XPK Start: Thu Apr 23 14:28:15 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. 2026-04-23 14:28:40.054903: 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) I0423 14:28:40.265962 137505344272192 max_utils.py:273] Attempting to initialize the jax distributed system... I0423 14:28:49.305924 137505344272192 distributed.py:149] Starting JAX distributed service on [::]:8482 I0423 14:28:49.308405 137505344272192 distributed.py:172] Connecting to JAX distributed service on mt-04-int8-w82kj-slice-job-0-0.mt-04-int8-w82kj:8482 I0423 14:28:50.478194 137505344272192 max_utils.py:284] Jax distributed system initialized! I0423 14:28:55.598033 137505344272192 max_utils.py:800] System Information: Jax Version: 0.9.2 I0423 14:28:55.598139 137505344272192 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0423 14:28:55.598178 137505344272192 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 I0423 14:28:55.598215 137505344272192 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0423 14:28:56.295000 137505344272192 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0423 14:28:56.855160 137505344272192 checkpointing.py:688] Setting up checkpoint logger... I0423 14:28:56.855286 137505344272192 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0423 14:28:56.855332 137505344272192 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0423 14:28:56.855544 137505344272192 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 0x7d0ee3b18050>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0423 14:28:59.744758 137505344272192 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0423 14:28:59.744996 137505344272192 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 0x7cfa401c4e60>}, handler_registry=None I0423 14:28:59.745239 137505344272192 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7cfa401c4e60>` 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`. I0423 14:28:59.745295 137505344272192 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7cfa405a92b0>` 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`. I0423 14:28:59.745333 137505344272192 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 0x7cfa401c4e60>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7cfa401c4e60>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7cfa405a92b0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7cfa405a92b0>}). I0423 14:28:59.745682 137505344272192 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0423 14:28:59.745754 137505344272192 async_checkpointer.py:192] [process=5][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7cfa4057c720> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0423 14:29:00.984758 137505344272192 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_04_int8/checkpoints I0423 14:29:01.393280 137505344272192 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_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_04_int8/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7cfa40125a00> I0423 14:29:01.393450 137505344272192 checkpointing.py:302] Checkpoint manager created! I0423 14:29:02.758323 137505344272192 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0423 14:29:02.758441 137505344272192 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0423 14:29:05.127153 137505344272192 maxtext_utils.py:1889] decoder/decoder_norm/scale/value Shape: float32[2048] Physical: (None,) I0423 14:29:05.127275 137505344272192 maxtext_utils.py:1889] decoder/layers/mlp/wi_0/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, None) I0423 14:29:05.127330 137505344272192 maxtext_utils.py:1889] decoder/layers/mlp/wi_1/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, None) I0423 14:29:05.127374 137505344272192 maxtext_utils.py:1889] decoder/layers/mlp/wo/kernel/value Shape: float32[7168,16,2048] Physical: (None, None, 'fsdp') I0423 14:29:05.127412 137505344272192 maxtext_utils.py:1889] decoder/layers/post_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: (None, None) I0423 14:29:05.127446 137505344272192 maxtext_utils.py:1889] decoder/layers/pre_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: (None, None) I0423 14:29:05.127482 137505344272192 maxtext_utils.py:1889] decoder/layers/self_attention/key/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0423 14:29:05.127517 137505344272192 maxtext_utils.py:1889] decoder/layers/self_attention/out/kernel/value Shape: float32[16,16,128,2048] Physical: (None, None, None, 'fsdp') I0423 14:29:05.127551 137505344272192 maxtext_utils.py:1889] decoder/layers/self_attention/query/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0423 14:29:05.127584 137505344272192 maxtext_utils.py:1889] decoder/layers/self_attention/value/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0423 14:29:05.127616 137505344272192 maxtext_utils.py:1889] decoder/logits_dense/kernel/value Shape: float32[2048,32000] Physical: ('fsdp', None) I0423 14:29:05.127659 137505344272192 maxtext_utils.py:1889] token_embedder/embedding/value Shape: float32[32000,2048] Physical: (None, 'fsdp') I0423 14:29:05.932359 137505344272192 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0423 14:29:05.932451 137505344272192 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0423 14:29:05.938048 137505344272192 nnx_decoders.py:465] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0423 14:29:05.938104 137505344272192 nnx_decoders.py:465] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0423 14:29:05.954516 137505344272192 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0423 14:29:05.954575 137505344272192 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0423 14:29:05.970268 137505344272192 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0423 14:29:05.970327 137505344272192 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0423 14:29:06.049874 