XPK Start: Sat Apr 25 13:45:39 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. 2026-04-25 13:46:04.653036: 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) I0425 13:46:04.863783 140009287153472 max_utils.py:273] Attempting to initialize the jax distributed system... I0425 13:46:13.904445 140009287153472 distributed.py:149] Starting JAX distributed service on [::]:8482 I0425 13:46:13.906730 140009287153472 distributed.py:172] Connecting to JAX distributed service on mt-04-int8-7q1rt-slice-job-0-0.mt-04-int8-7q1rt:8482 I0425 13:46:14.683212 140009287153472 max_utils.py:284] Jax distributed system initialized! I0425 13:46:20.747398 140009287153472 max_utils.py:800] System Information: Jax Version: 0.9.2 I0425 13:46:20.747503 140009287153472 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0425 13:46:20.747543 140009287153472 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 I0425 13:46:20.747579 140009287153472 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0425 13:46:21.444424 140009287153472 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0425 13:46:21.996973 140009287153472 checkpointing.py:688] Setting up checkpoint logger... I0425 13:46:21.997096 140009287153472 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0425 13:46:21.997140 140009287153472 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0425 13:46:21.997347 140009287153472 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 0x7f55d5f1be30>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0425 13:46:24.840099 140009287153472 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0425 13:46:24.840338 140009287153472 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 0x7f41585ddb50>}, handler_registry=None I0425 13:46:24.840573 140009287153472 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7f41585ddb50>` 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`. I0425 13:46:24.840620 140009287153472 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7f4158442ed0>` 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`. I0425 13:46:24.840668 140009287153472 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 0x7f41585ddb50>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7f41585ddb50>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7f4158442ed0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7f4158442ed0>}). I0425 13:46:24.840984 140009287153472 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0425 13:46:24.841053 140009287153472 async_checkpointer.py:192] [process=5][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7f41584d4720> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0425 13:46:25.986232 140009287153472 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_04_int8/checkpoints I0425 13:46:25.988414 140009287153472 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_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_04_int8/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7f417838dbb0> I0425 13:46:25.988528 140009287153472 checkpointing.py:302] Checkpoint manager created! I0425 13:46:27.341072 140009287153472 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0425 13:46:27.341201 140009287153472 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0425 13:46:29.633752 140009287153472 maxtext_utils.py:1889] decoder/decoder_norm/scale/value Shape: float32[2048] Physical: (None,) I0425 13:46:29.633868 140009287153472 maxtext_utils.py:1889] decoder/layers/mlp/wi_0/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, None) I0425 13:46:29.633921 140009287153472 maxtext_utils.py:1889] decoder/layers/mlp/wi_1/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, None) I0425 13:46:29.633963 140009287153472 maxtext_utils.py:1889] decoder/layers/mlp/wo/kernel/value Shape: float32[7168,16,2048] Physical: (None, None, 'fsdp') I0425 13:46:29.633999 140009287153472 maxtext_utils.py:1889] decoder/layers/post_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: (None, None) I0425 13:46:29.634030 140009287153472 maxtext_utils.py:1889] decoder/layers/pre_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: (None, None) I0425 13:46:29.634064 140009287153472 maxtext_utils.py:1889] decoder/layers/self_attention/key/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0425 13:46:29.634099 140009287153472 maxtext_utils.py:1889] decoder/layers/self_attention/out/kernel/value Shape: float32[16,16,128,2048] Physical: (None, None, None, 'fsdp') I0425 13:46:29.634133 140009287153472 maxtext_utils.py:1889] decoder/layers/self_attention/query/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0425 13:46:29.634165 140009287153472 maxtext_utils.py:1889] decoder/layers/self_attention/value/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0425 13:46:29.634200 140009287153472 maxtext_utils.py:1889] decoder/logits_dense/kernel/value Shape: float32[2048,32000] Physical: ('fsdp', None) I0425 13:46:29.634232 140009287153472 maxtext_utils.py:1889] token_embedder/embedding/value Shape: float32[32000,2048] Physical: (None, 'fsdp') I0425 13:46:30.450364 140009287153472 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0425 13:46:30.450461 140009287153472 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 13:46:30.455699 140009287153472 nnx_decoders.py:465] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0425 13:46:30.455754 140009287153472 nnx_decoders.py:465] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 13:46:30.472271 140009287153472 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0425 13:46:30.472332 140009287153472 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 13:46:30.488286 140009287153472 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0425 13:46:30.488343 140009287153472 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 