XPK Start: Thu Apr 23 09:47:30 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 09:47:54.809495: 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 09:47:55.020752 134646672095040 max_utils.py:273] Attempting to initialize the jax distributed system...
I0423 09:48:04.061479 134646672095040 distributed.py:149] Starting JAX distributed service on [::]:8482
I0423 09:48:04.063802 134646672095040 distributed.py:172] Connecting to JAX distributed service on mt-04-int8-keb63-slice-job-0-0.mt-04-int8-keb63:8482
I0423 09:48:05.668511 134646672095040 max_utils.py:284] Jax distributed system initialized!
I0423 09:48:10.925167 134646672095040 max_utils.py:800] System Information: Jax Version: 0.9.2
I0423 09:48:10.925278 134646672095040 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0423 09:48:10.925319 134646672095040 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 09:48:10.925356 134646672095040 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0423 09:48:11.618414 134646672095040 maxtext_utils.py:1732] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0423 09:48:11.618998 134646672095040 maxtext_utils.py:1732] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0423 09:48:11.619299 134646672095040 checkpointing.py:688] Setting up checkpoint logger...
I0423 09:48:11.619352 134646672095040 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True
I0423 09:48:11.619396 134646672095040 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0423 09:48:11.619747 134646672095040 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 0x7a753e91d100>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0423 09:48:14.502756 134646672095040 checkpointing.py:266] Enabling policy for fixed interval checkpointing.
I0423 09:48:14.502996 134646672095040 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 0x7a61b8675d00>}, handler_registry=None
I0423 09:48:14.503235 134646672095040 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7a61b8675d00>` 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 09:48:14.503283 134646672095040 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7a61b867de80>` 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 09:48:14.503318 134646672095040 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 0x7a61b8675d00>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7a61b8675d00>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7a61b867de80>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7a61b867de80>}).
I0423 09:48:14.503660 134646672095040 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0423 09:48:14.503732 134646672095040 async_checkpointer.py:192] [process=5][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7a61a0281d00> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0423 09:48:16.041319 134646672095040 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_04_int8/checkpoints
I0423 09:48:16.498122 134646672095040 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_04_int8/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7a61b8676d50>
I0423 09:48:16.498291 134646672095040 checkpointing.py:302] Checkpoint manager created!
I0423 09:48:17.637570 134646672095040 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0423 09:48:17.637690 134646672095040 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0423 09:48:18.024961 134646672095040 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0423 09:48:18.025057 134646672095040 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0423 09:48:18.041596 134646672095040 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0423 09:48:18.041670 134646672095040 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0423 09:48:18.107768 134646672095040 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 09:48:18.107857 134646672095040 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0423 09:48:18.124485 134646672095040 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 09:48:18.124549 134646672095040 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0423 09:48:18.141265 134646672095040 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 09:48:18.141325 134646672095040 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0423 09:48:18.167077 134646672095040 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0423 09:48:18.167146 134646672095040 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0423 09:48:18.233147 134646672095040 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0423 09:48:18.233237 134646672095040 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0423 09:48:18.751723 134646672095040 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint
I0423 09:48:18.751835 134646672095040 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0423 09:48:21.206750 134646672095040 maxtext_utils.py:1835] params/params/decoder/decoder_norm/scale
Shape: float32[2048]
Logical: P('norm',)
Physical: (None,)
I0423 09:48:21.206880 134646672095040 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 09:48:21.206941 134646672095040 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 09:48:21.206999 134646672095040 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 09:48:21.207054 134646672095040 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 09:48:21.207094 134646672095040 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 09:48:21.207148 134646672095040 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 09:48:21.207203 134646672095040 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 09:48:21.207244 134646672095040 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 09:48:21.207279 134646672095040 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 09:48:21.207326 134646672095040 maxtext_utils.py:1835] params/params/decoder/logits_dense/kernel
Shape: float32[2048,32000]
Logical: P('embed_vocab', 'vocab')
Physical: ('fsdp', None)
I0423 09:48:21.207374 134646672095040 maxtext_utils.py:1835] params/params/token_embedder/embedding
Shape: float32[32000,2048]
Logical: P('vocab', 'embed_vocab')
Physical: (None, 'fsdp')
I0423 09:48:22.608870 134646672095040 train.py:157] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0423 09:48:22.608965 134646672095040 train.py:157] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0423 09:48:22.625127 134646672095040 train.py:164] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0423 09:48:22.625187 134646672095040 train.py:164] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0423 09:48:36.526411 134646672095040 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.
