MaxView

XPK Start: Thu Apr 23 13:56:09 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. 
2026-04-23 13:56:34.706911: 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)
I0423 13:56:34.918933 132816453080896 max_utils.py:273] Attempting to initialize the jax distributed system...
I0423 13:56:43.959080 132816453080896 distributed.py:149] Starting JAX distributed service on [::]:8482
I0423 13:56:43.961531 132816453080896 distributed.py:172] Connecting to JAX distributed service on mt-15-ocdbt-false-sv-auqvv-slice-job-0-0.mt-15-ocdbt-false-sv-auqvv:8482
I0423 13:56:44.975193 132816453080896 max_utils.py:284] Jax distributed system initialized!
I0423 13:56:51.072948 132816453080896 max_utils.py:800] System Information: Jax Version: 0.9.2
I0423 13:56:51.073052 132816453080896 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0423 13:56:51.073092 132816453080896 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
I0423 13:56:51.073127 132816453080896 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0423 13:56:51.775915 132816453080896 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0423 13:56:51.776531 132816453080896 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0423 13:56:51.776721 132816453080896 checkpointing.py:688] Setting up checkpoint logger...
I0423 13:56:51.776775 132816453080896 checkpointing.py:234] Creating checkpoint manager with ocdbt=False and zarr3=True
I0423 13:56:51.776818 132816453080896 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0423 13:56:51.777174 132816453080896 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 0x78cb2411cda0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0423 13:56:54.702532 132816453080896 checkpointing.py:266] Enabling policy for fixed interval checkpointing.
I0423 13:56:54.702775 132816453080896 checkpoint_manager.py:708] [process=3][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x78b6e8389d00>}, handler_registry=None
I0423 13:56:54.703026 132816453080896 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x78b6e8389d00>` 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`.
I0423 13:56:54.703077 132816453080896 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x78b6e838c6b0>` 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`.
I0423 13:56:54.703114 132816453080896 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 0x78b6e8389d00>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x78b6e8389d00>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x78b6e838c6b0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x78b6e838c6b0>}).
I0423 13:56:54.703444 132816453080896 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0423 13:56:54.703514 132816453080896 async_checkpointer.py:192] [process=3][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x78b6e81c9e40> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0423 13:56:56.031993 132816453080896 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_15_ocdbt_false/checkpoints
I0423 13:56:56.041507 132816453080896 checkpoint_manager.py:929] [process=3][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_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_15_ocdbt_false/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x78b6e838b140>
I0423 13:56:56.041629 132816453080896 checkpointing.py:302] Checkpoint manager created!
I0423 13:56:56.971252 132816453080896 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0423 13:56:56.971361 132816453080896 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0423 13:56:57.353807 132816453080896 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0423 13:56:57.353903 132816453080896 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0423 13:56:57.370675 132816453080896 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0423 13:56:57.370736 132816453080896 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0423 13:56:57.395138 132816453080896 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0423 13:56:57.395206 132816453080896 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0423 13:56:57.412013 132816453080896 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0423 13:56:57.412085 132816453080896 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0423 13:56:57.428977 132816453080896 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0423 13:56:57.429040 132816453080896 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0423 13:56:57.454619 132816453080896 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0423 13:56:57.454688 132816453080896 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0423 13:56:57.476163 132816453080896 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0423 13:56:57.476228 132816453080896 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0423 13:56:57.696526 132816453080896 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint
I0423 13:56:57.696633 132816453080896 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0423 13:56:59.131804 132816453080896 maxtext_utils.py:1880]  params/params/decoder/decoder_norm/scale
