XPK Start: Fri Apr 24 09:44:48 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 09:45:13.642118: 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 09:45:13.853775 132602459432768 max_utils.py:273] Attempting to initialize the jax distributed system... I0424 09:45:22.895391 132602459432768 distributed.py:149] Starting JAX distributed service on [::]:8482 I0424 09:45:22.897773 132602459432768 distributed.py:172] Connecting to JAX distributed service on mt-10-shardy-false-cay37-slice-job-0-0.mt-10-shardy-false-cay37:8482 I0424 09:45:24.272989 132602459432768 max_utils.py:284] Jax distributed system initialized! I0424 09:45:30.483367 132602459432768 max_utils.py:800] System Information: Jax Version: 0.9.2 I0424 09:45:30.483472 132602459432768 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0424 09:45:30.483512 132602459432768 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 09:45:30.483549 132602459432768 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0424 09:45:31.183816 132602459432768 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0424 09:45:31.184415 132602459432768 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0424 09:45:31.184597 132602459432768 checkpointing.py:688] Setting up checkpoint logger... I0424 09:45:31.184651 132602459432768 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0424 09:45:31.184695 132602459432768 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0424 09:45:31.185039 132602459432768 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 0x789932a48200>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0424 09:45:34.048316 132602459432768 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0424 09:45:34.048512 132602459432768 checkpoint_manager.py:708] [process=6][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7885500f6540>}, handler_registry=None I0424 09:45:34.048752 132602459432768 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7885500f6540>` 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 09:45:34.048801 132602459432768 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7885201f8440>` 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 09:45:34.048838 132602459432768 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 0x7885500f6540>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7885500f6540>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7885201f8440>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7885201f8440>}). I0424 09:45:34.049175 132602459432768 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0424 09:45:34.049250 132602459432768 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7885006e5f80> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0424 09:45:34.943632 132602459432768 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_10_shardy_false/checkpoints I0424 09:45:34.946557 132602459432768 checkpoint_manager.py:929] [process=6][thread=MainThread] CheckpointManager created, primary_host=0, CheckpointManagerOptions=CheckpointManagerOptions(save_interval_steps=1, max_to_keep=None, keep_time_interval=None, keep_period=None, should_keep_fn=None, best_fn=None, best_mode='max', keep_checkpoints_without_metrics=True, step_prefix=None, step_format_fixed_length=None, step_name_format=None, create=True, cleanup_tmp_directories=False, save_on_steps=frozenset(), single_host_load_and_broadcast=False, todelete_subdir=None, todelete_full_path=None, enable_background_delete=False, read_only=False, enable_async_checkpointing=True, async_options=None, multiprocessing_options=MultiprocessingOptions(primary_host=0, active_processes=None, barrier_sync_key_prefix=None), should_save_fn=None, file_options=FileOptions(path_permission_mode=None), save_root_metadata=True, temporary_path_class=None, save_decision_policy=FixedIntervalPolicy(interval=10), preservation_policy=LatestN(n=None), prevent_write_metrics=False, enable_should_save_is_saving_in_progress_check=True, enable_per_process_directory_creation=False, lightweight_initialize=False), root_directory=gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312/linen_xpk_feat_nnx_trainstate_and_training_loop_20260424_091312_10_shardy_false/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7885201f5340> I0424 09:45:34.946667 132602459432768 checkpointing.py:302] Checkpoint manager created! I0424 09:45:35.889609 132602459432768 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0424 09:45:35.889714 132602459432768 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 09:45:36.271751 132602459432768 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch_attn', 'activation_length_attn', 'activation_embed_attn'). I0424 09:45:36.271848 132602459432768 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 09:45:36.288610 132602459432768 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch_attn', 'activation_length_attn', 'activation_embed_attn'). I0424 09:45:36.288672 132602459432768 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 09:45:36.312881 132602459432768 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 09:45:36.312947 132602459432768 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 09:45:36.329698 132602459432768 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 09:45:36.329761 132602459432768 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 09:45:36.346455 132602459432768 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 09:45:36.346517 132602459432768 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 09:45:36.371862 132602459432768 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch_attn', 'activation_length_attn', 'activation_heads', 'activation_kv'). I0424 09:45:36.371933 132602459432768 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 09:45:36.393284 132602459432768 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0424 09:45:36.393347 132602459432768 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0424 09:45:36.612333 132602459432768 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0424 09:45:36.612436 132602459432768 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0424 09:45:38.006586 132602459432768 maxtext_utils.py:1874] params/params/decoder/decoder_norm/scale Shape: float32[2048] Logical: P('norm',) Physical: (None,) I0424 09:45:38.006709 132602459432768 maxtext_utils.py:1874] params/params/decoder/layers/mlp/wi_0/kernel