MaxView

XPK Start: Mon Apr 20 06:07:42 UTC 2026
PyTorch was not found. Models won't be available and only tokenizers, configuration and file/data utilities can be used.
2026-04-20 06:08:06.667903: 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)
I0420 06:08:07.206369 132708396721984 max_utils.py:273] Attempting to initialize the jax distributed system...
I0420 06:08:16.245934 132708396721984 distributed.py:149] Starting JAX distributed service on [::]:8482
I0420 06:08:16.248331 132708396721984 distributed.py:172] Connecting to JAX distributed service on mt-03-dropout-5xwjy-slice-job-0-0.mt-03-dropout-5xwjy:8482
I0420 06:08:17.784921 132708396721984 max_utils.py:284] Jax distributed system initialized!
I0420 06:08:23.874588 132708396721984 max_utils.py:800] System Information: Jax Version: 0.9.2
I0420 06:08:23.874690 132708396721984 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0420 06:08:23.874732 132708396721984 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
I0420 06:08:23.874766 132708396721984 train_utils.py:348] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0420 06:08:24.574064 132708396721984 maxtext_utils.py:1551] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0420 06:08:24.574332 132708396721984 checkpointing.py:677] Setting up checkpoint logger...
I0420 06:08:24.574384 132708396721984 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True
I0420 06:08:24.574432 132708396721984 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0420 06:08:24.574772 132708396721984 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 0x78b200514e90>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0420 06:08:27.859263 132708396721984 checkpointing.py:265] Enabling policy for fixed interval checkpointing.
I0420 06:08:27.859499 132708396721984 checkpoint_manager.py:708] [process=2][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x789d9c57f5f0>}, handler_registry=None
I0420 06:08:27.859731 132708396721984 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x789d9c57f5f0>` 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`.
I0420 06:08:27.859780 132708396721984 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x789d9c583cb0>` 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`.
I0420 06:08:27.859813 132708396721984 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 0x789d9c57f5f0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x789d9c57f5f0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x789d9c583cb0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x789d9c583cb0>}).
I0420 06:08:27.860137 132708396721984 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0420 06:08:27.860207 132708396721984 async_checkpointer.py:192] [process=2][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x789d9c1eb920> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0420 06:08:29.099502 132708396721984 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_main_20260420_060028/linen_xpk_main_20260420_060028_03_dropout/checkpoints
I0420 06:08:29.534219 132708396721984 checkpoint_manager.py:929] [process=2][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_main_20260420_060028/linen_xpk_main_20260420_060028_03_dropout/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x78b0d2de9700>
I0420 06:08:29.534383 132708396721984 checkpointing.py:301] Checkpoint manager created!
I0420 06:08:29.877303 132708396721984 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0420 06:08:29.877417 132708396721984 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None).
I0420 06:08:30.257851 132708396721984 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0420 06:08:30.257941 132708396721984 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None).
I0420 06:08:30.274247 132708396721984 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0420 06:08:30.274307 132708396721984 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None).
I0420 06:08:30.298028 132708396721984 attentions.py:1154] attentions/query Logical: bfloat16[32,128,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0420 06:08:30.298094 132708396721984 attentions.py:1154] attentions/query Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None).
I0420 06:08:30.314486 132708396721984 attentions.py:1155] attentions/key Logical: bfloat16[32,128,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0420 06:08:30.314544 132708396721984 attentions.py:1155] attentions/key Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None).
I0420 06:08:30.330896 132708396721984 attentions.py:1156] attentions/value Logical: bfloat16[32,128,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0420 06:08:30.330957 132708396721984 attentions.py:1156] attentions/value Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None).
I0420 06:08:30.356551 132708396721984 attentions.py:1197] attentions/out Logical: bfloat16[32,128,16,128]..................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0420 06:08:30.356621 132708396721984 attentions.py:1197] attentions/out Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None).
I0420 06:08:30.382763 132708396721984 linears.py:525] linears/x Logical: bfloat16[32,128,7168]....................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0420 06:08:30.382828 132708396721984 linears.py:525] linears/x Physical: bfloat16[32,128,7168]....................................... ('fsdp', None, None).