137505344272192 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0423 14:29:06.049964 137505344272192 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0423 14:29:06.065834 137505344272192 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0423 14:29:06.065899 137505344272192 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0423 14:29:06.081502 137505344272192 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0423 14:29:06.081563 137505344272192 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0423 14:29:06.111263 137505344272192 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0423 14:29:06.111330 137505344272192 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0423 14:29:06.192310 137505344272192 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0423 14:29:06.192395 137505344272192 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0423 14:29:19.933449 137505344272192 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. I0423 14:29:19.937002 137505344272192 metric_logger.py:301] number parameters: 1.104 billion I0423 14:29:34.635325 137505344272192 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0423 14:29:34.877725 137505344272192 checkpointing.py:798] Waited 0.2423841953277588 seconds for step 0 to finish before starting checkpointing. I0423 14:29:34.880110 137505344272192 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0423 14:29:34.882117 137505344272192 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 0 I0423 14:29:34.883743 137505344272192 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_04_int8/checkpoints/0. I0423 14:29:35.616740 137505344272192 signaling_client.py:364] Using JaxDistributedSignalingClient I0423 14:29:35.617783 137505344272192 jax_array_handlers.py:360] Scheduling D2H of 111 prioritized jax.Array. I0423 14:29:35.617843 137505344272192 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 I0423 14:29:35.893940 137505344272192 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.278800s I0423 14:29:35.894117 137505344272192 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 5.254 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2936134338378906 s) (per-host) I0423 14:29:35.894169 137505344272192 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.293676s (batch_requests_ready=0.005376s, total_serialization_initiated=0.288229s, others=0.000071s) I0423 14:29:35.894283 137505344272192 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.297857s (all_items=0.000018s, per_item={'items': '0.00001788'}, temp_paths=0.297839) I0423 14:29:35.895102 137505344272192 event_tracking.py:125] [process=5] [async] Finished blocking save in 1.01 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_04_int8/checkpoints/0. I0423 14:29:35.895395 137375715530496 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 14:49:35.895361 I0423 14:29:35.905159 137505344272192 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0423 14:29:35.905457 137373560071936 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0423 14:29:35.905613 137505344272192 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_04_int8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776954574.880092, 'wait_for_prev_duration_secs': 5.8650970458984375e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776954574.88216, 'checkpointer_blocking_duration_secs': 1.013383150100708, 'get_old_steps_start_time': 1776954575.8955688, 'get_old_steps_duration_secs': 3.0279159545898438e-05, 'checkpoint_manager_blocking_start_time': 1776954574.8781683, 'checkpoint_manager_blocking_duration_secs': 1.0274074077606201} I0423 14:29:35.905738 137505344272192 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0423 14:29:35.905823 137505344272192 max_utils.py:750] Memstats: After params initialized: I0423 14:29:35.905873 137505344272192 max_utils.py:756] Using (GB) 0.44 / 31.25 (1.408000%) on TPU_18(process=5,(2,4,0,0)) I0423 14:29:35.905904 137505344272192 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_19(process=5,(3,4,0,0)) I0423 14:29:35.905930 137505344272192 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_22(process=5,(2,5,0,0)) I0423 14:29:35.905954 137505344272192 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_23(process=5,(3,5,0,0)) I0423 14:29:36.222053 137505344272192 metric_logger.py:196] completed step: 0, seconds: 14.696, TFLOP/s/device: 0.925, Tokens/s/device: 139.353, total_weights: 65536, loss: 10.872, lm_loss: 10.872, perplexity: 52668.902 I0423 14:29:36.487902 137505344272192 metric_logger.py:196] completed step: 1, seconds: 1.585, TFLOP/s/device: 8.575, Tokens/s/device: 1292.502, total_weights: 65536, loss: 10.872, lm_loss: 10.872, perplexity: 52668.902 I0423 14:29:36.933708 137505344272192 metric_logger.py:196] completed step: 2, seconds: 0.040, TFLOP/s/device: 341.969, Tokens/s/device: 51545.354, total_weights: 65536, loss: 10.260, lm_loss: 10.260, perplexity: 28557.658 I0423 14:29:37.163075 137505344272192 metric_logger.py:196] completed step: 3, seconds: 0.425, TFLOP/s/device: 31.985, Tokens/s/device: 4821.058, total_weights: 65536, loss: 9.728, lm_loss: 9.728, perplexity: 16789.145 I0423 14:29:37.623147 137505344272192 metric_logger.py:196] completed step: 4, seconds: 0.256, TFLOP/s/device: 53.027, Tokens/s/device: 7992.850, total_weights: 65536, loss: 9.271, lm_loss: 9.271, perplexity: 10625.563 I0423 14:29:37.631500 137505344272192 metric_logger.py:196] completed step: 5, seconds: 0.229, TFLOP/s/device: 59.240, Tokens/s/device: 8929.272, total_weights: 65536, loss: 8.885, lm_loss: 8.885, perplexity: 7225.917 I0423 14:29:39.006872 2877 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0423 14:29:41.049694 137375686563584 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_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_04_int8/checkpoints/0/items/array_metadatas/process_5 