MaxView

XPK Start: Wed Apr 22 14:18:07 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 14:18:32.618533: 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 14:18:32.831171 139968416003904 max_utils.py:273] Attempting to initialize the jax distributed system...
I0422 14:18:41.873019 139968416003904 distributed.py:149] Starting JAX distributed service on [::]:8482
I0422 14:18:41.875301 139968416003904 distributed.py:172] Connecting to JAX distributed service on mt-02-synthetic-obn1e-slice-job-0-0.mt-02-synthetic-obn1e:8482
I0422 14:18:43.239402 139968416003904 max_utils.py:284] Jax distributed system initialized!
I0422 14:18:49.564066 139968416003904 max_utils.py:800] System Information: Jax Version: 0.9.2
I0422 14:18:49.564172 139968416003904 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0422 14:18:49.564214 139968416003904 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 14:18:49.564251 139968416003904 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0422 14:18:50.291372 139968416003904 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0422 14:18:50.405558 139968416003904 checkpointing.py:688] Setting up checkpoint logger...
I0422 14:18:50.405688 139968416003904 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True
I0422 14:18:50.405736 139968416003904 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0422 14:18:50.405933 139968416003904 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 0x7f4c737bfe90>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0422 14:18:53.470050 139968416003904 checkpointing.py:266] Enabling policy for fixed interval checkpointing.
I0422 14:18:53.470315 139968416003904 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 0x7f3858514230>}, handler_registry=None
I0422 14:18:53.470554 139968416003904 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7f3858514230>` 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 14:18:53.470602 139968416003904 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7f3858437b60>` 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 14:18:53.470638 139968416003904 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 0x7f3858514230>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7f3858514230>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7f3858437b60>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7f3858437b60>}).
I0422 14:18:53.470983 139968416003904 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0422 14:18:53.471054 139968416003904 async_checkpointer.py:192] [process=5][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7f3840523600> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0422 14:18:54.569264 139968416003904 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_02_synthetic/checkpoints
I0422 14:18:54.599450 139968416003904 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_02_synthetic/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7f3858436cf0>
I0422 14:18:54.599589 139968416003904 checkpointing.py:302] Checkpoint manager created!
I0422 14:18:55.569264 139968416003904 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint
I0422 14:18:55.569382 139968416003904 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0422 14:18:56.993739 139968416003904 maxtext_utils.py:1889]  decoder/decoder_norm/scale/value
    Shape:     float32[2048]
    Physical:  (None,)
I0422 14:18:56.993857 139968416003904 maxtext_utils.py:1889]  decoder/layers/mlp/wi_0/kernel/value
    Shape:     float32[2048,16,7168]
    Physical:  ('fsdp', None, None)
I0422 14:18:56.993909 139968416003904 maxtext_utils.py:1889]  decoder/layers/mlp/wi_1/kernel/value
    Shape:     float32[2048,16,7168]
    Physical:  ('fsdp', None, None)
I0422 14:18:56.993951 139968416003904 maxtext_utils.py:1889]  decoder/layers/mlp/wo/kernel/value
    Shape:     float32[7168,16,2048]
    Physical:  (None, None, 'fsdp')
I0422 14:18:56.993994 139968416003904 maxtext_utils.py:1889]  decoder/layers/post_self_attention_layer_norm/scale/value
    Shape:     float32[2048,16]
    Physical:  (None, None)
I0422 14:18:56.994029 139968416003904 maxtext_utils.py:1889]  decoder/layers/pre_self_attention_layer_norm/scale/value
    Shape:     float32[2048,16]
    Physical:  (None, None)
I0422 14:18:56.994065 139968416003904 maxtext_utils.py:1889]  decoder/layers/self_attention/key/kernel/value
    Shape:     float32[2048,16,16,128]
    Physical:  ('fsdp', None, None, None)
I0422 14:18:56.994101 139968416003904 maxtext_utils.py:1889]  decoder/layers/self_attention/out/kernel/value
    Shape:     float32[16,16,128,2048]
    Physical:  (None, None, None, 'fsdp')
I0422 14:18:56.994135 139968416003904 maxtext_utils.py:1889]  decoder/layers/self_attention/query/kernel/value
    Shape:     float32[2048,16,16,128]
    Physical:  ('fsdp', None, None, None)
I0422 14:18:56.994168 139968416003904 maxtext_utils.py:1889]  decoder/layers/self_attention/value/kernel/value
    Shape:     float32[2048,16,16,128]
    Physical:  ('fsdp', None, None, None)
I0422 14:18:56.994200 139968416003904 maxtext_utils.py:1889]  decoder/logits_dense/kernel/value
    Shape:     float32[2048,32000]
    Physical:  ('fsdp', None)
I0422 14:18:56.994232 139968416003904 maxtext_utils.py:1889]  token_embedder/embedding/value
    Shape:     float32[32000,2048]
    Physical:  (None, 'fsdp')

I0422 14:18:57.399813 139968416003904 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0422 14:18:57.399903 139968416003904 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0422 14:18:57.405190 139968416003904 nnx_decoders.py:465] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0422 14:18:57.405247 139968416003904 nnx_decoders.py:465] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0422 14:18:57.421888 139968416003904 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0422 14:18:57.421957 139968416003904 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0422 14:18:57.438074 139968416003904 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0422 14:18:57.438136 139968416003904 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0422 14:18:57.462439 139968416003904 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 14:18:57.462507 139968416003904 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 14:18:57.478935 139968416003904 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 14:18:57.478999 139968416003904 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 14:18:57.495359 139968416003904 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 14:18:57.495419 139968416003904 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 14:18:57.526171 139968416003904 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0422 14:18:57.526246 139968416003904 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 14:18:57.546519 139968416003904 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0422 14:18:57.546582 139968416003904 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0422 14:19:08.633827 139968416003904 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 14:19:08.636228 139968416003904 metric_logger.py:301] number parameters: 1.104 billion
I0422 14:19:20.170727 139968416003904 checkpointing.py:794] Waiting for step 0 to finish before checkpoint...
