MaxView

XPK Start: Wed Apr 22 14:22:40 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 14:23:05.808030: 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 14:23:06.016687 137776494806848 max_utils.py:273] Attempting to initialize the jax distributed system...
I0422 14:23:15.057954 137776494806848 distributed.py:149] Starting JAX distributed service on [::]:8482
I0422 14:23:15.060579 137776494806848 distributed.py:172] Connecting to JAX distributed service on mt-04-int8-kukhy-slice-job-0-0.mt-04-int8-kukhy:8482
I0422 14:23:16.294148 137776494806848 max_utils.py:284] Jax distributed system initialized!
I0422 14:23:22.452008 137776494806848 max_utils.py:800] System Information: Jax Version: 0.9.2
I0422 14:23:22.452119 137776494806848 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0422 14:23:22.452158 137776494806848 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 14:23:22.452195 137776494806848 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0422 14:23:23.151506 137776494806848 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0422 14:23:23.714087 137776494806848 checkpointing.py:688] Setting up checkpoint logger...
I0422 14:23:23.714207 137776494806848 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True
I0422 14:23:23.714258 137776494806848 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0422 14:23:23.714471 137776494806848 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 0x7d4e00314770>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0422 14:23:26.610516 137776494806848 checkpointing.py:266] Enabling policy for fixed interval checkpointing.
I0422 14:23:26.610771 137776494806848 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 0x7d39c42902c0>}, handler_registry=None
I0422 14:23:26.611013 137776494806848 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7d39c42902c0>` 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 14:23:26.611061 137776494806848 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7d39c40be840>` 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 14:23:26.611098 137776494806848 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 0x7d39c42902c0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7d39c42902c0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7d39c40be840>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7d39c40be840>}).
I0422 14:23:26.611435 137776494806848 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0422 14:23:26.611508 137776494806848 async_checkpointer.py:192] [process=5][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7d39943d7e20> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0422 14:23:27.703542 137776494806848 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/nnx_xpk_feat_nnx_post_train_fixes_20260422_123906_04_int8/checkpoints
I0422 14:23:27.718783 137776494806848 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/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/nnx_xpk_feat_nnx_post_train_fixes_20260422_123906_04_int8/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7d39c4123920>
I0422 14:23:27.718910 137776494806848 checkpointing.py:302] Checkpoint manager created!
I0422 14:23:29.075728 137776494806848 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint
I0422 14:23:29.075849 137776494806848 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0422 14:23:31.369878 137776494806848 maxtext_utils.py:1889]  decoder/decoder_norm/scale/value
    Shape:     float32[2048]
    Physical:  (None,)
I0422 14:23:31.370004 137776494806848 maxtext_utils.py:1889]  decoder/layers/mlp/wi_0/kernel/value
    Shape:     float32[2048,16,7168]
    Physical:  ('fsdp', None, None)
I0422 14:23:31.370056 137776494806848 maxtext_utils.py:1889]  decoder/layers/mlp/wi_1/kernel/value
    Shape:     float32[2048,16,7168]
    Physical:  ('fsdp', None, None)
I0422 14:23:31.370099 137776494806848 maxtext_utils.py:1889]  decoder/layers/mlp/wo/kernel/value
    Shape:     float32[7168,16,2048]
    Physical:  (None, None, 'fsdp')
I0422 14:23:31.370136 137776494806848 maxtext_utils.py:1889]  decoder/layers/post_self_attention_layer_norm/scale/value
    Shape:     float32[2048,16]
    Physical:  (None, None)
I0422 14:23:31.370171 137776494806848 maxtext_utils.py:1889]  decoder/layers/pre_self_attention_layer_norm/scale/value
    Shape:     float32[2048,16]
    Physical:  (None, None)
I0422 14:23:31.370206 137776494806848 maxtext_utils.py:1889]  decoder/layers/self_attention/key/kernel/value
    Shape:     float32[2048,16,16,128]
    Physical:  ('fsdp', None, None, None)
I0422 14:23:31.370240 137776494806848 maxtext_utils.py:1889]  decoder/layers/self_attention/out/kernel/value
    Shape:     float32[16,16,128,2048]
