MaxView

XPK Start: Wed Apr 22 21:57:25 UTC 2026
PyTorch was not found. Models won't be available and only tokenizers, configuration and file/data utilities can be used.
`rope_parameters`'s factor field must be a float >= 1, got 40
`rope_parameters`'s beta_fast field must be a float, got 32
`rope_parameters`'s beta_slow field must be a float, got 1
DeepseekV32Config got `key=rope_scaling` in kwargs but hasn't set it as attribute. For RoPE standardization you need to set `self.rope_parameters` in model's config. 
2026-04-22 21:57:50.505180: E external/local_xla/xla/stream_executor/cuda/cuda_platform.cc:51] failed call to cuInit: INTERNAL: CUDA error: Failed call to cuInit: UNKNOWN ERROR (303)
I0422 21:57:50.716604 137633433057088 max_utils.py:273] Attempting to initialize the jax distributed system...
I0422 21:57:59.758613 137633433057088 distributed.py:149] Starting JAX distributed service on [::]:8482
I0422 21:57:59.760996 137633433057088 distributed.py:172] Connecting to JAX distributed service on mt-09-pdb-lt-1-05ucc-slice-job-0-0.mt-09-pdb-lt-1-05ucc:8482
I0422 21:58:00.905275 137633433057088 max_utils.py:284] Jax distributed system initialized!
I0422 21:58:07.297182 137633433057088 max_utils.py:800] System Information: Jax Version: 0.9.2
I0422 21:58:07.297291 137633433057088 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0422 21:58:07.297332 137633433057088 max_utils.py:802] System Information: Jax Backend: PJRT C API
TFRT TPU v6 lite
Built on Mar 4 2026 11:32:08 (1772652728) cl/878335365
I0422 21:58:07.297367 137633433057088 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0422 21:58:07.991588 137633433057088 maxtext_utils.py:1565] Num_devices: 32, shape (1, 1, 1, 8, 1, 1, 1, 1, 4, 1, 1, 1, 1)
I0422 21:58:07.991886 137633433057088 checkpointing.py:677] Setting up checkpoint logger...
I0422 21:58:07.991941 137633433057088 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True
I0422 21:58:07.991989 137633433057088 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0422 21:58:07.992333 137633433057088 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 0x7d2c9034c890>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0422 21:58:10.903543 137633433057088 checkpointing.py:265] Enabling policy for fixed interval checkpointing.
I0422 21:58:10.903796 137633433057088 checkpoint_manager.py:708] [process=5][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7d184c395e20>}, handler_registry=None
I0422 21:58:10.904036 137633433057088 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7d184c395e20>` for item "items" and save args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>` to `_handler_registry`.
I0422 21:58:10.904085 137633433057088 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7d184c39a390>` for item "metrics" and save args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>` to `_handler_registry`.
I0422 21:58:10.904121 137633433057088 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 0x7d184c395e20>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7d184c395e20>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7d184c39a390>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7d184c39a390>}).
I0422 21:58:10.904456 137633433057088 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0422 21:58:10.904527 137633433057088 async_checkpointer.py:192] [process=5][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7d17507e32e0> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0422 21:58:12.442182 137633433057088 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_09_pdb_lt_1/checkpoints
I0422 21:58:12.479448 137633433057088 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_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_09_pdb_lt_1/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7d184c396de0>
I0422 21:58:12.479590 137633433057088 checkpointing.py:301] Checkpoint manager created!
I0422 21:58:13.412319 137633433057088 nnx_wrappers.py:453] Unknown Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0422 21:58:13.412435 137633433057088 nnx_wrappers.py:453] Unknown Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, 'tensor').
I0422 21:58:13.793372 137633433057088 attentions.py:1088] attentions/inputs_q Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0422 21:58:13.793464 137633433057088 attentions.py:1088] attentions/inputs_q Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, 'tensor').
I0422 21:58:13.810150 137633433057088 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0422 21:58:13.810214 137633433057088 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, 'tensor').
I0422 21:58:13.833872 137633433057088 attentions.py:1154] attentions/query Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0422 21:58:13.833941 137633433057088 attentions.py:1154] attentions/query Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, 'tensor', None).
I0422 21:58:13.850601 137633433057088 attentions.py:1155] attentions/key Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0422 21:58:13.850670 137633433057088 attentions.py:1155] attentions/key Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, 'tensor', None).
I0422 21:58:13.867238 137633433057088 attentions.py:1156] attentions/value Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0422 21:58:13.867296 137633433057088 attentions.py:1156] attentions/value Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, 'tensor', None).
I0422 21:58:13.892045 137633433057088 attentions.py:1198] attentions/out Logical: bfloat16[8,2048,16,128]..................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0422 21:58:13.892120 137633433057088 attentions.py:1198] attentions/out Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, 'tensor', None).