I0423 09:48:36.527305 134646672095040 metric_logger.py:301] number parameters: 1.104 billion
I0423 09:48:51.210848 134646672095040 checkpointing.py:794] Waiting for step 0 to finish before checkpoint...
I0423 09:48:51.449306 134646672095040 checkpointing.py:798] Waited 0.23843598365783691 seconds for step 0 to finish before starting checkpointing.
I0423 09:48:51.454065 134646672095040 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0423 09:48:51.455356 134646672095040 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 0
I0423 09:48:51.456816 134646672095040 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_04_int8/checkpoints/0.
I0423 09:48:52.045219 134646672095040 signaling_client.py:364] Using JaxDistributedSignalingClient
I0423 09:48:52.046275 134646672095040 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0423 09:48:52.046332 134646672095040 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 09:48:52.326930 134646672095040 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.281784s
I0423 09:48:52.327103 134646672095040 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 5.369 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2873368263244629 s) (per-host)
I0423 09:48:52.327158 134646672095040 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.287402s (batch_requests_ready=0.002347s, total_serialization_initiated=0.284981s, others=0.000073s)
I0423 09:48:52.327253 134646672095040 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.291705s (all_items=0.000034s, per_item={'items': '0.00003386'}, temp_paths=0.291671)
I0423 09:48:52.328021 134646672095040 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.87 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_04_int8/checkpoints/0.
I0423 09:48:52.328320 134516938921728 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 10:08:52.328284
I0423 09:48:52.331547 134646672095040 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0423 09:48:52.331835 134514768582400 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save.
I0423 09:48:52.331992 134646672095040 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_04_int8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776937731.4540455, 'wait_for_prev_duration_secs': 6.175041198730469e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776937731.4553933, 'checkpointer_blocking_duration_secs': 0.8730790615081787, 'get_old_steps_start_time': 1776937732.3284953, 'get_old_steps_duration_secs': 2.9802322387695312e-05, 'checkpoint_manager_blocking_start_time': 1776937731.4498613, 'checkpoint_manager_blocking_duration_secs': 0.8820915222167969}
I0423 09:48:52.332098 134646672095040 checkpointing.py:409] Started an asynchronous checkpoint save for step 0
I0423 09:48:52.332149 134646672095040 max_utils.py:750]
Memstats: After params initialized:
I0423 09:48:52.332204 134646672095040 max_utils.py:756] Using (GB) 0.44 / 31.25 (1.408000%) on TPU_18(process=5,(2,4,0,0))
I0423 09:48:52.332237 134646672095040 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_19(process=5,(3,4,0,0))
I0423 09:48:52.332267 134646672095040 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_22(process=5,(2,5,0,0))
I0423 09:48:52.332292 134646672095040 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_23(process=5,(3,5,0,0))
I0423 09:48:52.658156 134646672095040 metric_logger.py:196] completed step: 0, seconds: 14.683, TFLOP/s/device: 0.925, Tokens/s/device: 139.477, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52796.277
I0423 09:48:52.895756 134646672095040 metric_logger.py:196] completed step: 1, seconds: 1.446, TFLOP/s/device: 9.398, Tokens/s/device: 1416.601, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52796.277
I0423 09:48:53.305042 134646672095040 metric_logger.py:196] completed step: 2, seconds: 0.009, TFLOP/s/device: 1572.039, Tokens/s/device: 236954.761, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28634.820
I0423 09:48:53.534561 134646672095040 metric_logger.py:196] completed step: 3, seconds: 0.410, TFLOP/s/device: 33.175, Tokens/s/device: 5000.562, total_weights: 65536, loss: 9.731, lm_loss: 9.731, perplexity: 16827.199
I0423 09:48:53.994313 134646672095040 metric_logger.py:196] completed step: 4, seconds: 0.235, TFLOP/s/device: 57.877, Tokens/s/device: 8723.803, total_weights: 65536, loss: 9.272, lm_loss: 9.272, perplexity: 10638.531
I0423 09:48:53.999894 134646672095040 metric_logger.py:196] completed step: 5, seconds: 0.230, TFLOP/s/device: 59.188, Tokens/s/device: 8921.415, total_weights: 65536, loss: 8.887, lm_loss: 8.887, perplexity: 7233.941
I0423 09:48:55.647673 2893 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0423 09:48:58.153028 134514776975104 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_04_int8/checkpoints/0/items/array_metadatas/process_5
I0423 09:49:24.004188 134646672095040 metric_logger.py:196] completed step: 6, seconds: 0.460, TFLOP/s/device: 29.547, Tokens/s/device: 4453.636, total_weights: 65536, loss: 8.588, lm_loss: 8.588, perplexity: 5365.468
I0423 09:49:24.233766 134646672095040 metric_logger.py:196] completed step: 7, seconds: 29.776, TFLOP/s/device: 0.456, Tokens/s/device: 68.780, total_weights: 65536, loss: 8.380, lm_loss: 8.380, perplexity: 4358.779
I0423 09:49:24.463042 134646672095040 metric_logger.py:196] completed step: 8, seconds: 0.234, TFLOP/s/device: 58.160, Tokens/s/device: 8766.485, total_weights: 65536, loss: 8.251, lm_loss: 8.251, perplexity: 3831.453
I0423 09:49:24.693262 134646672095040 checkpointing.py:794] Waiting for step 9 to finish before checkpoint...
