XPK Start: Fri Apr 24 09:27:48 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. 2026-04-24 09:28:13.055145: 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) I0424 09:28:13.264616 138400798861120 max_utils.py:273] Attempting to initialize the jax distributed system... I0424 09:28:22.305208 138400798861120 distributed.py:149] Starting JAX distributed service on [::]:8482 I0424 09:28:22.307647 138400798861120 distributed.py:172] Connecting to JAX distributed service on mt-07-eval-1oil7-slice-job-0-0.mt-07-eval-1oil7:8482 I0424 09:28:23.777455 138400798861120 max_utils.py:284] Jax distributed system initialized! I0424 09:28:29.896358 138400798861120 max_utils.py:800] System Information: Jax Version: 0.9.2 I0424 09:28:29.896465 138400798861120 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0424 09:28:29.896506 138400798861120 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 I0424 09:28:29.896543 138400798861120 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0424 09:28:30.595534 138400798861120 maxtext_utils.py:1732] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0424 09:28:30.596131 138400798861120 maxtext_utils.py:1732] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0424 09:28:30.596316 138400798861120 checkpointing.py:688] Setting up checkpoint logger... I0424 09:28:30.596366 138400798861120 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0424 09:28:30.596409 138400798861120 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0424 09:28:30.596740 138400798861120 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 0x7ddf5b7171d0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0424 09:28:33.607093 138400798861120 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0424 09:28:33.607325 138400798861120 checkpoint_manager.py:708] [process=4][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7dcb040f66f0>}, handler_registry=None I0424 09:28:33.607567 138400798861120 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7dcb040f66f0>` 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`. I0424 09:28:33.607617 138400798861120 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7dcb040f9f70>` 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`. I0424 09:28:33.607656 138400798861120 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 0x7dcb040f66f0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7dcb040f66f0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7dcb040f9f70>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7dcb040f9f70>}). I0424 09:28:33.607994 138400798861120 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0424 09:28:33.608064 138400798861120 async_checkpointer.py:192] [process=4][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7dcae4291bc0> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0424 09:28:34.620416 138400798861120 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312/linen_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_07_eval/checkpoints I0424 09:28:34.966947 138400798861120 checkpoint_manager.py:929] [process=4][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_20260424_091312/linen_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_07_eval/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7dcb040f7dd0> I0424 09:28:34.967117 138400798861120 checkpointing.py:302] Checkpoint manager created! I0424 09:28:35.899006 138400798861120 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0424 09:28:35.899105 138400798861120 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 09:28:36.278013 138400798861120 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0424 09:28:36.278101 138400798861120 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 09:28:36.294461 138400798861120 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0424 09:28:36.294523 138400798861120 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 09:28:36.318169 138400798861120 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 09:28:36.318235 138400798861120 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 09:28:36.334603 138400798861120 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 09:28:36.334661 138400798861120 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 09:28:36.351058 138400798861120 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 09:28:36.351123 138400798861120 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 09:28:36.376324 138400798861120 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0424 09:28:36.376393 138400798861120 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 09:28:36.397033 138400798861120 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0424 09:28:36.397094 138400798861120 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0424 09:28:36.614061 138400798861120 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0424 