I0420 06:08:30.611488 132708396721984 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint
I0420 06:08:30.611595 132708396721984 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0420 06:08:32.048372 132708396721984 maxtext_utils.py:1654]  params/params/decoder/decoder_norm/scale
    Shape:     float32[2048]
    Logical:   P('norm',)
    Physical:  (None,)
I0420 06:08:32.048504 132708396721984 maxtext_utils.py:1654]  params/params/decoder/layers/mlp/wi_0/kernel
    Shape:     float32[2048,16,7168]
    Logical:   P('embed', 'layers', 'mlp')
    Physical:  ('fsdp', None, None)
I0420 06:08:32.048557 132708396721984 maxtext_utils.py:1654]  params/params/decoder/layers/mlp/wi_1/kernel
    Shape:     float32[2048,16,7168]
    Logical:   P('embed', 'layers', 'mlp')
    Physical:  ('fsdp', None, None)
I0420 06:08:32.048615 132708396721984 maxtext_utils.py:1654]  params/params/decoder/layers/mlp/wo/kernel
    Shape:     float32[7168,16,2048]
    Logical:   P('mlp', 'layers', 'embed')
    Physical:  (None, None, 'fsdp')
I0420 06:08:32.048667 132708396721984 maxtext_utils.py:1654]  params/params/decoder/layers/post_self_attention_layer_norm/scale
    Shape:     float32[2048,16]
    Logical:   P('norm', 'layers')
    Physical:  (None, None)
I0420 06:08:32.048712 132708396721984 maxtext_utils.py:1654]  params/params/decoder/layers/pre_self_attention_layer_norm/scale
    Shape:     float32[2048,16]
    Logical:   P('norm', 'layers')
    Physical:  (None, None)
I0420 06:08:32.048766 132708396721984 maxtext_utils.py:1654]  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)
I0420 06:08:32.048818 132708396721984 maxtext_utils.py:1654]  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')
I0420 06:08:32.048858 132708396721984 maxtext_utils.py:1654]  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)
I0420 06:08:32.048896 132708396721984 maxtext_utils.py:1654]  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)
I0420 06:08:32.048945 132708396721984 maxtext_utils.py:1654]  params/params/decoder/logits_dense/kernel
    Shape:     float32[2048,32000]
    Logical:   P('embed_vocab', 'vocab')
    Physical:  ('fsdp', None)
I0420 06:08:32.048996 132708396721984 maxtext_utils.py:1654]  params/params/token_embedder/embedding
    Shape:     float32[32000,2048]
    Logical:   P('vocab', 'embed_vocab')
    Physical:  (None, 'fsdp')

I0420 06:08:32.571006 132708396721984 train.py:155] train/xent Logical: float32[32,128]............................................. ('activation_embed_and_logits_batch', 'activation_length').
I0420 06:08:32.571112 132708396721984 train.py:155] train/xent Physical: float32[32,128]............................................. ('fsdp', None).
I0420 06:08:32.586625 132708396721984 train.py:162] train/z_loss Logical: float32[32,128]............................................. ('activation_embed_and_logits_batch', 'activation_length').
I0420 06:08:32.586687 132708396721984 train.py:162] train/z_loss Physical: float32[32,128]............................................. ('fsdp', None).
I0420 06:08:36.146428 132708396721984 max_utils.py:791] Total memory size: 0.8 GB, Output size: 0.4 GB, Temp size: 0.4 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB.
I0420 06:08:36.147165 132708396721984 metric_logger.py:301] number parameters: 1.104 billion
I0420 06:08:40.228787 132708396721984 checkpointing.py:772] Waiting for step 0 to finish before checkpoint...
I0420 06:08:40.836998 132708396721984 checkpointing.py:776] Waited 0.6081898212432861 seconds for step 0 to finish before starting checkpointing.
I0420 06:08:40.840556 132708396721984 checkpoint_manager.py:2009] [process=2][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0420 06:08:40.842542 132708396721984 checkpoint_manager.py:1512] [process=2] Saving checkpoint at step 0
I0420 06:08:40.843913 132708396721984 event_tracking.py:70] [process=2] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260420_060028/linen_xpk_main_20260420_060028_03_dropout/checkpoints/0.
