main (8a17c3d19) vs feat/nnx-post-train-fixes (7f06c99ac)| Metric | main 8a17c3d19 | feat/nnx-post-train-fixes 7f06c99ac | Diff (feat/nnx-post-train-fixes − main) |
|---|---|---|---|
| Parameters | 1.104 billion | 1.104 billion | — |
| Final loss | 7.1810 | 7.1810 | 0 |
| TFLOP/s | 92.149 | 92.301 | +0.152 |
| Tok/s | 13889.7 | 13912.7 | +22.928 |
| Avg s/step | 4.661 | 4.521 | -0.14 |
| Memory % | 1.38 | 1.38 | 0 |
| JAX | 0.9.2 | 0.9.2 | — |
Diff = branch value − main value. Green = branch improved. Red = branch regressed.
XPK Start: Wed Apr 22 08:23:48 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. 2026-04-22 08:24:13.109354: 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) I0422 08:24:13.321731 136953331668800 max_utils.py:273] Attempting to initialize the jax distributed system... I0422 08:24:22.360110 136953331668800 distributed.py:149] Starting JAX distributed service on [::]:8482 I0422 08:24:22.362589 136953331668800 distributed.py:172] Connecting to JAX distributed service on mt-15-ocdbt-false-sv-ezjru-slice-job-0-0.mt-15-ocdbt-false-sv-ezjru:8482 I0422 08:24:23.555696 136953331668800 max_utils.py:284] Jax distributed system initialized! I0422 08:24:29.860690 136953331668800 max_utils.py:800] System Information: Jax Version: 0.9.2 I0422 08:24:29.860796 136953331668800 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0422 08:24:29.860836 136953331668800 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 I0422 08:24:29.860871 136953331668800 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0422 08:24:30.551675 136953331668800 maxtext_utils.py:1565] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0422 08:24:30.551982 136953331668800 checkpointing.py:677] Setting up checkpoint logger... I0422 08:24:30.552038 136953331668800 checkpointing.py:233] Creating checkpoint manager with ocdbt=False and zarr3=True I0422 08:24:30.552083 136953331668800 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0422 08:24:30.552436 136953331668800 base_pytree_checkpoint_handler.py:441] Created BasePyTreeCheckpointHandler: use_ocdbt=False, use_zarr3=True, pytree_metadata_options=PyTreeMetadataOptions(support_rich_types=False), array_metadata_store=<orbax.checkpoint._src.metadata.array_metadata_store.Store object at 0x7c8e52b1cbc0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0422 08:24:33.474181 136953331668800 checkpointing.py:265] Enabling policy for fixed interval checkpointing. I0422 08:24:33.474418 136953331668800 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 0x7c79f471de20>}, handler_registry=None I0422 08:24:33.474663 136953331668800 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7c79f471de20>` 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`. I0422 08:24:33.474713 136953331668800 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7c79f47205f0>` 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`. I0422 08:24:33.474750 136953331668800 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 0x7c79f471de20>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7c79f471de20>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7c79f47205f0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7c79f47205f0>}). I0422 08:24:33.475085 136953331668800 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0422 08:24:33.475155 136953331668800 async_checkpointer.py:192] [process=3][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7c78fc4f1800> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0422 08:24:34.602389 136953331668800 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_15_ocdbt_false/checkpoints I0422 08:24:35.048096 136953331668800 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/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_15_ocdbt_false/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7c79f471ed80> I0422 08:24:35.048280 136953331668800 checkpointing.py:301] Checkpoint manager created! I0422 08:24:35.990427 136953331668800 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0422 08:24:35.990549 136953331668800 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0422 08:24:36.370740 136953331668800 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0422 08:24:36.370836 136953331668800 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0422 08:24:36.387109 136953331668800 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0422 08:24:36.387168 136953331668800 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0422 08:24:36.416241 136953331668800 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0422 08:24:36.416345 136953331668800 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 08:24:36.432718 136953331668800 