XPK Start: Fri Apr 24 12:39:13 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 12:39:38.615868: 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 12:39:38.826395 136878333507392 max_utils.py:273] Attempting to initialize the jax distributed system... I0424 12:39:47.868032 136878333507392 distributed.py:149] Starting JAX distributed service on [::]:8482 I0424 12:39:47.870410 136878333507392 distributed.py:172] Connecting to JAX distributed service on mt-11-optimizer-offload-6qpkr-slice-job-0-0.mt-11-optimizer-offload-6qpkr:8482 I0424 12:39:48.840383 136878333507392 max_utils.py:284] Jax distributed system initialized! I0424 12:39:54.970285 136878333507392 max_utils.py:800] System Information: Jax Version: 0.9.2 I0424 12:39:54.970397 136878333507392 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0424 12:39:54.970438 136878333507392 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 12:39:54.970473 136878333507392 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0424 12:39:55.673484 136878333507392 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0424 12:39:55.674068 136878333507392 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0424 12:39:55.674268 136878333507392 checkpointing.py:688] Setting up checkpoint logger... I0424 12:39:55.674319 136878333507392 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0424 12:39:55.674361 136878333507392 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0424 12:39:55.674694 136878333507392 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 0x7c7cc0a503e0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0424 12:39:58.490964 136878333507392 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0424 12:39:58.491219 136878333507392 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 0x7c689c33f6b0>}, handler_registry=None I0424 12:39:58.491460 136878333507392 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7c689c33f6b0>` 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 12:39:58.491509 136878333507392 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7c689c341f10>` 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 12:39:58.491544 136878333507392 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 0x7c689c33f6b0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7c689c33f6b0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7c689c341f10>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7c689c341f10>}). I0424 12:39:58.491874 136878333507392 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0424 12:39:58.491943 136878333507392 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7c68847c5d00> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0424 12:39:59.355143 136878333507392 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_11_optimizer_offload_true/checkpoints I0424 12:39:59.395559 136878333507392 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_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_11_optimizer_offload_true/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7c689c33e990> I0424 12:39:59.395700 136878333507392 checkpointing.py:302] Checkpoint manager created! I0424 12:40:00.335583 136878333507392 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0424 12:40:00.335690 136878333507392 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 12:40:00.715566 136878333507392 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch_attn', 'activation_length_attn', 'activation_embed_attn'). I0424 12:40:00.715657 136878333507392 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 12:40:00.732216 136878333507392 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch_attn', 'activation_length_attn', 'activation_embed_attn'). I0424 12:40:00.732280 136878333507392 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 12:40:00.756291 136878333507392 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 12:40:00.756362 136878333507392 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 12:40:00.773178 136878333507392 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 12:40:00.773243 136878333507392 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 12:40:00.789762 136878333507392 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 12:40:00.789822 136878333507392 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 12:40:00.814647 136878333507392 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch_attn', 'activation_length_attn', 'activation_heads', 'activation_kv'). I0424 12:40:00.814718 136878333507392 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 12:40:00.841934 136878333507392 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0424 12:40:00.842049 136878333507392 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0424 12:40:01.069773 136878333507392 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0424 12:40:01.069885 136878333507392 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0424 12:40:02.669616 136878333507392 maxtext_utils.py:1880] params/params/decoder/decoder_norm/scale Shape: float32[2048] Logical: P('norm',) Physical: (None,) I0424 12:40:02.669750 136878333507392 maxtext_utils.py:1880] params/params/decoder/layers/mlp/wi_0/kernel Shape: float32[2048,16,7168] Logical: P('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0424 12:40:02.669806 136878333507392 maxtext_utils.py:1880] params/params/decoder/layers/mlp/wi_1/kernel Shape: float32[2048,16,7168] Logical: P('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0424 12:40:02.669864 136878333507392 maxtext_utils.py:1880] params/params/decoder/layers/mlp/wo/kernel Shape: float32[7168,16,2048] Logical: P('mlp', 'layers', 'embed') Physical: (None, None, 'fsdp') I0424 12:40:02.669918 136878333507392 maxtext_utils.py:1880] params/params/decoder/layers/post_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: P('norm', 'layers') Physical: (None, None) I0424 12:40:02.669963 136878333507392 maxtext_utils.py:1880] params/params/decoder/layers/pre_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: P('norm', 'layers') Physical: (None, None) I0424 12:40:02.670017 136878333507392 maxtext_utils.py:1880] 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 12:40:02.670070 136878333507392 maxtext_utils.py:1880] 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 12:40:02.670124 136878333507392 maxtext_utils.py:1880] 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 12:40:02.670164 136878333507392 maxtext_utils.py:1880] 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 12:40:02.670214 136878333507392 maxtext_utils.py:1880] params/params/decoder/logits_dense/kernel Shape: float32[2048,32000] Logical: P('embed_vocab', 'vocab') Physical: ('fsdp', None) I0424 12:40:02.670266 136878333507392 maxtext_utils.py:1880] params/params/token_embedder/embedding Shape: float32[32000,2048] Logical: P('vocab', 'embed_vocab') Physical: (None, 'fsdp') I0424 12:40:03.166999 136878333507392 train.py:157] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0424 12:40:03.167091 136878333507392 train.py:157] train/xent Physical: float32[32,2048]............................................ ('fsdp', None). I0424 12:40:03.182603 136878333507392 train.py:164] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0424 12:40:03.182665 136878333507392 train.py:164] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None). I0424 12:40:14.115612 136878333507392 max_utils.py:791] Total memory size: 1.3 GB, Output size: 0.1 GB, Temp size: 1.1 GB, Argument size: 0.1 GB, Host temp size: 0.0 GB. I0424 12:40:14.116427 136878333507392 metric_logger.py:301] number parameters: 1.104 billion I0424 12:40:25.444036 136878333507392 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0424 12:40:25.863033 136878333507392 checkpointing.py:798] Waited 0.4189753532409668 seconds for step 0 to finish before starting checkpointing. I0424 12:40:25.865441 136878333507392 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 12:40:25.867114 136878333507392 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 0 I0424 12:40:25.868430 136878333507392 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_11_optimizer_offload_true/checkpoints/0. I0424 12:40:26.210594 136878333507392 signaling_client.py:364] Using JaxDistributedSignalingClient I0424 12:40:26.211540 136878333507392 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0424 12:40:26.211596 136878333507392 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 12:40:26.489023 136878333507392 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.278503s I0424 12:40:26.489216 136878333507392 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.420 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.28461623191833496 s) (per-host) I0424 12:40:26.489270 136878333507392 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.284682s (batch_requests_ready=0.002162s, total_serialization_initiated=0.282447s, others=0.000073s) I0424 12:40:26.489365 136878333507392 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.289184s (all_items=0.000018s, per_item={'items': '0.00001764'}, temp_paths=0.289166) I0424 12:40:26.490190 136878333507392 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.62 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_11_optimizer_offload_true/checkpoints/0. I0424 12:40:26.490552 136731549767424 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 13:00:26.490514 I0424 12:40:26.503029 136878333507392 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0424 12:40:26.503354 136727024883456 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0424 12:40:26.503511 136878333507392 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_11_optimizer_offload_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777034425.865423, 'wait_for_prev_duration_secs': 5.936622619628906e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777034425.8671508, 'checkpointer_blocking_duration_secs': 0.6235668659210205, 'get_old_steps_start_time': 1777034426.4907424, 'get_old_steps_duration_secs': 2.9802322387695312e-05, 'checkpoint_manager_blocking_start_time': 1777034425.8635328, 'checkpoint_manager_blocking_duration_secs': 0.6399397850036621} I0424 12:40:26.503613 136878333507392 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0424 12:40:26.503662 136878333507392 max_utils.py:750] Memstats: After params initialized: I0424 12:40:26.503712 136878333507392 max_utils.py:756] Using (GB) 0.17 / 31.25 (0.544000%) on TPU_24(process=6,(0,6,0,0)) I0424 12:40:26.503745 136878333507392 max_utils.py:756] Using (GB) 0.17 / 31.25 (0.544000%) on TPU_25(process=6,(1,6,0,0)) I0424 12:40:26.503773 136878333507392 max_utils.py:756] Using (GB) 0.17 / 31.25 (0.544000%) on TPU_28(process=6,(0,7,0,0)) I0424 12:40:26.503798 136878333507392 max_utils.py:756] Using (GB) 0.17 / 31.25 (0.544000%) on TPU_29(process=6,(1,7,0,0)) I0424 12:40:26.817188 136878333507392 metric_logger.py:196] completed step: 0, seconds: 11.328, TFLOP/s/device: 1.199, Tokens/s/device: 180.799, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875 I0424 12:40:27.017729 136878333507392 metric_logger.py:196] completed step: 1, seconds: 1.372, TFLOP/s/device: 9.905, Tokens/s/device: 1493.040, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875 I0424 12:40:27.459156 136878333507392 metric_logger.py:196] completed step: 2, seconds: 0.038, TFLOP/s/device: 360.688, Tokens/s/device: 54366.870, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28637.129 I0424 12:40:27.621855 136878333507392 metric_logger.py:196] completed step: 3, seconds: 0.441, TFLOP/s/device: 30.787, Tokens/s/device: 4640.487, total_weights: 65536, loss: 9.734, lm_loss: 9.734, perplexity: 16889.047 I0424 12:40:27.947972 136878333507392 metric_logger.py:196] completed step: 4, seconds: 0.169, TFLOP/s/device: 80.396, Tokens/s/device: 12118.200, total_weights: 65536, loss: 9.278, lm_loss: 9.278, perplexity: 10694.968 I0424 12:40:27.953950 136878333507392 metric_logger.py:196] completed step: 5, seconds: 0.163, TFLOP/s/device: 83.576, Tokens/s/device: 12597.418, total_weights: 65536, loss: 8.892, lm_loss: 8.892, perplexity: 7270.520 I0424 12:40:29.657664 