    Shape:     float32[2048]
    Logical:   P('norm',)
    Physical:  (None,)
I0423 13:56:59.131947 132816453080896 maxtext_utils.py:1880]  params/params/decoder/layers/mlp/wi_0/kernel
    Shape:     float32[2048,16,7168]
    Logical:   P('embed', 'layers', 'mlp')
    Physical:  ('fsdp', None, None)
I0423 13:56:59.132005 132816453080896 maxtext_utils.py:1880]  params/params/decoder/layers/mlp/wi_1/kernel
    Shape:     float32[2048,16,7168]
    Logical:   P('embed', 'layers', 'mlp')
    Physical:  ('fsdp', None, None)
I0423 13:56:59.132064 132816453080896 maxtext_utils.py:1880]  params/params/decoder/layers/mlp/wo/kernel
    Shape:     float32[7168,16,2048]
    Logical:   P('mlp', 'layers', 'embed')
    Physical:  (None, None, 'fsdp')
I0423 13:56:59.132118 132816453080896 maxtext_utils.py:1880]  params/params/decoder/layers/post_self_attention_layer_norm/scale
    Shape:     float32[2048,16]
    Logical:   P('norm', 'layers')
    Physical:  (None, None)
I0423 13:56:59.132163 132816453080896 maxtext_utils.py:1880]  params/params/decoder/layers/pre_self_attention_layer_norm/scale
    Shape:     float32[2048,16]
    Logical:   P('norm', 'layers')
    Physical:  (None, None)
I0423 13:56:59.132216 132816453080896 maxtext_utils.py:1880]  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)
I0423 13:56:59.132269 132816453080896 maxtext_utils.py:1880]  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')
I0423 13:56:59.132308 132816453080896 maxtext_utils.py:1880]  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)
I0423 13:56:59.132345 132816453080896 maxtext_utils.py:1880]  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)
I0423 13:56:59.132392 132816453080896 maxtext_utils.py:1880]  params/params/decoder/logits_dense/kernel
    Shape:     float32[2048,32000]
    Logical:   P('embed_vocab', 'vocab')
    Physical:  ('fsdp', None)

I0423 13:56:59.132445 132816453080896 maxtext_utils.py:1880]  params/params/token_embedder/embedding
    Shape:     float32[32000,2048]
    Logical:   P('vocab', 'embed_vocab')
    Physical:  (None, 'fsdp')
I0423 13:56:59.626501 132816453080896 train.py:157] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0423 13:56:59.626594 132816453080896 train.py:157] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0423 13:56:59.642208 132816453080896 train.py:164] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0423 13:56:59.642268 132816453080896 train.py:164] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0423 13:57:10.599140 132816453080896 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.
I0423 13:57:10.600039 132816453080896 metric_logger.py:301] number parameters: 1.104 billion
I0423 13:57:22.433167 132816453080896 checkpointing.py:794] Waiting for step 0 to finish before checkpoint...
I0423 13:57:22.586005 132816453080896 checkpointing.py:798] Waited 0.15282082557678223 seconds for step 0 to finish before starting checkpointing.
I0423 13:57:22.588468 132816453080896 checkpoint_manager.py:2009] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0423 13:57:22.592043 132816453080896 checkpoint_manager.py:1512] [process=3] Saving checkpoint at step 0
I0423 13:57:22.593428 132816453080896 event_tracking.py:70] [process=3] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_15_ocdbt_false/checkpoints/0.
I0423 13:57:23.706483 132816453080896 signaling_client.py:364] Using JaxDistributedSignalingClient
I0423 13:57:23.707674 132816453080896 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0423 13:57:23.707733 132816453080896 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
I0423 13:57:23.980741 132816453080896 base_pytree_checkpoint_handler.py:154] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.274338s
I0423 13:57:23.980913 132816453080896 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/blocking_gbytes_per_sec: 2.197 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.7021822929382324 s) (per-host)
I0423 13:57:23.980998 132816453080896 base_pytree_checkpoint_handler.py:768] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.702273s (batch_requests_ready=0.424549s, total_serialization_initiated=0.277627s, others=0.000098s)
I0423 13:57:23.981122 132816453080896 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.706576s (all_items=0.000018s, per_item={'items': '0.00001788'}, temp_paths=0.706558)
I0423 13:57:23.981958 132816453080896 event_tracking.py:125] [process=3] [async] Finished blocking save in 1.39 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_15_ocdbt_false/checkpoints/0.
I0423 13:57:23.982239 132687931086592 async_checkpointer.py:76] [process=3][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 14:17:23.982208
I0423 13:57:23.993727 132816453080896 checkpoint_manager.py:1560] [process=3][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0423 13:57:23.993986 132687386076928 async_checkpointer.py:280] [process=3][thread=save_finalize] Waiting for background save thread=async_save.
