XPK Start: Wed Apr 22 21:43:28 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 21:43:53.288544: 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 21:43:53.499841 134426506004288 max_utils.py:273] Attempting to initialize the jax distributed system...
I0422 21:44:02.542488 134426506004288 distributed.py:149] Starting JAX distributed service on [::]:8482
I0422 21:44:02.544770 134426506004288 distributed.py:172] Connecting to JAX distributed service on mt-07-eval-0wee7-slice-job-0-0.mt-07-eval-0wee7:8482
I0422 21:44:03.727885 134426506004288 max_utils.py:284] Jax distributed system initialized!
I0422 21:44:09.855972 134426506004288 max_utils.py:800] System Information: Jax Version: 0.9.2
I0422 21:44:09.856079 134426506004288 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0422 21:44:09.856137 134426506004288 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 21:44:09.856173 134426506004288 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0422 21:44:10.552032 134426506004288 maxtext_utils.py:1565] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0422 21:44:10.552328 134426506004288 checkpointing.py:677] Setting up checkpoint logger...
I0422 21:44:10.552385 134426506004288 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True
I0422 21:44:10.552430 134426506004288 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0422 21:44:10.552770 134426506004288 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 0x7a41fe314200>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0422 21:44:13.382604 134426506004288 checkpointing.py:265] Enabling policy for fixed interval checkpointing.
I0422 21:44:13.382840 134426506004288 checkpoint_manager.py:708] [process=6][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7a2da41df5f0>}, handler_registry=None
I0422 21:44:13.383078 134426506004288 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7a2da41df5f0>` 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 21:44:13.383140 134426506004288 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7a2da41e2d50>` 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 21:44:13.383178 134426506004288 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 0x7a2da41df5f0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7a2da41df5f0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7a2da41e2d50>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7a2da41e2d50>}).
I0422 21:44:13.383503 134426506004288 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0422 21:44:13.383573 134426506004288 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7a2c9857b2e0> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0422 21:44:14.470600 134426506004288 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_07_eval/checkpoints
I0422 21:44:14.915145 134426506004288 checkpoint_manager.py:929] [process=6][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_07_eval/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7a2da41de8a0>
I0422 21:44:14.915329 134426506004288 checkpointing.py:301] Checkpoint manager created!
I0422 21:44:15.842408 134426506004288 nnx_wrappers.py:453] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0422 21:44:15.842524 134426506004288 nnx_wrappers.py:453] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0422 21:44:16.219874 134426506004288 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0422 21:44:16.219968 134426506004288 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0422 21:44:16.236541 134426506004288 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0422 21:44:16.236600 134426506004288 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0422 21:44:16.266439 134426506004288 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0422 21:44:16.266541 134426506004288 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 21:44:16.283509 134426506004288 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0422 21:44:16.283571 134426506004288 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 21:44:16.301621 134426506004288 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0422 21:44:16.301685 134426506004288 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 21:44:16.326957 134426506004288 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0422 21:44:16.327025 134426506004288 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 21:44:16.348293 134426506004288 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0422 21:44:16.348365 134426506004288 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0422 21:44:16.559323 134426506004288 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint
I0422 21:44:16.559430 134426506004288 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0422 21:44:18.014575 134426506004288 maxtext_utils.py:1668] params/params/decoder/decoder_norm/scale
Shape: float32[2048]
Logical: P('norm',)
Physical: (None,)
I0422 21:44:18.014702 134426506004288 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, None)
I0422 21:44:18.014756 134426506004288 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, None)
I0422 21:44:18.014816 134426506004288 maxtext_utils.py:1668] params/params/decoder/layers/mlp/wo/kernel
Shape: float32[7168,16,2048]
Logical: P('mlp', 'layers', 'embed')
Physical: (None, None, 'fsdp')
I0422 21:44:18.014868 134426506004288 maxtext_utils.py:1668] params/params/decoder/layers/post_self_attention_layer_norm/scale
Shape: float32[2048,16]
Logical: P('norm', 'layers')
Physical: (None, None)
I0422 21:44:18.014917 134426506004288 maxtext_utils.py:1668] params/params/decoder/layers/pre_self_attention_layer_norm/scale
Shape: float32[2048,16]
Logical: P('norm', 'layers')
Physical: (None, None)
I0422 21:44:18.014973 134426506004288 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, None, None)
I0422 21:44:18.015028 134426506004288 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: (None, None, None, 'fsdp')
I0422 21:44:18.015070 134426506004288 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, None, None)
I0422 21:44:18.015133 134426506004288 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, None, None)
I0422 21:44:18.015190 134426506004288 maxtext_utils.py:1668] params/params/decoder/logits_dense/kernel
Shape: float32[2048,32000]
Logical: P('embed_vocab', 'vocab')
Physical: ('fsdp', None)
I0422 21:44:18.015240 134426506004288 maxtext_utils.py:1668] params/params/token_embedder/embedding
Shape: float32[32000,2048]
Logical: P('vocab', 'embed_vocab')
Physical: (None, 'fsdp')
I0422 21:44:18.508118 134426506004288 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0422 21:44:18.508209 134426506004288 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0422 21:44:18.529128 134426506004288 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0422 21:44:18.529221 134426506004288 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0422 21:44:29.522422 134426506004288 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.
