XPK Start: Thu Apr 23 15:16:11 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 15:16:36.383299: 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 15:16:36.595274 134738262370112 max_utils.py:273] Attempting to initialize the jax distributed system... I0423 15:16:45.637669 134738262370112 distributed.py:149] Starting JAX distributed service on [::]:8482 I0423 15:16:45.640210 134738262370112 distributed.py:172] Connecting to JAX distributed service on mt-15-ocdbt-true-sv-6tes4-slice-job-0-0.mt-15-ocdbt-true-sv-6tes4:8482 I0423 15:16:46.796376 134738262370112 max_utils.py:284] Jax distributed system initialized! I0423 15:16:53.052150 134738262370112 max_utils.py:800] System Information: Jax Version: 0.9.2 I0423 15:16:53.052257 134738262370112 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0423 15:16:53.052298 134738262370112 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 15:16:53.052333 134738262370112 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0423 15:16:53.747166 134738262370112 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0423 15:16:53.860290 134738262370112 checkpointing.py:688] Setting up checkpoint logger... I0423 15:16:53.860412 134738262370112 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0423 15:16:53.860459 134738262370112 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0423 15:16:53.860655 134738262370112 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 0x7a8a99510c50>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0423 15:16:56.836763 134738262370112 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0423 15:16:56.837023 134738262370112 checkpoint_manager.py:708] [process=3][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7a754c118890>}, handler_registry=None I0423 15:16:56.837258 134738262370112 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7a754c118890>` 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 15:16:56.837307 134738262370112 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7a763453d640>` 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 15:16:56.837344 134738262370112 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 0x7a754c118890>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7a754c118890>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7a763453d640>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7a763453d640>}). I0423 15:16:56.837677 134738262370112 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0423 15:16:56.837750 134738262370112 async_checkpointer.py:192] [process=3][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7a754c64b6a0> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0423 15:16:57.709470 134738262370112 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_15_ocdbt_true/checkpoints I0423 15:16:57.718089 134738262370112 checkpoint_manager.py:929] [process=3][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=5), 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_15_ocdbt_true/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7a763453c800> I0423 15:16:57.718214 134738262370112 checkpointing.py:302] Checkpoint manager created! I0423 15:16:58.696444 134738262370112 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0423 15:16:58.696569 134738262370112 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0423 15:17:00.058947 134738262370112 maxtext_utils.py:1889] decoder/decoder_norm/scale/value Shape: float32[2048] Physical: (None,) I0423 15:17:00.059068 134738262370112 maxtext_utils.py:1889] decoder/layers/mlp/wi_0/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, None) I0423 15:17:00.059121 134738262370112 maxtext_utils.py:1889] decoder/layers/mlp/wi_1/kernel/value Shape: float32[2048,16,7168] Physical: ('fsdp', None, None) I0423 15:17:00.059164 134738262370112 maxtext_utils.py:1889] decoder/layers/mlp/wo/kernel/value Shape: float32[7168,16,2048] Physical: (None, None, 'fsdp') I0423 15:17:00.059202 134738262370112 maxtext_utils.py:1889] decoder/layers/post_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: (None, None) I0423 15:17:00.059237 134738262370112 maxtext_utils.py:1889] decoder/layers/pre_self_attention_layer_norm/scale/value Shape: float32[2048,16] Physical: (None, None) I0423 15:17:00.059273 134738262370112 maxtext_utils.py:1889] decoder/layers/self_attention/key/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0423 15:17:00.059308 134738262370112 maxtext_utils.py:1889] decoder/layers/self_attention/out/kernel/value Shape: float32[16,16,128,2048] Physical: (None, None, None, 'fsdp') I0423 15:17:00.059343 134738262370112 maxtext_utils.py:1889] decoder/layers/self_attention/query/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0423 15:17:00.059376 