XPK Start: Fri Apr 24 13:38:52 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 13:39:16.993614: 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 13:39:17.205387 136273407444800 max_utils.py:273] Attempting to initialize the jax distributed system... I0424 13:39:26.245851 136273407444800 distributed.py:149] Starting JAX distributed service on [::]:8482 I0424 13:39:26.248136 136273407444800 distributed.py:172] Connecting to JAX distributed service on mt-04-int8-l2017-slice-job-0-0.mt-04-int8-l2017:8482 I0424 13:39:27.249564 136273407444800 max_utils.py:284] Jax distributed system initialized! I0424 13:39:33.199748 136273407444800 max_utils.py:800] System Information: Jax Version: 0.9.2 I0424 13:39:33.199854 136273407444800 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0424 13:39:33.199893 136273407444800 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 13:39:33.199930 136273407444800 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0424 13:39:33.893359 136273407444800 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0424 13:39:34.456425 136273407444800 checkpointing.py:688] Setting up checkpoint logger... I0424 13:39:34.456554 136273407444800 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0424 13:39:34.456601 136273407444800 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0424 13:39:34.456837 136273407444800 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 0x7bf004b185c0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0424 13:39:37.331479 136273407444800 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0424 13:39:37.331740 136273407444800 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 0x7bdb0450be60>}, handler_registry=None I0424 13:39:37.331992 136273407444800 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7bdb0450be60>` 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 13:39:37.332041 136273407444800 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7bdb04653f20>` 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 13:39:37.332077 136273407444800 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 0x7bdb0450be60>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7bdb0450be60>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7bdb04653f20>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7bdb04653f20>}). I0424 13:39:37.332406 136273407444800 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0424 13:39:37.332478 136273407444800 async_checkpointer.py:192] [process=5][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7bdb0457c720> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0424 13:39:40.001865 136273407444800 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/nnx_xpk_feat_nnx_post_train_fixes_20260424_120657_04_int8/checkpoints I0424 13:39:40.016007 136273407444800 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/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/nnx_xpk_feat_nnx_post_train_fixes_20260424_120657_04_int8/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7bdb0467c680> I0424 13:39:40.016124 136273407444800 checkpointing.py:302] Checkpoint manager created! I0424 13:39:41.392685 136273407444800 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0424 13:39:41.392808 136273407444800 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0424 13:39:43.741718 136273407444800 maxtext_utils.py:1889] decoder/decoder_norm/scale/value Shape: float32[2048] Physical: (None,) I0424 13:39:43.741837 136273407444800 maxtext_utils.py:1889] decoder/layers/mlp/wi_0/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, None) I0424 13:39:43.741889 136273407444800 maxtext_utils.py:1889] decoder/layers/mlp/wi_1/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, None) I0424 13:39:43.741931 136273407444800 maxtext_utils.py:1889] decoder/layers/mlp/wo/kernel/value Shape: float32[7168,16,2048] Physical: (None, None, 'fsdp') I0424 13:39:43.741967 136273407444800 maxtext_utils.py:1889] decoder/layers/post_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: (None, None) I0424 13:39:43.742000 136273407444800 maxtext_utils.py:1889] decoder/layers/pre_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: (None, None) I0424 13:39:43.742036 136273407444800 maxtext_utils.py:1889] decoder/layers/self_attention/key/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0424 13:39:43.742071 136273407444800 maxtext_utils.py:1889] decoder/layers/self_attention/out/kernel/value Shape: float32[16,16,128,2048] Physical: (None, None, None, 'fsdp') I0424 13:39:43.742106 136273407444800 maxtext_utils.py:1889] decoder/layers/self_attention/query/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0424 13:39:43.742138 136273407444800 maxtext_utils.py:1889] decoder/layers/self_attention/value/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0424 13:39:43.742170 136273407444800 maxtext_utils.py:1889] decoder/logits_dense/kernel/value Shape: float32[2048,32000] Physical: ('fsdp', None) I0424 13:39:43.742207 136273407444800 maxtext_utils.py:1889] token_embedder/embedding/value Shape: float32[32000,2048] Physical: (None, 'fsdp') I0424 13:39:44.565798 136273407444800 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0424 13:39:44.565889 136273407444800 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 13:39:44.571147 136273407444800 nnx_decoders.py:465] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0424 13:39:44.571206 136273407444800 nnx_decoders.py:465] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 13:39:44.587807 136273407444800 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0424 13:39:44.587869 136273407444800 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 13:39:44.603702 136273407444800 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0424 13:39:44.603762 136273407444800 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 13:39:44.683105 136273407444800 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 13:39:44.683206 136273407444800 