I0422 21:44:29.523224 134426506004288 metric_logger.py:301] number parameters: 1.104 billion
I0422 21:44:40.770732 134426506004288 checkpointing.py:772] Waiting for step 0 to finish before checkpoint...
I0422 21:44:41.054357 134426506004288 checkpointing.py:776] Waited 0.2836012840270996 seconds for step 0 to finish before starting checkpointing.
I0422 21:44:41.056724 134426506004288 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0422 21:44:41.058356 134426506004288 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 0
I0422 21:44:41.059743 134426506004288 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_07_eval/checkpoints/0.
I0422 21:44:41.805651 134426506004288 signaling_client.py:364] Using JaxDistributedSignalingClient
I0422 21:44:41.806642 134426506004288 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0422 21:44:41.806699 134426506004288 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 21:44:42.081622 134426506004288 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.276051s
I0422 21:44:42.081798 134426506004288 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.480 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2814750671386719 s) (per-host)
I0422 21:44:42.081853 134426506004288 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.281541s (batch_requests_ready=0.002213s, total_serialization_initiated=0.279254s, others=0.000074s)
I0422 21:44:42.081944 134426506004288 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.285683s (all_items=0.000019s, per_item={'items': '0.00001931'}, temp_paths=0.285664)
I0422 21:44:42.082829 134426506004288 event_tracking.py:125] [process=6] [async] Finished blocking save in 1.02 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_07_eval/checkpoints/0.
I0422 21:44:42.083126 134297383163648 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 22:04:42.083085
I0422 21:44:42.089411 134426506004288 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0422 21:44:42.089687 134295230342912 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save.
I0422 21:44:42.089843 134426506004288 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_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776894281.0567048, 'wait_for_prev_duration_secs': 6.151199340820312e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776894281.0583944, 'checkpointer_blocking_duration_secs': 1.0248429775238037, 'get_old_steps_start_time': 1776894282.0832634, 'get_old_steps_duration_secs': 3.4809112548828125e-05, 'checkpoint_manager_blocking_start_time': 1776894281.0548556, 'checkpoint_manager_blocking_duration_secs': 1.0349476337432861}
I0422 21:44:42.089951 134426506004288 checkpointing.py:408] Started an asynchronous checkpoint save for step 0
I0422 21:44:42.090001 134426506004288 max_utils.py:750]
Memstats: After params initialized:
I0422 21:44:42.090051 134426506004288 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_24(process=6,(0,6,0,0))
I0422 21:44:42.090083 134426506004288 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_25(process=6,(1,6,0,0))
I0422 21:44:42.090125 134426506004288 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_28(process=6,(0,7,0,0))
I0422 21:44:42.090152 134426506004288 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_29(process=6,(1,7,0,0))
I0422 21:44:42.399800 134426506004288 metric_logger.py:196] completed step: 0, seconds: 11.247, TFLOP/s/device: 1.208, Tokens/s/device: 182.087, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0422 21:44:42.582604 134426506004288 metric_logger.py:196] completed step: 1, seconds: 1.628, TFLOP/s/device: 8.348, Tokens/s/device: 1258.316, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0422 21:44:42.969324 134426506004288 metric_logger.py:196] completed step: 2, seconds: 0.036, TFLOP/s/device: 380.666, Tokens/s/device: 57378.197, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28637.129
I0422 21:44:43.116495 134426506004288 metric_logger.py:196] completed step: 3, seconds: 0.387, TFLOP/s/device: 35.134, Tokens/s/device: 5295.766, total_weights: 65536, loss: 9.734, lm_loss: 9.734, perplexity: 16889.203
I0422 21:44:43.411439 134426506004288 metric_logger.py:196] completed step: 4, seconds: 0.153, TFLOP/s/device: 88.535, Tokens/s/device: 13344.888, total_weights: 65536, loss: 9.277, lm_loss: 9.277, perplexity: 10694.614
I0422 21:44:43.417612 134426506004288 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.368, Tokens/s/device: 13922.786, total_weights: 65536, loss: 8.892, lm_loss: 8.892, perplexity: 7270.717
I0422 21:44:44.968439 2790 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0422 21:44:47.409466 134295238735616 array_metadata_store.py:203] [process=6][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_07_eval/checkpoints/0/items/array_metadatas/process_6
I0422 21:45:06.109647 134426506004288 metric_logger.py:196] completed step: 6, seconds: 0.295, TFLOP/s/device: 46.011, Tokens/s/device: 6935.250, total_weights: 65536, loss: 8.592, lm_loss: 8.592, perplexity: 5390.759
I0422 21:45:06.256840 134426506004288 metric_logger.py:196] completed step: 7, seconds: 22.545, TFLOP/s/device: 0.603, Tokens/s/device: 90.840, total_weights: 65536, loss: 8.384, lm_loss: 8.384, perplexity: 4376.905
I0422 21:45:06.404217 134426506004288 metric_logger.py:196] completed step: 8, seconds: 0.153, TFLOP/s/device: 88.940, Tokens/s/device: 13406.037, total_weights: 65536, loss: 8.255, lm_loss: 8.255, perplexity: 3846.406
I0422 21:45:06.550784 134426506004288 checkpointing.py:772] Waiting for step 9 to finish before checkpoint...