    Physical:  (None, None, None, 'fsdp')
I0422 14:23:31.370274 137776494806848 maxtext_utils.py:1889]  decoder/layers/self_attention/query/kernel/value
    Shape:     float32[2048,16,16,128]
    Physical:  ('fsdp', None, None, None)
I0422 14:23:31.370306 137776494806848 maxtext_utils.py:1889]  decoder/layers/self_attention/value/kernel/value
    Shape:     float32[2048,16,16,128]
    Physical:  ('fsdp', None, None, None)
I0422 14:23:31.370339 137776494806848 maxtext_utils.py:1889]  decoder/logits_dense/kernel/value
    Shape:     float32[2048,32000]
    Physical:  ('fsdp', None)

I0422 14:23:31.370370 137776494806848 maxtext_utils.py:1889]  token_embedder/embedding/value
    Shape:     float32[32000,2048]
    Physical:  (None, 'fsdp')
I0422 14:23:31.786927 137776494806848 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0422 14:23:31.787020 137776494806848 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0422 14:23:31.792414 137776494806848 nnx_decoders.py:465] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0422 14:23:31.792472 137776494806848 nnx_decoders.py:465] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0422 14:23:31.809047 137776494806848 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0422 14:23:31.809106 137776494806848 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0422 14:23:31.824954 137776494806848 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0422 14:23:31.825021 137776494806848 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0422 14:23:31.904032 137776494806848 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 14:23:31.904122 137776494806848 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 14:23:31.920411 137776494806848 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 14:23:31.920477 137776494806848 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 14:23:31.936645 137776494806848 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 14:23:31.936718 137776494806848 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 14:23:31.966442 137776494806848 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0422 14:23:31.966509 137776494806848 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 14:23:32.458138 137776494806848 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0422 14:23:32.458230 137776494806848 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0422 14:23:46.042328 137776494806848 max_utils.py:791] Total memory size: 1.8 GB, Output size: 0.4 GB, Temp size: 1.4 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB.
I0422 14:23:46.045669 137776494806848 metric_logger.py:301] number parameters: 1.104 billion
I0422 14:24:00.821455 137776494806848 checkpointing.py:794] Waiting for step 0 to finish before checkpoint...
I0422 14:24:01.061319 137776494806848 checkpointing.py:798] Waited 0.23984646797180176 seconds for step 0 to finish before starting checkpointing.
I0422 14:24:01.063854 137776494806848 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0422 14:24:01.066046 137776494806848 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 0
I0422 14:24:01.067404 137776494806848 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/nnx_xpk_feat_nnx_post_train_fixes_20260422_123906_04_int8/checkpoints/0.
I0422 14:24:01.387644 137776494806848 signaling_client.py:364] Using JaxDistributedSignalingClient
I0422 14:24:01.388639 137776494806848 jax_array_handlers.py:360] Scheduling D2H of 111 prioritized jax.Array.
I0422 14:24:01.388710 137776494806848 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 14:24:01.664805 137776494806848 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.278746s
I0422 14:24:01.664979 137776494806848 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 5.261 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2931854724884033 s) (per-host)
I0422 14:24:01.665037 137776494806848 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.293254s (batch_requests_ready=0.004611s, total_serialization_initiated=0.288566s, others=0.000077s)
I0422 14:24:01.665154 137776494806848 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.297469s (all_items=0.000018s, per_item={'items': '0.00001812'}, temp_paths=0.297451)
I0422 14:24:01.665960 137776494806848 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.60 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/nnx_xpk_feat_nnx_post_train_fixes_20260422_123906_04_int8/checkpoints/0.
I0422 14:24:01.666246 137644239484672 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 14:44:01.666214
I0422 14:24:01.680240 137776494806848 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0422 14:24:01.680490 137641244731136 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save.
