MaxView

XPK Start: Wed Apr 22 22:06:03 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 22:06:28.402304: 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 22:06:28.615382 135125265119040 max_utils.py:273] Attempting to initialize the jax distributed system...
I0422 22:06:37.657827 135125265119040 distributed.py:149] Starting JAX distributed service on [::]:8482
I0422 22:06:37.660207 135125265119040 distributed.py:172] Connecting to JAX distributed service on mt-11-optimizer-offload-hzuls-slice-job-0-0.mt-11-optimizer-offload-hzuls:8482
I0422 22:06:38.810470 135125265119040 max_utils.py:284] Jax distributed system initialized!
I0422 22:06:45.422882 135125265119040 max_utils.py:800] System Information: Jax Version: 0.9.2
I0422 22:06:45.422987 135125265119040 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0422 22:06:45.423027 135125265119040 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 22:06:45.423062 135125265119040 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0422 22:06:46.121821 135125265119040 maxtext_utils.py:1565] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0422 22:06:46.122117 135125265119040 checkpointing.py:677] Setting up checkpoint logger...
I0422 22:06:46.122172 135125265119040 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True
I0422 22:06:46.122217 135125265119040 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0422 22:06:46.122565 135125265119040 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 0x7ae495c7de50>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0422 22:06:49.047062 135125265119040 checkpointing.py:265] Enabling policy for fixed interval checkpointing.
I0422 22:06:49.047327 135125265119040 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 0x7ad201b27950>}, handler_registry=None
I0422 22:06:49.047571 135125265119040 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7ad201b27950>` 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 22:06:49.047620 135125265119040 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7ad201b297f0>` 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 22:06:49.047657 135125265119040 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 0x7ad201b27950>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7ad201b27950>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7ad201b297f0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7ad201b297f0>}).
I0422 22:06:49.047984 135125265119040 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0422 22:06:49.048056 135125265119040 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7ad200feb420> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0422 22:06:50.818998 135125265119040 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_11_optimizer_offload_true/checkpoints
I0422 22:06:50.842408 135125265119040 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_11_optimizer_offload_true/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7ad201b25fa0>
I0422 22:06:50.842546 135125265119040 checkpointing.py:301] Checkpoint manager created!
I0422 22:06:51.778682 135125265119040 nnx_wrappers.py:453] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0422 22:06:51.778805 135125265119040 nnx_wrappers.py:453] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0422 22:06:52.160436 135125265119040 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0422 22:06:52.160530 135125265119040 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0422 22:06:52.177234 135125265119040 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0422 22:06:52.177301 135125265119040 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0422 22:06:52.201180 135125265119040 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 22:06:52.201249 135125265119040 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 22:06:52.218055 135125265119040 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 22:06:52.218142 135125265119040 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 22:06:52.234699 135125265119040 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 22:06:52.234758 135125265119040 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 22:06:52.259763 135125265119040 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0422 22:06:52.259843 135125265119040 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0422 22:06:52.281192 135125265119040 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0422 22:06:52.281261 135125265119040 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0422 22:06:52.494989 135125265119040 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint
I0422 22:06:52.495127 135125265119040 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0422 22:06:54.145451 135125265119040 maxtext_utils.py:1668]  params/params/decoder/decoder_norm/scale
    Shape:     float32[2048]
    Logical:   P('norm',)
    Physical:  (None,)
I0422 22:06:54.145580 135125265119040 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 22:06:54.145634 135125265119040 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 22:06:54.145692 135125265119040 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 22:06:54.145745 135125265119040 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 22:06:54.145784 135125265119040 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 22:06:54.145835 135125265119040 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 22:06:54.145886 135125265119040 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 22:06:54.145926 135125265119040 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 22:06:54.145964 135125265119040 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 22:06:54.146013 135125265119040 maxtext_utils.py:1668]  params/params/decoder/logits_dense/kernel
    Shape:     float32[2048,32000]
    Logical:   P('embed_vocab', 'vocab')
    Physical:  ('fsdp', None)

I0422 22:06:54.146059 135125265119040 maxtext_utils.py:1668]  params/params/token_embedder/embedding
    Shape:     float32[32000,2048]
    Logical:   P('vocab', 'embed_vocab')
    Physical:  (None, 'fsdp')
I0422 22:06:54.646841 135125265119040 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0422 22:06:54.646936 135125265119040 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0422 22:06:54.662425 135125265119040 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0422 22:06:54.662483 135125265119040 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0422 22:07:05.447960 135125265119040 max_utils.py:791] Total memory size: 1.3 GB, Output size: 0.1 GB, Temp size: 1.1 GB, Argument size: 0.1 GB, Host temp size: 0.0 GB.
