MaxView

XPK Start: Tue Apr 21 16:50:46 UTC 2026
PyTorch was not found. Models won't be available and only tokenizers, configuration and file/data utilities can be used.
2026-04-21 16:51:10.933577: E external/local_xla/xla/stream_executor/cuda/cuda_platform.cc:51] failed call to cuInit: INTERNAL: CUDA error: Failed call to cuInit: UNKNOWN ERROR (303)
I0421 16:51:11.114187 138589415274304 max_utils.py:273] Attempting to initialize the jax distributed system...
I0421 16:51:20.154231 138589415274304 distributed.py:149] Starting JAX distributed service on [::]:8482
I0421 16:51:20.156637 138589415274304 distributed.py:172] Connecting to JAX distributed service on mt-06-grad-accum-h6zo2-slice-job-0-0.mt-06-grad-accum-h6zo2:8482
I0421 16:51:21.021737 138589415274304 max_utils.py:284] Jax distributed system initialized!
I0421 16:51:27.064413 138589415274304 max_utils.py:800] System Information: Jax Version: 0.9.2
I0421 16:51:27.064516 138589415274304 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0421 16:51:27.064555 138589415274304 max_utils.py:802] System Information: Jax Backend: PJRT C API
TFRT TPU v6 lite
Built on Mar 4 2026 11:32:08 (1772652728) cl/878335365
I0421 16:51:27.064589 138589415274304 train_utils.py:378] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0421 16:51:27.758779 138589415274304 maxtext_utils.py:1718] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0421 16:51:27.759375 138589415274304 maxtext_utils.py:1718] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0421 16:51:27.759556 138589415274304 checkpointing.py:688] Setting up checkpoint logger...
I0421 16:51:27.759607 138589415274304 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True
I0421 16:51:27.759649 138589415274304 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0421 16:51:27.760006 138589415274304 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 0x7e0b3e518b30>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0421 16:51:31.045036 138589415274304 checkpointing.py:266] Enabling policy for fixed interval checkpointing.
I0421 16:51:31.045305 138589415274304 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 0x7df7080b72f0>}, handler_registry=None
I0421 16:51:31.045542 138589415274304 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7df7080b72f0>` for item "items" and save args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>` to `_handler_registry`.
I0421 16:51:31.045593 138589415274304 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7df7080bbe30>` for item "metrics" and save args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>` to `_handler_registry`.
I0421 16:51:31.045629 138589415274304 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 0x7df7080b72f0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7df7080b72f0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7df7080bbe30>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7df7080bbe30>}).
I0421 16:51:31.045967 138589415274304 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0421 16:51:31.046039 138589415274304 async_checkpointer.py:192] [process=3][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7df6004742c0> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0421 16:51:32.107218 138589415274304 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900/linen_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900_06_grad_accum/checkpoints
I0421 16:51:32.569177 138589415274304 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=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_feat_nnx_trainstate_and_training_loop_20260421_161900/linen_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900_06_grad_accum/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7df7080b8950>
I0421 16:51:32.569346 138589415274304 checkpointing.py:302] Checkpoint manager created!