13:46:30.566152 140009287153472 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0425 13:46:30.566247 140009287153472 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 13:46:30.582329 140009287153472 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0425 13:46:30.582388 140009287153472 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 13:46:30.598385 140009287153472 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0425 13:46:30.598444 140009287153472 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 13:46:30.627969 140009287153472 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0425 13:46:30.628043 140009287153472 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 13:46:30.710008 140009287153472 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0425 13:46:30.710101 140009287153472 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0425 13:46:44.361419 140009287153472 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. I0425 13:46:44.364887 140009287153472 metric_logger.py:301] number parameters: 1.104 billion I0425 13:46:58.929409 140009287153472 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0425 13:46:59.168602 140009287153472 checkpointing.py:798] Waited 0.23917722702026367 seconds for step 0 to finish before starting checkpointing. I0425 13:46:59.171398 140009287153472 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0425 13:46:59.173379 140009287153472 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 0 I0425 13:46:59.174879 140009287153472 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_04_int8/checkpoints/0. I0425 13:46:59.696875 140009287153472 signaling_client.py:364] Using JaxDistributedSignalingClient I0425 13:46:59.697861 140009287153472 jax_array_handlers.py:360] Scheduling D2H of 111 prioritized jax.Array. I0425 13:46:59.697919 140009287153472 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 I0425 13:46:59.987060 140009287153472 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.291768s I0425 13:46:59.987224 140009287153472 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 5.034 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.30643391609191895 s) (per-host) I0425 13:46:59.987282 140009287153472 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.306501s (batch_requests_ready=0.005342s, total_serialization_initiated=0.301085s, others=0.000074s) I0425 13:46:59.987396 140009287153472 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.310625s (all_items=0.000018s, per_item={'items': '0.00001812'}, temp_paths=0.310607) I0425 13:46:59.988125 140009287153472 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.81 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_04_int8/checkpoints/0. I0425 13:46:59.988463 139876527347456 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 14:06:59.988425 I0425 13:46:59.990486 140009287153472 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0425 13:46:59.990836 139873839204096 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0425 13:46:59.990998 140009287153472 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_04_int8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777124819.1713808, 'wait_for_prev_duration_secs': 5.91278076171875e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777124819.1734164, 'checkpointer_blocking_duration_secs': 0.8151974678039551, 'get_old_steps_start_time': 1777124819.9886386, 'get_old_steps_duration_secs': 4.00543212890625e-05, 'checkpoint_manager_blocking_start_time': 1777124819.1690483, 'checkpoint_manager_blocking_duration_secs': 0.821906328201294} I0425 13:46:59.991108 140009287153472 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0425 13:46:59.991191 140009287153472 max_utils.py:750] Memstats: After params initialized: I0425 13:46:59.991242 140009287153472 max_utils.py:756] Using (GB) 0.44 / 31.25 (1.408000%) on TPU_18(process=5,(2,4,0,0)) I0425 13:46:59.991273 140009287153472 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_19(process=5,(3,4,0,0)) I0425 13:46:59.991300 140009287153472 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_22(process=5,(2,5,0,0)) I0425 13:46:59.991324 140009287153472 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_23(process=5,(3,5,0,0)) I0425 13:47:00.321955 140009287153472 metric_logger.py:196] completed step: 0, seconds: 14.563, TFLOP/s/device: 0.933, Tokens/s/device: 140.633, total_weights: 65536, loss: 10.872, lm_loss: 10.872, perplexity: 52668.902 I0425 13:47:00.571581 140009287153472 metric_logger.py:196] completed step: 1, seconds: 1.390, TFLOP/s/device: 9.773, Tokens/s/device: 1473.145, total_weights: 65536, loss: 10.872, lm_loss: 10.872, perplexity: 52668.902 I0425 13:47:01.032839 140009287153472 metric_logger.py:196] completed step: 2, seconds: 0.023, TFLOP/s/device: 583.389, Tokens/s/device: 87934.736, total_weights: 65536, loss: 10.260, lm_loss: 10.260, perplexity: 28557.658 I0425 13:47:01.261907 140009287153472 metric_logger.py:196] completed step: 3, seconds: 0.440, TFLOP/s/device: 30.885, Tokens/s/device: 4655.328, total_weights: 65536, loss: 9.728, lm_loss: 9.728, perplexity: 16789.145 I0425 13:47:01.721643 140009287153472 metric_logger.py:196] completed step: 4, seconds: 0.257, TFLOP/s/device: 52.874, Tokens/s/device: 7969.709, total_weights: 65536, loss: 9.271, lm_loss: 9.271, perplexity: 10625.563 I0425 13:47:01.730376 140009287153472 metric_logger.py:196] completed step: 5, seconds: 0.229, TFLOP/s/device: 59.298, Tokens/s/device: 8938.001, total_weights: 65536, loss: 8.885, lm_loss: 8.885, perplexity: 7225.917 I0425 13:47:02.856734 2952 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0425 13:47:04.864250 139876497094400 