134738262370112 maxtext_utils.py:1889] decoder/layers/self_attention/value/kernel/value Shape: float32[2048,16,16,128] Physical: ('fsdp', None, None, None) I0423 15:17:00.059408 134738262370112 maxtext_utils.py:1889] decoder/logits_dense/kernel/value Shape: float32[2048,32000] Physical: ('fsdp', None) I0423 15:17:00.059439 134738262370112 maxtext_utils.py:1889] token_embedder/embedding/value Shape: float32[32000,2048] Physical: (None, 'fsdp') I0423 15:17:00.458644 134738262370112 nnx_decoders.py:465] nnx_decoders/carry Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0423 15:17:00.458739 134738262370112 nnx_decoders.py:465] nnx_decoders/carry Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0423 15:17:00.464082 134738262370112 nnx_decoders.py:465] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0423 15:17:00.464137 134738262370112 nnx_decoders.py:465] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0423 15:17:00.480477 134738262370112 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0423 15:17:00.480548 134738262370112 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0423 15:17:00.496419 134738262370112 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0423 15:17:00.496480 134738262370112 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0423 15:17:00.521653 134738262370112 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 15:17:00.521730 134738262370112 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0423 15:17:00.537608 134738262370112 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 15:17:00.537670 134738262370112 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0423 15:17:00.553453 134738262370112 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 15:17:00.553513 134738262370112 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0423 15:17:00.585619 134738262370112 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0423 15:17:00.585737 134738262370112 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0423 15:17:00.609027 134738262370112 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0423 15:17:00.609091 134738262370112 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0423 15:17:11.683104 134738262370112 max_utils.py:791] Total memory size: 1.5 GB, Output size: 0.4 GB, Temp size: 1.1 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB. I0423 15:17:11.685554 134738262370112 metric_logger.py:301] number parameters: 1.104 billion I0423 15:17:22.876905 134738262370112 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0423 15:17:23.085196 134738262370112 checkpointing.py:798] Waited 0.20827412605285645 seconds for step 0 to finish before starting checkpointing. I0423 15:17:23.087419 134738262370112 checkpoint_manager.py:2009] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0423 15:17:23.089024 134738262370112 checkpoint_manager.py:1512] [process=3] Saving checkpoint at step 0 I0423 15:17:23.090457 134738262370112 event_tracking.py:70] [process=3] [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_15_ocdbt_true/checkpoints/0. I0423 15:17:23.392556 134738262370112 signaling_client.py:364] Using JaxDistributedSignalingClient I0423 15:17:23.393569 134738262370112 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0423 15:17:23.393627 134738262370112 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 15:17:23.673191 134738262370112 base_pytree_checkpoint_handler.py:154] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.281389s I0423 15:17:23.673372 134738262370112 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/blocking_gbytes_per_sec: 5.314 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2903103828430176 s) (per-host) I0423 15:17:23.673423 134738262370112 base_pytree_checkpoint_handler.py:768] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.290372s (batch_requests_ready=0.002927s, total_serialization_initiated=0.287375s, others=0.000070s) I0423 15:17:23.673516 134738262370112 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.294454s (all_items=0.000018s, per_item={'items': '0.00001764'}, temp_paths=0.294437) I0423 15:17:23.674370 134738262370112 event_tracking.py:125] [process=3] [async] Finished blocking save in 0.59 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_15_ocdbt_true/checkpoints/0. I0423 15:17:23.674636 134610534438656 async_checkpointer.py:76] [process=3][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 15:37:23.674613 I0423 15:17:23.689740 134738262370112 checkpoint_manager.py:1560] [process=3][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0423 15:17:23.690025 134608934917888 async_checkpointer.py:280] [process=3][thread=save_finalize] Waiting for background save thread=async_save. I0423 15:17:23.690185 