I0422 14:19:20.326109 139968416003904 checkpointing.py:798] Waited 0.15535736083984375 seconds for step 0 to finish before starting checkpointing.
I0422 14:19:20.328371 139968416003904 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0422 14:19:20.329923 139968416003904 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 0
I0422 14:19:20.331365 139968416003904 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_02_synthetic/checkpoints/0.
I0422 14:19:21.054693 139968416003904 signaling_client.py:364] Using JaxDistributedSignalingClient
I0422 14:19:21.055678 139968416003904 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array.
I0422 14:19:21.055736 139968416003904 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 14:19:21.338106 139968416003904 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.284292s
I0422 14:19:21.338286 139968416003904 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 5.241 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2943391799926758 s) (per-host)
I0422 14:19:21.338341 139968416003904 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.294406s (batch_requests_ready=0.003710s, total_serialization_initiated=0.290621s, others=0.000075s)
I0422 14:19:21.338441 139968416003904 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.298470s (all_items=0.000018s, per_item={'items': '0.00001764'}, temp_paths=0.298452)
I0422 14:19:21.339262 139968416003904 event_tracking.py:125] [process=5] [async] Finished blocking save in 1.01 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_02_synthetic/checkpoints/0.
I0422 14:19:21.339601 139840748422912 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 14:39:21.339565
I0422 14:19:21.342799 139968416003904 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0422 14:19:21.343049 139839650096896 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save.
I0422 14:19:21.343202 139968416003904 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_02_synthetic/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776867560.3283515, 'wait_for_prev_duration_secs': 6.151199340820312e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776867560.3299625, 'checkpointer_blocking_duration_secs': 1.0097544193267822, 'get_old_steps_start_time': 1776867561.3397422, 'get_old_steps_duration_secs': 2.8133392333984375e-05, 'checkpoint_manager_blocking_start_time': 1776867560.3265536, 'checkpoint_manager_blocking_duration_secs': 1.0166103839874268}
I0422 14:19:21.343310 139968416003904 checkpointing.py:409] Started an asynchronous checkpoint save for step 0
I0422 14:19:21.343375 139968416003904 max_utils.py:750] 
Memstats: After params initialized:
I0422 14:19:21.343422 139968416003904 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_18(process=5,(2,4,0,0))
I0422 14:19:21.343455 139968416003904 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_19(process=5,(3,4,0,0))
I0422 14:19:21.343481 139968416003904 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_22(process=5,(2,5,0,0))
I0422 14:19:21.343505 139968416003904 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_23(process=5,(3,5,0,0))
I0422 14:19:21.658952 139968416003904 metric_logger.py:196] completed step: 0, seconds: 11.533, TFLOP/s/device: 1.178, Tokens/s/device: 177.571, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52786.469
I0422 14:19:21.824287 139968416003904 metric_logger.py:196] completed step: 1, seconds: 1.486, TFLOP/s/device: 9.142, Tokens/s/device: 1378.003, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52786.469
I0422 14:19:22.699009 139968416003904 metric_logger.py:196] completed step: 2, seconds: 0.019, TFLOP/s/device: 701.851, Tokens/s/device: 105790.588, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28632.133
I0422 14:19:22.846449 139968416003904 metric_logger.py:196] completed step: 3, seconds: 0.865, TFLOP/s/device: 15.716, Tokens/s/device: 2368.961, total_weights: 65536, loss: 9.732, lm_loss: 9.732, perplexity: 16855.789
I0422 14:19:23.142306 139968416003904 metric_logger.py:196] completed step: 4, seconds: 0.165, TFLOP/s/device: 82.113, Tokens/s/device: 12377.015, total_weights: 65536, loss: 9.274, lm_loss: 9.274, perplexity: 10661.594
I0422 14:19:23.150035 139968416003904 metric_logger.py:196] completed step: 5, seconds: 0.146, TFLOP/s/device: 93.039, Tokens/s/device: 14023.843, total_weights: 65536, loss: 8.888, lm_loss: 8.888, perplexity: 7245.978
I0422 14:19:24.939276    2796 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0422 14:19:27.058717 139839658489600 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 69 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_02_synthetic/checkpoints/0/items/array_metadatas/process_5
I0422 14:19:45.023202 139968416003904 metric_logger.py:196] completed step: 6, seconds: 0.297, TFLOP/s/device: 45.820, Tokens/s/device: 6906.529, total_weights: 65536, loss: 8.589, lm_loss: 8.589, perplexity: 5371.156
I0422 14:19:45.170829 139968416003904 metric_logger.py:196] completed step: 7, seconds: 21.727, TFLOP/s/device: 0.625, Tokens/s/device: 94.261, total_weights: 65536, loss: 8.380, lm_loss: 8.380, perplexity: 4360.465
I0422 14:19:45.318423 139968416003904 metric_logger.py:196] completed step: 8, seconds: 0.153, TFLOP/s/device: 88.570, Tokens/s/device: 13350.282, total_weights: 65536, loss: 8.251, lm_loss: 8.251, perplexity: 3831.256
I0422 14:19:45.466740 139968416003904 checkpointing.py:794] Waiting for step 9 to finish before checkpoint...