Shape: float32[2048,16,7168] Logical: P('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0424 09:45:38.006770 132602459432768 maxtext_utils.py:1874] params/params/decoder/layers/mlp/wi_1/kernel Shape: float32[2048,16,7168] Logical: P('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0424 09:45:38.006828 132602459432768 maxtext_utils.py:1874] params/params/decoder/layers/mlp/wo/kernel Shape: float32[7168,16,2048] Logical: P('mlp', 'layers', 'embed') Physical: (None, None, 'fsdp') I0424 09:45:38.006880 132602459432768 maxtext_utils.py:1874] params/params/decoder/layers/post_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: P('norm', 'layers') Physical: (None, None) I0424 09:45:38.006919 132602459432768 maxtext_utils.py:1874] params/params/decoder/layers/pre_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: P('norm', 'layers') Physical: (None, None) I0424 09:45:38.006971 132602459432768 maxtext_utils.py:1874] 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 09:45:38.007023 132602459432768 maxtext_utils.py:1874] 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 09:45:38.007061 132602459432768 maxtext_utils.py:1874] 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 09:45:38.007117 132602459432768 maxtext_utils.py:1874] 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 09:45:38.007171 132602459432768 maxtext_utils.py:1874] params/params/decoder/logits_dense/kernel Shape: float32[2048,32000] Logical: P('embed_vocab', 'vocab') Physical: ('fsdp', None) I0424 09:45:38.007222 132602459432768 maxtext_utils.py:1874] params/params/token_embedder/embedding Shape: float32[32000,2048] Logical: P('vocab', 'embed_vocab') Physical: (None, 'fsdp') I0424 09:45:38.500889 132602459432768 train.py:157] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0424 09:45:38.500979 132602459432768 train.py:157] train/xent Physical: float32[32,2048]............................................ ('fsdp', None). I0424 09:45:38.516610 132602459432768 train.py:164] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0424 09:45:38.516669 132602459432768 train.py:164] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None). I0424 09:45:49.595891 132602459432768 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 09:45:49.596724 132602459432768 metric_logger.py:301] number parameters: 1.104 billion I0424 09:46:00.914750 132602459432768 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0424 09:46:01.069354 132602459432768 checkpointing.py:798] Waited 0.15458965301513672 seconds for step 0 to finish before starting checkpointing. I0424 09:46:01.071911 132602459432768 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 09:46:01.073571 132602459432768 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 0 I0424 09:46:01.074994 132602459432768 event_tracking.py:70] [process=6] [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_10_shardy_false/checkpoints/0. I0424 09:46:01.362957 132602459432768 signaling_client.py:364] Using JaxDistributedSignalingClient I0424 09:46:01.363878 132602459432768 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0424 09:46:01.363933 132602459432768 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 09:46:01.650686 132602459432768 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.287803s I0424 09:46:01.650870 132602459432768 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.250 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.29383230209350586 s) (per-host) I0424 09:46:01.650939 132602459432768 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.293910s (batch_requests_ready=0.002507s, total_serialization_initiated=0.291315s, others=0.000088s) I0424 09:46:01.651059 132602459432768 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.297965s (all_items=0.000017s, per_item={'items': '0.00001669'}, temp_paths=0.297948) I0424 09:46:01.651876 132602459432768 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.58 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_10_shardy_false/checkpoints/0. I0424 09:46:01.652221 132473560229632 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 10:06:01.652184 I0424 09:46:01.654257 132602459432768 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0424 09:46:01.654518 132472444126976 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0424 09:46:01.654641 132602459432768 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_10_shardy_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777023961.071893, 'wait_for_prev_duration_secs': 6.127357482910156e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777023961.07361, 'checkpointer_blocking_duration_secs': 0.5787601470947266, 'get_old_steps_start_time': 1777023961.6523983, 'get_old_steps_duration_secs': 2.9325485229492188e-05, 'checkpoint_manager_blocking_start_time': 1777023961.0698433, 'checkpoint_manager_blocking_duration_secs': 0.5847616195678711} I0424 09:46:01.654756 132602459432768 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0424 09:46:01.654805 132602459432768 max_utils.py:750] Memstats: After params initialized: I0424 09:46:01.654852 132602459432768 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_24(process=6,(0,6,0,0)) I0424 09:46:01.654885 132602459432768 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_25(process=6,(1,6,0,0)) I0424 09:46:01.654913 132602459432768 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_28(process=6,(0,7,0,0)) I0424 09:46:01.654938 132602459432768 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_29(process=6,(1,7,0,0)) I0424 09:46:01.972857 132602459432768 metric_logger.py:196] completed step: 0, seconds: 11.318, TFLOP/s/device: 1.200, Tokens/s/device: 180.952, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875 I0424 09:46:02.150521 132602459432768 metric_logger.py:196] completed step: 1, seconds: 1.057, TFLOP/s/device: 12.860, Tokens/s/device: 1938.406, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875 I0424 09:46:02.570806 132602459432768 metric_logger.py:196] completed step: 2, seconds: 0.030, TFLOP/s/device: 446.065, Tokens/s/device: 67235.719, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28637.129 I0424 09:46:02.717997 132602459432768 metric_logger.py:196] completed step: 3, seconds: 0.421, TFLOP/s/device: 32.311, Tokens/s/device: 4870.334, total_weights: 65536, loss: 9.734, lm_loss: 9.734, perplexity: 16889.203 I0424 