I0422 21:58:13.913385 137633433057088 linears.py:525] linears/x Logical: bfloat16[8,2048,7168]....................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0422 21:58:13.913447 137633433057088 linears.py:525] linears/x Physical: bfloat16[8,2048,7168]....................................... ('fsdp', None, 'tensor').
I0422 21:58:14.124156 137633433057088 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint
I0422 21:58:14.124263 137633433057088 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint.
fsdp: 8
tensor: 4
I0422 21:58:15.566730 137633433057088 maxtext_utils.py:1668]  params/params/decoder/decoder_norm/scale
    Shape:     float32[2048]
    Logical:   P('norm',)
    Physical:  ('tensor',)
I0422 21:58:15.566868 137633433057088 maxtext_utils.py:1668]  params/params/decoder/layers/mlp/wi_0/kernel
    Shape:     float32[2048,16,7168]
    Logical:   P('embed', 'layers', 'mlp')
    Physical:  ('fsdp', None, 'tensor')
I0422 21:58:15.566932 137633433057088 maxtext_utils.py:1668]  params/params/decoder/layers/mlp/wi_1/kernel
    Shape:     float32[2048,16,7168]
    Logical:   P('embed', 'layers', 'mlp')
    Physical:  ('fsdp', None, 'tensor')
I0422 21:58:15.567026 137633433057088 maxtext_utils.py:1668]  params/params/decoder/layers/mlp/wo/kernel
    Shape:     float32[7168,16,2048]
    Logical:   P('mlp', 'layers', 'embed')
    Physical:  ('tensor', None, 'fsdp')
I0422 21:58:15.567081 137633433057088 maxtext_utils.py:1668]  params/params/decoder/layers/post_self_attention_layer_norm/scale
    Shape:     float32[2048,16]
    Logical:   P('norm', 'layers')
    Physical:  ('tensor', None)
I0422 21:58:15.567119 137633433057088 maxtext_utils.py:1668]  params/params/decoder/layers/pre_self_attention_layer_norm/scale
    Shape:     float32[2048,16]
    Logical:   P('norm', 'layers')
    Physical:  ('tensor', None)
I0422 21:58:15.567169 137633433057088 maxtext_utils.py:1668]  params/params/decoder/layers/self_attention/key/kernel
    Shape:     float32[2048,16,16,128]
    Logical:   P('embed', 'layers', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, 'tensor', None)
I0422 21:58:15.567225 137633433057088 maxtext_utils.py:1668]  params/params/decoder/layers/self_attention/out/kernel
    Shape:     float32[16,16,128,2048]
    Logical:   P('heads', 'layers', 'kv', 'embed')
    Physical:  ('tensor', None, None, 'fsdp')
I0422 21:58:15.567265 137633433057088 maxtext_utils.py:1668]  params/params/decoder/layers/self_attention/query/kernel
    Shape:     float32[2048,16,16,128]
    Logical:   P('embed', 'layers', 'q_heads', 'kv')
    Physical:  ('fsdp', None, 'tensor', None)
I0422 21:58:15.567300 137633433057088 maxtext_utils.py:1668]  params/params/decoder/layers/self_attention/value/kernel
    Shape:     float32[2048,16,16,128]
    Logical:   P('embed', 'layers', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, 'tensor', None)
I0422 21:58:15.567345 137633433057088 maxtext_utils.py:1668]  params/params/decoder/logits_dense/kernel
    Shape:     float32[2048,32000]
    Logical:   P('embed_vocab', 'vocab')

    Physical:  ('fsdp', 'tensor')
I0422 21:58:15.567392 137633433057088 maxtext_utils.py:1668]  params/params/token_embedder/embedding
    Shape:     float32[32000,2048]
    Logical:   P('vocab', 'embed_vocab')
    Physical:  ('tensor', 'fsdp')
I0422 21:58:16.060060 137633433057088 train.py:155] train/xent Logical: float32[8,2048]............................................. ('activation_embed_and_logits_batch', 'activation_length').
I0422 21:58:16.060150 137633433057088 train.py:155] train/xent Physical: float32[8,2048]............................................. ('fsdp', None).
I0422 21:58:16.075860 137633433057088 train.py:162] train/z_loss Logical: float32[8,2048]............................................. ('activation_embed_and_logits_batch', 'activation_length').
I0422 21:58:16.075924 137633433057088 train.py:162] train/z_loss Physical: float32[8,2048]............................................. ('fsdp', None).
I0422 21:58:31.086052 137633433057088 max_utils.py:791] Total memory size: 0.9 GB, Output size: 0.4 GB, Temp size: 0.5 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB.
I0422 21:58:31.086888 137633433057088 metric_logger.py:301] number parameters: 1.104 billion
I0422 21:58:32.284200 137633433057088 checkpointing.py:772] Waiting for step 0 to finish before checkpoint...