09:28:36.614171 138400798861120 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0424 09:28:38.033782 138400798861120 maxtext_utils.py:1835] params/params/decoder/decoder_norm/scale Shape: float32[2048] Logical: P('norm',) Physical: (None,) I0424 09:28:38.033935 138400798861120 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) I0424 09:28:38.034005 138400798861120 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) I0424 09:28:38.034079 138400798861120 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') I0424 09:28:38.034145 138400798861120 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) I0424 09:28:38.034195 138400798861120 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) I0424 09:28:38.034265 138400798861120 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) I0424 09:28:38.034324 138400798861120 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') I0424 09:28:38.034362 138400798861120 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) I0424 09:28:38.034397 138400798861120 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) I0424 09:28:38.034441 138400798861120 maxtext_utils.py:1835] params/params/decoder/logits_dense/kernel Shape: float32[2048,32000] Logical: P('embed_vocab', 'vocab') Physical: ('fsdp', None) I0424 09:28:38.034490 138400798861120 maxtext_utils.py:1835] params/params/token_embedder/embedding Shape: float32[32000,2048] Logical: P('vocab', 'embed_vocab') Physical: (None, 'fsdp') I0424 09:28:38.525618 138400798861120 train.py:157] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0424 09:28:38.525714 138400798861120 train.py:157] train/xent Physical: float32[32,2048]............................................ ('fsdp', None). I0424 09:28:38.541313 138400798861120 train.py:164] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0424 09:28:38.541383 138400798861120 train.py:164] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None). I0424 09:28:49.448736 138400798861120 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. I0424 09:28:49.449532 138400798861120 metric_logger.py:301] number parameters: 1.104 billion I0424 09:29:00.661892 138400798861120 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0424 09:29:00.949544 138400798861120 checkpointing.py:798] Waited 0.2876429557800293 seconds for step 0 to finish before starting checkpointing. I0424 09:29:00.952240 138400798861120 checkpoint_manager.py:2009] [process=4][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 09:29:00.954107 138400798861120 checkpoint_manager.py:1512] [process=4] Saving checkpoint at step 0 I0424 09:29:00.955606 138400798861120 event_tracking.py:70] [process=4] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312/linen_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_07_eval/checkpoints/0. I0424 09:29:01.314000 138400798861120 signaling_client.py:364] Using JaxDistributedSignalingClient I0424 09:29:01.314843 138400798861120 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0424 09:29:01.314913 138400798861120 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 I0424 09:29:01.589625 138400798861120 base_pytree_checkpoint_handler.py:154] [process=4][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.275696s I0424 09:29:01.589800 138400798861120 base_pytree_checkpoint_handler.py:130] [process=4] /jax/orbax/write/blocking_gbytes_per_sec: 5.486 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2812082767486572 s) (per-host) I0424 09:29:01.589852 138400798861120 base_pytree_checkpoint_handler.py:768] [process=4][thread=MainThread] Initiated Pytree async_save. Time taken: 0.281271s (batch_requests_ready=0.002165s, total_serialization_initiated=0.279035s, others=0.000071s) I0424 09:29:01.589963 138400798861120 composite_checkpoint_handler.py:715] [process=4][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.285441s (all_items=0.000018s, per_item={'items': '0.00001812'}, temp_paths=0.285423) I0424 09:29:01.590779 138400798861120 event_tracking.py:125] [process=4] [async] Finished blocking save in 0.64 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312/linen_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_07_eval/checkpoints/0. I0424 09:29:01.591140 138272858777344 async_checkpointer.py:76] [process=4][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 09:49:01.591103 I0424 09:29:01.609101 138400798861120 checkpoint_manager.py:1560] [process=4][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0424 09:29:01.609438 138270767838976 async_checkpointer.py:280] [process=4][thread=save_finalize] Waiting for background save thread=async_save. I0424 09:29:01.609609 138400798861120 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312/linen_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777022940.952222, 'wait_for_prev_duration_secs': 