XPK Start: Sat Apr 25 15:19:29 UTC 2026
2026-04-25 15:19:33.927019: E external/local_xla/xla/stream_executor/cuda/cuda_fft.cc:467] Unable to register cuFFT factory: Attempting to register factory for plugin cuFFT when one has already been registered
WARNING: All log messages before absl::InitializeLog() is called are written to STDERR
E0000 00:00:1777130373.939456 10 cuda_dnn.cc:8579] Unable to register cuDNN factory: Attempting to register factory for plugin cuDNN when one has already been registered
E0000 00:00:1777130373.943267 10 cuda_blas.cc:1407] Unable to register cuBLAS factory: Attempting to register factory for plugin cuBLAS when one has already been registered
W0000 00:00:1777130373.954453 10 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once.
W0000 00:00:1777130373.954471 10 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once.
W0000 00:00:1777130373.954473 10 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once.
W0000 00:00:1777130373.954475 10 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once.
2026-04-25 15:19:53.158321: E external/local_xla/xla/stream_executor/cuda/cuda_platform.cc:51] failed call to cuInit: INTERNAL: CUDA error: Failed call to cuInit: UNKNOWN ERROR (303)
I0425 15:19:53.681800 133019535910720 max_utils.py:273] Attempting to initialize the jax distributed system...
INFO:2026-04-25 15:20:02,721:jax._src.distributed:140: Starting JAX distributed service on [::]:8482
I0425 15:20:02.721856 133019535910720 distributed.py:140] Starting JAX distributed service on [::]:8482
INFO:2026-04-25 15:20:02,724:jax._src.distributed:157: Connecting to JAX distributed service on mt-07-eval-c9gni-slice-job-0-0.mt-07-eval-c9gni:8482
I0425 15:20:02.724214 133019535910720 distributed.py:157] Connecting to JAX distributed service on mt-07-eval-c9gni-slice-job-0-0.mt-07-eval-c9gni:8482
I0425 15:20:04.323141 133019535910720 max_utils.py:284] Jax distributed system initialized!
I0425 15:20:11.373933 133019535910720 max_utils.py:800] System Information: Jax Version: 0.8.1
I0425 15:20:11.374040 133019535910720 max_utils.py:801] System Information: Jaxlib Version: 0.8.1
I0425 15:20:11.374081 133019535910720 max_utils.py:802] System Information: Jax Backend: PJRT C API
TFRT TPU v6 lite
Built on Nov 12 2025 14:16:36 (1762985796) cl/831091709
I0425 15:20:11.374116 133019535910720 train_utils.py:377] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0425 15:20:11.997408 133019535910720 maxtext_utils.py:1631] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0425 15:20:11.998193 133019535910720 maxtext_utils.py:1631] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0425 15:20:11.998382 133019535910720 checkpointing.py:688] Setting up checkpoint logger...
I0425 15:20:11.998435 133019535910720 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True
I0425 15:20:11.998479 133019535910720 pytree_checkpoint_handler.py:589] save_device_host_concurrent_bytes=None
I0425 15:20:11.998860 133019535910720 base_pytree_checkpoint_handler.py:415] 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 0x78fa93d6d2b0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0425 15:20:14.905981 133019535910720 checkpointing.py:266] Enabling policy for fixed interval checkpointing.
I0425 15:20:14.906331 133019535910720 checkpoint_manager.py:709] [process=5][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x78f93c562960>}, handler_registry=None
I0425 15:20:14.906565 133019535910720 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x78f93c562960>` for item "items" and save args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>` to `_handler_registry`.
I0425 15:20:14.906614 133019535910720 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x78e6340ebda0>` for item "metrics" and save args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>` to `_handler_registry`.
I0425 15:20:14.906661 133019535910720 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 0x78f93c562960>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x78f93c562960>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x78e6340ebda0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x78e6340ebda0>}).
