MaxView

XPK Start: Sat Apr 25 20:13:02 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. 
2026-04-25 20:13:27.605675: 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)
I0425 20:13:27.815622 134767933470528 max_utils.py:273] Attempting to initialize the jax distributed system...
I0425 20:13:36.856436 134767933470528 distributed.py:149] Starting JAX distributed service on [::]:8482
I0425 20:13:36.858822 134767933470528 distributed.py:172] Connecting to JAX distributed service on mt-01-base-oeu6z-slice-job-0-0.mt-01-base-oeu6z:8482
I0425 20:13:37.909036 134767933470528 max_utils.py:284] Jax distributed system initialized!
I0425 20:13:44.152974 134767933470528 max_utils.py:800] System Information: Jax Version: 0.9.2
I0425 20:13:44.153080 134767933470528 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0425 20:13:44.153145 134767933470528 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
I0425 20:13:44.153184 134767933470528 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0425 20:13:44.845929 134767933470528 maxtext_utils.py:1565] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0425 20:13:44.846255 134767933470528 checkpointing.py:677] Setting up checkpoint logger...
I0425 20:13:44.846322 134767933470528 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True
I0425 20:13:44.846378 134767933470528 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0425 20:13:44.846757 134767933470528 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 0x7a917a7182f0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0425 20:13:48.551194 134767933470528 checkpointing.py:265] Enabling policy for fixed interval checkpointing.
I0425 20:13:48.551568 134767933470528 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 0x7a7d20183320>}, handler_registry=None
I0425 20:13:48.551838 134767933470528 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7a7d20183320>` 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`.
I0425 20:13:48.551895 134767933470528 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7a7d20187170>` 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`.
I0425 20:13:48.551944 134767933470528 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 0x7a7d20183320>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7a7d20183320>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7a7d20187170>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7a7d20187170>}).
I0425 20:13:48.552316 134767933470528 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0425 20:13:48.552399 134767933470528 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7a7c486eb2e0> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0425 20:13:49.714006 134767933470528 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_01_base/checkpoints
I0425 20:13:49.723512 134767933470528 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=10), preservation_policy=LatestN(n=None), prevent_write_metrics=False, enable_should_save_is_saving_in_progress_check=True, enable_per_process_directory_creation=False, lightweight_initialize=False), root_directory=gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_01_base/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7a7d20184b00>
I0425 20:13:49.723643 134767933470528 checkpointing.py:301] Checkpoint manager created!
I0425 20:13:50.651903 134767933470528 nnx_wrappers.py:453] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0425 20:13:50.652039 134767933470528 nnx_wrappers.py:453] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0425 20:13:51.046495 134767933470528 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0425 20:13:51.046598 134767933470528 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0425 20:13:51.063167 134767933470528 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0425 20:13:51.063231 134767933470528 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0425 20:13:51.086918 134767933470528 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0425 20:13:51.086990 134767933470528 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 20:13:51.103525 134767933470528 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0425 20:13:51.103593 134767933470528 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 20:13:51.120200 134767933470528 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0425 20:13:51.120261 134767933470528 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 20:13:51.145268 134767933470528 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0425 20:13:51.145344 134767933470528 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 20:13:51.166491 134767933470528 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0425 20:13:51.166562 134767933470528 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0425 20:13:51.377053 134767933470528 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint
I0425 20:13:51.377173 134767933470528 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0425 20:13:52.830941 134767933470528 maxtext_utils.py:1668]  params/params/decoder/decoder_norm/scale
    Shape:     float32[2048]
    Logical:   P('norm',)
    Physical:  (None,)
I0425 20:13:52.831063 134767933470528 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)
I0425 20:13:52.831155 134767933470528 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)
I0425 20:13:52.831219 134767933470528 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')
I0425 20:13:52.831278 134767933470528 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)
I0425 20:13:52.831315 134767933470528 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)
I0425 20:13:52.831366 134767933470528 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)
I0425 20:13:52.831415 134767933470528 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')
I0425 20:13:52.831454 134767933470528 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)
I0425 20:13:52.831490 134767933470528 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)
I0425 20:13:52.831537 134767933470528 maxtext_utils.py:1668]  params/params/decoder/logits_dense/kernel
    Shape:     float32[2048,32000]
    Logical:   P('embed_vocab', 'vocab')
    Physical:  ('fsdp', None)

I0425 20:13:52.831584 134767933470528 maxtext_utils.py:1668]  params/params/token_embedder/embedding
    Shape:     float32[32000,2048]
    Logical:   P('vocab', 'embed_vocab')
    Physical:  (None, 'fsdp')
I0425 20:13:53.323393 134767933470528 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0425 20:13:53.323486 134767933470528 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0425 20:13:53.338953 134767933470528 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0425 20:13:53.339016 134767933470528 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0425 20:14:04.053490 134767933470528 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.
