XPK Start: Fri Apr 24 09:18:23 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 09:18:47.936949: 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 09:18:48.145435 135402675500864 max_utils.py:273] Attempting to initialize the jax distributed system... I0424 09:18:57.185449 135402675500864 distributed.py:149] Starting JAX distributed service on [::]:8482 I0424 09:18:57.187743 135402675500864 distributed.py:172] Connecting to JAX distributed service on mt-03-dropout-7ksot-slice-job-0-0.mt-03-dropout-7ksot:8482 I0424 09:18:59.250531 135402675500864 max_utils.py:284] Jax distributed system initialized! I0424 09:19:05.636568 135402675500864 max_utils.py:800] System Information: Jax Version: 0.9.2 I0424 09:19:05.636690 135402675500864 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0424 09:19:05.636733 135402675500864 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 09:19:05.636770 135402675500864 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0424 09:19:06.330512 135402675500864 maxtext_utils.py:1732] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0424 09:19:06.331107 135402675500864 maxtext_utils.py:1732] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0424 09:19:06.331283 135402675500864 checkpointing.py:688] Setting up checkpoint logger... I0424 09:19:06.331332 135402675500864 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0424 09:19:06.331374 135402675500864 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0424 09:19:06.331712 135402675500864 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 0x7b252c94cef0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0424 09:19:09.233030 135402675500864 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0424 09:19:09.233229 135402675500864 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 0x7b10e429aed0>}, handler_registry=None I0424 09:19:09.233465 135402675500864 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7b10e429aed0>` 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 09:19:09.233513 135402675500864 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7b10e42993d0>` 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 09:19:09.233548 135402675500864 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 0x7b10e429aed0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7b10e429aed0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7b10e42993d0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7b10e42993d0>}). I0424 09:19:09.233893 135402675500864 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0424 09:19:09.233963 135402675500864 async_checkpointer.py:192] [process=5][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7b10cc5c5d00> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0424 09:19:10.142316 135402675500864 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_03_dropout/checkpoints I0424 09:19:10.458899 135402675500864 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_20260424_091312/linen_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_03_dropout/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7b10e41fa6f0> I0424 09:19:10.459073 135402675500864 checkpointing.py:302] Checkpoint manager created! I0424 09:19:10.814130 135402675500864 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0424 09:19:10.814239 135402675500864 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None). I0424 09:19:11.198626 135402675500864 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0424 09:19:11.198744 135402675500864 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None). I0424 09:19:11.215170 135402675500864 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,128,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0424 09:19:11.215231 135402675500864 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,128,2048]....................................... ('fsdp', None, None). I0424 09:19:11.238710 135402675500864 attentions.py:1154] attentions/query Logical: bfloat16[32,128,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 09:19:11.238778 135402675500864 attentions.py:1154] attentions/query Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None). I0424 09:19:11.255444 135402675500864 attentions.py:1155] attentions/key Logical: bfloat16[32,128,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 09:19:11.255508 135402675500864 attentions.py:1155] attentions/key Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None). I0424 09:19:11.271897 135402675500864 attentions.py:1156] attentions/value Logical: bfloat16[32,128,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 09:19:11.271953 135402675500864 attentions.py:1156] attentions/value Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None). I0424 09:19:11.296808 135402675500864 attentions.py:1198] attentions/out Logical: bfloat16[32,128,16,128]..................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0424 09:19:11.296877 135402675500864 attentions.py:1198] attentions/out Physical: bfloat16[32,128,16,128]..................................... ('fsdp', None, None, None). I0424 09:19:11.323356 135402675500864 linears.py:525] linears/x Logical: bfloat16[32,128,7168]....................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0424 09:19:11.323425 135402675500864 linears.py:525] linears/x Physical: bfloat16[32,128,7168]....................................... ('fsdp', None, None). I0424 09:19:11.551848 135402675500864 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0424 09:19:11.551954 135402675500864 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0424 09:19:12.993316 135402675500864 maxtext_utils.py:1835] params/params/decoder/decoder_norm/scale Shape: float32[2048] Logical: P('norm',) Physical: (None,) I0424 09:19:12.993443 135402675500864 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 09:19:12.993495 135402675500864 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 09:19:12.993550 135402675500864 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 09:19:12.993602 135402675500864 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 09:19:12.993640 135402675500864 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 