195 132465606420288 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=19][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0424 08:34:25.917613 132340877612800 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_16_zarr3_false/checkpoints/19/items/array_metadatas/process_6
I0424 08:35:02.960242 132342505010944 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 37.442 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.18822717666626 s) (per-host)
I0424 08:35:02.960364 132342505010944 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.156747s.
I0424 08:35:08.946881 132342505010944 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 48.143250s.
I0424 08:35:08.947189 132338159687424 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save.
I0424 08:35:08.947314 132338159687424 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save.
I0424 08:35:08.947357 132338159687424 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=19] CheckpointManager Save Finalize is syncing with other hosts...
I0424 08:35:08.950397 132338159687424 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=19] CheckpointManager Save Finalize is done on all hosts.
I0424 08:35:08.950556 132465606420288 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=19][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=19.
I0424 08:35:08.950709 132465606420288 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0424 08:35:08.951725 132465606420288 metric_logger.py:196] completed step: 19, seconds: 0.147, TFLOP/s/device: 92.306, Tokens/s/device: 13913.327, 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: Fri Apr 24 08:35:19 UTC 2026
EXIT_CODE=0