I0425 20:14:04.054333 134767933470528 metric_logger.py:301] number parameters: 1.104 billion
I0425 20:14:15.505980 134767933470528 checkpointing.py:772] Waiting for step 0 to finish before checkpoint...
I0425 20:14:15.679691 134767933470528 checkpointing.py:776] Waited 0.1736910343170166 seconds for step 0 to finish before starting checkpointing.
I0425 20:14:15.682358 134767933470528 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0425 20:14:15.684069 134767933470528 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 0
I0425 20:14:15.685537 134767933470528 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_01_base/checkpoints/0.
I0425 20:14:16.238077 134767933470528 signaling_client.py:364] Using JaxDistributedSignalingClient
I0425 20:14:16.238948 134767933470528 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0425 20:14:16.239002 134767933470528 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
I0425 20:14:16.517847 134767933470528 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.279843s
I0425 20:14:16.518022 134767933470528 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.404 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2854630947113037 s) (per-host)
I0425 20:14:16.518072 134767933470528 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.285523s (batch_requests_ready=0.002207s, total_serialization_initiated=0.283248s, others=0.000068s)
I0425 20:14:16.518177 134767933470528 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.290410s (all_items=0.000019s, per_item={'items': '0.00001860'}, temp_paths=0.290391)
I0425 20:14:16.518939 134767933470528 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.83 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_01_base/checkpoints/0.
I0425 20:14:16.519287 134639486592768 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 20:34:16.519248
I0425 20:14:16.528261 134767933470528 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0425 20:14:16.528563 134636777019136 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save.
I0425 20:14:16.528723 134767933470528 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_01_base/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777148055.682341, 'wait_for_prev_duration_secs': 5.984306335449219e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777148055.6841183, 'checkpointer_blocking_duration_secs': 0.8353390693664551, 'get_old_steps_start_time': 1777148056.5194824, 'get_old_steps_duration_secs': 2.8848648071289062e-05, 'checkpoint_manager_blocking_start_time': 1777148055.680241, 'checkpoint_manager_blocking_duration_secs': 0.8484420776367188}
I0425 20:14:16.528830 134767933470528 checkpointing.py:408] Started an asynchronous checkpoint save for step 0
I0425 20:14:16.528878 134767933470528 max_utils.py:750] 
Memstats: After params initialized:
I0425 20:14:16.528927 134767933470528 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_24(process=6,(0,6,0,0))
I0425 20:14:16.528958 134767933470528 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_25(process=6,(1,6,0,0))
I0425 20:14:16.528986 134767933470528 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_28(process=6,(0,7,0,0))
I0425 20:14:16.529011 134767933470528 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_29(process=6,(1,7,0,0))
I0425 20:14:16.842514 134767933470528 metric_logger.py:196] completed step: 0, seconds: 11.452, TFLOP/s/device: 1.186, Tokens/s/device: 178.841, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0425 20:14:17.025043 134767933470528 metric_logger.py:196] completed step: 1, seconds: 1.335, TFLOP/s/device: 10.178, Tokens/s/device: 1534.078, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0425 20:14:17.435612 134767933470528 metric_logger.py:196] completed step: 2, seconds: 0.035, TFLOP/s/device: 387.727, Tokens/s/device: 58442.485, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28637.129
I0425 20:14:17.582929 134767933470528 metric_logger.py:196] completed step: 3, seconds: 0.411, TFLOP/s/device: 33.057, Tokens/s/device: 4982.641, total_weights: 65536, loss: 9.734, lm_loss: 9.734, perplexity: 16889.203
I0425 20:14:17.878088 134767933470528 metric_logger.py:196] completed step: 4, seconds: 0.153, TFLOP/s/device: 88.641, Tokens/s/device: 13360.908, total_weights: 65536, loss: 9.277, lm_loss: 9.277, perplexity: 10694.614
I0425 20:14:17.884275 134767933470528 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.278, Tokens/s/device: 13909.169, total_weights: 65536, loss: 8.892, lm_loss: 8.892, perplexity: 7270.717
I0425 20:14:19.773006    2801 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0425 20:14:23.153474 134636822853376 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_01_base/checkpoints/0/items/array_metadatas/process_6
I0425 20:14:39.591686 134767933470528 metric_logger.py:196] completed step: 6, seconds: 0.296, TFLOP/s/device: 45.957, Tokens/s/device: 6927.203, total_weights: 65536, loss: 8.592, lm_loss: 8.592, perplexity: 5390.759
I0425 20:14:39.738885 134767933470528 metric_logger.py:196] completed step: 7, seconds: 21.561, TFLOP/s/device: 0.630, Tokens/s/device: 94.987, total_weights: 65536, loss: 8.384, lm_loss: 8.384, perplexity: 4376.905
I0425 20:14:39.886555 134767933470528 metric_logger.py:196] completed step: 8, seconds: 0.152, TFLOP/s/device: 89.149, Tokens/s/device: 13437.527, total_weights: 65536, loss: 8.255, lm_loss: 8.255, perplexity: 3846.406
I0425 20:14:40.032897 134767933470528 checkpointing.py:772] Waiting for step 9 to finish before checkpoint...
