MaxView

XPK Start: Wed Apr 22 22:36:00 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. 
2026-04-22 22:36:25.748377: 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)
I0422 22:36:25.959681 136610221795136 max_utils.py:273] Attempting to initialize the jax distributed system...
I0422 22:36:34.998980 136610221795136 distributed.py:149] Starting JAX distributed service on [::]:8482
I0422 22:36:35.001366 136610221795136 distributed.py:172] Connecting to JAX distributed service on mt-15-ocdbt-false-sv-qpfjg-slice-job-0-0.mt-15-ocdbt-false-sv-qpfjg:8482
I0422 22:36:35.978296 136610221795136 max_utils.py:284] Jax distributed system initialized!
I0422 22:36:41.858761 136610221795136 max_utils.py:800] System Information: Jax Version: 0.9.2
I0422 22:36:41.858867 136610221795136 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0422 22:36:41.858908 136610221795136 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
I0422 22:36:41.858947 136610221795136 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0422 22:36:42.552363 136610221795136 maxtext_utils.py:1565] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0422 22:36:42.552645 136610221795136 checkpointing.py:677] Setting up checkpoint logger...
I0422 22:36:42.552701 136610221795136 checkpointing.py:233] Creating checkpoint manager with ocdbt=False and zarr3=True
I0422 22:36:42.552748 136610221795136 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0422 22:36:42.553107 136610221795136 base_pytree_checkpoint_handler.py:441] Created BasePyTreeCheckpointHandler: use_ocdbt=False, use_zarr3=True, pytree_metadata_options=PyTreeMetadataOptions(support_rich_types=False), array_metadata_store=<orbax.checkpoint._src.metadata.array_metadata_store.Store object at 0x7c3e54044350>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0422 22:36:46.282009 136610221795136 checkpointing.py:265] Enabling policy for fixed interval checkpointing.
I0422 22:36:46.282267 136610221795136 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 0x7c2a20102240>}, handler_registry=None
I0422 22:36:46.282501 136610221795136 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7c2a20102240>` 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`.
I0422 22:36:46.282549 136610221795136 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7c2a201071d0>` 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`.
I0422 22:36:46.282582 136610221795136 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 0x7c2a20102240>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7c2a20102240>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7c2a201071d0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7c2a201071d0>}).
I0422 22:36:46.282899 136610221795136 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0422 22:36:46.282968 136610221795136 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7c29f04772e0> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0422 22:36:47.576801 136610221795136 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_15_ocdbt_false/checkpoints
I0422 22:36:47.604059 136610221795136 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_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_15_ocdbt_false/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7c2a20103050>
I0422 22:36:47.604206 136610221795136 checkpointing.py:301] Checkpoint manager created!
I0422 22:36:48.532334 136610221795136 nnx_wrappers.py:453] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0422 22:36:48.532449 136610221795136 nnx_wrappers.py:453] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0422 22:36:48.913460 136610221795136 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0422 22:36:48.913558 136610221795136 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0422 22:36:48.930362 136610221795136 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0422 22:36:48.930422 136610221795136 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0422 22:36:48.954366 136610221795136 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0422 22:36:48.954432 136610221795136 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 22:36:48.971299 136610221795136 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0422 22:36:48.971360 136610221795136 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 22:36:48.988091 136610221795136 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0422 22:36:48.988161 136610221795136 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 22:36:49.013384 136610221795136 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0422 22:36:49.013453 136610221795136 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 22:36:49.034837 136610221795136 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0422 22:36:49.034905 136610221795136 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0422 22:36:49.245963 136610221795136 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint
I0422 22:36:49.246072 136610221795136 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0422 22:36:50.675604 136610221795136 maxtext_utils.py:1668]  params/params/decoder/decoder_norm/scale
    Shape:     float32[2048]
    Logical:   P('norm',)
    Physical:  (None,)
I0422 22:36:50.675731 136610221795136 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)
I0422 22:36:50.675791 136610221795136 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)
I0422 22:36:50.675852 136610221795136 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')
I0422 22:36:50.675904 136610221795136 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)
I0422 22:36:50.675942 136610221795136 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)
I0422 22:36:50.675994 136610221795136 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)
I0422 22:36:50.676046 136610221795136 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')
I0422 22:36:50.676086 136610221795136 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)
I0422 22:36:50.676149 136610221795136 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)
I0422 22:36:50.676199 136610221795136 maxtext_utils.py:1668]  params/params/decoder/logits_dense/kernel
    Shape:     float32[2048,32000]
    Logical:   P('embed_vocab', 'vocab')

    Physical:  ('fsdp', None)
I0422 22:36:50.676248 136610221795136 maxtext_utils.py:1668]  params/params/token_embedder/embedding
    Shape:     float32[32000,2048]
    Logical:   P('vocab', 'embed_vocab')
    Physical:  (None, 'fsdp')
I0422 22:36:51.182976 136610221795136 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0422 22:36:51.183072 136610221795136 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0422 22:36:51.199059 136610221795136 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0422 22:36:51.199133 136610221795136 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0422 22:37:02.191461 136610221795136 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.