I0423 13:57:23.994106 132816453080896 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_15_ocdbt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776952642.58845, 'wait_for_prev_duration_secs': 6.842613220214844e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776952642.5920827, 'checkpointer_blocking_duration_secs': 1.3902993202209473, 'get_old_steps_start_time': 1776952643.9824066, 'get_old_steps_duration_secs': 3.0994415283203125e-05, 'checkpoint_manager_blocking_start_time': 1776952642.5865319, 'checkpoint_manager_blocking_duration_secs': 1.407536506652832}
I0423 13:57:23.994209 132816453080896 checkpointing.py:409] Started an asynchronous checkpoint save for step 0
I0423 13:57:23.994259 132816453080896 max_utils.py:750] 
Memstats: After params initialized:
I0423 13:57:23.994311 132816453080896 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_10(process=3,(2,2,0,0))
I0423 13:57:23.994352 132816453080896 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_11(process=3,(3,2,0,0))
I0423 13:57:23.994382 132816453080896 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_14(process=3,(2,3,0,0))
I0423 13:57:23.994407 132816453080896 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_15(process=3,(3,3,0,0))
I0423 13:57:24.311684 132816453080896 metric_logger.py:196] completed step: 0, seconds: 11.833, TFLOP/s/device: 1.148, Tokens/s/device: 173.075, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0423 13:57:24.498743 132816453080896 metric_logger.py:196] completed step: 1, seconds: 1.877, TFLOP/s/device: 7.239, Tokens/s/device: 1091.138, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0423 13:57:24.901271 132816453080896 metric_logger.py:196] completed step: 2, seconds: 0.040, TFLOP/s/device: 341.025, Tokens/s/device: 51403.042, total_weights: 65536, loss: 10.560, lm_loss: 10.560, perplexity: 38547.719
I0423 13:57:25.048826 132816453080896 metric_logger.py:196] completed step: 3, seconds: 0.403, TFLOP/s/device: 33.748, Tokens/s/device: 5086.897, total_weights: 65536, loss: 9.980, lm_loss: 9.980, perplexity: 21590.506
I0423 13:57:25.053379 132816453080896 checkpointing.py:794] Waiting for step 5 to finish before checkpoint...
I0423 13:57:25.342626 132816453080896 checkpointing.py:798] Waited 0.28920865058898926 seconds for step 5 to finish before starting checkpointing.
I0423 13:57:25.345720 132816453080896 checkpoint_manager.py:2020] [process=3][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0423 13:57:26.676331    2834 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0423 13:57:28.697882 132687394469632 array_metadata_store.py:203] [process=3][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_15_ocdbt_false/checkpoints/0/items/array_metadatas/process_3
I0423 13:57:33.693812 132687931086592 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/gbytes_per_sec: 151.665 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 10.415042638778687 s) (per-host)
I0423 13:57:33.693956 132687931086592 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 9.711607s.
I0423 13:57:40.289868 132687931086592 async_checkpointer.py:160] [process=3][thread=async_save] Background save thread done. Time taken: 16.307503s.
I0423 13:57:40.290114 132687386076928 async_checkpointer.py:288] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save.
I0423 13:57:40.290172 132687386076928 async_checkpointer.py:298] [process=3][thread=save_finalize] No errors found in background save thread=async_save.
I0423 13:57:40.290219 132687386076928 checkpoint_manager.py:2137] [process=3][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0423 13:57:40.292845 132687386076928 checkpoint_manager.py:2146] [process=3][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0423 13:57:40.293070 132816453080896 checkpoint_manager.py:2032] [process=3][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0.
W0423 13:57:40.293205 132816453080896 checkpoint_manager.py:1452] Waiting for previous save to complete took 14.947483 seconds. If this number is high, consider checkpointing less frequently.
I0423 13:57:40.295195 132816453080896 checkpoint_manager.py:1512] [process=3] Saving checkpoint at step 5
I0423 13:57:40.297733 132816453080896 event_tracking.py:70] [process=3] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_15_ocdbt_false/checkpoints/5.