134738262370112 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_15_ocdbt_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776957443.0874014, 'wait_for_prev_duration_secs': 6.628036499023438e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776957443.0890613, 'checkpointer_blocking_duration_secs': 0.5856897830963135, 'get_old_steps_start_time': 1776957443.6747756, 'get_old_steps_duration_secs': 3.0994415283203125e-05, 'checkpoint_manager_blocking_start_time': 1776957443.085595, 'checkpoint_manager_blocking_duration_secs': 0.6045501232147217} I0423 15:17:23.690301 134738262370112 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0423 15:17:23.690372 134738262370112 max_utils.py:750] Memstats: After params initialized: I0423 15:17:23.690423 134738262370112 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_10(process=3,(2,2,0,0)) I0423 15:17:23.690454 134738262370112 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_11(process=3,(3,2,0,0)) I0423 15:17:23.690480 134738262370112 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_14(process=3,(2,3,0,0)) I0423 15:17:23.690503 134738262370112 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_15(process=3,(3,3,0,0)) I0423 15:17:24.004245 134738262370112 metric_logger.py:196] completed step: 0, seconds: 11.190, TFLOP/s/device: 1.214, Tokens/s/device: 183.016, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52786.469 I0423 15:17:24.177335 134738262370112 metric_logger.py:196] completed step: 1, seconds: 1.126, TFLOP/s/device: 12.072, Tokens/s/device: 1819.595, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52786.469 I0423 15:17:24.589624 134738262370112 metric_logger.py:196] completed step: 2, seconds: 0.027, TFLOP/s/device: 501.222, Tokens/s/device: 75549.653, total_weights: 65536, loss: 10.560, lm_loss: 10.560, perplexity: 38565.637 I0423 15:17:24.737184 134738262370112 metric_logger.py:196] completed step: 3, seconds: 0.402, TFLOP/s/device: 33.823, Tokens/s/device: 5098.180, total_weights: 65536, loss: 9.979, lm_loss: 9.979, perplexity: 21564.932 I0423 15:17:24.742833 134738262370112 checkpointing.py:794] Waiting for step 5 to finish before checkpoint... I0423 15:17:25.032505 134738262370112 checkpointing.py:798] Waited 0.2896454334259033 seconds for step 5 to finish before starting checkpointing. I0423 15:17:25.035172 134738262370112 checkpoint_manager.py:2020] [process=3][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0423 15:17:26.947539 2814 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0423 15:17:29.009917 134608943310592 array_metadata_store.py:203] [process=3][thread=array_type_handler] Wrote 69 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_15_ocdbt_true/checkpoints/0/items/array_metadatas/process_3 I0423 15:18:00.423624 134610534438656 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/gbytes_per_sec: 42.645 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 37.04052758216858 s) (per-host) I0423 15:18:00.423737 134610534438656 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 36.749028s. I0423 15:18:10.029578 134610534438656 async_checkpointer.py:160] [process=3][thread=async_save] Background save thread done. Time taken: 46.354852s. I0423 15:18:10.029897 134608934917888 async_checkpointer.py:288] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save. I0423 15:18:10.030045 134608934917888 async_checkpointer.py:298] [process=3][thread=save_finalize] No errors found in background save thread=async_save. I0423 15:18:10.030097 134608934917888 checkpoint_manager.py:2137] [process=3][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0423 15:18:10.031618 134608934917888 checkpoint_manager.py:2146] [process=3][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0423 15:18:10.031816 134738262370112 checkpoint_manager.py:2032] [process=3][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0. W0423 15:18:10.031979 134738262370112 checkpoint_manager.py:1452] Waiting for previous save to complete took 44.996798 seconds. If this number is high, consider checkpointing less frequently. I0423 15:18:10.034225 134738262370112 checkpoint_manager.py:1512] [process=3] Saving checkpoint at step 5 I0423 15:18:10.036702 134738262370112 event_tracking.py:70] [process=3] [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_15_ocdbt_true/checkpoints/5. I0423 15:18:10.331143 134738262370112 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0423 15:18:10.331233 134738262370112 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 15:18:10.373253 134738262370112 base_pytree_checkpoint_handler.py:154] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.043678s I0423 15:18:10.373438 134738262370112 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/blocking_gbytes_per_sec: 