I0422 14:24:01.680623 137776494806848 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/nnx_xpk_feat_nnx_post_train_fixes_20260422_123906_04_int8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776867841.0638366, 'wait_for_prev_duration_secs': 5.841255187988281e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776867841.0660837, 'checkpointer_blocking_duration_secs': 0.6003150939941406, 'get_old_steps_start_time': 1776867841.666425, 'get_old_steps_duration_secs': 3.075599670410156e-05, 'checkpoint_manager_blocking_start_time': 1776867841.061757, 'checkpoint_manager_blocking_duration_secs': 0.6188182830810547}
I0422 14:24:01.680764 137776494806848 checkpointing.py:409] Started an asynchronous checkpoint save for step 0
I0422 14:24:01.680846 137776494806848 max_utils.py:750] 
Memstats: After params initialized:
I0422 14:24:01.680900 137776494806848 max_utils.py:756] 	Using (GB) 0.44 / 31.25 (1.408000%) on TPU_18(process=5,(2,4,0,0))
I0422 14:24:01.680932 137776494806848 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_19(process=5,(3,4,0,0))
I0422 14:24:01.680958 137776494806848 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_22(process=5,(2,5,0,0))
I0422 14:24:01.680989 137776494806848 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_23(process=5,(3,5,0,0))
I0422 14:24:02.017207 137776494806848 metric_logger.py:196] completed step: 0, seconds: 14.774, TFLOP/s/device: 0.920, Tokens/s/device: 138.623, total_weights: 65536, loss: 10.872, lm_loss: 10.872, perplexity: 52668.902
I0422 14:24:02.257589 137776494806848 metric_logger.py:196] completed step: 1, seconds: 1.193, TFLOP/s/device: 11.386, Tokens/s/device: 1716.285, total_weights: 65536, loss: 10.872, lm_loss: 10.872, perplexity: 52668.902
I0422 14:24:02.701246 137776494806848 metric_logger.py:196] completed step: 2, seconds: 0.016, TFLOP/s/device: 837.007, Tokens/s/device: 126162.755, total_weights: 65536, loss: 10.260, lm_loss: 10.260, perplexity: 28557.658
I0422 14:24:02.931315 137776494806848 metric_logger.py:196] completed step: 3, seconds: 0.421, TFLOP/s/device: 32.266, Tokens/s/device: 4863.418, total_weights: 65536, loss: 9.728, lm_loss: 9.728, perplexity: 16789.145
I0422 14:24:03.391294 137776494806848 metric_logger.py:196] completed step: 4, seconds: 0.256, TFLOP/s/device: 52.989, Tokens/s/device: 7987.052, total_weights: 65536, loss: 9.271, lm_loss: 9.271, perplexity: 10625.563
I0422 14:24:03.399935 137776494806848 metric_logger.py:196] completed step: 5, seconds: 0.230, TFLOP/s/device: 59.072, Tokens/s/device: 8903.999, total_weights: 65536, loss: 8.885, lm_loss: 8.885, perplexity: 7225.917
I0422 14:24:04.791773    2939 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0422 14:24:06.851125 137641500587776 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 111 array_metadata.ArrayMetadata to gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/nnx_xpk_feat_nnx_post_train_fixes_20260422_123906_04_int8/checkpoints/0/items/array_metadatas/process_5
I0422 14:24:31.943308 137776494806848 metric_logger.py:196] completed step: 6, seconds: 0.460, TFLOP/s/device: 29.531, Tokens/s/device: 4451.206, total_weights: 65536, loss: 8.586, lm_loss: 8.586, perplexity: 5354.806
I0422 14:24:32.172720 137776494806848 metric_logger.py:196] completed step: 7, seconds: 28.317, TFLOP/s/device: 0.480, Tokens/s/device: 72.325, total_weights: 65536, loss: 8.378, lm_loss: 8.378, perplexity: 4350.756
I0422 14:24:32.402087 137776494806848 metric_logger.py:196] completed step: 8, seconds: 0.235, TFLOP/s/device: 57.772, Tokens/s/device: 8708.001, total_weights: 65536, loss: 8.249, lm_loss: 8.249, perplexity: 3824.619
I0422 14:24:32.632905 137776494806848 checkpointing.py:794] Waiting for step 9 to finish before checkpoint...
I0422 14:24:32.633849 137776494806848 checkpointing.py:798] Waited 0.0009570121765136719 seconds for step 9 to finish before starting checkpointing.