I0421 16:51:34.272562 138589415274304 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0421 16:51:34.272664 138589415274304 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0421 16:51:34.655366 138589415274304 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0421 16:51:34.655454 138589415274304 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0421 16:51:34.672442 138589415274304 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0421 16:51:34.672502 138589415274304 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0421 16:51:34.696737 138589415274304 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0421 16:51:34.696807 138589415274304 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0421 16:51:34.713790 138589415274304 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0421 16:51:34.713851 138589415274304 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0421 16:51:34.730777 138589415274304 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0421 16:51:34.730836 138589415274304 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0421 16:51:34.755940 138589415274304 attentions.py:1197] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0421 16:51:34.756015 138589415274304 attentions.py:1197] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0421 16:51:34.776892 138589415274304 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0421 16:51:34.776967 138589415274304 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0421 16:51:34.990676 138589415274304 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint
I0421 16:51:34.990786 138589415274304 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0421 16:51:36.413953 138589415274304 maxtext_utils.py:1821]  params/params/decoder/decoder_norm/scale
    Shape:     float32[2048]
    Logical:   P('norm',)
    Physical:  (None,)
I0421 16:51:36.414078 138589415274304 maxtext_utils.py:1821]  params/params/decoder/layers/mlp/wi_0/kernel
    Shape:     float32[2048,16,7168]
    Logical:   P('embed', 'layers', 'mlp')
    Physical:  ('fsdp', None, None)
I0421 16:51:36.414130 138589415274304 maxtext_utils.py:1821]  params/params/decoder/layers/mlp/wi_1/kernel
    Shape:     float32[2048,16,7168]
    Logical:   P('embed', 'layers', 'mlp')
    Physical:  ('fsdp', None, None)
I0421 16:51:36.414201 138589415274304 maxtext_utils.py:1821]  params/params/decoder/layers/mlp/wo/kernel
    Shape:     float32[7168,16,2048]
    Logical:   P('mlp', 'layers', 'embed')
    Physical:  (None, None, 'fsdp')
I0421 16:51:36.414257 138589415274304 maxtext_utils.py:1821]  params/params/decoder/layers/post_self_attention_layer_norm/scale
    Shape:     float32[2048,16]
    Logical:   P('norm', 'layers')
    Physical:  (None, None)
I0421 16:51:36.414295 138589415274304 maxtext_utils.py:1821]  params/params/decoder/layers/pre_self_attention_layer_norm/scale
    Shape:     float32[2048,16]
    Logical:   P('norm', 'layers')
    Physical:  (None, None)
I0421 16:51:36.414346 138589415274304 maxtext_utils.py:1821]  params/params/decoder/layers/self_attention/key/kernel
    Shape:     float32[2048,16,16,128]
    Logical:   P('embed', 'layers', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None, None)
I0421 16:51:36.414397 138589415274304 maxtext_utils.py:1821]  params/params/decoder/layers/self_attention/out/kernel
    Shape:     float32[16,16,128,2048]
    Logical:   P('heads', 'layers', 'kv', 'embed')
    Physical:  (None, None, None, 'fsdp')
I0421 16:51:36.414436 138589415274304 maxtext_utils.py:1821]  params/params/decoder/layers/self_attention/query/kernel
    Shape:     float32[2048,16,16,128]
    Logical:   P('embed', 'layers', 'q_heads', 'kv')
    Physical:  ('fsdp', None, None, None)
I0421 16:51:36.414481 138589415274304 maxtext_utils.py:1821]  params/params/decoder/layers/self_attention/value/kernel
    Shape:     float32[2048,16,16,128]
    Logical:   P('embed', 'layers', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None, None)
I0421 16:51:36.414530 138589415274304 maxtext_utils.py:1821]  params/params/decoder/logits_dense/kernel
    Shape:     float32[2048,32000]
    Logical:   P('embed_vocab', 'vocab')
    Physical:  ('fsdp', None)
I0421 16:51:36.414576 138589415274304 maxtext_utils.py:1821]  params/params/token_embedder/embedding

    Shape:     float32[32000,2048]
    Logical:   P('vocab', 'embed_vocab')
    Physical:  (None, 'fsdp')
I0421 16:51:36.437453 138589415274304 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[2048]............................................... Unknown.
I0421 16:51:36.437521 138589415274304 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[2048]............................................... (None,).
I0421 16:51:36.452284 138589415274304 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[2048,16,7168]....................................... Unknown.
I0421 16:51:36.452342 138589415274304 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[2048,16,7168]....................................... ('fsdp', None, None).
I0421 16:51:36.481797 138589415274304 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[7168,16,2048]....................................... Unknown.
I0421 16:51:36.481861 138589415274304 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[7168,16,2048]....................................... (None, None, 'fsdp').
I0421 16:51:36.496787 138589415274304 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[2048,16]............................................ Unknown.
I0421 16:51:36.496844 138589415274304 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[2048,16]............................................ (None, None).
I0421 16:51:36.526350 138589415274304 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[2048,16,16,128]..................................... Unknown.
I0421 16:51:36.526416 138589415274304 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[2048,16,16,128]..................................... ('fsdp', None, None, None).
I0421 16:51:36.541210 138589415274304 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[16,16,128,2048]..................................... Unknown.