30.344 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.05083656311035156 s) (per-host) I0423 15:18:10.373490 134738262370112 base_pytree_checkpoint_handler.py:768] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.050903s (batch_requests_ready=0.002548s, total_serialization_initiated=0.048283s, others=0.000073s) I0423 15:18:10.373583 134738262370112 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.056493s (all_items=0.000015s, per_item={'items': '0.00001478'}, temp_paths=0.056478) I0423 15:18:10.374303 134738262370112 event_tracking.py:125] [process=3] [async] Finished blocking save in 0.34 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_15_ocdbt_true/checkpoints/5. I0423 15:18:10.374757 134608934917888 async_checkpointer.py:76] [process=3][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 15:38:10.374715 I0423 15:18:10.390006 134738262370112 checkpoint_manager.py:1560] [process=3][thread=MainThread][step=5] Starting CheckpointManager Save Finalize thread=save_finalize I0423 15:18:10.390291 134603011573504 async_checkpointer.py:280] [process=3][thread=save_finalize] Waiting for background save thread=async_save. I0423 15:18:10.390451 134738262370112 standard_logger.py:34] {'step': 5, '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_15_ocdbt_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776957445.0351436, 'wait_for_prev_duration_secs': 44.996798038482666, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776957490.034264, 'checkpointer_blocking_duration_secs': 0.3406369686126709, 'get_old_steps_start_time': 1776957490.3749406, 'get_old_steps_duration_secs': 3.0040740966796875e-05, 'checkpoint_manager_blocking_start_time': 1776957445.0328543, 'checkpoint_manager_blocking_duration_secs': 45.35756278038025} I0423 15:18:10.390568 134738262370112 checkpointing.py:409] Started an asynchronous checkpoint save for step 5 I0423 15:18:10.391682 134738262370112 metric_logger.py:196] completed step: 4, seconds: 0.164, TFLOP/s/device: 82.737, Tokens/s/device: 12470.999, total_weights: 65536, loss: 9.457, lm_loss: 9.457, perplexity: 12802.436 I0423 15:18:10.399359 134738262370112 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.232, Tokens/s/device: 13902.277, total_weights: 65536, loss: 8.955, lm_loss: 8.955, perplexity: 7748.778 I0423 15:18:15.944184 134608943310592 array_metadata_store.py:203] [process=3][thread=array_type_handler] Wrote 69 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_15_ocdbt_true/checkpoints/5/items/array_metadatas/process_3 I0423 15:18:33.668512 134738262370112 metric_logger.py:196] completed step: 6, seconds: 45.655, TFLOP/s/device: 0.298, Tokens/s/device: 44.859, total_weights: 65536, loss: 8.465, lm_loss: 8.465, perplexity: 4743.984 I0423 15:18:33.816072 134738262370112 metric_logger.py:196] completed step: 7, seconds: 23.124, TFLOP/s/device: 0.588, Tokens/s/device: 88.567, total_weights: 65536, loss: 7.998, lm_loss: 7.998, perplexity: 2976.266 I0423 15:18:33.963558 134738262370112 metric_logger.py:196] completed step: 8, seconds: 0.153, TFLOP/s/device: 88.641, Tokens/s/device: 13360.995, total_weights: 65536, loss: 7.567, lm_loss: 7.567, perplexity: 1933.479 I0423 15:18:34.111792 134738262370112 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0423 15:18:34.112468 134738262370112 checkpointing.py:798] Waited 0.0006873607635498047 seconds for step 9 to finish before starting checkpointing. I0423 15:18:34.114567 134738262370112 checkpoint_manager.py:2020] [process=3][thread=MainThread][step=5][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0423 15:18:52.473647 134608934917888 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/gbytes_per_sec: 37.475 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.15101218223572 s) (per-host) I0423 15:18:52.473801 134608934917888 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.098933s. I0423 15:19:01.669431 134608934917888 async_checkpointer.py:160] [process=3][thread=async_save] Background save thread done. Time taken: 51.294548s. I0423 15:19:01.669712 134603011573504 async_checkpointer.py:288] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save. I0423 15:19:01.669835 134603011573504 async_checkpointer.py:298] [process=3][thread=save_finalize] No errors found in background save thread=async_save. I0423 15:19:01.669883 134603011573504 checkpoint_manager.py:2137] [process=3][thread=save_finalize][step=5] CheckpointManager Save Finalize is syncing with other hosts... I0423 15:19:01.672437 134603011573504 checkpoint_manager.py:2146] [process=3][thread=save_finalize][step=5] CheckpointManager Save Finalize is done on all hosts. I0423 15:19:01.672619 134738262370112 