I0420 06:08:41.562984 132708396721984 signaling_client.py:364] Using JaxDistributedSignalingClient
I0420 06:08:41.563925 132708396721984 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0420 06:08:41.563982 132708396721984 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
I0420 06:08:41.843361 132708396721984 base_pytree_checkpoint_handler.py:154] [process=2][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.280447s
I0420 06:08:41.843551 132708396721984 base_pytree_checkpoint_handler.py:130] [process=2] /jax/orbax/write/blocking_gbytes_per_sec: 5.397 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.28581738471984863 s) (per-host)
I0420 06:08:41.843626 132708396721984 base_pytree_checkpoint_handler.py:768] [process=2][thread=MainThread] Initiated Pytree async_save. Time taken: 0.285903s (batch_requests_ready=0.002206s, total_serialization_initiated=0.283604s, others=0.000094s)
I0420 06:08:41.843758 132708396721984 composite_checkpoint_handler.py:715] [process=2][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.289957s (all_items=0.000018s, per_item={'items': '0.00001836'}, temp_paths=0.289938)
I0420 06:08:41.844596 132708396721984 event_tracking.py:125] [process=2] [async] Finished blocking save in 1.00 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260420_060028/linen_xpk_main_20260420_060028_03_dropout/checkpoints/0.
I0420 06:08:41.844948 132579785168640 async_checkpointer.py:76] [process=2][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-20 06:28:41.844910
I0420 06:08:41.856558 132708396721984 checkpoint_manager.py:1560] [process=2][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0420 06:08:41.856824 132578673669888 async_checkpointer.py:280] [process=2][thread=save_finalize] Waiting for background save thread=async_save.
I0420 06:08:41.856980 132708396721984 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260420_060028/linen_xpk_main_20260420_060028_03_dropout/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776665320.8405373, 'wait_for_prev_duration_secs': 5.9604644775390625e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776665320.8425808, 'checkpointer_blocking_duration_secs': 1.0025408267974854, 'get_old_steps_start_time': 1776665321.8451452, 'get_old_steps_duration_secs': 3.1948089599609375e-05, 'checkpoint_manager_blocking_start_time': 1776665320.8375306, 'checkpoint_manager_blocking_duration_secs': 1.0194108486175537}
I0420 06:08:41.857108 132708396721984 checkpointing.py:408] Started an asynchronous checkpoint save for step 0
I0420 06:08:41.857162 132708396721984 max_utils.py:750] 
Memstats: After params initialized:
I0420 06:08:41.857209 132708396721984 max_utils.py:756] 	Using (GB) 0.41 / 31.25 (1.312000%) on TPU_8(process=2,(0,2,0,0))
I0420 06:08:41.857241 132708396721984 max_utils.py:756] 	Using (GB) 0.41 / 31.25 (1.312000%) on TPU_9(process=2,(1,2,0,0))
I0420 06:08:41.857267 132708396721984 max_utils.py:756] 	Using (GB) 0.41 / 31.25 (1.312000%) on TPU_12(process=2,(0,3,0,0))
I0420 06:08:41.857291 132708396721984 max_utils.py:756] 	Using (GB) 0.41 / 31.25 (1.312000%) on TPU_13(process=2,(1,3,0,0))
I0420 06:08:42.173907 132708396721984 metric_logger.py:196] completed step: 0, seconds: 4.082, TFLOP/s/device: 0.196, Tokens/s/device: 31.361, total_weights: 4096, loss: 10.889, lm_loss: 10.889, perplexity: 53560.699
I0420 06:08:42.265519 132708396721984 metric_logger.py:196] completed step: 1, seconds: 1.944, TFLOP/s/device: 0.412, Tokens/s/device: 65.857, total_weights: 4096, loss: 10.902, lm_loss: 10.902, perplexity: 54298.523
I0420 06:08:42.671440 132708396721984 metric_logger.py:196] completed step: 2, seconds: 0.021, TFLOP/s/device: 38.132, Tokens/s/device: 6094.367, total_weights: 4096, loss: 9.956, lm_loss: 9.956, perplexity: 21082.051