I0421 16:51:36.541266 138589415274304 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[16,16,128,2048]..................................... (None, None, None, 'fsdp').
I0421 16:51:36.585420 138589415274304 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[2048,32000]......................................... Unknown.
I0421 16:51:36.585498 138589415274304 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[2048,32000]......................................... ('fsdp', None).
I0421 16:51:36.600251 138589415274304 gradient_accumulation.py:70] gradient_accumulation/inputs Logical: float32[32000,2048]......................................... Unknown.
I0421 16:51:36.600308 138589415274304 gradient_accumulation.py:70] gradient_accumulation/inputs Physical: float32[32000,2048]......................................... (None, 'fsdp').
I0421 16:51:37.271152 138589415274304 train.py:157] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0421 16:51:37.271247 138589415274304 train.py:157] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0421 16:51:37.287033 138589415274304 train.py:164] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0421 16:51:37.287093 138589415274304 train.py:164] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0421 16:51:48.337652 138589415274304 max_utils.py:791] Total memory size: 1.7 GB, Output size: 0.4 GB, Temp size: 1.3 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB.
I0421 16:51:48.338483 138589415274304 metric_logger.py:301] number parameters: 1.104 billion
I0421 16:51:50.221182 138589415274304 checkpointing.py:794] Waiting for step 0 to finish before checkpoint...
I0421 16:52:01.375048 138589415274304 checkpointing.py:798] Waited 11.153842210769653 seconds for step 0 to finish before starting checkpointing.
I0421 16:52:01.377402 138589415274304 checkpoint_manager.py:2009] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0421 16:52:01.379225 138589415274304 checkpoint_manager.py:1512] [process=3] Saving checkpoint at step 0
I0421 16:52:01.380679 138589415274304 event_tracking.py:70] [process=3] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900/linen_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900_06_grad_accum/checkpoints/0.
I0421 16:52:02.114094 138589415274304 signaling_client.py:364] Using JaxDistributedSignalingClient
I0421 16:52:02.115085 138589415274304 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0421 16:52:02.115142 138589415274304 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False
I0421 16:52:02.387369 138589415274304 base_pytree_checkpoint_handler.py:154] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.273345s
I0421 16:52:02.387552 138589415274304 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/blocking_gbytes_per_sec: 5.533 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2788119316101074 s) (per-host)
I0421 16:52:02.387603 138589415274304 base_pytree_checkpoint_handler.py:768] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.278873s (batch_requests_ready=0.002312s, total_serialization_initiated=0.276492s, others=0.000069s)
I0421 16:52:02.387687 138589415274304 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.283005s (all_items=0.000018s, per_item={'items': '0.00001764'}, temp_paths=0.282987)
I0421 16:52:02.388449 138589415274304 event_tracking.py:125] [process=3] [async] Finished blocking save in 1.01 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900/linen_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900_06_grad_accum/checkpoints/0.
I0421 16:52:02.388759 138460749977344 async_checkpointer.py:76] [process=3][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-21 17:12:02.388721
I0421 16:52:02.403425 138589415274304 checkpoint_manager.py:1560] [process=3][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0421 16:52:02.403710 138459670898432 async_checkpointer.py:280] [process=3][thread=save_finalize] Waiting for background save thread=async_save.