checkpoint_manager.py:2032] [process=3][thread=MainThread][step=5][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=5. W0423 15:19:01.672755 134738262370112 checkpoint_manager.py:1452] Waiting for previous save to complete took 27.558207 seconds. If this number is high, consider checkpointing less frequently. I0423 15:19:01.674326 134738262370112 checkpoint_manager.py:1512] [process=3] Saving checkpoint at step 9 I0423 15:19:01.676388 134738262370112 event_tracking.py:70] [process=3] [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_15_ocdbt_true/checkpoints/9. I0423 15:19:01.984655 134738262370112 jax_array_handlers.py:360] Scheduling D2H of 69 prioritized jax.Array. I0423 15:19:01.984748 134738262370112 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 15:19:02.026188 134738262370112 base_pytree_checkpoint_handler.py:154] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.043185s I0423 15:19:02.026355 134738262370112 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/blocking_gbytes_per_sec: 30.882 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.049950361251831055 s) (per-host) I0423 15:19:02.026404 134738262370112 base_pytree_checkpoint_handler.py:768] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.050008s (batch_requests_ready=0.002628s, total_serialization_initiated=0.047318s, others=0.000063s) I0423 15:19:02.026499 134738262370112 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.054156s (all_items=0.000010s, per_item={'items': '0.00001049'}, temp_paths=0.054145) I0423 15:19:02.027148 134738262370112 event_tracking.py:125] [process=3] [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_15_ocdbt_true/checkpoints/9. I0423 15:19:02.027472 134608943310592 async_checkpointer.py:76] [process=3][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 15:39:02.027431 I0423 15:19:02.029338 134738262370112 checkpoint_manager.py:1560] [process=3][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0423 15:19:02.029695 134603011573504 async_checkpointer.py:280] [process=3][thread=save_finalize] Waiting for background save thread=async_save. I0423 15:19:02.029830 134738262370112 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_15_ocdbt_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776957514.1145246, 'wait_for_prev_duration_secs': 27.558207035064697, 'time_between_consecutive_saves_sec': 24.082865953445435, 'checkpointer_blocking_start_time': 1776957541.674366, 'checkpointer_blocking_duration_secs': 0.35325169563293457, 'get_old_steps_start_time': 1776957542.027636, 'get_old_steps_duration_secs': 2.5272369384765625e-05, 'checkpoint_manager_blocking_start_time': 1776957514.1127005, 'checkpoint_manager_blocking_duration_secs': 27.917098999023438} I0423 15:19:02.030025 134738262370112 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0423 15:19:02.030071 134738262370112 checkpoint_manager.py:2020] [process=3][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0423 15:19:07.799956 134608409077504 array_metadata_store.py:203] [process=3][thread=array_type_handler] Wrote 69 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_15_ocdbt_true/checkpoints/9/items/array_metadatas/process_3 I0423 15:19:44.631679 134608943310592 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/gbytes_per_sec: 37.032 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.655232667922974 s) (per-host) I0423 15:19:44.631833 134608943310592 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.604247s. I0423 15:19:51.868788 134608943310592 async_checkpointer.py:160] [process=3][thread=async_save] Background save thread done. Time taken: 49.841185s. I0423 15:19:51.869102 134603011573504 async_checkpointer.py:288] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save. I0423 15:19:51.869221 134603011573504 async_checkpointer.py:298] [process=3][thread=save_finalize] No errors found in background save thread=async_save. I0423 15:19:51.869270 134603011573504 checkpoint_manager.py:2137] [process=3][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0423 15:19:51.871108 134603011573504 checkpoint_manager.py:2146] [process=3][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0423 15:19:51.871229 134738262370112 checkpoint_manager.py:2032] [process=3][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9. I0423 15:19:51.871321 134738262370112 checkpoint_manager.py:2009] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0423 15:19:51.872352 134738262370112 metric_logger.py:196] completed step: 9, seconds: 0.148, TFLOP/s/device: 91.899, Tokens/s/device: 13851.971, total_weights: 65536, loss: 7.176, lm_loss: 7.176, perplexity: 1307.366 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops XPK End: Thu Apr 23 15:20:01 UTC 2026 EXIT_CODE=0