2840 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0424 12:40:31.724288 136731507455744 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_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_11_optimizer_offload_true/checkpoints/0/items/array_metadatas/process_6 I0424 12:40:49.687777 136878333507392 metric_logger.py:196] completed step: 6, seconds: 0.327, TFLOP/s/device: 41.592, Tokens/s/device: 6269.228, total_weights: 65536, loss: 8.592, lm_loss: 8.592, perplexity: 5390.688 I0424 12:40:49.850501 136878333507392 metric_logger.py:196] completed step: 7, seconds: 21.571, TFLOP/s/device: 0.630, Tokens/s/device: 94.941, total_weights: 65536, loss: 8.384, lm_loss: 8.384, perplexity: 4377.010 I0424 12:40:50.013180 136878333507392 metric_logger.py:196] completed step: 8, seconds: 0.168, TFLOP/s/device: 80.927, Tokens/s/device: 12198.245, total_weights: 65536, loss: 8.255, lm_loss: 8.255, perplexity: 3845.943 I0424 12:40:50.175378 136878333507392 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0424 12:40:50.176022 136878333507392 checkpointing.py:798] Waited 0.0006656646728515625 seconds for step 9 to finish before starting checkpointing. I0424 12:40:50.178027 136878333507392 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0424 12:41:03.349804 136731549767424 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 42.523 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 37.14517259597778 s) (per-host) I0424 12:41:03.349914 136731549767424 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 36.859242s. I0424 12:41:13.312544 136731549767424 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 46.821854s. I0424 12:41:13.312863 136727024883456 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0424 12:41:13.312991 136727024883456 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0424 12:41:13.313043 136727024883456 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0424 12:41:13.314686 136727024883456 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0424 12:41:13.314840 136878333507392 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 12:41:13.314975 136878333507392 checkpoint_manager.py:1452] Waiting for previous save to complete took 23.136947 seconds. If this number is high, consider checkpointing less frequently. I0424 12:41:13.317073 136878333507392 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 9 I0424 12:41:13.319058 136878333507392 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_11_optimizer_offload_true/checkpoints/9. I0424 12:41:13.611880 136878333507392 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0424 12:41:13.611976 136878333507392 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 12:41:13.654818 136878333507392 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.043912s I0424 12:41:13.654983 136878333507392 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 32.616 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.047292470932006836 s) (per-host) I0424 12:41:13.655034 136878333507392 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.047353s (batch_requests_ready=0.001839s, total_serialization_initiated=0.045445s, others=0.000069s) I0424 12:41:13.655134 136878333507392 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.051392s (all_items=0.000015s, per_item={'items': '0.00001526'}, temp_paths=0.051377) I0424 12:41:13.655821 136878333507392 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.34 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_11_optimizer_offload_true/checkpoints/9. I0424 12:41:13.656137 136727024883456 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 13:01:13.656091 I0424 12:41:13.658135 136878333507392 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0424 12:41:13.658427 136731507455744 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0424 12:41:13.658596 136878333507392 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_11_optimizer_offload_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777034450.177998, 'wait_for_prev_duration_secs': 23.13694739341736, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777034473.3171222, 'checkpointer_blocking_duration_secs': 0.3391542434692383, 'get_old_steps_start_time': 1777034473.6562986, 'get_old_steps_duration_secs': 3.0279159545898438e-05, 'checkpoint_manager_blocking_start_time': 1777034450.176259, 'checkpoint_manager_blocking_duration_secs': 23.48229742050171} I0424 12:41:13.658699 136878333507392 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0424 12:41:13.658741 136878333507392 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0424 12:41:19.401590 136723078039296 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_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_11_optimizer_offload_true/checkpoints/9/items/array_metadatas/process_6 I0424 12:41:56.881178 136727024883456 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 36.501 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 43.27344799041748 s) (per-host) I0424 12:41:56.881305 136727024883456 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 43.225055s. I0424 12:42:05.330310 136727024883456 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 51.674043s. I0424 12:42:05.330633 136731507455744 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0424 12:42:05.330765 136731507455744 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0424 12:42:05.330815 136731507455744 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0424 12:42:05.332330 136731507455744 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0424 12:42:05.332516 136878333507392 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 12:42:05.332677 136878333507392 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 12:42:05.333645 136878333507392 metric_logger.py:196] completed step: 9, seconds: 0.163, TFLOP/s/device: 83.473, Tokens/s/device: 12582.017, total_weights: 65536, loss: 8.179, lm_loss: 8.179, perplexity: 3564.739 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops XPK End: Fri Apr 24 12:42:13 UTC 2026 EXIT_CODE=0