I0422 14:24:32.636044 137776494806848 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0422 14:24:35.094115 137644239484672 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 46.841 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 33.72228455543518 s) (per-host)
I0422 14:24:35.094243 137644239484672 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 33.427886s.
I0422 14:24:43.265581 137644239484672 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 41.599208s.
I0422 14:24:43.265832 137641244731136 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save.
I0422 14:24:43.265887 137641244731136 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save.
I0422 14:24:43.265935 137641244731136 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0422 14:24:43.268779 137641244731136 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0422 14:24:43.268931 137776494806848 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 14:24:43.269068 137776494806848 checkpoint_manager.py:1452] Waiting for previous save to complete took 10.633023 seconds. If this number is high, consider checkpointing less frequently.
I0422 14:24:43.271080 137776494806848 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 9
I0422 14:24:43.273001 137776494806848 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/nnx_xpk_feat_nnx_post_train_fixes_20260422_123906_04_int8/checkpoints/9.
I0422 14:24:43.582389 137776494806848 jax_array_handlers.py:360] Scheduling D2H of 111 prioritized jax.Array.
I0422 14:24:43.582486 137776494806848 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 14:24:43.617246 137776494806848 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.037362s
I0422 14:24:43.617413 137776494806848 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 31.365 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04918217658996582 s) (per-host)
I0422 14:24:43.617464 137776494806848 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.049243s (batch_requests_ready=0.004200s, total_serialization_initiated=0.044976s, others=0.000067s)
I0422 14:24:43.617578 137776494806848 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.053383s (all_items=0.000016s, per_item={'items': '0.00001597'}, temp_paths=0.053367)
I0422 14:24:43.618300 137776494806848 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.35 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/nnx_xpk_feat_nnx_post_train_fixes_20260422_123906_04_int8/checkpoints/9.
I0422 14:24:43.618664 137641244731136 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 14:44:43.618615
I0422 14:24:43.625118 137776494806848 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0422 14:24:43.625430 137641500587776 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save.
I0422 14:24:43.625592 137776494806848 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/nnx_xpk_feat_nnx_post_train_fixes_20260422_123906_04_int8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776867872.6360142, 'wait_for_prev_duration_secs': 10.633023262023926, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776867883.2711189, 'checkpointer_blocking_duration_secs': 0.3476872444152832, 'get_old_steps_start_time': 1776867883.6188293, 'get_old_steps_duration_secs': 3.337860107421875e-05, 'checkpoint_manager_blocking_start_time': 1776867872.6341262, 'checkpoint_manager_blocking_duration_secs': 10.991430759429932}
I0422 14:24:43.625721 137776494806848 checkpointing.py:409] Started an asynchronous checkpoint save for step 9
I0422 14:24:43.625769 137776494806848 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0422 14:24:49.554054 137620990453504 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 111 array_metadata.ArrayMetadata to gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/nnx_xpk_feat_nnx_post_train_fixes_20260422_123906_04_int8/checkpoints/9/items/array_metadatas/process_5
I0422 14:25:26.572371 137641244731136 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 36.731 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 43.004101514816284 s) (per-host)
I0422 14:25:26.572501 137641244731136 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.953724s.
I0422 14:25:36.017570 137641244731136 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 52.398778s.
I0422 14:25:36.017866 137641500587776 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save.
I0422 14:25:36.017982 137641500587776 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save.
I0422 14:25:36.018030 137641500587776 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0422 14:25:36.023151 137641500587776 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0422 14:25:36.023338 137776494806848 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 14:25:36.023520 137776494806848 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0422 14:25:36.024416 137776494806848 metric_logger.py:196] completed step: 9, seconds: 0.229, TFLOP/s/device: 59.232, Tokens/s/device: 8928.065, total_weights: 65536, loss: 8.174, lm_loss: 8.174, perplexity: 3546.104
Per train step:
 Total TFLOPs: 13.59 
 split as 93.93% learnable weight flops and 6.07% attention flops
XPK End: Wed Apr 22 14:25:46 UTC 2026
EXIT_CODE=0