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0422 08:24:36.432778 136953331668800 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 08:24:36.449033 136953331668800 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0422 08:24:36.449093 136953331668800 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 08:24:36.473771 136953331668800 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0422 08:24:36.473841 136953331668800 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 08:24:36.494915 136953331668800 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0422 08:24:36.494994 136953331668800 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0422 08:24:36.704665 136953331668800 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint I0422 08:24:36.704781 136953331668800 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0422 08:24:38.157965 136953331668800 maxtext_utils.py:1668] params/params/decoder/decoder_norm/scale Shape: float32[2048] Logical: P('norm',) Physical: (None,) I0422 08:24:38.158097 136953331668800 maxtext_utils.py:1668] params/params/decoder/layers/mlp/wi_0/kernel Shape: float32[2048,16,7168] Logical: P('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0422 08:24:38.158152 136953331668800 maxtext_utils.py:1668] params/params/decoder/layers/mlp/wi_1/kernel Shape: float32[2048,16,7168] Logical: P('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0422 08:24:38.158212 136953331668800 maxtext_utils.py:1668] params/params/decoder/layers/mlp/wo/kernel Shape: float32[7168,16,2048] Logical: P('mlp', 'layers', 'embed') Physical: (None, None, 'fsdp') I0422 08:24:38.158267 136953331668800 maxtext_utils.py:1668] params/params/decoder/layers/post_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: P('norm', 'layers') Physical: (None, None) I0422 08:24:38.158307 136953331668800 maxtext_utils.py:1668] params/params/decoder/layers/pre_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: P('norm', 'layers') Physical: (None, None) I0422 08:24:38.158362 136953331668800 maxtext_utils.py:1668] params/params/decoder/layers/self_attention/key/kernel Shape: float32[2048,16,16,128] Logical: P('embed', 'layers', 'kv_heads', 'kv_head_dim') Physical: ('fsdp', None, None, None) I0422 08:24:38.158416 136953331668800 maxtext_utils.py:1668] params/params/decoder/layers/self_attention/out/kernel Shape: float32[16,16,128,2048] Logical: P('heads', 'layers', 'kv', 'embed') Physical: (None, None, None, 'fsdp') I0422 08:24:38.158457 136953331668800 maxtext_utils.py:1668] params/params/decoder/layers/self_attention/query/kernel Shape: float32[2048,16,16,128] Logical: P('embed', 'layers', 'q_heads', 'kv') Physical: ('fsdp', None, None, None) I0422 08:24:38.158495 136953331668800 maxtext_utils.py:1668] params/params/decoder/layers/self_attention/value/kernel Shape: float32[2048,16,16,128] Logical: P('embed', 'layers', 'kv_heads', 'kv_head_dim') Physical: ('fsdp', None, None, None) I0422 08:24:38.158544 136953331668800 maxtext_utils.py:1668] params/params/decoder/logits_dense/kernel Shape: float32[2048,32000] Logical: P('embed_vocab', 'vocab') Physical: ('fsdp', None) I0422 08:24:38.158593 136953331668800 maxtext_utils.py:1668] params/params/token_embedder/embedding Shape: float32[32000,2048] Logical: P('vocab', 'embed_vocab') Physical: (None, 'fsdp') I0422 08:24:38.657458 136953331668800 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0422 08:24:38.657555 136953331668800 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None). I0422 08:24:38.672920 136953331668800 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0422 08:24:38.672991 136953331668800 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None). I0422 08:24:49.854768 136953331668800 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. I0422 08:24:49.855643 136953331668800 metric_logger.py:301] number parameters: 1.104 billion I0422 08:25:01.475031 136953331668800 checkpointing.py:772] Waiting for step 0 to finish before checkpoint... I0422 08:25:01.629542 136953331668800 checkpointing.py:776] Waited 0.15448999404907227 seconds for step 0 to finish before starting checkpointing. I0422 08:25:01.632953 136953331668800 checkpoint_manager.py:2009] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0422 08:25:01.634500 136953331668800 checkpoint_manager.py:1512] [process=3] Saving checkpoint at step 0 I0422 08:25:01.635972 136953331668800 event_tracking.py:70] [process=3] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_15_ocdbt_false/checkpoints/0. I0422 08:25:02.370804 136953331668800 signaling_client.py:364] Using JaxDistributedSignalingClient I0422 08:25:02.371762 136953331668800 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0422 