6.532669067382812e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777022940.9541461, 'checkpointer_blocking_duration_secs': 0.6371538639068604, 'get_old_steps_start_time': 1777022941.5913267, 'get_old_steps_duration_secs': 3.0279159545898438e-05, 'checkpoint_manager_blocking_start_time': 1777022940.9500766, 'checkpoint_manager_blocking_duration_secs': 0.6594834327697754} I0424 09:29:01.609735 138400798861120 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0424 09:29:01.609796 138400798861120 max_utils.py:750] Memstats: After params initialized: I0424 09:29:01.609856 138400798861120 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_16(process=4,(0,4,0,0)) I0424 09:29:01.609911 138400798861120 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_17(process=4,(1,4,0,0)) I0424 09:29:01.609942 138400798861120 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_20(process=4,(0,5,0,0)) I0424 09:29:01.609966 138400798861120 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_21(process=4,(1,5,0,0)) I0424 09:29:01.924781 138400798861120 metric_logger.py:196] completed step: 0, seconds: 11.212, TFLOP/s/device: 1.212, Tokens/s/device: 182.657, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875 I0424 09:29:02.104967 138400798861120 metric_logger.py:196] completed step: 1, seconds: 1.261, TFLOP/s/device: 10.772, Tokens/s/device: 1623.736, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875 I0424 09:29:02.546332 138400798861120 metric_logger.py:196] completed step: 2, seconds: 0.033, TFLOP/s/device: 410.611, Tokens/s/device: 61891.810, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28637.129 I0424 09:29:02.693911 138400798861120 metric_logger.py:196] completed step: 3, seconds: 0.441, TFLOP/s/device: 30.779, Tokens/s/device: 4639.310, total_weights: 65536, loss: 9.734, lm_loss: 9.734, perplexity: 16889.203 I0424 09:29:02.989085 138400798861120 metric_logger.py:196] completed step: 4, seconds: 0.153, TFLOP/s/device: 88.731, Tokens/s/device: 13374.432, total_weights: 65536, loss: 9.277, lm_loss: 9.277, perplexity: 10694.614 I0424 09:29:02.995001 138400798861120 metric_logger.py:196] completed step: 5, seconds: 0.148, TFLOP/s/device: 92.057, Tokens/s/device: 13875.809, total_weights: 65536, loss: 8.892, lm_loss: 8.892, perplexity: 7270.717 I0424 09:29:05.357980 2803 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0424 09:29:07.541814 138271249745664 array_metadata_store.py:203] [process=4][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312/linen_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_07_eval/checkpoints/0/items/array_metadatas/process_4 I0424 09:29:24.722748 138400798861120 metric_logger.py:196] completed step: 6, seconds: 0.296, TFLOP/s/device: 45.971, Tokens/s/device: 6929.219, total_weights: 65536, loss: 8.592, lm_loss: 8.592, perplexity: 5390.759 I0424 09:29:24.869746 138400798861120 metric_logger.py:196] completed step: 7, seconds: 21.580, TFLOP/s/device: 0.630, Tokens/s/device: 94.902, total_weights: 65536, loss: 8.384, lm_loss: 8.384, perplexity: 4376.905 I0424 09:29:25.017195 138400798861120 metric_logger.py:196] completed step: 8, seconds: 0.153, TFLOP/s/device: 88.693, Tokens/s/device: 13368.757, total_weights: 65536, loss: 8.255, lm_loss: 8.255, perplexity: 3846.406 I0424 09:29:25.163735 138400798861120 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0424 09:29:25.164405 138400798861120 checkpointing.py:798] Waited 0.0006895065307617188 seconds for step 9 to finish before starting checkpointing. I0424 09:29:25.166470 138400798861120 checkpoint_manager.py:2020] [process=4][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0424 09:29:38.649037 138272858777344 base_pytree_checkpoint_handler.py:130] [process=4] /jax/orbax/write/gbytes_per_sec: 42.303 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 37.34040856361389 s) (per-host) I0424 09:29:38.649154 138272858777344 async_checkpointer.py:90] [process=4][thread=async_save] 3 Handler Commit operations completed. Time taken: 37.057901s. I0424 09:29:46.978422 138272858777344 async_checkpointer.py:160] [process=4][thread=async_save] Background save thread done. Time taken: 45.387151s. I0424 09:29:46.978714 138270767838976 async_checkpointer.py:288] [process=4][thread=save_finalize] Done with waiting for background save thread=async_save. I0424 09:29:46.978841 138270767838976 async_checkpointer.py:298] [process=4][thread=save_finalize] No errors found in background save thread=async_save. I0424 09:29:46.978924 138270767838976 checkpoint_manager.py:2137] [process=4][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0424 09:29:46.980664 138270767838976 checkpoint_manager.py:2146] [process=4][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0424 09:29:46.980840 138400798861120 checkpoint_manager.py:2032] [process=4][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0. W0424 