XPK Start: Thu Apr 23 09:38:43 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.
2026-04-23 09:39:08.053444: 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)
I0423 09:39:08.264802 137828534298432 max_utils.py:273] Attempting to initialize the jax distributed system...
I0423 09:39:17.304452 137828534298432 distributed.py:149] Starting JAX distributed service on [::]:8482
I0423 09:39:17.306771 137828534298432 distributed.py:172] Connecting to JAX distributed service on mt-01-base-4ultc-slice-job-0-0.mt-01-base-4ultc:8482
I0423 09:39:18.986263 137828534298432 max_utils.py:284] Jax distributed system initialized!
I0423 09:39:25.028773 137828534298432 max_utils.py:800] System Information: Jax Version: 0.9.2
I0423 09:39:25.028880 137828534298432 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0423 09:39:25.028922 137828534298432 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
I0423 09:39:25.028962 137828534298432 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0423 09:39:25.725377 137828534298432 maxtext_utils.py:1732] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0423 09:39:25.725979 137828534298432 maxtext_utils.py:1732] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0423 09:39:25.726161 137828534298432 checkpointing.py:688] Setting up checkpoint logger...
I0423 09:39:25.726215 137828534298432 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True
I0423 09:39:25.726260 137828534298432 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0423 09:39:25.726600 137828534298432 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 0x7d59fd24fc20>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0423 09:39:29.460740 137828534298432 checkpointing.py:266] Enabling policy for fixed interval checkpointing.
I0423 09:39:29.460978 137828534298432 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 0x7d45b84c9b20>}, handler_registry=None
I0423 09:39:29.461230 137828534298432 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7d45b84c9b20>` 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`.
I0423 09:39:29.461294 137828534298432 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7d58f07b05c0>` 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`.
I0423 09:39:29.461333 137828534298432 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 0x7d45b84c9b20>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7d45b84c9b20>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7d58f07b05c0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7d58f07b05c0>}).
I0423 09:39:29.461684 137828534298432 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0423 09:39:29.461759 137828534298432 async_checkpointer.py:192] [process=5][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7d44d85a5bc0> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0423 09:39:31.151695 137828534298432 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806/linen_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806_01_base/checkpoints
I0423 09:39:31.533826 137828534298432 checkpoint_manager.py:929] [process=5][thread=MainThread] CheckpointManager created, primary_host=0, CheckpointManagerOptions=CheckpointManagerOptions(save_interval_steps=1, max_to_keep=None, keep_time_interval=None, keep_period=None, should_keep_fn=None, best_fn=None, best_mode='max', keep_checkpoints_without_metrics=True, step_prefix=None, step_format_fixed_length=None, step_name_format=None, create=True, cleanup_tmp_directories=False, save_on_steps=frozenset(), single_host_load_and_broadcast=False, todelete_subdir=None, todelete_full_path=None, enable_background_delete=False, read_only=False, enable_async_checkpointing=True, async_options=None, multiprocessing_options=MultiprocessingOptions(primary_host=0, active_processes=None, barrier_sync_key_prefix=None), should_save_fn=None, file_options=FileOptions(path_permission_mode=None), save_root_metadata=True, temporary_path_class=None, save_decision_policy=FixedIntervalPolicy(interval=10), preservation_policy=LatestN(n=None), prevent_write_metrics=False, enable_should_save_is_saving_in_progress_check=True, enable_per_process_directory_creation=False, lightweight_initialize=False), root_directory=gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806/linen_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806_01_base/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7d45b84cb9e0>
I0423 09:39:31.533998 137828534298432 checkpointing.py:302] Checkpoint manager created!