08:25:02.371822 136953331668800 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 I0422 08:25:02.648649 136953331668800 base_pytree_checkpoint_handler.py:154] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.277923s I0422 08:25:02.648838 136953331668800 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/blocking_gbytes_per_sec: 5.442 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.28343820571899414 s) (per-host) I0422 08:25:02.648895 136953331668800 base_pytree_checkpoint_handler.py:768] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.283506s (batch_requests_ready=0.002216s, total_serialization_initiated=0.281214s, others=0.000077s) I0422 08:25:02.649021 136953331668800 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.287686s (all_items=0.000017s, per_item={'items': '0.00001669'}, temp_paths=0.287669) I0422 08:25:02.649803 136953331668800 event_tracking.py:125] [process=3] [async] Finished blocking save in 1.02 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_15_ocdbt_false/checkpoints/0. I0422 08:25:02.650104 136822327863040 async_checkpointer.py:76] [process=3][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 08:45:02.650069 I0422 08:25:03.063983 136953331668800 checkpoint_manager.py:1560] [process=3][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0422 08:25:03.064371 136823933495040 async_checkpointer.py:280] [process=3][thread=save_finalize] Waiting for background save thread=async_save. I0422 08:25:03.064545 136953331668800 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_15_ocdbt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776846301.6329226, 'wait_for_prev_duration_secs': 6.198883056640625e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776846301.6345396, 'checkpointer_blocking_duration_secs': 1.0156922340393066, 'get_old_steps_start_time': 1776846302.650257, 'get_old_steps_duration_secs': 3.0517578125e-05, 'checkpoint_manager_blocking_start_time': 1776846301.6300714, 'checkpoint_manager_blocking_duration_secs': 1.4344301223754883} I0422 08:25:03.064654 136953331668800 checkpointing.py:408] Started an asynchronous checkpoint save for step 0 I0422 08:25:03.064705 136953331668800 max_utils.py:750] Memstats: After params initialized: I0422 08:25:03.064769 136953331668800 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_10(process=3,(2,2,0,0)) I0422 08:25:03.064804 136953331668800 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_11(process=3,(3,2,0,0)) I0422 08:25:03.064832 136953331668800 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_14(process=3,(2,3,0,0)) I0422 08:25:03.064858 136953331668800 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_15(process=3,(3,3,0,0)) I0422 08:25:03.382185 136953331668800 metric_logger.py:196] completed step: 0, seconds: 11.619, TFLOP/s/device: 1.169, Tokens/s/device: 176.259, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875 I0422 08:25:03.561919 136953331668800 metric_logger.py:196] completed step: 1, seconds: 1.906, TFLOP/s/device: 7.130, Tokens/s/device: 1074.723, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875 I0422 08:25:04.002132 136953331668800 metric_logger.py:196] completed step: 2, seconds: 0.033, TFLOP/s/device: 417.975, Tokens/s/device: 63001.815, total_weights: 65536, loss: 10.560, lm_loss: 10.560, perplexity: 38547.719 I0422 08:25:04.149432 136953331668800 metric_logger.py:196] completed step: 3, seconds: 0.440, TFLOP/s/device: 30.855, Tokens/s/device: 4650.793, total_weights: 65536, loss: 9.980, lm_loss: 9.980, perplexity: 21590.506 I0422 08:25:04.153783 136953331668800 checkpointing.py:772] Waiting for step 5 to finish before checkpoint... I0422 08:25:04.443536 136953331668800 checkpointing.py:776] Waited 0.2897176742553711 seconds for step 5 to finish before starting checkpointing. I0422 08:25:04.446559 136953331668800 checkpoint_manager.py:2020] [process=3][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0422 08:25:06.203547 2809 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0422 08:25:08.660766 136822840407808 array_metadata_store.py:203] [process=3][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_15_ocdbt_false/checkpoints/0/items/array_metadatas/process_3 I0422 08:25:13.325314 136822327863040 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/gbytes_per_sec: 144.125 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 10.95987844467163 s) (per-host) I0422 08:25:13.325434 136822327863040 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 10.675238s. I0422 08:25:20.103124 136822327863040 async_checkpointer.py:160] [process=3][thread=async_save] Background save thread done. Time taken: 17.452912s. I0422 