I0421 16:52:02.403837 138589415274304 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900/linen_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900_06_grad_accum/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776790321.377384, 'wait_for_prev_duration_secs': 6.246566772460938e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776790321.3792653, 'checkpointer_blocking_duration_secs': 1.0096449851989746, 'get_old_steps_start_time': 1776790322.388944, 'get_old_steps_duration_secs': 3.0994415283203125e-05, 'checkpoint_manager_blocking_start_time': 1776790321.3755457, 'checkpoint_manager_blocking_duration_secs': 1.0282514095306396}
I0421 16:52:02.403953 138589415274304 checkpointing.py:409] Started an asynchronous checkpoint save for step 0
I0421 16:52:02.404005 138589415274304 max_utils.py:750] 
Memstats: After params initialized:
I0421 16:52:02.404057 138589415274304 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_10(process=3,(2,2,0,0))
I0421 16:52:02.404090 138589415274304 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_11(process=3,(3,2,0,0))
I0421 16:52:02.404117 138589415274304 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_14(process=3,(2,3,0,0))
I0421 16:52:02.404143 138589415274304 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_15(process=3,(3,3,0,0))
I0421 16:52:02.714946 138589415274304 metric_logger.py:196] completed step: 0, seconds: 1.883, TFLOP/s/device: 28.869, Tokens/s/device: 4351.443, total_weights: 262144, loss: 10.877, lm_loss: 10.877, perplexity: 52959.059
I0421 16:52:03.336591 138589415274304 metric_logger.py:196] completed step: 1, seconds: 12.492, TFLOP/s/device: 4.351, Tokens/s/device: 655.767, total_weights: 262144, loss: 10.877, lm_loss: 10.877, perplexity: 52959.059
I0421 16:52:03.914669 138589415274304 metric_logger.py:196] completed step: 2, seconds: 0.044, TFLOP/s/device: 1243.218, Tokens/s/device: 187391.344, total_weights: 262144, loss: 10.563, lm_loss: 10.563, perplexity: 38662.707
I0421 16:52:04.492868 138589415274304 metric_logger.py:196] completed step: 3, seconds: 0.584, TFLOP/s/device: 92.993, Tokens/s/device: 14016.957, total_weights: 262144, loss: 10.272, lm_loss: 10.272, perplexity: 28909.668
I0421 16:52:05.414609    2635 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0421 16:52:05.649316 138589415274304 metric_logger.py:196] completed step: 4, seconds: 0.578, TFLOP/s/device: 94.015, Tokens/s/device: 14170.926, total_weights: 262144, loss: 10.022, lm_loss: 10.022, perplexity: 22524.992
I0421 16:52:05.656126 138589415274304 metric_logger.py:196] completed step: 5, seconds: 0.578, TFLOP/s/device: 93.997, Tokens/s/device: 14168.181, total_weights: 262144, loss: 9.820, lm_loss: 9.820, perplexity: 18401.865
I0421 16:52:07.430664 138459679291136 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_trainstate_and_training_loop_20260421_161900/linen_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900_06_grad_accum/checkpoints/0/items/array_metadatas/process_3
I0421 16:52:39.951449 138460749977344 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/gbytes_per_sec: 41.741 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 37.84266996383667 s) (per-host)
I0421 16:52:39.951575 138460749977344 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 37.562708s.
I0421 16:52:49.157372 138460749977344 async_checkpointer.py:160] [process=3][thread=async_save] Background save thread done. Time taken: 46.768488s.
I0421 16:52:49.157677 138459670898432 async_checkpointer.py:288] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save.
I0421 16:52:49.157814 138459670898432 async_checkpointer.py:298] [process=3][thread=save_finalize] No errors found in background save thread=async_save.
I0421 16:52:49.157866 138459670898432 checkpoint_manager.py:2137] [process=3][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0421 16:52:49.159392 138459670898432 checkpoint_manager.py:2146] [process=3][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0421 16:52:52.552396 138589415274304 metric_logger.py:196] completed step: 6, seconds: 1.157, TFLOP/s/device: 46.971, Tokens/s/device: 7080.031, total_weights: 262144, loss: 9.667, lm_loss: 9.667, perplexity: 15787.604
I0421 16:52:53.130861 138589415274304 metric_logger.py:196] completed step: 7, seconds: 46.319, TFLOP/s/device: 1.173, Tokens/s/device: 176.860, total_weights: 262144, loss: 9.561, lm_loss: 9.561, perplexity: 14203.827
I0421 16:52:53.708700 138589415274304 metric_logger.py:196] completed step: 8, seconds: 0.583, TFLOP/s/device: 93.235, Tokens/s/device: 14053.435, total_weights: 262144, loss: 9.496, lm_loss: 9.496, perplexity: 13302.920
I0421 16:52:54.286162 138589415274304 checkpointing.py:794] Waiting for step 9 to finish before checkpoint...
I0421 16:52:54.286838 138589415274304 checkpointing.py:798] Waited 0.0006988048553466797 seconds for step 9 to finish before starting checkpointing.