I0423 09:39:32.460258 137828534298432 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0423 09:39:32.460365 137828534298432 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0423 09:39:32.840504 137828534298432 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0423 09:39:32.840597 137828534298432 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0423 09:39:32.856986 137828534298432 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0423 09:39:32.857042 137828534298432 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0423 09:39:32.881310 137828534298432 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0423 09:39:32.881379 137828534298432 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0423 09:39:32.897824 137828534298432 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0423 09:39:32.897885 137828534298432 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0423 09:39:32.914241 137828534298432 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0423 09:39:32.914306 137828534298432 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0423 09:39:32.939217 137828534298432 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0423 09:39:32.939287 137828534298432 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0423 09:39:32.960369 137828534298432 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0423 09:39:32.960438 137828534298432 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0423 09:39:33.177486 137828534298432 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint
I0423 09:39:33.177592 137828534298432 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0423 09:39:34.624887 137828534298432 maxtext_utils.py:1835] params/params/decoder/decoder_norm/scale
Shape: float32[2048]
Logical: P('norm',)
Physical: (None,)
I0423 09:39:34.625016 137828534298432 maxtext_utils.py:1835] params/params/decoder/layers/mlp/wi_0/kernel
Shape: float32[2048,16,7168]
Logical: P('embed', 'layers', 'mlp')
Physical: ('fsdp', None, None)
I0423 09:39:34.625070 137828534298432 maxtext_utils.py:1835] params/params/decoder/layers/mlp/wi_1/kernel
Shape: float32[2048,16,7168]
Logical: P('embed', 'layers', 'mlp')
Physical: ('fsdp', None, None)
I0423 09:39:34.625128 137828534298432 maxtext_utils.py:1835] params/params/decoder/layers/mlp/wo/kernel
Shape: float32[7168,16,2048]
Logical: P('mlp', 'layers', 'embed')
Physical: (None, None, 'fsdp')
I0423 09:39:34.625188 137828534298432 maxtext_utils.py:1835] params/params/decoder/layers/post_self_attention_layer_norm/scale
Shape: float32[2048,16]
Logical: P('norm', 'layers')
Physical: (None, None)
I0423 09:39:34.625228 137828534298432 maxtext_utils.py:1835] params/params/decoder/layers/pre_self_attention_layer_norm/scale
Shape: float32[2048,16]
Logical: P('norm', 'layers')
Physical: (None, None)
I0423 09:39:34.625305 137828534298432 maxtext_utils.py:1835] 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)
I0423 09:39:34.625377 137828534298432 maxtext_utils.py:1835] 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')
I0423 09:39:34.625421 137828534298432 maxtext_utils.py:1835] 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)
I0423 09:39:34.625466 137828534298432 maxtext_utils.py:1835] 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)
I0423 09:39:34.625515 137828534298432 maxtext_utils.py:1835] params/params/decoder/logits_dense/kernel
Shape: float32[2048,32000]
Logical: P('embed_vocab', 'vocab')
Physical: ('fsdp', None)
I0423 09:39:34.625566 137828534298432 maxtext_utils.py:1835] params/params/token_embedder/embedding
Shape: float32[32000,2048]
Logical: P('vocab', 'embed_vocab')
Physical: (None, 'fsdp')
I0423 09:39:35.119101 137828534298432 train.py:157] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0423 09:39:35.119196 137828534298432 train.py:157] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0423 09:39:35.134859 137828534298432 train.py:164] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0423 09:39:35.134930 137828534298432 train.py:164] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0423 09:39:46.175080 137828534298432 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.
I0423 09:39:46.175812 137828534298432 metric_logger.py:301] number parameters: 1.104 billion
I0423 09:39:57.711232 137828534298432 checkpointing.py:794] Waiting for step 0 to finish before checkpoint...
I0423 09:39:57.864979 137828534298432 checkpointing.py:798] Waited 0.15372967720031738 seconds for step 0 to finish before starting checkpointing.
I0423 09:39:57.867517 137828534298432 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0423 09:39:57.869216 137828534298432 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 0
I0423 09:39:57.870677 137828534298432 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806/linen_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806_01_base/checkpoints/0.