I0425 20:14:40.033661 134767933470528 checkpointing.py:776] Waited 0.0007841587066650391 seconds for step 9 to finish before starting checkpointing.
I0425 20:14:40.035672 134767933470528 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0425 20:14:52.933336 134639486592768 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 43.040 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 36.70071887969971 s) (per-host)
I0425 20:14:52.933459 134639486592768 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 36.414048s.
I0425 20:15:02.333349 134639486592768 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 45.813922s.
I0425 20:15:02.333642 134636777019136 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save.
I0425 20:15:02.333775 134636777019136 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save.
I0425 20:15:02.333839 134636777019136 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0425 20:15:02.336488 134636777019136 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0425 20:15:02.336676 134767933470528 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0.
W0425 20:15:02.336841 134767933470528 checkpoint_manager.py:1452] Waiting for previous save to complete took 22.301167 seconds. If this number is high, consider checkpointing less frequently.
I0425 20:15:02.338621 134767933470528 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 9
I0425 20:15:02.340620 134767933470528 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_01_base/checkpoints/9.
I0425 20:15:02.665428 134767933470528 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0425 20:15:02.665528 134767933470528 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
I0425 20:15:02.707134 134767933470528 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.042740s
I0425 20:15:02.707306 134767933470528 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 33.408 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.0461733341217041 s) (per-host)
I0425 20:15:02.707359 134767933470528 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.046236s (batch_requests_ready=0.001770s, total_serialization_initiated=0.044396s, others=0.000070s)
I0425 20:15:02.707445 134767933470528 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.050202s (all_items=0.000016s, per_item={'items': '0.00001645'}, temp_paths=0.050185)
I0425 20:15:02.708068 134767933470528 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.37 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_01_base/checkpoints/9.
I0425 20:15:02.708437 134636777019136 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 20:35:02.708401
I0425 20:15:02.710408 134767933470528 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0425 20:15:02.710699 134636822853376 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save.
I0425 20:15:02.710836 134767933470528 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_01_base/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777148080.035642, 'wait_for_prev_duration_secs': 22.301166772842407, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777148102.3386643, 'checkpointer_blocking_duration_secs': 0.369920015335083, 'get_old_steps_start_time': 1777148102.7086074, 'get_old_steps_duration_secs': 2.956390380859375e-05, 'checkpoint_manager_blocking_start_time': 1777148080.0339355, 'checkpoint_manager_blocking_duration_secs': 22.67686891555786}
I0425 20:15:02.711000 134767933470528 checkpointing.py:408] Started an asynchronous checkpoint save for step 9
I0425 20:15:02.711044 134767933470528 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0425 20:15:08.199142 134617570969344 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_01_base/checkpoints/9/items/array_metadatas/process_6
I0425 20:15:44.768868 134636777019136 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 37.513 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.10769319534302 s) (per-host)
I0425 20:15:44.768996 134636777019136 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.060440s.
I0425 20:15:52.622079 134636777019136 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 49.913508s.
I0425 20:15:52.622357 134636822853376 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save.
I0425 20:15:52.622481 134636822853376 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save.
I0425 20:15:52.622529 134636822853376 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0425 20:15:52.624392 134636822853376 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0425 20:15:52.624570 134767933470528 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9.
I0425 20:15:52.624715 134767933470528 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0425 20:15:52.625742 134767933470528 metric_logger.py:196] completed step: 9, seconds: 0.147, TFLOP/s/device: 92.325, Tokens/s/device: 13916.163, total_weights: 65536, loss: 8.179, lm_loss: 8.179, perplexity: 3564.635
Per train step:
 Total TFLOPs: 13.59 
 split as 93.93% learnable weight flops and 6.07% attention flops
XPK End: Sat Apr 25 20:16:02 UTC 2026
EXIT_CODE=0