I0423 13:57:41.004124 132816453080896 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0423 13:57:41.004215 132816453080896 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
I0423 13:57:41.037636 132816453080896 base_pytree_checkpoint_handler.py:154] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.034684s
I0423 13:57:41.037803 132816453080896 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/blocking_gbytes_per_sec: 40.472 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.03811502456665039 s) (per-host)
I0423 13:57:41.037852 132816453080896 base_pytree_checkpoint_handler.py:768] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.038175s (batch_requests_ready=0.001781s, total_serialization_initiated=0.036323s, others=0.000071s)
I0423 13:57:41.037961 132816453080896 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.043393s (all_items=0.000015s, per_item={'items': '0.00001478'}, temp_paths=0.043378)
I0423 13:57:41.038611 132816453080896 event_tracking.py:125] [process=3] [async] Finished blocking save in 0.74 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_15_ocdbt_false/checkpoints/5.
I0423 13:57:41.038969 132687386076928 async_checkpointer.py:76] [process=3][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 14:17:41.038921
I0423 13:57:41.048634 132816453080896 checkpoint_manager.py:1560] [process=3][thread=MainThread][step=5] Starting CheckpointManager Save Finalize thread=save_finalize
I0423 13:57:41.048998 132687436179200 async_checkpointer.py:280] [process=3][thread=save_finalize] Waiting for background save thread=async_save.
I0423 13:57:41.049158 132816453080896 standard_logger.py:34] {'step': 5, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_15_ocdbt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776952645.3456914, 'wait_for_prev_duration_secs': 14.94748306274414, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776952660.2952325, 'checkpointer_blocking_duration_secs': 0.7438380718231201, 'get_old_steps_start_time': 1776952661.0390923, 'get_old_steps_duration_secs': 2.8133392333984375e-05, 'checkpoint_manager_blocking_start_time': 1776952645.3432226, 'checkpoint_manager_blocking_duration_secs': 15.705901384353638}
I0423 13:57:41.049268 132816453080896 checkpointing.py:409] Started an asynchronous checkpoint save for step 5
I0423 13:57:41.050038 132816453080896 metric_logger.py:196] completed step: 4, seconds: 0.153, TFLOP/s/device: 88.592, Tokens/s/device: 13353.590, total_weights: 65536, loss: 9.460, lm_loss: 9.460, perplexity: 12840.355
I0423 13:57:41.056166 132816453080896 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.218, Tokens/s/device: 13900.107, total_weights: 65536, loss: 8.959, lm_loss: 8.959, perplexity: 7776.467
I0423 13:57:46.475088 132687394469632 array_metadata_store.py:203] [process=3][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_15_ocdbt_false/checkpoints/5/items/array_metadatas/process_3
I0423 13:57:51.901888 132687386076928 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/gbytes_per_sec: 144.888 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 10.902162313461304 s) (per-host)
I0423 13:57:51.902020 132687386076928 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 10.862424s.
I0423 13:57:58.396356 132687386076928 async_checkpointer.py:160] [process=3][thread=async_save] Background save thread done. Time taken: 17.356744s.
I0423 13:57:58.396624 132687436179200 async_checkpointer.py:288] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save.
I0423 13:57:58.396749 132687436179200 async_checkpointer.py:298] [process=3][thread=save_finalize] No errors found in background save thread=async_save.
I0423 13:57:58.396796 132687436179200 checkpoint_manager.py:2137] [process=3][thread=save_finalize][step=5] CheckpointManager Save Finalize is syncing with other hosts...
I0423 13:57:58.398159 132687436179200 checkpoint_manager.py:2146] [process=3][thread=save_finalize][step=5] CheckpointManager Save Finalize is done on all hosts.
I0423 13:58:04.009137 132816453080896 metric_logger.py:196] completed step: 6, seconds: 16.001, TFLOP/s/device: 0.849, Tokens/s/device: 127.989, total_weights: 65536, loss: 8.469, lm_loss: 8.469, perplexity: 4762.740
I0423 13:58:04.156649 132816453080896 metric_logger.py:196] completed step: 7, seconds: 22.807, TFLOP/s/device: 0.596, Tokens/s/device: 89.797, total_weights: 65536, loss: 8.003, lm_loss: 8.003, perplexity: 2989.151
I0423 13:58:04.304018 132816453080896 metric_logger.py:196] completed step: 8, seconds: 0.152, TFLOP/s/device: 89.296, Tokens/s/device: 13459.693, total_weights: 65536, loss: 7.572, lm_loss: 7.572, perplexity: 1943.098
I0423 13:58:04.450999 132816453080896 checkpointing.py:794] Waiting for step 9 to finish before checkpoint...