I0422 22:07:05.448804 135125265119040 metric_logger.py:301] number parameters: 1.104 billion
I0422 22:07:17.171070 135125265119040 checkpointing.py:772] Waiting for step 0 to finish before checkpoint...
I0422 22:07:17.340019 135125265119040 checkpointing.py:776] Waited 0.1689302921295166 seconds for step 0 to finish before starting checkpointing.
I0422 22:07:17.342782 135125265119040 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0422 22:07:17.344464 135125265119040 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 0
I0422 22:07:17.345844 135125265119040 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_11_optimizer_offload_true/checkpoints/0.
I0422 22:07:18.107462 135125265119040 signaling_client.py:364] Using JaxDistributedSignalingClient
I0422 22:07:18.108418 135125265119040 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0422 22:07:18.108475 135125265119040 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 22:07:18.385073 135125265119040 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.277683s
I0422 22:07:18.385260 135125265119040 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.432 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.283982515335083 s) (per-host)
I0422 22:07:18.385315 135125265119040 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.284047s (batch_requests_ready=0.002228s, total_serialization_initiated=0.281747s, others=0.000072s)
I0422 22:07:18.385419 135125265119040 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.288088s (all_items=0.000017s, per_item={'items': '0.00001693'}, temp_paths=0.288071)
I0422 22:07:18.386266 135125265119040 event_tracking.py:125] [process=6] [async] Finished blocking save in 1.04 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_11_optimizer_offload_true/checkpoints/0.
I0422 22:07:18.386548 134991090546432 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 22:27:18.386515
I0422 22:07:18.388566 135125265119040 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0422 22:07:18.388846 134990687893248 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save.
I0422 22:07:18.388998 135125265119040 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_11_optimizer_offload_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776895637.3427627, 'wait_for_prev_duration_secs': 6.318092346191406e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776895637.344505, 'checkpointer_blocking_duration_secs': 1.0421898365020752, 'get_old_steps_start_time': 1776895638.3867218, 'get_old_steps_duration_secs': 2.956390380859375e-05, 'checkpoint_manager_blocking_start_time': 1776895637.3406038, 'checkpoint_manager_blocking_duration_secs': 1.0483558177947998}
I0422 22:07:18.389128 135125265119040 checkpointing.py:408] Started an asynchronous checkpoint save for step 0
I0422 22:07:18.389180 135125265119040 max_utils.py:750] 
Memstats: After params initialized:
I0422 22:07:18.389229 135125265119040 max_utils.py:756] 	Using (GB) 0.17 / 31.25 (0.544000%) on TPU_24(process=6,(0,6,0,0))
I0422 22:07:18.389265 135125265119040 max_utils.py:756] 	Using (GB) 0.17 / 31.25 (0.544000%) on TPU_25(process=6,(1,6,0,0))
I0422 22:07:18.389292 135125265119040 max_utils.py:756] 	Using (GB) 0.17 / 31.25 (0.544000%) on TPU_28(process=6,(0,7,0,0))
I0422 22:07:18.389318 135125265119040 max_utils.py:756] 	Using (GB) 0.17 / 31.25 (0.544000%) on TPU_29(process=6,(1,7,0,0))
I0422 22:07:18.703782 135125265119040 metric_logger.py:196] completed step: 0, seconds: 11.722, TFLOP/s/device: 1.159, Tokens/s/device: 174.712, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0422 22:07:18.885351 135125265119040 metric_logger.py:196] completed step: 1, seconds: 1.531, TFLOP/s/device: 8.874, Tokens/s/device: 1337.600, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0422 22:07:19.299392 135125265119040 metric_logger.py:196] completed step: 2, seconds: 0.019, TFLOP/s/device: 709.325, Tokens/s/device: 106917.254, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28637.129
I0422 22:07:19.462176 135125265119040 metric_logger.py:196] completed step: 3, seconds: 0.414, TFLOP/s/device: 32.833, Tokens/s/device: 4948.964, total_weights: 65536, loss: 9.734, lm_loss: 9.734, perplexity: 16889.047
I0422 22:07:19.788579 135125265119040 metric_logger.py:196] completed step: 4, seconds: 0.169, TFLOP/s/device: 80.553, Tokens/s/device: 12141.765, total_weights: 65536, loss: 9.278, lm_loss: 9.278, perplexity: 10694.968
I0422 22:07:19.794378 135125265119040 metric_logger.py:196] completed step: 5, seconds: 0.163, TFLOP/s/device: 83.440, Tokens/s/device: 12576.994, total_weights: 65536, loss: 8.892, lm_loss: 8.892, perplexity: 7270.520
I0422 22:07:21.503779    2784 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0422 22:07:23.484245 134991040190208 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_11_optimizer_offload_true/checkpoints/0/items/array_metadatas/process_6
I0422 22:07:41.915838 135125265119040 metric_logger.py:196] completed step: 6, seconds: 0.327, TFLOP/s/device: 41.584, Tokens/s/device: 6268.019, total_weights: 65536, loss: 8.592, lm_loss: 8.592, perplexity: 5390.688
I0422 22:07:42.078686 135125265119040 metric_logger.py:196] completed step: 7, seconds: 21.959, TFLOP/s/device: 0.619, Tokens/s/device: 93.264, total_weights: 65536, loss: 8.384, lm_loss: 8.384, perplexity: 4377.010
I0422 22:07:42.241207 135125265119040 metric_logger.py:196] completed step: 8, seconds: 0.168, TFLOP/s/device: 80.886, Tokens/s/device: 12192.000, total_weights: 65536, loss: 8.255, lm_loss: 8.255, perplexity: 3845.943
I0422 22:07:42.403466 135125265119040 checkpointing.py:772] Waiting for step 9 to finish before checkpoint...