I0422 22:37:02.192334 136610221795136 metric_logger.py:301] number parameters: 1.104 billion
I0422 22:37:13.386329 136610221795136 checkpointing.py:772] Waiting for step 0 to finish before checkpoint...
I0422 22:37:13.665631 136610221795136 checkpointing.py:776] Waited 0.2792785167694092 seconds for step 0 to finish before starting checkpointing.
I0422 22:37:13.668252 136610221795136 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0422 22:37:13.670038 136610221795136 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 0
I0422 22:37:13.671757 136610221795136 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_15_ocdbt_false/checkpoints/0.
I0422 22:37:14.413047 136610221795136 signaling_client.py:364] Using JaxDistributedSignalingClient
I0422 22:37:14.413958 136610221795136 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0422 22:37:14.414014 136610221795136 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
I0422 22:37:14.689473 136610221795136 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.276500s
I0422 22:37:14.689655 136610221795136 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.466 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2822377681732178 s) (per-host)
I0422 22:37:14.689709 136610221795136 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.282302s (batch_requests_ready=0.002523s, total_serialization_initiated=0.279708s, others=0.000072s)
I0422 22:37:14.689805 136610221795136 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.286794s (all_items=0.000019s, per_item={'items': '0.00001907'}, temp_paths=0.286775)
I0422 22:37:14.690675 136610221795136 event_tracking.py:125] [process=6] [async] Finished blocking save in 1.02 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_15_ocdbt_false/checkpoints/0.
I0422 22:37:14.691020 136481330521856 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 22:57:14.690983
I0422 22:37:14.703276 136610221795136 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0422 22:37:14.703573 136479183456000 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save.
I0422 22:37:14.703727 136610221795136 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_15_ocdbt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776897433.6682343, 'wait_for_prev_duration_secs': 6.699562072753906e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776897433.670075, 'checkpointer_blocking_duration_secs': 1.021061658859253, 'get_old_steps_start_time': 1776897434.69116, 'get_old_steps_duration_secs': 3.0279159545898438e-05, 'checkpoint_manager_blocking_start_time': 1776897433.6661575, 'checkpoint_manager_blocking_duration_secs': 1.0375325679779053}
I0422 22:37:14.703834 136610221795136 checkpointing.py:408] Started an asynchronous checkpoint save for step 0
I0422 22:37:14.703883 136610221795136 max_utils.py:750] 
Memstats: After params initialized:
I0422 22:37:14.703932 136610221795136 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_24(process=6,(0,6,0,0))
I0422 22:37:14.703965 136610221795136 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_25(process=6,(1,6,0,0))
I0422 22:37:14.703992 136610221795136 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_28(process=6,(0,7,0,0))
I0422 22:37:14.704018 136610221795136 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_29(process=6,(1,7,0,0))
I0422 22:37:15.017613 136610221795136 metric_logger.py:196] completed step: 0, seconds: 11.194, TFLOP/s/device: 1.214, Tokens/s/device: 182.957, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0422 22:37:15.222950 136610221795136 metric_logger.py:196] completed step: 1, seconds: 1.630, TFLOP/s/device: 8.337, Tokens/s/device: 1256.605, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0422 22:37:15.670739 136610221795136 metric_logger.py:196] completed step: 2, seconds: 0.058, TFLOP/s/device: 234.828, Tokens/s/device: 35395.783, total_weights: 65536, loss: 10.560, lm_loss: 10.560, perplexity: 38547.719
I0422 22:37:15.817812 136610221795136 metric_logger.py:196] completed step: 3, seconds: 0.448, TFLOP/s/device: 30.342, Tokens/s/device: 4573.521, total_weights: 65536, loss: 9.980, lm_loss: 9.980, perplexity: 21590.506
I0422 22:37:15.822445 136610221795136 checkpointing.py:772] Waiting for step 5 to finish before checkpoint...