I0423 09:39:59.064054 137828534298432 signaling_client.py:364] Using JaxDistributedSignalingClient
I0423 09:39:59.064940 137828534298432 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0423 09:39:59.065000 137828534298432 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
I0423 09:39:59.338354 137828534298432 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.274374s
I0423 09:39:59.338529 137828534298432 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 5.508 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2800564765930176 s) (per-host)
I0423 09:39:59.338583 137828534298432 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.280120s (batch_requests_ready=0.002336s, total_serialization_initiated=0.277712s, others=0.000072s)
I0423 09:39:59.338689 137828534298432 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.285352s (all_items=0.000018s, per_item={'items': '0.00001764'}, temp_paths=0.285334)
I0423 09:39:59.339580 137828534298432 event_tracking.py:125] [process=5] [async] Finished blocking save in 1.47 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806/linen_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806_01_base/checkpoints/0.
I0423 09:39:59.339904 137698291472128 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 09:59:59.339860
I0423 09:39:59.774248 137828534298432 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0423 09:39:59.774681 137699361703680 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save.
I0423 09:39:59.774829 137828534298432 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806/linen_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806_01_base/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776937197.8675, 'wait_for_prev_duration_secs': 5.793571472167969e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776937197.8692586, 'checkpointer_blocking_duration_secs': 1.470757246017456, 'get_old_steps_start_time': 1776937199.3400416, 'get_old_steps_duration_secs': 3.147125244140625e-05, 'checkpoint_manager_blocking_start_time': 1776937197.8653824, 'checkpoint_manager_blocking_duration_secs': 1.9094033241271973}
I0423 09:39:59.775004 137828534298432 checkpointing.py:409] Started an asynchronous checkpoint save for step 0
I0423 09:39:59.775060 137828534298432 max_utils.py:750]
Memstats: After params initialized:
I0423 09:39:59.775119 137828534298432 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_18(process=5,(2,4,0,0))
I0423 09:39:59.775151 137828534298432 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_19(process=5,(3,4,0,0))
I0423 09:39:59.775179 137828534298432 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_22(process=5,(2,5,0,0))
I0423 09:39:59.775205 137828534298432 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_23(process=5,(3,5,0,0))
I0423 09:40:00.092094 137828534298432 metric_logger.py:196] completed step: 0, seconds: 11.535, TFLOP/s/device: 1.178, Tokens/s/device: 177.542, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0423 09:40:00.266618 137828534298432 metric_logger.py:196] completed step: 1, seconds: 2.379, TFLOP/s/device: 5.710, Tokens/s/device: 860.734, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0423 09:40:00.738634 137828534298432 metric_logger.py:196] completed step: 2, seconds: 0.027, TFLOP/s/device: 498.098, Tokens/s/device: 75078.818, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28637.129
I0423 09:40:00.886295 137828534298432 metric_logger.py:196] completed step: 3, seconds: 0.472, TFLOP/s/device: 28.783, Tokens/s/device: 4338.533, total_weights: 65536, loss: 9.734, lm_loss: 9.734, perplexity: 16889.203
I0423 09:40:01.181428 137828534298432 metric_logger.py:196] completed step: 4, seconds: 0.153, TFLOP/s/device: 88.558, Tokens/s/device: 13348.455, total_weights: 65536, loss: 9.277, lm_loss: 9.277, perplexity: 10694.614
I0423 09:40:01.187482 137828534298432 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.179, Tokens/s/device: 13894.260, total_weights: 65536, loss: 8.892, lm_loss: 8.892, perplexity: 7270.717
I0423 09:40:02.473685 2856 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0423 09:40:05.785338 137698299864832 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806/linen_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806_01_base/checkpoints/0/items/array_metadatas/process_5
I0423 09:40:23.322725 137828534298432 metric_logger.py:196] completed step: 6, seconds: 0.296, TFLOP/s/device: 45.948, Tokens/s/device: 6925.751, total_weights: 65536, loss: 8.592, lm_loss: 8.592, perplexity: 5390.759
I0423 09:40:23.470101 137828534298432 metric_logger.py:196] completed step: 7, seconds: 21.988, TFLOP/s/device: 0.618, Tokens/s/device: 93.140, total_weights: 65536, loss: 8.384, lm_loss: 8.384, perplexity: 4376.905
I0423 09:40:23.617408 137828534298432 metric_logger.py:196] completed step: 8, seconds: 0.152, TFLOP/s/device: 89.190, Tokens/s/device: 13443.613, total_weights: 65536, loss: 8.255, lm_loss: 8.255, perplexity: 3846.406
I0423 09:40:23.763942 137828534298432 checkpointing.py:794] Waiting for step 9 to finish before checkpoint...