I0422 22:07:42.404168 135125265119040 checkpointing.py:776] Waited 0.0007243156433105469 seconds for step 9 to finish before starting checkpointing.
I0422 22:07:42.406321 135125265119040 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0422 22:07:55.878917 134991090546432 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 41.811 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 37.777602672576904 s) (per-host)
I0422 22:07:55.879046 134991090546432 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 37.492387s.
I0422 22:08:03.812993 134991090546432 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 45.426316s.
I0422 22:08:03.813317 134990687893248 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save.
I0422 22:08:03.813442 134990687893248 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save.
I0422 22:08:03.813499 134990687893248 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0422 22:08:03.815773 134990687893248 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0422 22:08:03.815957 135125265119040 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 22:08:03.816113 135125265119040 checkpoint_manager.py:1452] Waiting for previous save to complete took 21.409776 seconds. If this number is high, consider checkpointing less frequently.
I0422 22:08:03.818020 135125265119040 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 9
I0422 22:08:03.820048 135125265119040 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_11_optimizer_offload_true/checkpoints/9.
I0422 22:08:04.523631 135125265119040 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0422 22:08:04.523727 135125265119040 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 22:08:04.562172 135125265119040 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.039505s
I0422 22:08:04.562335 135125265119040 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 35.974 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04287910461425781 s) (per-host)
I0422 22:08:04.562384 135125265119040 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.042938s (batch_requests_ready=0.001797s, total_serialization_initiated=0.041075s, others=0.000065s)
I0422 22:08:04.562471 135125265119040 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.046898s (all_items=0.000016s, per_item={'items': '0.00001574'}, temp_paths=0.046882)
I0422 22:08:04.563203 135125265119040 event_tracking.py:125] [process=6] [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_11_optimizer_offload_true/checkpoints/9.
I0422 22:08:04.563518 134990687893248 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 22:28:04.563484
I0422 22:08:04.565534 135125265119040 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0422 22:08:04.565776 134990151022336 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save.
I0422 22:08:04.565901 135125265119040 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_11_optimizer_offload_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776895662.4062886, 'wait_for_prev_duration_secs': 21.409775733947754, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776895683.8180587, 'checkpointer_blocking_duration_secs': 0.7456018924713135, 'get_old_steps_start_time': 1776895684.563685, 'get_old_steps_duration_secs': 3.147125244140625e-05, 'checkpoint_manager_blocking_start_time': 1776895662.404415, 'checkpoint_manager_blocking_duration_secs': 22.161450386047363}
I0422 22:08:04.566010 135125265119040 checkpointing.py:408] Started an asynchronous checkpoint save for step 9
I0422 22:08:04.566056 135125265119040 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0422 22:08:09.697480 134991040190208 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_11_optimizer_offload_true/checkpoints/9/items/array_metadatas/process_6
I0422 22:08:46.679862 134990687893248 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 37.465 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.16036558151245 s) (per-host)
I0422 22:08:46.679997 134990687893248 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.116367s.
I0422 22:08:55.423032 134990687893248 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 50.859389s.
I0422 22:08:55.423333 134990151022336 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save.
I0422 22:08:55.423454 134990151022336 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save.
I0422 22:08:55.423501 134990151022336 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0422 22:08:55.425221 134990151022336 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0422 22:08:55.425409 135125265119040 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 22:08:55.425561 135125265119040 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0422 22:08:55.426521 135125265119040 metric_logger.py:196] completed step: 9, seconds: 0.163, TFLOP/s/device: 83.583, Tokens/s/device: 12598.503, total_weights: 65536, loss: 8.179, lm_loss: 8.179, perplexity: 3564.739
Per train step:
 Total TFLOPs: 13.59 
 split as 93.93% learnable weight flops and 6.07% attention flops
XPK End: Wed Apr 22 22:09:08 UTC 2026
EXIT_CODE=0