I0423 14:30:05.567677 137505344272192 metric_logger.py:196] completed step: 6, seconds: 0.460, TFLOP/s/device: 29.525, Tokens/s/device: 4450.403, total_weights: 65536, loss: 8.586, lm_loss: 8.586, perplexity: 5354.806 I0423 14:30:05.796867 137505344272192 metric_logger.py:196] completed step: 7, seconds: 27.709, TFLOP/s/device: 0.490, Tokens/s/device: 73.910, total_weights: 65536, loss: 8.378, lm_loss: 8.378, perplexity: 4350.756 I0423 14:30:06.026286 137505344272192 metric_logger.py:196] completed step: 8, seconds: 0.235, TFLOP/s/device: 57.757, Tokens/s/device: 8705.743, total_weights: 65536, loss: 8.249, lm_loss: 8.249, perplexity: 3824.619 I0423 14:30:06.257030 137505344272192 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0423 14:30:06.258069 137505344272192 checkpointing.py:798] Waited 0.0010521411895751953 seconds for step 9 to finish before starting checkpointing. I0423 14:30:06.260108 137505344272192 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0423 14:30:09.333161 137375715530496 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 46.827 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 33.73262047767639 s) (per-host) I0423 14:30:09.333287 137375715530496 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 33.437783s. I0423 14:30:17.189355 137375715530496 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 41.293835s. I0423 14:30:17.189627 137373560071936 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0423 14:30:17.189769 137373560071936 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0423 14:30:17.189819 137373560071936 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0423 14:30:17.192368 137373560071936 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0423 14:30:17.192534 137505344272192 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. W0423 14:30:17.192686 137505344272192 checkpoint_manager.py:1452] Waiting for previous save to complete took 10.932558 seconds. If this number is high, consider checkpointing less frequently. I0423 14:30:17.194434 137505344272192 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 9 I0423 14:30:17.196534 137505344272192 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_04_int8/checkpoints/9. I0423 14:30:17.504741 137505344272192 jax_array_handlers.py:360] Scheduling D2H of 111 prioritized jax.Array. I0423 14:30:17.504833 137505344272192 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 I0423 14:30:17.542615 137505344272192 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.040315s I0423 14:30:17.542797 137505344272192 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 29.370 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.052521467208862305 s) (per-host) I0423 14:30:17.542849 137505344272192 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.052585s (batch_requests_ready=0.004534s, total_serialization_initiated=0.047979s, others=0.000071s) I0423 14:30:17.542972 137505344272192 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.056755s (all_items=0.000017s, per_item={'items': '0.00001693'}, temp_paths=0.056738) I0423 14:30:17.543613 137505344272192 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.35 seconds. Continuing save @ gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_04_int8/checkpoints/9. I0423 14:30:17.543952 137373560071936 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 14:50:17.543916 I0423 14:30:17.545871 137505344272192 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0423 14:30:17.546258 137375686563584 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0423 14:30:17.546394 137505344272192 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/nnx_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_04_int8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776954606.2600796, 'wait_for_prev_duration_secs': 10.932558059692383, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776954617.1944745, 'checkpointer_blocking_duration_secs': 0.34961509704589844, 'get_old_steps_start_time': 1776954617.5441103, 'get_old_steps_duration_secs': 3.0994415283203125e-05, 'checkpoint_manager_blocking_start_time': 1776954606.2583523, 'checkpoint_manager_blocking_duration_secs': 11.288008451461792} I0423 14:30:17.546570 137505344272192 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0423 14:30:17.546616 137505344272192 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0423 14:30:22.745957 137349669304064 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_20260423_124541/nnx_xpk_feat_nnx_post_train_fixes_20260423_124541_04_int8/checkpoints/9/items/array_metadatas/process_5 I0423 14:30:59.892888 137373560071936 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 37.252 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.402576208114624 s) (per-host) I0423 14:30:59.893017 137373560071936 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.348957s. I0423 14:31:07.577927 137373560071936 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 50.033852s. I0423 14:31:07.578220 137375686563584 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0423 14:31:07.578337 137375686563584 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0423 14:31:07.578387 137375686563584 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0423 14:31:07.580786 137375686563584 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0423 14:31:07.580905 137505344272192 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. I0423 14:31:07.581024 137505344272192 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0423 14:31:07.581965 137505344272192 metric_logger.py:196] completed step: 9, seconds: 0.229, TFLOP/s/device: 59.316, Tokens/s/device: 8940.694, 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: Thu Apr 23 14:31:20 UTC 2026 EXIT_CODE=0