I0422 14:19:45.467423 139968416003904 checkpointing.py:798] Waited 0.00069427490234375 seconds for step 9 to finish before starting checkpointing.
I0422 14:19:45.469383 139968416003904 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0422 14:19:58.700307 139840748422912 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 41.948 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 37.65630340576172 s) (per-host)
I0422 14:19:58.700430 139840748422912 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 37.360194s.
I0422 14:20:07.883390 139840748422912 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 46.543139s.
I0422 14:20:07.883666 139839650096896 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save.
I0422 14:20:07.883798 139839650096896 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save.
I0422 14:20:07.883854 139839650096896 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0422 14:20:07.886330 139839650096896 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0422 14:20:07.886544 139968416003904 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 14:20:07.886703 139968416003904 checkpoint_manager.py:1452] Waiting for previous save to complete took 22.417317 seconds. If this number is high, consider checkpointing less frequently.
I0422 14:20:07.888791 139968416003904 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 9
I0422 14:20:07.890950 139968416003904 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_02_synthetic/checkpoints/9.
I0422 14:20:08.199805 139968416003904 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array.
I0422 14:20:08.199901 139968416003904 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 14:20:08.241425 139968416003904 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.043211s
I0422 14:20:08.241588 139968416003904 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 30.414 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.05071878433227539 s) (per-host)
I0422 14:20:08.241638 139968416003904 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.050779s (batch_requests_ready=0.003056s, total_serialization_initiated=0.047657s, others=0.000065s)
I0422 14:20:08.241751 139968416003904 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.054918s (all_items=0.000014s, per_item={'items': '0.00001431'}, temp_paths=0.054904)
I0422 14:20:08.242414 139968416003904 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_02_synthetic/checkpoints/9.
I0422 14:20:08.242715 139815223801600 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 14:40:08.242682
I0422 14:20:08.244629 139968416003904 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0422 14:20:08.244947 139839650096896 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save.
I0422 14:20:08.245110 139968416003904 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_02_synthetic/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776867585.469354, 'wait_for_prev_duration_secs': 22.417316913604736, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776867607.8888311, 'checkpointer_blocking_duration_secs': 0.3540332317352295, 'get_old_steps_start_time': 1776867608.242887, 'get_old_steps_duration_secs': 2.8848648071289062e-05, 'checkpoint_manager_blocking_start_time': 1776867585.4676714, 'checkpoint_manager_blocking_duration_secs': 22.777402639389038}
I0422 14:20:08.245230 139968416003904 checkpointing.py:409] Started an asynchronous checkpoint save for step 9
I0422 14:20:08.245276 139968416003904 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0422 14:20:13.239950 139839658489600 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 69 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_02_synthetic/checkpoints/9/items/array_metadatas/process_5
I0422 14:20:49.682560 139815223801600 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 38.070 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.49164938926697 s) (per-host)
I0422 14:20:49.682695 139815223801600 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.439863s.
I0422 14:21:16.818398 139815223801600 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 68.575541s.
I0422 14:21:16.818734 139839650096896 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save.
I0422 14:21:16.818865 139839650096896 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save.
I0422 14:21:16.818915 139839650096896 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0422 14:21:16.821951 139839650096896 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0422 14:21:16.822133 139968416003904 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 14:21:16.822327 139968416003904 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0422 14:21:16.823232 139968416003904 metric_logger.py:196] completed step: 9, seconds: 0.148, TFLOP/s/device: 91.787, Tokens/s/device: 13835.127, total_weights: 65536, loss: 8.175, lm_loss: 8.175, perplexity: 3551.438
Per train step:
 Total TFLOPs: 13.59 
 split as 93.93% learnable weight flops and 6.07% attention flops
XPK End: Wed Apr 22 14:21:28 UTC 2026
EXIT_CODE=0