I0425 15:20:14.907260 133019535910720 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.33
I0425 15:20:14.907337 133019535910720 async_checkpointer.py:177] [process=5][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x78e5dc684180> timeout: 600 secs and primary_host=0 for async checkpoint writes
I0425 15:20:15.648892 133019535910720 checkpoint_manager.py:1818] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_07_eval/checkpoints
I0425 15:20:15.669369 133019535910720 checkpoint_manager.py:929] [process=5][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_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_07_eval/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x78e61c25fef0>
I0425 15:20:15.669496 133019535910720 checkpointing.py:302] Checkpoint manager created!
I0425 15:20:16.564646 133019535910720 nnx_wrappers.py:455] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0425 15:20:16.564764 133019535910720 nnx_wrappers.py:455] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0425 15:20:16.936518 133019535910720 attentions.py:1084] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0425 15:20:16.936622 133019535910720 attentions.py:1084] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0425 15:20:16.953063 133019535910720 attentions.py:1085] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0425 15:20:16.953129 133019535910720 attentions.py:1085] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0425 15:20:16.976362 133019535910720 attentions.py:1150] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0425 15:20:16.976433 133019535910720 attentions.py:1150] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 15:20:16.992709 133019535910720 attentions.py:1151] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0425 15:20:16.992770 133019535910720 attentions.py:1151] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 15:20:17.008884 133019535910720 attentions.py:1152] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0425 15:20:17.008944 133019535910720 attentions.py:1152] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 15:20:17.034145 133019535910720 attentions.py:1193] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0425 15:20:17.034220 133019535910720 attentions.py:1193] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 15:20:17.053968 133019535910720 linears.py:541] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0425 15:20:17.054039 133019535910720 linears.py:541] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0425 15:20:17.244617 133019535910720 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint
I0425 15:20:17.244744 133019535910720 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0425 15:20:18.690286 133019535910720 maxtext_utils.py:1740] params/params/decoder/decoder_norm/scale
Shape: float32[2048]
Logical: PartitionSpec('norm',)
Physical: (None,)
I0425 15:20:18.690427 133019535910720 maxtext_utils.py:1740] params/params/decoder/layers/mlp/wi_0/kernel
Shape: float32[2048,16,7168]
Logical: PartitionSpec('embed', 'layers', 'mlp')
Physical: ('fsdp', None, None)
I0425 15:20:18.690484 133019535910720 maxtext_utils.py:1740] params/params/decoder/layers/mlp/wi_1/kernel
Shape: float32[2048,16,7168]
Logical: PartitionSpec('embed', 'layers', 'mlp')
Physical: ('fsdp', None, None)
I0425 15:20:18.690545 133019535910720 maxtext_utils.py:1740] params/params/decoder/layers/mlp/wo/kernel
Shape: float32[7168,16,2048]
Logical: PartitionSpec('mlp', 'layers', 'embed')
Physical: (None, None, 'fsdp')
I0425 15:20:18.690599 133019535910720 maxtext_utils.py:1740] params/params/decoder/layers/post_self_attention_layer_norm/scale
Shape: float32[2048,16]
Logical: PartitionSpec('norm', 'layers')
Physical: (None, None)
I0425 15:20:18.690639 133019535910720 maxtext_utils.py:1740] params/params/decoder/layers/pre_self_attention_layer_norm/scale
Shape: float32[2048,16]
Logical: PartitionSpec('norm', 'layers')
Physical: (None, None)
I0425 15:20:18.690709 133019535910720 maxtext_utils.py:1740] params/params/decoder/layers/self_attention/key/kernel
Shape: float32[2048,16,16,128]
Logical: PartitionSpec('embed', 'layers', 'kv_heads', 'kv_head_dim')
Physical: ('fsdp', None, None, None)
I0425 15:20:18.690766 133019535910720 maxtext_utils.py:1740] params/params/decoder/layers/self_attention/out/kernel
Shape: float32[16,16,128,2048]
Logical: PartitionSpec('heads', 'layers', 'kv', 'embed')
Physical: (None, None, None, 'fsdp')
I0425 15:20:18.690810 133019535910720 maxtext_utils.py:1740] params/params/decoder/layers/self_attention/query/kernel
Shape: float32[2048,16,16,128]
Logical: PartitionSpec('embed', 'layers', 'q_heads', 'kv')
Physical: ('fsdp', None, None, None)
I0425 15:20:18.690851 133019535910720 maxtext_utils.py:1740] params/params/decoder/layers/self_attention/value/kernel
Shape: float32[2048,16,16,128]
Logical: PartitionSpec('embed', 'layers', 'kv_heads', 'kv_head_dim')
Physical: ('fsdp', None, None, None)
I0425 15:20:18.690904 133019535910720 maxtext_utils.py:1740] params/params/decoder/logits_dense/kernel
Shape: float32[2048,32000]
Logical: PartitionSpec('embed', 'vocab')
Physical: ('fsdp', None)
I0425 15:20:18.690959 133019535910720 maxtext_utils.py:1740] params/params/token_embedder/embedding
Shape: float32[32000,2048]
Logical: PartitionSpec('vocab', 'embed')
Physical: (None, 'fsdp')
I0425 15:20:19.195165 133019535910720 train.py:158] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0425 15:20:19.195259 133019535910720 train.py:158] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0425 15:20:19.210290 133019535910720 train.py:165] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0425 15:20:19.210350 133019535910720 train.py:165] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0425 15:20:29.906025 133019535910720 max_utils.py:791] Total memory size: 1.5 GB, Output size: 0.4 GB, Temp size: 1.1 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB.