I0422 21:58:47.208400 137633433057088 checkpointing.py:776] Waited 14.924185037612915 seconds for step 0 to finish before starting checkpointing.
I0422 21:58:47.210807 137633433057088 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0422 21:58:47.212721 137633433057088 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 0
I0422 21:58:47.214206 137633433057088 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_09_pdb_lt_1/checkpoints/0.
I0422 21:58:48.366222 137633433057088 signaling_client.py:364] Using JaxDistributedSignalingClient
I0422 21:58:48.367161 137633433057088 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0422 21:58:48.367219 137633433057088 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False
I0422 21:58:48.638498 137633433057088 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.272357s
I0422 21:58:48.638688 137633433057088 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 5.548 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.27801990509033203 s) (per-host)
I0422 21:58:48.638746 137633433057088 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.278090s (batch_requests_ready=0.002238s, total_serialization_initiated=0.275763s, others=0.000089s)
I0422 21:58:48.638838 137633433057088 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.282367s (all_items=0.000018s, per_item={'items': '0.00001788'}, temp_paths=0.282349)
I0422 21:58:48.639568 137633433057088 event_tracking.py:125] [process=5] [async] Finished blocking save in 1.43 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_09_pdb_lt_1/checkpoints/0.
I0422 21:58:48.639846 137505407223552 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 22:18:48.639808
I0422 21:58:48.644334 137633433057088 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0422 21:58:48.644631 137505432401664 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save.
I0422 21:58:48.644795 137633433057088 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_09_pdb_lt_1/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776895127.2107892, 'wait_for_prev_duration_secs': 6.270408630371094e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776895127.21276, 'checkpointer_blocking_duration_secs': 1.4272515773773193, 'get_old_steps_start_time': 1776895128.6400332, 'get_old_steps_duration_secs': 2.7179718017578125e-05, 'checkpoint_manager_blocking_start_time': 1776895127.2089565, 'checkpoint_manager_blocking_duration_secs': 1.4358024597167969}
I0422 21:58:48.644893 137633433057088 checkpointing.py:408] Started an asynchronous checkpoint save for step 0
I0422 21:58:48.644942 137633433057088 max_utils.py:750] 
Memstats: After params initialized:
I0422 21:58:48.644989 137633433057088 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_18(process=5,(2,4,0,0))
I0422 21:58:48.645026 137633433057088 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_19(process=5,(3,4,0,0))
I0422 21:58:48.645053 137633433057088 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_22(process=5,(2,5,0,0))
I0422 21:58:48.645078 137633433057088 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_23(process=5,(3,5,0,0))
I0422 21:58:48.955197 137633433057088 metric_logger.py:196] completed step: 0, seconds: 1.197, TFLOP/s/device: 2.837, Tokens/s/device: 427.665, total_weights: 16384, loss: 10.862, lm_loss: 10.862, perplexity: 52153.723
I0422 21:58:49.044628 137633433057088 metric_logger.py:196] completed step: 1, seconds: 16.669, TFLOP/s/device: 0.204, Tokens/s/device: 30.715, total_weights: 16384, loss: 10.862, lm_loss: 10.862, perplexity: 52153.723
I0422 21:58:49.455180 137633433057088 metric_logger.py:196] completed step: 2, seconds: 0.031, TFLOP/s/device: 108.749, Tokens/s/device: 16391.868, total_weights: 16384, loss: 9.763, lm_loss: 9.763, perplexity: 17373.129
I0422 21:58:49.513996 137633433057088 metric_logger.py:196] completed step: 3, seconds: 0.411, TFLOP/s/device: 8.264, Tokens/s/device: 1245.618, total_weights: 16384, loss: 8.823, lm_loss: 8.823, perplexity: 6791.817
I0422 21:58:49.631441 137633433057088 metric_logger.py:196] completed step: 4, seconds: 0.064, TFLOP/s/device: 53.441, Tokens/s/device: 8055.254, total_weights: 16384, loss: 7.947, lm_loss: 7.947, perplexity: 2828.417
I0422 21:58:49.637288 137633433057088 metric_logger.py:196] completed step: 5, seconds: 0.059, TFLOP/s/device: 57.836, Tokens/s/device: 8717.713, total_weights: 16384, loss: 7.212, lm_loss: 7.212, perplexity: 1355.339
I0422 21:58:52.426405    2517 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0422 21:58:55.366252 137505415616256 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_09_pdb_lt_1/checkpoints/0/items/array_metadatas/process_5
I0422 21:59:03.419722 137633433057088 metric_logger.py:196] completed step: 6, seconds: 0.118, TFLOP/s/device: 28.776, Tokens/s/device: 4337.366, total_weights: 16384, loss: 6.652, lm_loss: 6.652, perplexity: 774.659
I0422 21:59:03.478103 137633433057088 metric_logger.py:196] completed step: 7, seconds: 13.725, TFLOP/s/device: 0.247, Tokens/s/device: 37.305, total_weights: 16384, loss: 6.269, lm_loss: 6.269, perplexity: 527.696
I0422 21:59:03.536510 137633433057088 metric_logger.py:196] completed step: 8, seconds: 0.063, TFLOP/s/device: 53.499, Tokens/s/device: 8064.008, total_weights: 16384, loss: 6.031, lm_loss: 6.031, perplexity: 416.165
I0422 21:59:03.594219 137633433057088 checkpointing.py:772] Waiting for step 9 to finish before checkpoint...