I0421 16:52:54.288906 138589415274304 checkpoint_manager.py:2009] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0421 16:52:54.290503 138589415274304 checkpoint_manager.py:1512] [process=3] Saving checkpoint at step 9
I0421 16:52:54.292008 138589415274304 event_tracking.py:70] [process=3] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900/linen_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900_06_grad_accum/checkpoints/9.
I0421 16:52:55.005103 138589415274304 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0421 16:52:55.005191 138589415274304 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False
I0421 16:52:55.039648 138589415274304 base_pytree_checkpoint_handler.py:154] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.035434s
I0421 16:52:55.039812 138589415274304 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/blocking_gbytes_per_sec: 39.579 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.03897428512573242 s) (per-host)
I0421 16:52:55.039863 138589415274304 base_pytree_checkpoint_handler.py:768] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.039035s (batch_requests_ready=0.001776s, total_serialization_initiated=0.037192s, others=0.000067s)
I0421 16:52:55.039963 138589415274304 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.043354s (all_items=0.000016s, per_item={'items': '0.00001574'}, temp_paths=0.043338)
I0421 16:52:55.040696 138589415274304 event_tracking.py:125] [process=3] [async] Finished blocking save in 0.75 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900/linen_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900_06_grad_accum/checkpoints/9.
I0421 16:52:55.040994 138459670898432 async_checkpointer.py:76] [process=3][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-21 17:12:55.040963
I0421 16:52:55.042913 138589415274304 checkpoint_manager.py:1560] [process=3][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0421 16:52:55.043194 138460741584640 async_checkpointer.py:280] [process=3][thread=save_finalize] Waiting for background save thread=async_save.
I0421 16:52:55.043327 138589415274304 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900/linen_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900_06_grad_accum/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776790374.2888732, 'wait_for_prev_duration_secs': 8.416175842285156e-05, 'time_between_consecutive_saves_sec': 5.129438877105713, 'checkpointer_blocking_start_time': 1776790374.2905407, 'checkpointer_blocking_duration_secs': 0.7505919933319092, 'get_old_steps_start_time': 1776790375.0411556, 'get_old_steps_duration_secs': 2.86102294921875e-05, 'checkpoint_manager_blocking_start_time': 1776790374.2870781, 'checkpoint_manager_blocking_duration_secs': 0.7562155723571777}
I0421 16:52:55.043484 138589415274304 checkpointing.py:409] Started an asynchronous checkpoint save for step 9
I0421 16:52:55.043530 138589415274304 checkpoint_manager.py:2020] [process=3][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0421 16:53:00.121774 138465031214848 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_trainstate_and_training_loop_20260421_161900/linen_xpk_feat_nnx_trainstate_and_training_loop_20260421_161900_06_grad_accum/checkpoints/9/items/array_metadatas/process_3
I0421 16:53:37.934267 138459670898432 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/gbytes_per_sec: 36.792 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.933391094207764 s) (per-host)
I0421 16:53:37.934392 138459670898432 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.893284s.
I0421 16:53:45.743065 138459670898432 async_checkpointer.py:160] [process=3][thread=async_save] Background save thread done. Time taken: 50.701942s.
I0421 16:53:45.743369 138460741584640 async_checkpointer.py:288] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save.
I0421 16:53:45.743493 138460741584640 async_checkpointer.py:298] [process=3][thread=save_finalize] No errors found in background save thread=async_save.
I0421 16:53:45.743551 138460741584640 checkpoint_manager.py:2137] [process=3][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0421 16:53:45.745261 138460741584640 checkpoint_manager.py:2146] [process=3][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0421 16:53:45.745463 138589415274304 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.
I0421 16:53:45.745614 138589415274304 checkpoint_manager.py:2009] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0421 16:53:45.746542 138589415274304 metric_logger.py:196] completed step: 9, seconds: 0.578, TFLOP/s/device: 93.980, Tokens/s/device: 14165.707, total_weights: 262144, loss: 9.457, lm_loss: 9.457, perplexity: 12802.546
Per train step:
 Total TFLOPs: 54.35 
 split as 93.93% learnable weight flops and 6.07% attention flops
XPK End: Tue Apr 21 16:53:57 UTC 2026
EXIT_CODE=0