I0425 15:20:29.906892 133019535910720 metric_logger.py:289] number parameters: 1.104 billion
I0425 15:20:41.076799 133019535910720 checkpointing.py:794] Waiting for step 0 to finish before checkpoint...
I0425 15:20:41.276606 133019535910720 checkpointing.py:798] Waited 0.19979071617126465 seconds for step 0 to finish before starting checkpointing.
I0425 15:20:41.279219 133019535910720 checkpoint_manager.py:2013] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0425 15:20:41.280909 133019535910720 checkpoint_manager.py:1518] [process=5] Saving checkpoint at step 0
I0425 15:20:41.283624 133019535910720 async_checkpointer.py:452] [process=5] Started async saving checkpoint to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_07_eval/checkpoints/0.
I0425 15:20:41.916529 133019535910720 signaling_client.py:364] Using JaxDistributedSignalingClient
I0425 15:20:41.917589 133019535910720 jax_array_handlers.py:358] Scheduling D2H of 39 prioritized jax.Array.
I0425 15:20:41.917664 133019535910720 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False
I0425 15:20:42.165854 133019535910720 base_pytree_checkpoint_handler.py:153] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.249403s
I0425 15:20:42.166024 133019535910720 base_pytree_checkpoint_handler.py:129] [process=5] /jax/checkpoint/write/blocking_gbytes_per_sec: 2.783 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.5543646812438965 s) (per-host)
I0425 15:20:42.166077 133019535910720 base_pytree_checkpoint_handler.py:737] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.554427s (batch_requests_ready=0.301291s, total_serialization_initiated=0.253065s, others=0.000072s)
I0425 15:20:42.166168 133019535910720 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.558290s (all_items=0.000019s, per_item={'items': '0.00001907'}, temp_paths=0.558270)
I0425 15:20:42.167094 132893502322432 async_checkpointer.py:79] [process=5][thread=async_save] Background save thread started.
I0425 15:20:42.167266 133019535910720 async_checkpointer.py:561] Finished blocking save. Time taken: 0.886283s. Continuing background save to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_07_eval/checkpoints/0.
I0425 15:20:42.169192 133019535910720 checkpoint_manager.py:1566] [process=5][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0425 15:20:42.169486 132893527500544 async_checkpointer.py:265] [process=5][thread=save_finalize] Waiting for background save thread=async_save.