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 13:39:44.699249 136273407444800 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 13:39:44.699311 136273407444800 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 13:39:44.715330 136273407444800 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 13:39:44.715387 136273407444800 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 13:39:44.745383 136273407444800 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0424 13:39:44.745456 136273407444800 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 13:39:44.825950 136273407444800 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0424 13:39:44.826035 136273407444800 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0424 13:39:58.774149 136273407444800 max_utils.py:791] Total memory size: 1.8 GB, Output size: 0.4 GB, Temp size: 1.4 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB. I0424 13:39:58.777770 136273407444800 metric_logger.py:301] number parameters: 1.104 billion I0424 13:40:13.399672 136273407444800 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0424 13:40:13.642557 136273407444800 checkpointing.py:798] Waited 0.2428758144378662 seconds for step 0 to finish before starting checkpointing. I0424 13:40:13.645015 136273407444800 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 13:40:13.646812 136273407444800 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 0 I0424 13:40:13.648232 136273407444800 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/nnx_xpk_feat_nnx_post_train_fixes_20260424_120657_04_int8/checkpoints/0. I0424 13:40:14.084768 136273407444800 signaling_client.py:364] Using JaxDistributedSignalingClient I0424 13:40:14.085688 136273407444800 jax_array_handlers.py:360] Scheduling D2H of 111 prioritized jax.Array. I0424 13:40:14.085749 136273407444800 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 13:40:14.363680 136273407444800 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.280535s I0424 13:40:14.363863 136273407444800 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 5.221 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2954728603363037 s) (per-host) I0424 13:40:14.363915 136273407444800 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.295537s (batch_requests_ready=0.005264s, total_serialization_initiated=0.290200s, others=0.000073s) I0424 13:40:14.364035 136273407444800 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.300045s (all_items=0.000018s, per_item={'items': '0.00001764'}, temp_paths=0.300028) I0424 13:40:14.364847 136273407444800 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.72 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/nnx_xpk_feat_nnx_post_train_fixes_20260424_120657_04_int8/checkpoints/0. I0424 13:40:14.365180 136141598799616 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 14:00:14.365142 I0424 13:40:14.371858 136273407444800 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0424 13:40:14.372136 136139942819584 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0424 13:40:14.372267 136273407444800 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/nnx_xpk_feat_nnx_post_train_fixes_20260424_120657_04_int8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777038013.6449964, 'wait_for_prev_duration_secs': 6.103515625e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777038013.6468515, 'checkpointer_blocking_duration_secs': 0.7184975147247314, 'get_old_steps_start_time': 1777038014.3653738, 'get_old_steps_duration_secs': 2.9802322387695312e-05, 'checkpoint_manager_blocking_start_time': 1777038013.643019, 'checkpoint_manager_blocking_duration_secs': 0.7292075157165527} I0424 13:40:14.372387 136273407444800 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0424 13:40:14.372469 136273407444800 max_utils.py:750] Memstats: After params initialized: I0424 13:40:14.372520 136273407444800 max_utils.py:756] Using (GB) 0.44 / 31.25 (1.408000%) on TPU_18(process=5,(2,4,0,0)) I0424 13:40:14.372552 136273407444800 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_19(process=5,(3,4,0,0)) I0424 13:40:14.372578 136273407444800 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_22(process=5,(2,5,0,0)) I0424 13:40:14.372601 136273407444800 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_23(process=5,(3,5,0,0)) I0424 13:40:14.704244 136273407444800 metric_logger.py:196] completed step: 0, seconds: 14.620, TFLOP/s/device: 0.929, Tokens/s/device: 140.082, total_weights: 65536, loss: 10.872, lm_loss: 10.872, perplexity: 52668.902 I0424 13:40:14.937591 136273407444800 metric_logger.py:196] completed step: 1, seconds: 1.302, TFLOP/s/device: 10.434, Tokens/s/device: 1572.701, total_weights: 65536, loss: 10.872, lm_loss: 10.872, perplexity: 52668.902 I0424 13:40:15.385233 136273407444800 metric_logger.py:196] completed step: 2, seconds: 0.017, TFLOP/s/device: 820.429, Tokens/s/device: 123664.030, total_weights: 65536, loss: 10.260, lm_loss: 10.260, perplexity: 28557.658 I0424 13:40:15.615157 136273407444800 metric_logger.py:196] completed step: 3, seconds: 0.417, TFLOP/s/device: 32.587, Tokens/s/device: 4911.895, total_weights: 65536, loss: 9.728, lm_loss: 9.728, perplexity: 16789.145 I0424 13:40:16.075662 136273407444800 metric_logger.py:196] completed step: 4, seconds: 0.257, TFLOP/s/device: 52.844, Tokens/s/device: 7965.245, total_weights: 65536, loss: 9.271, lm_loss: 9.271, perplexity: 10625.563 I0424 13:40:16.084481 136273407444800 metric_logger.py:196] completed step: 5, seconds: 0.230, TFLOP/s/device: 59.103, Tokens/s/device: 8908.608, total_weights: 65536, loss: 8.885, lm_loss: 8.885, perplexity: 7225.917 I0424 13:40:17.461114 2948 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0424 13:40:19.487169 136139951212288 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 111 array_metadata.ArrayMetadata to gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/nnx_xpk_feat_nnx_post_train_fixes_20260424_120657_04_int8/checkpoints/0/items/array_metadatas/process_5 