I0422 22:37:16.112117 136610221795136 checkpointing.py:776] Waited 0.28961753845214844 seconds for step 5 to finish before starting checkpointing.
I0422 22:37:16.115045 136610221795136 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0422 22:37:18.984952    2820 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0422 22:37:20.939380 136479191848704 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_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_15_ocdbt_false/checkpoints/0/items/array_metadatas/process_6
I0422 22:37:26.139017 136481330521856 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 134.645 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 11.731565475463867 s) (per-host)
I0422 22:37:26.139139 136481330521856 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 11.447471s.
I0422 22:37:33.685967 136481330521856 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 18.994283s.
I0422 22:37:33.686264 136479183456000 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save.
I0422 22:37:33.686385 136479183456000 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save.
I0422 22:37:33.686436 136479183456000 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0422 22:37:33.689324 136479183456000 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0422 22:37:33.689519 136610221795136 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.
W0422 22:37:33.689650 136610221795136 checkpoint_manager.py:1452] Waiting for previous save to complete took 17.574604 seconds. If this number is high, consider checkpointing less frequently.
I0422 22:37:33.691887 136610221795136 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 5
I0422 22:37:33.694483 136610221795136 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_15_ocdbt_false/checkpoints/5.
I0422 22:37:34.406132 136610221795136 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0422 22:37:34.406230 136610221795136 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
I0422 22:37:34.441194 136610221795136 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.036239s
I0422 22:37:34.441360 136610221795136 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 38.914 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.039640188217163086 s) (per-host)
I0422 22:37:34.441410 136610221795136 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.039699s (batch_requests_ready=0.001773s, total_serialization_initiated=0.037861s, others=0.000064s)
I0422 22:37:34.441496 136610221795136 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.044724s (all_items=0.000016s, per_item={'items': '0.00001597'}, temp_paths=0.044708)
I0422 22:37:34.442185 136610221795136 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.75 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_15_ocdbt_false/checkpoints/5.
I0422 22:37:34.442517 136480832362240 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 22:57:34.442473
I0422 22:37:34.448607 136610221795136 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=5] Starting CheckpointManager Save Finalize thread=save_finalize
I0422 22:37:34.448822 136479183456000 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save.
I0422 22:37:34.448939 136610221795136 standard_logger.py:34] {'step': 5, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_15_ocdbt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776897436.1150138, 'wait_for_prev_duration_secs': 17.574604272842407, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776897453.6919253, 'checkpointer_blocking_duration_secs': 0.750739574432373, 'get_old_steps_start_time': 1776897454.442687, 'get_old_steps_duration_secs': 2.86102294921875e-05, 'checkpoint_manager_blocking_start_time': 1776897436.1127326, 'checkpoint_manager_blocking_duration_secs': 18.336172103881836}
I0422 22:37:34.449052 136610221795136 checkpointing.py:408] Started an asynchronous checkpoint save for step 5
I0422 22:37:34.449835 136610221795136 metric_logger.py:196] completed step: 4, seconds: 0.153, TFLOP/s/device: 88.563, Tokens/s/device: 13349.238, total_weights: 65536, loss: 9.460, lm_loss: 9.460, perplexity: 12840.355
I0422 22:37:34.455995 136610221795136 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.338, Tokens/s/device: 13918.244, total_weights: 65536, loss: 8.959, lm_loss: 8.959, perplexity: 7776.467
I0422 22:37:40.557753 136479191848704 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_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_15_ocdbt_false/checkpoints/5/items/array_metadatas/process_6
I0422 22:37:45.259938 136480832362240 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 145.475 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 10.858187198638916 s) (per-host)
I0422 22:37:45.260046 136480832362240 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 10.817416s.
I0422 22:37:51.805397 136480832362240 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 17.362751s.
I0422 22:37:51.805655 136479183456000 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save.
I0422 22:37:51.805731 136479183456000 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save.