I0420 06:08:42.743266 132708396721984 metric_logger.py:196] completed step: 3, seconds: 0.407, TFLOP/s/device: 1.970, Tokens/s/device: 314.783, total_weights: 4096, loss: 9.139, lm_loss: 9.139, perplexity: 9314.691
I0420 06:08:42.887635 132708396721984 metric_logger.py:196] completed step: 4, seconds: 0.076, TFLOP/s/device: 10.524, Tokens/s/device: 1682.042, total_weights: 4096, loss: 8.459, lm_loss: 8.459, perplexity: 4715.493
I0420 06:08:42.893641 132708396721984 metric_logger.py:196] completed step: 5, seconds: 0.072, TFLOP/s/device: 11.201, Tokens/s/device: 1790.135, total_weights: 4096, loss: 7.924, lm_loss: 7.924, perplexity: 2762.373
I0420 06:08:45.779687    2852 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0420 06:08:48.388337 132578721478400 array_metadata_store.py:203] [process=2][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260420_060028/linen_xpk_main_20260420_060028_03_dropout/checkpoints/0/items/array_metadatas/process_2
I0420 06:08:52.687745 132708396721984 metric_logger.py:196] completed step: 6, seconds: 0.145, TFLOP/s/device: 5.524, Tokens/s/device: 882.862, total_weights: 4096, loss: 7.553, lm_loss: 7.553, perplexity: 1906.617
I0420 06:08:52.758408 132708396721984 metric_logger.py:196] completed step: 7, seconds: 9.725, TFLOP/s/device: 0.082, Tokens/s/device: 13.162, total_weights: 4096, loss: 7.267, lm_loss: 7.267, perplexity: 1431.653
I0420 06:08:52.829071 132708396721984 metric_logger.py:196] completed step: 8, seconds: 0.075, TFLOP/s/device: 10.685, Tokens/s/device: 1707.805, total_weights: 4096, loss: 7.111, lm_loss: 7.111, perplexity: 1225.983
I0420 06:08:52.899036 132708396721984 checkpointing.py:772] Waiting for step 9 to finish before checkpoint...
I0420 06:08:52.899688 132708396721984 checkpointing.py:776] Waited 0.0006897449493408203 seconds for step 9 to finish before starting checkpointing.
I0420 06:08:52.901739 132708396721984 checkpoint_manager.py:2020] [process=2][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0420 06:09:15.963989 132579785168640 base_pytree_checkpoint_handler.py:130] [process=2] /jax/orbax/write/gbytes_per_sec: 45.910 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 34.406221866607666 s) (per-host)
I0420 06:09:15.964116 132579785168640 async_checkpointer.py:90] [process=2][thread=async_save] 3 Handler Commit operations completed. Time taken: 34.119034s.
I0420 06:09:23.718404 132579785168640 async_checkpointer.py:160] [process=2][thread=async_save] Background save thread done. Time taken: 41.873305s.
I0420 06:09:23.718705 132578673669888 async_checkpointer.py:288] [process=2][thread=save_finalize] Done with waiting for background save thread=async_save.
I0420 06:09:23.718827 132578673669888 async_checkpointer.py:298] [process=2][thread=save_finalize] No errors found in background save thread=async_save.
I0420 06:09:23.718876 132578673669888 checkpoint_manager.py:2137] [process=2][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0420 06:09:23.720355 132578673669888 checkpoint_manager.py:2146] [process=2][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0420 06:09:23.720535 132708396721984 checkpoint_manager.py:2032] [process=2][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0.
W0420 06:09:23.720674 132708396721984 checkpoint_manager.py:1452] Waiting for previous save to complete took 30.818937 seconds. If this number is high, consider checkpointing less frequently.
I0420 06:09:23.722307 132708396721984 checkpoint_manager.py:1512] [process=2] Saving checkpoint at step 9
I0420 06:09:23.724368 132708396721984 event_tracking.py:70] [process=2] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260420_060028/linen_xpk_main_20260420_060028_03_dropout/checkpoints/9.