I0424 13:40:44.276552 136273407444800 metric_logger.py:196] completed step: 6, seconds: 0.461, TFLOP/s/device: 29.495, Tokens/s/device: 4445.843, total_weights: 65536, loss: 8.586, lm_loss: 8.586, perplexity: 5354.806 I0424 13:40:44.506316 136273407444800 metric_logger.py:196] completed step: 7, seconds: 27.965, TFLOP/s/device: 0.486, Tokens/s/device: 73.234, total_weights: 65536, loss: 8.378, lm_loss: 8.378, perplexity: 4350.756 I0424 13:40:44.735590 136273407444800 metric_logger.py:196] completed step: 8, seconds: 0.236, TFLOP/s/device: 57.645, Tokens/s/device: 8688.901, total_weights: 65536, loss: 8.249, lm_loss: 8.249, perplexity: 3824.619 I0424 13:40:44.966505 136273407444800 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0424 13:40:44.967461 136273407444800 checkpointing.py:798] Waited 0.0009682178497314453 seconds for step 9 to finish before starting checkpointing. I0424 13:40:44.969460 136273407444800 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0424 13:40:48.264736 136141598799616 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 46.192 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 34.19630694389343 s) (per-host) I0424 13:40:48.264850 136141598799616 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 33.899545s. I0424 13:40:54.618432 136141598799616 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 40.253111s. I0424 13:40:54.618740 136139942819584 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0424 13:40:54.618858 136139942819584 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0424 13:40:54.618907 136139942819584 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0424 13:40:54.620438 136139942819584 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0424 13:40:54.620601 136273407444800 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 13:40:54.620750 136273407444800 checkpoint_manager.py:1452] Waiting for previous save to complete took 9.651291 seconds. If this number is high, consider checkpointing less frequently. I0424 13:40:54.622701 136273407444800 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 9 I0424 13:40:54.624765 136273407444800 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/nnx_xpk_feat_nnx_post_train_fixes_20260424_120657_04_int8/checkpoints/9. I0424 13:40:54.926912 136273407444800 jax_array_handlers.py:360] Scheduling D2H of 111 prioritized jax.Array. I0424 13:40:54.927013 136273407444800 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 13:40:54.963769 136273407444800 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.039355s I0424 13:40:54.963923 136273407444800 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 29.808 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.05175042152404785 s) (per-host) I0424 13:40:54.963973 136273407444800 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.051811s (batch_requests_ready=0.004400s, total_serialization_initiated=0.047344s, others=0.000066s) I0424 13:40:54.964090 136273407444800 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.055885s (all_items=0.000016s, per_item={'items': '0.00001621'}, temp_paths=0.055869) I0424 13:40:54.964812 136273407444800 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.34 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/nnx_xpk_feat_nnx_post_train_fixes_20260424_120657_04_int8/checkpoints/9. I0424 13:40:54.965117 136139942819584 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 14:00:54.965085 I0424 13:40:54.967068 136273407444800 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0424 13:40:54.967345 136139951212288 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0424 13:40:54.967505 136273407444800 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/nnx_xpk_feat_nnx_post_train_fixes_20260424_120657_04_int8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777038044.9694283, 'wait_for_prev_duration_secs': 9.651291370391846, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777038054.62274, 'checkpointer_blocking_duration_secs': 0.34251904487609863, 'get_old_steps_start_time': 1777038054.9652827, 'get_old_steps_duration_secs': 2.7894973754882812e-05, 'checkpoint_manager_blocking_start_time': 1777038044.9677463, 'checkpoint_manager_blocking_duration_secs': 9.999724864959717} I0424 13:40:54.967627 136273407444800 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0424 13:40:54.967684 136273407444800 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0424 13:41:00.402740 136117630228224 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 111 array_metadata.ArrayMetadata to gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/nnx_xpk_feat_nnx_post_train_fixes_20260424_120657_04_int8/checkpoints/9/items/array_metadatas/process_5 I0424 13:41:37.370131 136139942819584 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 37.204 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.45792245864868 s) (per-host) I0424 13:41:37.370250 136139942819584 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.405020s. I0424 13:41:44.867597 136139942819584 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 49.902351s. I0424 13:41:44.867931 136139951212288 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0424 13:41:44.868046 136139951212288 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0424 13:41:44.868096 136139951212288 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0424 13:41:44.869434 136139951212288 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0424 13:41:44.869604 136273407444800 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 13:41:44.869816 136273407444800 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 13:41:44.870754 136273407444800 metric_logger.py:196] completed step: 9, seconds: 0.229, TFLOP/s/device: 59.220, Tokens/s/device: 8926.275, total_weights: 65536, loss: 8.174, lm_loss: 8.174, perplexity: 3546.104 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops XPK End: Fri Apr 24 13:41:57 UTC 2026 EXIT_CODE=0