09:19:12.993705 135402675500864 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 09:19:12.993757 135402675500864 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 09:19:12.993796 135402675500864 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 09:19:12.993831 135402675500864 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 09:19:12.993876 135402675500864 maxtext_utils.py:1835] params/params/decoder/logits_dense/kernel Shape: float32[2048,32000] Logical: P('embed_vocab', 'vocab') Physical: ('fsdp', None) I0424 09:19:12.993925 135402675500864 maxtext_utils.py:1835] params/params/token_embedder/embedding Shape: float32[32000,2048] Logical: P('vocab', 'embed_vocab') Physical: (None, 'fsdp') I0424 09:19:13.515454 135402675500864 train.py:157] train/xent Logical: float32[32,128]............................................. ('activation_embed_and_logits_batch', 'activation_length'). I0424 09:19:13.515551 135402675500864 train.py:157] train/xent Physical: float32[32,128]............................................. ('fsdp', None). I0424 09:19:13.531164 135402675500864 train.py:164] train/z_loss Logical: float32[32,128]............................................. ('activation_embed_and_logits_batch', 'activation_length'). I0424 09:19:13.531227 135402675500864 train.py:164] train/z_loss Physical: float32[32,128]............................................. ('fsdp', None). I0424 09:19:17.043644 135402675500864 max_utils.py:791] Total memory size: 0.8 GB, Output size: 0.4 GB, Temp size: 0.4 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB. I0424 09:19:17.044384 135402675500864 metric_logger.py:301] number parameters: 1.104 billion I0424 09:19:21.597485 135402675500864 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0424 09:19:21.769894 135402675500864 checkpointing.py:798] Waited 0.17238688468933105 seconds for step 0 to finish before starting checkpointing. I0424 09:19:21.772238 135402675500864 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 09:19:21.774343 135402675500864 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 0 I0424 09:19:21.775808 135402675500864 event_tracking.py:70] [process=5] [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_03_dropout/checkpoints/0. I0424 09:19:22.056517 135402675500864 signaling_client.py:364] Using JaxDistributedSignalingClient I0424 09:19:22.057620 135402675500864 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0424 09:19:22.057696 135402675500864 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 09:19:22.346196 135402675500864 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.289748s I0424 09:19:22.346377 135402675500864 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 5.227 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.29512548446655273 s) (per-host) I0424 09:19:22.346434 135402675500864 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.295192s (batch_requests_ready=0.002161s, total_serialization_initiated=0.292956s, others=0.000074s) I0424 09:19:22.346522 135402675500864 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.299314s (all_items=0.000017s, per_item={'items': '0.00001740'}, temp_paths=0.299297) I0424 09:19:22.347358 135402675500864 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.57 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_03_dropout/checkpoints/0. I0424 09:19:22.347710 135274918303488 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 09:39:22.347671 I0424 09:19:22.349793 135402675500864 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0424 09:19:22.350051 135273849542400 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0424 09:19:22.350204 135402675500864 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_03_dropout/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777022361.7722142, 'wait_for_prev_duration_secs': 6.4849853515625e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777022361.7743802, 'checkpointer_blocking_duration_secs': 0.5734286308288574, 'get_old_steps_start_time': 1777022362.3478336, 'get_old_steps_duration_secs': 2.956390380859375e-05, 'checkpoint_manager_blocking_start_time': 1777022361.7704248, 'checkpoint_manager_blocking_duration_secs': 0.5797381401062012} I0424 09:19:22.350312 135402675500864 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0424 09:19:22.350362 135402675500864 max_utils.py:750] Memstats: After params initialized: I0424 09:19:22.350410 135402675500864 max_utils.py:756] Using (GB) 0.41 / 31.25 (1.312000%) on TPU_18(process=5,(2,4,0,0)) I0424 09:19:22.350444 135402675500864 max_utils.py:756] Using (GB) 0.41 / 31.25 (1.312000%) on TPU_19(process=5,(3,4,0,0)) I0424 09:19:22.350472 135402675500864 max_utils.py:756] Using (GB) 0.41 / 31.25 (1.312000%) on TPU_22(process=5,(2,5,0,0)) I0424 09:19:22.350498 135402675500864 max_utils.py:756] Using (GB) 0.41 / 31.25 (1.312000%) on TPU_23(process=5,(3,5,0,0)) I0424 09:19:22.664377 135402675500864 metric_logger.py:196] completed step: 0, seconds: 4.553, TFLOP/s/device: 0.176, Tokens/s/device: 28.113, total_weights: 4096, loss: 10.889, lm_loss: 10.889, perplexity: 53560.699 I0424 09:19:22.784754 135402675500864 metric_logger.py:196] completed step: 1, seconds: 1.066, TFLOP/s/device: 0.752, Tokens/s/device: 120.130, total_weights: 4096, loss: 10.902, lm_loss: 10.902, perplexity: 54298.523 I0424 09:19:23.198682 135402675500864 metric_logger.py:196] completed step: 2, seconds: 0.050, TFLOP/s/device: 16.063, Tokens/s/device: 2567.188, total_weights: 4096, loss: 9.956, lm_loss: 9.956, perplexity: 21082.051 I0424 09:19:23.269491 135402675500864 metric_logger.py:196] completed step: 3, seconds: 0.414, TFLOP/s/device: 1.932, Tokens/s/device: 308.850, total_weights: 4096, loss: 9.139, lm_loss: 9.139, perplexity: 9314.691 I0424 09:19:23.411043 135402675500864 metric_logger.py:196] completed step: 4, seconds: 0.076, TFLOP/s/device: 10.544, Tokens/s/device: 1685.186, total_weights: 4096, loss: 8.459, lm_loss: 8.459, perplexity: 4715.493 I0424 09:19:23.416953 135402675500864 metric_logger.py:196] completed step: 5, seconds: 0.071, TFLOP/s/device: 11.330, Tokens/s/device: 1810.851, total_weights: 4096, loss: 7.924, lm_loss: 