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_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_04_int8/checkpoints/0/items/array_metadatas/process_5 I0425 13:47:30.088376 140009287153472 metric_logger.py:196] completed step: 6, seconds: 0.460, TFLOP/s/device: 29.542, Tokens/s/device: 4452.939, total_weights: 65536, loss: 8.586, lm_loss: 8.586, perplexity: 5354.806 I0425 13:47:30.317679 140009287153472 metric_logger.py:196] completed step: 7, seconds: 28.131, TFLOP/s/device: 0.483, Tokens/s/device: 72.802, total_weights: 65536, loss: 8.378, lm_loss: 8.378, perplexity: 4350.756 I0425 13:47:30.547105 140009287153472 metric_logger.py:196] completed step: 8, seconds: 0.236, TFLOP/s/device: 57.664, Tokens/s/device: 8691.740, total_weights: 65536, loss: 8.249, lm_loss: 8.249, perplexity: 3824.619 I0425 13:47:30.778063 140009287153472 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0425 13:47:30.779029 140009287153472 checkpointing.py:798] Waited 0.0009758472442626953 seconds for step 9 to finish before starting checkpointing. I0425 13:47:30.781406 140009287153472 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0425 13:47:32.505996 139876527347456 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 48.122 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 32.82516837120056 s) (per-host) I0425 13:47:32.506116 139876527347456 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 32.517544s. I0425 13:47:40.837513 139876527347456 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 40.848925s. I0425 13:47:40.837814 139873839204096 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0425 13:47:40.837927 139873839204096 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0425 13:47:40.837985 139873839204096 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0425 13:47:40.840366 139873839204096 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0425 13:47:40.840538 140009287153472 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. W0425 13:47:40.840685 140009287153472 checkpoint_manager.py:1452] Waiting for previous save to complete took 10.059265 seconds. If this number is high, consider checkpointing less frequently. I0425 13:47:40.842464 140009287153472 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 9 I0425 13:47:40.844552 140009287153472 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_04_int8/checkpoints/9. I0425 13:47:41.134393 140009287153472 jax_array_handlers.py:360] Scheduling D2H of 111 prioritized jax.Array. I0425 13:47:41.134488 140009287153472 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 I0425 13:47:41.174031 140009287153472 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.041987s I0425 13:47:41.174183 140009287153472 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 28.478 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.05416679382324219 s) (per-host) I0425 13:47:41.174244 140009287153472 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.054239s (batch_requests_ready=0.004509s, total_serialization_initiated=0.049651s, others=0.000079s) I0425 13:47:41.174371 140009287153472 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.058758s (all_items=0.000015s, per_item={'items': '0.00001478'}, temp_paths=0.058744) I0425 13:47:41.175023 140009287153472 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.33 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_04_int8/checkpoints/9. I0425 13:47:41.175365 139873839204096 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 14:07:41.175328 I0425 13:47:41.177291 140009287153472 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0425 13:47:41.177574 139876497094400 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0425 13:47:41.177726 140009287153472 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_04_int8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777124850.7813768, 'wait_for_prev_duration_secs': 10.059264659881592, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777124860.8425038, 'checkpointer_blocking_duration_secs': 0.3329622745513916, 'get_old_steps_start_time': 1777124861.1754894, 'get_old_steps_duration_secs': 2.765655517578125e-05, 'checkpoint_manager_blocking_start_time': 1777124850.7792983, 'checkpoint_manager_blocking_duration_secs': 10.398393154144287} I0425 13:47:41.177898 140009287153472 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0425 13:47:41.177943 140009287153472 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0425 13:47:46.864219 139854713165568 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_20260425_121355/nnx_xpk_feat_nnx_post_train_fixes_20260425_121355_04_int8/checkpoints/9/items/array_metadatas/process_5 I0425 13:48:22.305809 139873839204096 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 38.353 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.185752630233765 s) (per-host) I0425 13:48:22.305935 139873839204096 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.129946s. I0425 13:48:29.143089 139873839204096 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 47.967084s. I0425 13:48:29.143372 139876497094400 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0425 13:48:29.143488 139876497094400 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0425 13:48:29.143536 139876497094400 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0425 13:48:29.145013 139876497094400 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0425 13:48:29.145185 140009287153472 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. I0425 13:48:29.145365 140009287153472 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0425 13:48:29.146326 140009287153472 metric_logger.py:196] completed step: 9, seconds: 0.229, TFLOP/s/device: 59.279, Tokens/s/device: 8935.155, 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: Sat Apr 25 13:48:41 UTC 2026 EXIT_CODE=0