I0423 13:58:04.451682 132816453080896 checkpointing.py:798] Waited 0.0007052421569824219 seconds for step 9 to finish before starting checkpointing.
I0423 13:58:04.453943 132816453080896 checkpoint_manager.py:2009] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0423 13:58:04.455588 132816453080896 checkpoint_manager.py:1512] [process=3] Saving checkpoint at step 9
I0423 13:58:04.456826 132816453080896 event_tracking.py:70] [process=3] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_15_ocdbt_false/checkpoints/9.
I0423 13:58:04.761214 132816453080896 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0423 13:58:04.761312 132816453080896 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
I0423 13:58:04.797045 132816453080896 base_pytree_checkpoint_handler.py:154] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.036969s
I0423 13:58:04.797209 132816453080896 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/blocking_gbytes_per_sec: 38.201 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.040380001068115234 s) (per-host)
I0423 13:58:04.797259 132816453080896 base_pytree_checkpoint_handler.py:768] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.040440s (batch_requests_ready=0.001755s, total_serialization_initiated=0.038620s, others=0.000064s)
I0423 13:58:04.797349 132816453080896 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.044447s (all_items=0.000010s, per_item={'items': '0.00001049'}, temp_paths=0.044436)
I0423 13:58:04.798033 132816453080896 event_tracking.py:125] [process=3] [async] Finished blocking save in 0.34 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_15_ocdbt_false/checkpoints/9.
I0423 13:58:04.798362 132687436179200 async_checkpointer.py:76] [process=3][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 14:18:04.798326
I0423 13:58:04.800292 132816453080896 checkpoint_manager.py:1560] [process=3][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0423 13:58:04.800503 132665122465536 async_checkpointer.py:280] [process=3][thread=save_finalize] Waiting for background save thread=async_save.
I0423 13:58:04.800616 132816453080896 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_15_ocdbt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776952684.4539015, 'wait_for_prev_duration_secs': 8.153915405273438e-05, 'time_between_consecutive_saves_sec': 6.055705308914185, 'checkpointer_blocking_start_time': 1776952684.4556258, 'checkpointer_blocking_duration_secs': 0.342881441116333, 'get_old_steps_start_time': 1776952684.7985244, 'get_old_steps_duration_secs': 2.3603439331054688e-05, 'checkpoint_manager_blocking_start_time': 1776952684.4519055, 'checkpoint_manager_blocking_duration_secs': 0.3486802577972412}
I0423 13:58:04.800719 132816453080896 checkpointing.py:409] Started an asynchronous checkpoint save for step 9
I0423 13:58:04.800771 132816453080896 checkpoint_manager.py:2020] [process=3][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0423 13:58:09.842188 132665399293696 array_metadata_store.py:203] [process=3][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_15_ocdbt_false/checkpoints/9/items/array_metadatas/process_3
I0423 13:58:15.247792 132687436179200 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/gbytes_per_sec: 150.568 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 10.490924835205078 s) (per-host)
I0423 13:58:15.247915 132687436179200 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 10.449442s.
I0423 13:58:21.540500 132687436179200 async_checkpointer.py:160] [process=3][thread=async_save] Background save thread done. Time taken: 16.742012s.
I0423 13:58:21.540725 132665122465536 async_checkpointer.py:288] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save.
I0423 13:58:21.540779 132665122465536 async_checkpointer.py:298] [process=3][thread=save_finalize] No errors found in background save thread=async_save.
I0423 13:58:21.540818 132665122465536 checkpoint_manager.py:2137] [process=3][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0423 13:58:21.542398 132665122465536 checkpoint_manager.py:2146] [process=3][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0423 13:58:21.542561 132816453080896 checkpoint_manager.py:2032] [process=3][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9.
I0423 13:58:21.542717 132816453080896 checkpoint_manager.py:2009] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0423 13:58:21.543678 132816453080896 metric_logger.py:196] completed step: 9, seconds: 0.147, TFLOP/s/device: 92.220, Tokens/s/device: 13900.390, 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: Thu Apr 23 13:58:29 UTC 2026
EXIT_CODE=0