09:29:46.980985 138400798861120 checkpoint_manager.py:1452] Waiting for previous save to complete took 21.814515 seconds. If this number is high, consider checkpointing less frequently. I0424 09:29:46.982861 138400798861120 checkpoint_manager.py:1512] [process=4] Saving checkpoint at step 9 I0424 09:29:46.984767 138400798861120 event_tracking.py:70] [process=4] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312/linen_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_07_eval/checkpoints/9. I0424 09:29:47.294425 138400798861120 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0424 09:29:47.294517 138400798861120 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 I0424 09:29:47.331036 138400798861120 base_pytree_checkpoint_handler.py:154] [process=4][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.037706s I0424 09:29:47.331215 138400798861120 base_pytree_checkpoint_handler.py:130] [process=4] /jax/orbax/write/blocking_gbytes_per_sec: 37.529 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04110312461853027 s) (per-host) I0424 09:29:47.331270 138400798861120 base_pytree_checkpoint_handler.py:768] [process=4][thread=MainThread] Initiated Pytree async_save. Time taken: 0.041167s (batch_requests_ready=0.001758s, total_serialization_initiated=0.039334s, others=0.000074s) I0424 09:29:47.331370 138400798861120 composite_checkpoint_handler.py:715] [process=4][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.045183s (all_items=0.000015s, per_item={'items': '0.00001526'}, temp_paths=0.045168) I0424 09:29:47.332119 138400798861120 event_tracking.py:125] [process=4] [async] Finished blocking save in 0.35 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312/linen_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_07_eval/checkpoints/9. I0424 09:29:47.332478 138270767838976 async_checkpointer.py:76] [process=4][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 09:49:47.332443 I0424 09:29:47.334434 138400798861120 checkpoint_manager.py:1560] [process=4][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0424 09:29:47.334674 138250349958912 async_checkpointer.py:280] [process=4][thread=save_finalize] Waiting for background save thread=async_save. I0424 09:29:47.334831 138400798861120 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312/linen_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777022965.1664395, 'wait_for_prev_duration_secs': 21.814514636993408, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777022986.982914, 'checkpointer_blocking_duration_secs': 0.34970855712890625, 'get_old_steps_start_time': 1777022987.3326468, 'get_old_steps_duration_secs': 3.0517578125e-05, 'checkpoint_manager_blocking_start_time': 1777022965.164631, 'checkpoint_manager_blocking_duration_secs': 22.170166969299316} I0424 09:29:47.334947 138400798861120 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0424 09:29:47.334991 138400798861120 checkpoint_manager.py:2020] [process=4][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0424 09:29:52.746397 138271249745664 array_metadata_store.py:203] [process=4][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312/linen_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_07_eval/checkpoints/9/items/array_metadatas/process_4 I0424 09:30:28.903041 138270767838976 base_pytree_checkpoint_handler.py:130] [process=4] /jax/orbax/write/gbytes_per_sec: 37.959 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.612890005111694 s) (per-host) I0424 09:30:28.903170 138270767838976 async_checkpointer.py:90] [process=4][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.570579s. I0424 09:30:36.998041 138270767838976 async_checkpointer.py:160] [process=4][thread=async_save] Background save thread done. Time taken: 49.665434s. I0424 09:30:36.998325 138250349958912 async_checkpointer.py:288] [process=4][thread=save_finalize] Done with waiting for background save thread=async_save. I0424 09:30:36.998443 138250349958912 async_checkpointer.py:298] [process=4][thread=save_finalize] No errors found in background save thread=async_save. I0424 09:30:36.998492 138250349958912 checkpoint_manager.py:2137] [process=4][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0424 09:30:37.000899 138250349958912 checkpoint_manager.py:2146] [process=4][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0424 09:30:37.001069 138400798861120 checkpoint_manager.py:2032] [process=4][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9. I0424 09:30:37.001232 138400798861120 checkpoint_manager.py:2009] [process=4][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 09:30:37.002179 138400798861120 metric_logger.py:196] completed step: 9, seconds: 0.147, TFLOP/s/device: 92.450, Tokens/s/device: 13935.006, 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: Fri Apr 24 09:30:48 UTC 2026 EXIT_CODE=0