09:46:03.013017 132602459432768 metric_logger.py:196] completed step: 4, seconds: 0.154, TFLOP/s/device: 88.475, Tokens/s/device: 13335.938, total_weights: 65536, loss: 9.277, lm_loss: 9.277, perplexity: 10694.614 I0424 09:46:03.018930 132602459432768 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.726, Tokens/s/device: 13976.660, total_weights: 65536, loss: 8.892, lm_loss: 8.892, perplexity: 7270.717 I0424 09:46:04.885224 2824 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0424 09:46:07.355510 132472986674944 array_metadata_store.py:203] [process=6][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_10_shardy_false/checkpoints/0/items/array_metadatas/process_6 I0424 09:46:24.536136 132602459432768 metric_logger.py:196] completed step: 6, seconds: 0.296, TFLOP/s/device: 45.976, Tokens/s/device: 6929.969, total_weights: 65536, loss: 8.592, lm_loss: 8.592, perplexity: 5390.759 I0424 09:46:24.683565 132602459432768 metric_logger.py:196] completed step: 7, seconds: 21.371, TFLOP/s/device: 0.636, Tokens/s/device: 95.832, total_weights: 65536, loss: 8.384, lm_loss: 8.384, perplexity: 4376.905 I0424 09:46:24.830803 132602459432768 metric_logger.py:196] completed step: 8, seconds: 0.152, TFLOP/s/device: 89.254, Tokens/s/device: 13453.327, total_weights: 65536, loss: 8.255, lm_loss: 8.255, perplexity: 3846.406 I0424 09:46:24.977635 132602459432768 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0424 09:46:24.978304 132602459432768 checkpointing.py:798] Waited 0.0006906986236572266 seconds for step 9 to finish before starting checkpointing. I0424 09:46:24.980273 132602459432768 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0424 09:46:38.423053 132473560229632 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 42.616 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 37.065980434417725 s) (per-host) I0424 09:46:38.423187 132473560229632 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 36.770855s. I0424 09:46:45.132393 132473560229632 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 43.480043s. I0424 09:46:45.132679 132472444126976 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0424 09:46:45.132800 132472444126976 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0424 09:46:45.132847 132472444126976 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0424 09:46:45.134455 132472444126976 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0424 09:46:45.134627 132602459432768 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0. W0424 09:46:45.134768 132602459432768 checkpoint_manager.py:1452] Waiting for previous save to complete took 20.154495 seconds. If this number is high, consider checkpointing less frequently. I0424 09:46:45.136411 132602459432768 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 9 I0424 09:46:45.138369 132602459432768 event_tracking.py:70] [process=6] [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_10_shardy_false/checkpoints/9. I0424 09:46:45.859852 132602459432768 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0424 09:46:45.859948 132602459432768 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 09:46:45.895815 132602459432768 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.037059s I0424 09:46:45.895987 132602459432768 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 3.270 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.47167539596557617 s) (per-host) I0424 09:46:45.896050 132602459432768 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.471744s (batch_requests_ready=0.432853s, total_serialization_initiated=0.038812s, others=0.000079s) I0424 09:46:45.896182 132602459432768 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.475820s (all_items=0.000019s, per_item={'items': '0.00001907'}, temp_paths=0.475801) I0424 09:46:45.896914 132602459432768 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.76 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_10_shardy_false/checkpoints/9. I0424 09:46:45.897262 132472444126976 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 10:06:45.897223 I0424 09:46:45.899210 132602459432768 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0424 09:46:45.899442 132473543444224 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0424 09:46:45.899546 132602459432768 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_10_shardy_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777023984.9802432, 'wait_for_prev_duration_secs': 20.154494762420654, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777024005.1364489, 'checkpointer_blocking_duration_secs': 0.7609531879425049, 'get_old_steps_start_time': 1777024005.8974266, 'get_old_steps_duration_secs': 2.86102294921875e-05, 'checkpoint_manager_blocking_start_time': 1777023984.978528, 'checkpoint_manager_blocking_duration_secs': 20.920985460281372} I0424 09:46:45.899716 132602459432768 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0424 09:46:45.899761 132602459432768 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0424 09:46:50.573871 132473551836928 array_metadata_store.py:203] [process=6][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_10_shardy_false/checkpoints/9/items/array_metadatas/process_6 I0424 09:47:26.692280 132472444126976 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 38.277 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.26793098449707 s) (per-host) I0424 09:47:26.692396 132472444126976 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 40.795022s. I0424 09:47:35.527618 132472444126976 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 49.630228s. I0424 09:47:35.527846 132473543444224 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0424 09:47:35.527925 132473543444224 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0424 09:47:35.527981 132473543444224 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0424 09:47:35.529731 132473543444224 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0424 09:47:35.529909 132602459432768 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9. I0424 09:47:35.530060 132602459432768 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 09:47:35.530967 132602459432768 metric_logger.py:196] completed step: 9, seconds: 0.147, TFLOP/s/device: 92.265, Tokens/s/device: 13907.186, 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 09:47:43 UTC 2026 EXIT_CODE=0