I0422 21:59:03.594847 137633433057088 checkpointing.py:776] Waited 0.0006444454193115234 seconds for step 9 to finish before starting checkpointing.
I0422 21:59:03.598106 137633433057088 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0422 21:59:25.192979 137505407223552 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 42.886 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 36.8322651386261 s) (per-host)
I0422 21:59:25.193097 137505407223552 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 36.553136s.
I0422 21:59:34.662125 137505407223552 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 46.022147s.
I0422 21:59:34.662410 137505432401664 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save.
I0422 21:59:34.662531 137505432401664 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save.
I0422 21:59:34.662583 137505432401664 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0422 21:59:34.664979 137505432401664 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0422 21:59:34.665152 137633433057088 checkpoint_manager.py:2032] [process=5][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0.
W0422 21:59:34.665296 137633433057088 checkpoint_manager.py:1452] Waiting for previous save to complete took 31.067187 seconds. If this number is high, consider checkpointing less frequently.
I0422 21:59:34.667364 137633433057088 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 9
I0422 21:59:34.669365 137633433057088 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_09_pdb_lt_1/checkpoints/9.
I0422 21:59:35.386675 137633433057088 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0422 21:59:35.386772 137633433057088 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False
I0422 21:59:35.412187 137633433057088 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.026659s
I0422 21:59:35.412362 137633433057088 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 51.294 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.030073165893554688 s) (per-host)
I0422 21:59:35.412414 137633433057088 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.030135s (batch_requests_ready=0.001765s, total_serialization_initiated=0.028300s, others=0.000070s)
I0422 21:59:35.412505 137633433057088 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.034216s (all_items=0.000015s, per_item={'items': '0.00001502'}, temp_paths=0.034201)
I0422 21:59:35.413308 137633433057088 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.75 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_09_pdb_lt_1/checkpoints/9.
I0422 21:59:35.413584 137505432401664 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 22:19:35.413556
I0422 21:59:35.418834 137633433057088 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0422 21:59:35.419109 137504876152576 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save.
I0422 21:59:35.419279 137633433057088 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_09_pdb_lt_1/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776895143.5980775, 'wait_for_prev_duration_secs': 31.06718683242798, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776895174.667402, 'checkpointer_blocking_duration_secs': 0.7462780475616455, 'get_old_steps_start_time': 1776895175.4137022, 'get_old_steps_duration_secs': 2.956390380859375e-05, 'checkpoint_manager_blocking_start_time': 1776895143.5950806, 'checkpoint_manager_blocking_duration_secs': 31.824162244796753}
I0422 21:59:35.419397 137633433057088 checkpointing.py:408] Started an asynchronous checkpoint save for step 9
I0422 21:59:35.419443 137633433057088 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0422 21:59:42.223385 137498973939456 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_09_pdb_lt_1/checkpoints/9/items/array_metadatas/process_5
I0422 22:00:18.298792 137505432401664 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 36.806 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.91646432876587 s) (per-host)
I0422 22:00:18.298947 137505432401664 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.884722s.
I0422 22:00:26.154291 137505432401664 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 50.740075s.
I0422 22:00:26.154583 137504876152576 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save.
I0422 22:00:26.154719 137504876152576 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save.
I0422 22:00:26.154772 137504876152576 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0422 22:00:26.156519 137504876152576 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0422 22:00:26.156726 137633433057088 checkpoint_manager.py:2032] [process=5][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9.
I0422 22:00:26.156896 137633433057088 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0422 22:00:26.157943 137633433057088 metric_logger.py:196] completed step: 9, seconds: 0.058, TFLOP/s/device: 58.565, Tokens/s/device: 8827.586, total_weights: 16384, loss: 5.892, lm_loss: 5.892, perplexity: 361.955
Per train step:
 Total TFLOPs: 3.40 
 split as 93.93% learnable weight flops and 6.07% attention flops
XPK End: Wed Apr 22 22:00:36 UTC 2026
EXIT_CODE=0