7.924, perplexity: 2762.373 I0424 09:19:25.217205 2759 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0424 09:19:27.261926 135273857935104 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_20260424_091312/linen_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_03_dropout/checkpoints/0/items/array_metadatas/process_5 I0424 09:19:32.490154 135402675500864 metric_logger.py:196] completed step: 6, seconds: 0.142, TFLOP/s/device: 5.637, Tokens/s/device: 900.863, total_weights: 4096, loss: 7.553, lm_loss: 7.553, perplexity: 1906.617 I0424 09:19:32.561068 135402675500864 metric_logger.py:196] completed step: 7, seconds: 9.004, TFLOP/s/device: 0.089, Tokens/s/device: 14.217, total_weights: 4096, loss: 7.267, lm_loss: 7.267, perplexity: 1431.653 I0424 09:19:32.631916 135402675500864 metric_logger.py:196] completed step: 8, seconds: 0.075, TFLOP/s/device: 10.656, Tokens/s/device: 1703.169, total_weights: 4096, loss: 7.111, lm_loss: 7.111, perplexity: 1225.983 I0424 09:19:32.701748 135402675500864 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0424 09:19:32.702377 135402675500864 checkpointing.py:798] Waited 0.0006449222564697266 seconds for step 9 to finish before starting checkpointing. I0424 09:19:32.704465 135402675500864 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0424 09:19:54.259014 135274918303488 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 49.044 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 32.207722425460815 s) (per-host) I0424 09:19:54.259143 135274918303488 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 31.910812s. I0424 09:20:03.350743 135274918303488 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 41.002396s. I0424 09:20:03.351025 135273849542400 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0424 09:20:03.351167 135273849542400 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0424 09:20:03.351226 135273849542400 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0424 09:20:03.352644 135273849542400 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0424 09:20:03.352818 135402675500864 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. W0424 09:20:03.352952 135402675500864 checkpoint_manager.py:1452] Waiting for previous save to complete took 30.648484 seconds. If this number is high, consider checkpointing less frequently. I0424 09:20:03.355116 135402675500864 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 9 I0424 09:20:03.357123 135402675500864 event_tracking.py:70] [process=5] [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_03_dropout/checkpoints/9. I0424 09:20:03.643676 135402675500864 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0424 09:20:03.643766 135402675500864 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 09:20:03.678594 135402675500864 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.036032s I0424 09:20:03.678774 135402675500864 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 39.074 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.03947877883911133 s) (per-host) I0424 09:20:03.678824 135402675500864 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.039538s (batch_requests_ready=0.001772s, total_serialization_initiated=0.037699s, others=0.000067s) I0424 09:20:03.678912 135402675500864 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.043908s (all_items=0.000015s, per_item={'items': '0.00001502'}, temp_paths=0.043893) I0424 09:20:03.679586 135402675500864 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.32 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_03_dropout/checkpoints/9. I0424 09:20:03.679890 135273849542400 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 09:40:03.679858 I0424 09:20:03.681864 135402675500864 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0424 09:20:03.682160 135273857935104 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0424 09:20:03.682328 135402675500864 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_03_dropout/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777022372.704437, 'wait_for_prev_duration_secs': 30.648483753204346, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777022403.355155, 'checkpointer_blocking_duration_secs': 0.32487940788269043, 'get_old_steps_start_time': 1777022403.6800563, 'get_old_steps_duration_secs': 3.1948089599609375e-05, 'checkpoint_manager_blocking_start_time': 1777022372.7026021, 'checkpoint_manager_blocking_duration_secs': 30.979690551757812} I0424 09:20:03.682443 135402675500864 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0424 09:20:03.682487 135402675500864 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0424 09:20:08.834295 135269533959936 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_20260424_091312/linen_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_03_dropout/checkpoints/9/items/array_metadatas/process_5 I0424 09:20:44.410958 135273849542400 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 38.743 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 40.77160453796387 s) (per-host) I0424 09:20:44.411093 135273849542400 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 40.731092s. I0424 09:20:52.055267 135273849542400 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 48.375250s. I0424 09:20:52.055563 135273857935104 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0424 09:20:52.055720 135273857935104 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0424 09:20:52.055771 135273857935104 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0424 09:20:52.057077 135273857935104 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0424 09:20:52.057240 135402675500864 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. I0424 09:20:52.057393 135402675500864 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 09:20:52.058415 135402675500864 metric_logger.py:196] completed step: 9, seconds: 0.071, TFLOP/s/device: 11.326, Tokens/s/device: 1810.134, total_weights: 4096, loss: 6.981, lm_loss: 6.981, perplexity: 1075.867 Per train step: Total TFLOPs: 0.80 split as 99.60% learnable weight flops and 0.40% attention flops XPK End: Fri Apr 24 09:21:03 UTC 2026 EXIT_CODE=0