I0423 09:49:24.693889 134646672095040 checkpointing.py:798] Waited 0.0006482601165771484 seconds for step 9 to finish before starting checkpointing.
I0423 09:49:24.695929 134646672095040 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0423 09:49:25.717998 134516938921728 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 46.903 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 33.6781964302063 s) (per-host)
I0423 09:49:25.718108 134516938921728 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 33.389679s.
I0423 09:49:36.566139 134516938921728 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 44.237692s.
I0423 09:49:36.566416 134514768582400 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save.
I0423 09:49:36.566537 134514768582400 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save.
I0423 09:49:36.566588 134514768582400 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0423 09:49:36.568584 134514768582400 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0423 09:49:36.568764 134646672095040 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 09:49:36.568896 134646672095040 checkpoint_manager.py:1452] Waiting for previous save to complete took 11.872968 seconds. If this number is high, consider checkpointing less frequently.
I0423 09:49:36.570779 134646672095040 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 9
I0423 09:49:36.572777 134646672095040 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_04_int8/checkpoints/9.
I0423 09:49:37.292920 134646672095040 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0423 09:49:37.293015 134646672095040 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 09:49:37.335006 134646672095040 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.043913s
I0423 09:49:37.335175 134646672095040 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 32.462 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.047519683837890625 s) (per-host)
I0423 09:49:37.335233 134646672095040 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.047587s (batch_requests_ready=0.001941s, total_serialization_initiated=0.045572s, others=0.000075s)
I0423 09:49:37.335331 134646672095040 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.051857s (all_items=0.000016s, per_item={'items': '0.00001597'}, temp_paths=0.051841)
I0423 09:49:37.335986 134646672095040 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.77 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_04_int8/checkpoints/9.
I0423 09:49:37.336313 134514776975104 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 10:09:37.336275
I0423 09:49:37.338023 134646672095040 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0423 09:49:37.338263 134514768582400 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save.
I0423 09:49:37.338373 134646672095040 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_04_int8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776937764.695898, 'wait_for_prev_duration_secs': 11.872968196868896, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776937776.5708165, 'checkpointer_blocking_duration_secs': 0.7656452655792236, 'get_old_steps_start_time': 1776937777.3364816, 'get_old_steps_duration_secs': 2.7894973754882812e-05, 'checkpoint_manager_blocking_start_time': 1776937764.6941168, 'checkpoint_manager_blocking_duration_secs': 12.644220352172852}
I0423 09:49:37.338540 134646672095040 checkpointing.py:409] Started an asynchronous checkpoint save for step 9
I0423 09:49:37.338585 134646672095040 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0423 09:49:43.499173 134491578238720 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_04_int8/checkpoints/9/items/array_metadatas/process_5
I0423 09:50:18.958897 134514776975104 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 37.906 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.67120051383972 s) (per-host)
I0423 09:50:18.959017 134514776975104 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.622589s.
I0423 09:50:28.494360 134514776975104 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 51.157916s.
I0423 09:50:28.494672 134514768582400 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save.
I0423 09:50:28.494793 134514768582400 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save.
I0423 09:50:28.494842 134514768582400 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0423 09:50:28.496629 134514768582400 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0423 09:50:28.496833 134646672095040 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 09:50:28.496979 134646672095040 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0423 09:50:28.497973 134646672095040 metric_logger.py:196] completed step: 9, seconds: 0.229, TFLOP/s/device: 59.230, Tokens/s/device: 8927.793, total_weights: 65536, loss: 8.175, lm_loss: 8.175, perplexity: 3552.333
Per train step:
Total TFLOPs: 13.59
split as 93.93% learnable weight flops and 6.07% attention flops
XPK End: Thu Apr 23 09:50:40 UTC 2026
EXIT_CODE=0