I0425 15:20:42.169639 133019535910720 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777130441.2792, 'wait_for_prev_duration_secs': 6.270408630371094e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777130441.2809505, 'checkpointer_blocking_duration_secs': 0.886420726776123, 'get_old_steps_start_time': 1777130442.1673915, 'get_old_steps_duration_secs': 2.5033950805664062e-05, 'checkpoint_manager_blocking_start_time': 1777130441.2772331, 'checkpoint_manager_blocking_duration_secs': 0.8923680782318115}
I0425 15:20:42.169756 133019535910720 checkpointing.py:409] Started an asynchronous checkpoint save for step 0
I0425 15:20:42.169808 133019535910720 max_utils.py:750]
Memstats: After params initialized:
I0425 15:20:42.169857 133019535910720 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_18(process=5,(2,4,0,0))
I0425 15:20:42.169892 133019535910720 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_19(process=5,(3,4,0,0))
I0425 15:20:42.169918 133019535910720 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_22(process=5,(2,5,0,0))
I0425 15:20:42.169948 133019535910720 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_23(process=5,(3,5,0,0))
I0425 15:20:42.438111 133019535910720 metric_logger.py:185] completed step: 0, seconds: 11.170, TFLOP/s/device: 1.216, Tokens/s/device: 183.352, total_weights: 65536, loss: 10.874
I0425 15:20:42.609366 133019535910720 metric_logger.py:185] completed step: 1, seconds: 1.360, TFLOP/s/device: 9.991, Tokens/s/device: 1505.878, total_weights: 65536, loss: 10.874
I0425 15:20:43.048459 133019535910720 metric_logger.py:185] completed step: 2, seconds: 0.024, TFLOP/s/device: 564.625, Tokens/s/device: 85106.383, total_weights: 65536, loss: 10.263
I0425 15:20:43.195763 133019535910720 metric_logger.py:185] completed step: 3, seconds: 0.439, TFLOP/s/device: 30.918, Tokens/s/device: 4660.307, total_weights: 65536, loss: 9.734
I0425 15:20:43.491479 133019535910720 metric_logger.py:185] completed step: 4, seconds: 0.153, TFLOP/s/device: 89.033, Tokens/s/device: 13420.004, total_weights: 65536, loss: 9.278
I0425 15:20:43.497065 133019535910720 metric_logger.py:185] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.229, Tokens/s/device: 13901.805, total_weights: 65536, loss: 8.892
I0425 15:21:02.137674 133019535910720 metric_logger.py:185] completed step: 6, seconds: 0.296, TFLOP/s/device: 45.895, Tokens/s/device: 6917.750, total_weights: 65536, loss: 8.592
I0425 15:21:02.285342 133019535910720 metric_logger.py:185] completed step: 7, seconds: 18.494, TFLOP/s/device: 0.735, Tokens/s/device: 110.739, total_weights: 65536, loss: 8.384
I0425 15:21:02.432643 133019535910720 metric_logger.py:185] completed step: 8, seconds: 0.152, TFLOP/s/device: 89.459, Tokens/s/device: 13484.241, total_weights: 65536, loss: 8.255
I0425 15:21:02.579818 133019535910720 checkpointing.py:794] Waiting for step 9 to finish before checkpoint...
I0425 15:21:02.580455 133019535910720 checkpointing.py:798] Waited 0.0006573200225830078 seconds for step 9 to finish before starting checkpointing.
I0425 15:21:02.582585 133019535910720 checkpoint_manager.py:2024] [process=5][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0425 15:21:03.870841 2623 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0425 15:21:05.792229 132893510715136 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_07_eval/checkpoints/0/items/array_metadatas/process_5
I0425 15:21:37.392025 132893502322432 base_pytree_checkpoint_handler.py:129] [process=5] /jax/checkpoint/write/gbytes_per_sec: 28.318 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 55.780322313308716 s) (per-host)
I0425 15:21:37.392144 132893502322432 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 55.224940s.
I0425 15:21:45.595544 132893502322432 async_checkpointer.py:144] [process=5][thread=async_save] Background save thread done. Time taken: 63.428325s.
I0425 15:21:45.595879 132893527500544 async_checkpointer.py:273] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save.
I0425 15:21:45.596006 132893527500544 async_checkpointer.py:283] [process=5][thread=save_finalize] No errors found in background save thread=async_save.
I0425 15:21:45.596068 132893527500544 checkpoint_manager.py:2133] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0425 15:21:45.597396 132893527500544 checkpoint_manager.py:2142] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0425 15:21:45.597536 133019535910720 checkpoint_manager.py:2036] [process=5][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0.
W0425 15:21:45.597615 133019535910720 checkpoint_manager.py:1458] Waiting for previous save to complete took 43.015037 seconds. If this number is high, consider checkpointing less frequently.