08:25:20.103380 136823933495040 async_checkpointer.py:288] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save. I0422 08:25:20.103514 136823933495040 async_checkpointer.py:298] [process=3][thread=save_finalize] No errors found in background save thread=async_save. I0422 08:25:20.103567 136823933495040 checkpoint_manager.py:2137] [process=3][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0422 08:25:20.105040 136823933495040 checkpoint_manager.py:2146] [process=3][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0422 08:25:20.105147 136953331668800 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. W0422 08:25:20.105223 136953331668800 checkpoint_manager.py:1452] Waiting for previous save to complete took 15.658666 seconds. If this number is high, consider checkpointing less frequently. I0422 08:25:20.108247 136953331668800 checkpoint_manager.py:1512] [process=3] Saving checkpoint at step 5 I0422 08:25:20.110815 136953331668800 event_tracking.py:70] [process=3] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_15_ocdbt_false/checkpoints/5. I0422 08:25:20.398978 136953331668800 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0422 08:25:20.399067 136953331668800 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 I0422 08:25:20.439103 136953331668800 base_pytree_checkpoint_handler.py:154] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.041225s I0422 08:25:20.439267 136953331668800 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/blocking_gbytes_per_sec: 34.528 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04467606544494629 s) (per-host) I0422 08:25:20.439316 136953331668800 base_pytree_checkpoint_handler.py:768] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.044734s (batch_requests_ready=0.001781s, total_serialization_initiated=0.042889s, others=0.000064s) I0422 08:25:20.439404 136953331668800 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.049572s (all_items=0.000017s, per_item={'items': '0.00001669'}, temp_paths=0.049555) I0422 08:25:20.440160 136953331668800 event_tracking.py:125] [process=3] [async] Finished blocking save in 0.33 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_15_ocdbt_false/checkpoints/5. I0422 08:25:20.440459 136823933495040 async_checkpointer.py:76] [process=3][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 08:45:20.440426 I0422 08:25:20.448321 136953331668800 checkpoint_manager.py:1560] [process=3][thread=MainThread][step=5] Starting CheckpointManager Save Finalize thread=save_finalize I0422 08:25:20.448633 136823430969088 async_checkpointer.py:280] [process=3][thread=save_finalize] Waiting for background save thread=async_save. I0422 08:25:20.448800 136953331668800 standard_logger.py:34] {'step': 5, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_15_ocdbt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776846304.4465313, 'wait_for_prev_duration_secs': 15.658666133880615, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776846320.1082869, 'checkpointer_blocking_duration_secs': 0.3323397636413574, 'get_old_steps_start_time': 1776846320.44065, 'get_old_steps_duration_secs': 3.719329833984375e-05, 'checkpoint_manager_blocking_start_time': 1776846304.444206, 'checkpoint_manager_blocking_duration_secs': 16.004557371139526} I0422 08:25:20.448917 136953331668800 checkpointing.py:408] Started an asynchronous checkpoint save for step 5 I0422 08:25:20.449756 136953331668800 metric_logger.py:196] completed step: 4, seconds: 0.153, TFLOP/s/device: 88.871, Tokens/s/device: 13395.602, total_weights: 65536, loss: 9.460, lm_loss: 9.460, perplexity: 12840.355 I0422 08:25:20.455999 136953331668800 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.251, Tokens/s/device: 13905.014, total_weights: 65536, loss: 8.959, lm_loss: 8.959, perplexity: 7776.467 I0422 08:25:26.914072 136822840407808 array_metadata_store.py:203] [process=3][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_15_ocdbt_false/checkpoints/5/items/array_metadatas/process_3 I0422 08:25:31.926570 136823933495040 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/gbytes_per_sec: 136.976 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 11.531921148300171 s) (per-host) I0422 08:25:31.926697 136823933495040 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 11.486111s. I0422 08:25:37.899536 136823933495040 async_checkpointer.py:160] [process=3][thread=async_save] Background save thread done. Time taken: 17.458934s. I0422 08:25:37.899837 136823430969088 async_checkpointer.py:288] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save. I0422 08:25:37.899970 136823430969088 async_checkpointer.py:298] [process=3][thread=save_finalize] No errors