I0423 09:40:23.764606 137828534298432 checkpointing.py:798] Waited 0.0006868839263916016 seconds for step 9 to finish before starting checkpointing.
I0423 09:40:23.767349 137828534298432 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0423 09:40:36.704344 137698291472128 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 41.959 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 37.64581871032715 s) (per-host)
I0423 09:40:36.704524 137698291472128 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 37.363979s.
I0423 09:40:44.817902 137698291472128 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 45.477342s.
I0423 09:40:44.818104 137699361703680 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save.
I0423 09:40:44.818160 137699361703680 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save.
I0423 09:40:44.818213 137699361703680 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0423 09:40:44.820084 137699361703680 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0423 09:40:44.820256 137828534298432 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.
W0423 09:40:44.820393 137828534298432 checkpoint_manager.py:1452] Waiting for previous save to complete took 21.053044 seconds. If this number is high, consider checkpointing less frequently.
I0423 09:40:44.822226 137828534298432 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 9
I0423 09:40:44.824230 137828534298432 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806/linen_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806_01_base/checkpoints/9.
I0423 09:40:45.533905 137828534298432 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0423 09:40:45.534000 137828534298432 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
I0423 09:40:45.567435 137828534298432 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.034571s
I0423 09:40:45.567598 137828534298432 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 40.454 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.0381319522857666 s) (per-host)
I0423 09:40:45.567648 137828534298432 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.038191s (batch_requests_ready=0.001899s, total_serialization_initiated=0.036225s, others=0.000067s)
I0423 09:40:45.567755 137828534298432 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.042555s (all_items=0.000016s, per_item={'items': '0.00001621'}, temp_paths=0.042539)
I0423 09:40:45.568477 137828534298432 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.75 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806/linen_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806_01_base/checkpoints/9.
I0423 09:40:45.568820 137699361703680 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 10:00:45.568782
I0423 09:40:45.570796 137828534298432 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0423 09:40:45.571095 137698866099968 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save.
I0423 09:40:45.571230 137828534298432 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806/linen_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806_01_base/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776937223.7673194, 'wait_for_prev_duration_secs': 21.053044080734253, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776937244.8222647, 'checkpointer_blocking_duration_secs': 0.7467010021209717, 'get_old_steps_start_time': 1776937245.5689886, 'get_old_steps_duration_secs': 3.170967102050781e-05, 'checkpoint_manager_blocking_start_time': 1776937223.7648518, 'checkpoint_manager_blocking_duration_secs': 21.806342601776123}
I0423 09:40:45.571402 137828534298432 checkpointing.py:409] Started an asynchronous checkpoint save for step 9
I0423 09:40:45.571449 137828534298432 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0423 09:40:52.058676 137698299864832 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806/linen_xpk_feat_nnx_trainstate_and_training_loop_20260423_093806_01_base/checkpoints/9/items/array_metadatas/process_5
I0423 09:41:27.812899 137699361703680 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 37.357 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.28339195251465 s) (per-host)
I0423 09:41:27.813035 137699361703680 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.244102s.
I0423 09:41:38.207780 137699361703680 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 52.638832s.
I0423 09:41:38.208065 137698866099968 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save.
I0423 09:41:38.208180 137698866099968 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save.
I0423 09:41:38.208231 137698866099968 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0423 09:41:38.210164 137698866099968 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0423 09:41:38.210341 137828534298432 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.
I0423 09:41:38.210490 137828534298432 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0423 09:41:38.211419 137828534298432 metric_logger.py:196] completed step: 9, seconds: 0.147, TFLOP/s/device: 92.222, Tokens/s/device: 13900.673, 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: Thu Apr 23 09:41:48 UTC 2026
EXIT_CODE=0