I0420 06:09:24.428623 132708396721984 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0420 06:09:24.428717 132708396721984 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
I0420 06:09:24.468863 132708396721984 base_pytree_checkpoint_handler.py:154] [process=2][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.041515s
I0420 06:09:24.469002 132708396721984 base_pytree_checkpoint_handler.py:130] [process=2] /jax/orbax/write/blocking_gbytes_per_sec: 34.368 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04488372802734375 s) (per-host)
I0420 06:09:24.469067 132708396721984 base_pytree_checkpoint_handler.py:768] [process=2][thread=MainThread] Initiated Pytree async_save. Time taken: 0.044957s (batch_requests_ready=0.001728s, total_serialization_initiated=0.043151s, others=0.000079s)
I0420 06:09:24.469148 132708396721984 composite_checkpoint_handler.py:715] [process=2][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.049599s (all_items=0.000033s, per_item={'items': '0.00003338'}, temp_paths=0.049566)
I0420 06:09:24.469837 132708396721984 event_tracking.py:125] [process=2] [async] Finished blocking save in 0.75 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260420_060028/linen_xpk_main_20260420_060028_03_dropout/checkpoints/9.
I0420 06:09:24.470126 132578673669888 async_checkpointer.py:76] [process=2][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-20 06:29:24.470094
I0420 06:09:24.473672 132708396721984 checkpoint_manager.py:1560] [process=2][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0420 06:09:24.473893 132578721478400 async_checkpointer.py:280] [process=2][thread=save_finalize] Waiting for background save thread=async_save.
I0420 06:09:24.474042 132708396721984 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260420_060028/linen_xpk_main_20260420_060028_03_dropout/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776665332.9017081, 'wait_for_prev_duration_secs': 30.818936824798584, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776665363.7223446, 'checkpointer_blocking_duration_secs': 0.747920036315918, 'get_old_steps_start_time': 1776665364.4702892, 'get_old_steps_duration_secs': 2.956390380859375e-05, 'checkpoint_manager_blocking_start_time': 1776665332.8999114, 'checkpoint_manager_blocking_duration_secs': 31.574082612991333}
I0420 06:09:24.474161 132708396721984 checkpointing.py:408] Started an asynchronous checkpoint save for step 9
I0420 06:09:24.474205 132708396721984 checkpoint_manager.py:2020] [process=2][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0420 06:09:30.352488 132574912833280 array_metadata_store.py:203] [process=2][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260420_060028/linen_xpk_main_20260420_060028_03_dropout/checkpoints/9/items/array_metadatas/process_2
I0420 06:10:05.625214 132578673669888 base_pytree_checkpoint_handler.py:130] [process=2] /jax/orbax/write/gbytes_per_sec: 38.339 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.20104622840881 s) (per-host)
I0420 06:10:05.625337 132578673669888 async_checkpointer.py:90] [process=2][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.155102s.
I0420 06:10:14.011339 132578673669888 async_checkpointer.py:160] [process=2][thread=async_save] Background save thread done. Time taken: 49.541089s.
I0420 06:10:14.011612 132578721478400 async_checkpointer.py:288] [process=2][thread=save_finalize] Done with waiting for background save thread=async_save.
I0420 06:10:14.011727 132578721478400 async_checkpointer.py:298] [process=2][thread=save_finalize] No errors found in background save thread=async_save.
I0420 06:10:14.011772 132578721478400 checkpoint_manager.py:2137] [process=2][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0420 06:10:14.014469 132578721478400 checkpoint_manager.py:2146] [process=2][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0420 06:10:14.014635 132708396721984 checkpoint_manager.py:2032] [process=2][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9.
I0420 06:10:14.014801 132708396721984 checkpoint_manager.py:2009] [process=2][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0420 06:10:14.015815 132708396721984 metric_logger.py:196] completed step: 9, seconds: 0.071, TFLOP/s/device: 11.358, Tokens/s/device: 1815.242, total_weights: 4096, loss: 6.981, lm_loss: 6.981, perplexity: 1075.867
Per train step:
 Total TFLOPs: 0.80 
 split as 99.60% learnable weight flops and 0.40% attention flops
XPK End: Mon Apr 20 06:10:22 UTC 2026
EXIT_CODE=0