I0425 15:21:45.599569 133019535910720 checkpoint_manager.py:1518] [process=5] Saving checkpoint at step 9
I0425 15:21:45.602999 133019535910720 async_checkpointer.py:452] [process=5] Started async saving checkpoint to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_07_eval/checkpoints/9.
I0425 15:21:46.144018 133019535910720 jax_array_handlers.py:358] Scheduling D2H of 39 prioritized jax.Array.
I0425 15:21:46.144118 133019535910720 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False
I0425 15:21:46.189670 133019535910720 base_pytree_checkpoint_handler.py:153] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.046971s
I0425 15:21:46.189827 133019535910720 base_pytree_checkpoint_handler.py:129] [process=5] /jax/checkpoint/write/blocking_gbytes_per_sec: 5.236 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2946343421936035 s) (per-host)
I0425 15:21:46.189877 133019535910720 base_pytree_checkpoint_handler.py:737] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.294693s (batch_requests_ready=0.245807s, total_serialization_initiated=0.048820s, others=0.000066s)
I0425 15:21:46.189966 133019535910720 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.298676s (all_items=0.000015s, per_item={'items': '0.00001550'}, temp_paths=0.298661)
I0425 15:21:46.190874 132893510715136 async_checkpointer.py:79] [process=5][thread=async_save] Background save thread started.
I0425 15:21:46.191056 133019535910720 async_checkpointer.py:561] Finished blocking save. Time taken: 0.591413s. Continuing background save to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_07_eval/checkpoints/9.
I0425 15:21:46.227588 133019535910720 checkpoint_manager.py:1566] [process=5][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0425 15:21:46.227911 132893527500544 async_checkpointer.py:265] [process=5][thread=save_finalize] Waiting for background save thread=async_save.
I0425 15:21:46.228059 133019535910720 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777130462.5825572, 'wait_for_prev_duration_secs': 43.015036821365356, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777130505.5996065, 'checkpointer_blocking_duration_secs': 0.5915775299072266, 'get_old_steps_start_time': 1777130506.1912093, 'get_old_steps_duration_secs': 2.956390380859375e-05, 'checkpoint_manager_blocking_start_time': 1777130462.5806952, 'checkpoint_manager_blocking_duration_secs': 43.64732813835144}
I0425 15:21:46.228171 133019535910720 checkpointing.py:409] Started an asynchronous checkpoint save for step 9
I0425 15:21:46.228219 133019535910720 checkpoint_manager.py:2024] [process=5][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0425 15:21:51.160040 132893519107840 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_07_eval/checkpoints/9/items/array_metadatas/process_5
I0425 15:22:27.821790 132893510715136 base_pytree_checkpoint_handler.py:129] [process=5] /jax/checkpoint/write/gbytes_per_sec: 37.675 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.92655396461487 s) (per-host)
I0425 15:22:27.821908 132893510715136 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.630910s.
I0425 15:22:35.284672 132893510715136 async_checkpointer.py:144] [process=5][thread=async_save] Background save thread done. Time taken: 49.093642s.
I0425 15:22:35.284942 132893527500544 async_checkpointer.py:273] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save.
I0425 15:22:35.285056 132893527500544 async_checkpointer.py:283] [process=5][thread=save_finalize] No errors found in background save thread=async_save.
I0425 15:22:35.285104 132893527500544 checkpoint_manager.py:2133] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0425 15:22:35.286442 132893527500544 checkpoint_manager.py:2142] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0425 15:22:35.286642 133019535910720 checkpoint_manager.py:2036] [process=5][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9.
I0425 15:22:35.286795 133019535910720 checkpoint_manager.py:2013] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0425 15:22:35.287522 133019535910720 metric_logger.py:185] completed step: 9, seconds: 0.148, TFLOP/s/device: 92.024, Tokens/s/device: 13870.828, total_weights: 65536, loss: 8.179
Per train step:
Total TFLOPs: 13.59
split as 93.93% learnable weight flops and 6.07% attention flops
XPK End: Sat Apr 25 15:22:45 UTC 2026
EXIT_CODE=0