I0422 22:37:51.805776 136479183456000 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=5] CheckpointManager Save Finalize is syncing with other hosts...
I0422 22:37:51.807379 136479183456000 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=5] CheckpointManager Save Finalize is done on all hosts.
I0422 22:37:57.260670 136610221795136 metric_logger.py:196] completed step: 6, seconds: 18.632, TFLOP/s/device: 0.729, Tokens/s/device: 109.918, total_weights: 65536, loss: 8.469, lm_loss: 8.469, perplexity: 4762.740
I0422 22:37:57.408088 136610221795136 metric_logger.py:196] completed step: 7, seconds: 22.659, TFLOP/s/device: 0.600, Tokens/s/device: 90.384, total_weights: 65536, loss: 8.003, lm_loss: 8.003, perplexity: 2989.151
I0422 22:37:57.555521 136610221795136 metric_logger.py:196] completed step: 8, seconds: 0.152, TFLOP/s/device: 89.338, Tokens/s/device: 13466.065, total_weights: 65536, loss: 7.572, lm_loss: 7.572, perplexity: 1943.098
I0422 22:37:57.702334 136610221795136 checkpointing.py:772] Waiting for step 9 to finish before checkpoint...
I0422 22:37:57.702974 136610221795136 checkpointing.py:776] Waited 0.0006611347198486328 seconds for step 9 to finish before starting checkpointing.
I0422 22:37:57.705291 136610221795136 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0422 22:37:57.707954 136610221795136 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 9
I0422 22:37:57.709412 136610221795136 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_15_ocdbt_false/checkpoints/9.
I0422 22:37:58.419775 136610221795136 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0422 22:37:58.419859 136610221795136 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
I0422 22:37:58.456961 136610221795136 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.038040s
I0422 22:37:58.457139 136610221795136 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 37.219 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04144549369812012 s) (per-host)
I0422 22:37:58.457192 136610221795136 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.041509s (batch_requests_ready=0.001638s, total_serialization_initiated=0.039803s, others=0.000069s)
I0422 22:37:58.457281 136610221795136 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.045675s (all_items=0.000010s, per_item={'items': '0.00000978'}, temp_paths=0.045665)
I0422 22:37:58.457981 136610221795136 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.75 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_15_ocdbt_false/checkpoints/9.
I0422 22:37:58.458310 136479183456000 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 22:57:58.458275
I0422 22:37:58.460287 136610221795136 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0422 22:37:58.460585 136480294954752 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save.
I0422 22:37:58.460719 136610221795136 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_15_ocdbt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776897477.70526, 'wait_for_prev_duration_secs': 7.43865966796875e-05, 'time_between_consecutive_saves_sec': 5.897775411605835, 'checkpointer_blocking_start_time': 1776897477.707997, 'checkpointer_blocking_duration_secs': 0.7504158020019531, 'get_old_steps_start_time': 1776897478.4584289, 'get_old_steps_duration_secs': 2.4557113647460938e-05, 'checkpoint_manager_blocking_start_time': 1776897477.7032266, 'checkpoint_manager_blocking_duration_secs': 0.7574608325958252}
I0422 22:37:58.460890 136610221795136 checkpointing.py:408] Started an asynchronous checkpoint save for step 9
I0422 22:37:58.460939 136610221795136 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0422 22:38:05.730926 136459369555712 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_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_15_ocdbt_false/checkpoints/9/items/array_metadatas/process_6
I0422 22:38:09.828135 136479183456000 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 138.411 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 11.412384986877441 s) (per-host)
I0422 22:38:09.828258 136479183456000 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 11.369347s.
I0422 22:38:15.578236 136479183456000 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 17.119308s.
I0422 22:38:15.578551 136480294954752 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save.
I0422 22:38:15.578670 136480294954752 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save.
I0422 22:38:15.578714 136480294954752 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0422 22:38:15.579956 136480294954752 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0422 22:38:15.580160 136610221795136 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.
I0422 22:38:15.580325 136610221795136 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0422 22:38:15.581335 136610221795136 metric_logger.py:196] completed step: 9, seconds: 0.147, TFLOP/s/device: 92.232, Tokens/s/device: 13902.277, 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: Wed Apr 22 22:38:25 UTC 2026
EXIT_CODE=0