I0422 21:45:06.551438 134426506004288 checkpointing.py:776] Waited 0.000675201416015625 seconds for step 9 to finish before starting checkpointing.
I0422 21:45:06.554816 134426506004288 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0422 21:45:17.619950 134297383163648 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 44.099 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 35.81960654258728 s) (per-host)
I0422 21:45:17.620056 134297383163648 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 35.536849s.
I0422 21:45:26.029469 134297383163648 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 43.946246s.
I0422 21:45:26.029761 134295230342912 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save.
I0422 21:45:26.029875 134295230342912 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save.
I0422 21:45:26.029927 134295230342912 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0422 21:45:26.031328 134295230342912 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0422 21:45:26.031535 134426506004288 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0.
W0422 21:45:26.031674 134426506004288 checkpoint_manager.py:1452] Waiting for previous save to complete took 19.476859 seconds. If this number is high, consider checkpointing less frequently.
I0422 21:45:26.033480 134426506004288 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 9
I0422 21:45:26.035609 134426506004288 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_07_eval/checkpoints/9.
I0422 21:45:26.647457 134426506004288 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0422 21:45:26.647554 134426506004288 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 21:45:26.689881 134426506004288 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.043463s
I0422 21:45:26.690050 134426506004288 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 32.896 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04689288139343262 s) (per-host)
I0422 21:45:26.690114 134426506004288 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.046953s (batch_requests_ready=0.001743s, total_serialization_initiated=0.045142s, others=0.000068s)
I0422 21:45:26.690204 134426506004288 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.050905s (all_items=0.000015s, per_item={'items': '0.00001502'}, temp_paths=0.050890)
I0422 21:45:26.690911 134426506004288 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.66 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_07_eval/checkpoints/9.
I0422 21:45:26.691265 134295230342912 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 22:05:26.691228
I0422 21:45:26.693275 134426506004288 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0422 21:45:26.693539 134273092810496 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save.
I0422 21:45:26.693703 134426506004288 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_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776894306.554786, 'wait_for_prev_duration_secs': 19.476858615875244, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776894326.0335205, 'checkpointer_blocking_duration_secs': 0.657893180847168, 'get_old_steps_start_time': 1776894326.6914392, 'get_old_steps_duration_secs': 3.0994415283203125e-05, 'checkpoint_manager_blocking_start_time': 1776894306.5516603, 'checkpoint_manager_blocking_duration_secs': 20.142006874084473}
I0422 21:45:26.693816 134426506004288 checkpointing.py:408] Started an asynchronous checkpoint save for step 9
I0422 21:45:26.693862 134426506004288 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0422 21:45:33.236248 134295238735616 array_metadata_store.py:203] [process=6][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_07_eval/checkpoints/9/items/array_metadatas/process_6
I0422 21:46:09.123303 134295230342912 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 37.184 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.480106830596924 s) (per-host)
I0422 21:46:09.123431 134295230342912 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.432051s.
I0422 21:46:15.284769 134295230342912 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 48.593375s.
I0422 21:46:15.285054 134273092810496 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save.
I0422 21:46:15.285222 134273092810496 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save.
I0422 21:46:15.285282 134273092810496 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0422 21:46:15.286823 134273092810496 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0422 21:46:15.287022 134426506004288 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9.
I0422 21:46:15.287195 134426506004288 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0422 21:46:15.288136 134426506004288 metric_logger.py:196] completed step: 9, seconds: 0.147, TFLOP/s/device: 92.330, Tokens/s/device: 13917.014, total_weights: 65536, loss: 8.179, lm_loss: 8.179, perplexity: 3564.635
Per train step:
Total TFLOPs: 13.59
split as 93.93% learnable weight flops and 6.07% attention flops
XPK End: Wed Apr 22 21:46:23 UTC 2026
EXIT_CODE=0