found in background save thread=async_save. I0422 08:25:37.900019 136823430969088 checkpoint_manager.py:2137] [process=3][thread=save_finalize][step=5] CheckpointManager Save Finalize is syncing with other hosts... I0422 08:25:37.901397 136823430969088 checkpoint_manager.py:2146] [process=3][thread=save_finalize][step=5] CheckpointManager Save Finalize is done on all hosts. I0422 08:25:43.275292 136953331668800 metric_logger.py:196] completed step: 6, seconds: 16.301, TFLOP/s/device: 0.834, Tokens/s/device: 125.639, total_weights: 65536, loss: 8.469, lm_loss: 8.469, perplexity: 4762.740 I0422 08:25:43.422845 136953331668800 metric_logger.py:196] completed step: 7, seconds: 22.673, TFLOP/s/device: 0.599, Tokens/s/device: 90.326, total_weights: 65536, loss: 8.003, lm_loss: 8.003, perplexity: 2989.151 I0422 08:25:43.570162 136953331668800 metric_logger.py:196] completed step: 8, seconds: 0.152, TFLOP/s/device: 89.390, Tokens/s/device: 13473.861, total_weights: 65536, loss: 7.572, lm_loss: 7.572, perplexity: 1943.098 I0422 08:25:43.717012 136953331668800 checkpointing.py:772] Waiting for step 9 to finish before checkpoint... I0422 08:25:43.717698 136953331668800 checkpointing.py:776] Waited 0.0007061958312988281 seconds for step 9 to finish before starting checkpointing. I0422 08:25:43.719728 136953331668800 checkpoint_manager.py:2009] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0422 08:25:43.721373 136953331668800 checkpoint_manager.py:1512] [process=3] Saving checkpoint at step 9 I0422 08:25:43.722731 136953331668800 event_tracking.py:70] [process=3] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_15_ocdbt_false/checkpoints/9. I0422 08:25:44.036419 136953331668800 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0422 08:25:44.036510 136953331668800 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 I0422 08:25:44.077788 136953331668800 base_pytree_checkpoint_handler.py:154] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.042233s I0422 08:25:44.077971 136953331668800 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/blocking_gbytes_per_sec: 33.748 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04570889472961426 s) (per-host) I0422 08:25:44.078023 136953331668800 base_pytree_checkpoint_handler.py:768] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.045773s (batch_requests_ready=0.001651s, total_serialization_initiated=0.044053s, others=0.000069s) I0422 08:25:44.078109 136953331668800 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.050030s (all_items=0.000011s, per_item={'items': '0.00001097'}, temp_paths=0.050019) I0422 08:25:44.078766 136953331668800 event_tracking.py:125] [process=3] [async] Finished blocking save in 0.36 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_15_ocdbt_false/checkpoints/9. I0422 08:25:44.079099 136822840407808 async_checkpointer.py:76] [process=3][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 08:45:44.079060 I0422 08:25:44.081129 136953331668800 checkpoint_manager.py:1560] [process=3][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0422 08:25:44.081398 136823430969088 async_checkpointer.py:280] [process=3][thread=save_finalize] Waiting for background save thread=async_save. I0422 08:25:44.081532 136953331668800 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_15_ocdbt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776846343.7196977, 'wait_for_prev_duration_secs': 6.914138793945312e-05, 'time_between_consecutive_saves_sec': 5.818260431289673, 'checkpointer_blocking_start_time': 1776846343.7214103, 'checkpointer_blocking_duration_secs': 0.3578364849090576, 'get_old_steps_start_time': 1776846344.0792649, 'get_old_steps_duration_secs': 2.47955322265625e-05, 'checkpoint_manager_blocking_start_time': 1776846343.717942, 'checkpoint_manager_blocking_duration_secs': 0.3635599613189697} I0422 08:25:44.081691 136953331668800 checkpointing.py:408] Started an asynchronous checkpoint save for step 9 I0422 08:25:44.081738 136953331668800 checkpoint_manager.py:2020] [process=3][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0422 08:25:49.663063 136823422576384 array_metadata_store.py:203] [process=3][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_15_ocdbt_false/checkpoints/9/items/array_metadatas/process_3 I0422 08:25:55.004242 136822840407808 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/gbytes_per_sec: 143.967 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 10.97196364402771 s) (per-host) I0422 08:25:55.004353 136822840407808 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 10.925141s. I0422 08:26:01.127055 136822840407808 async_checkpointer.py:160] [process=3][thread=async_save] Background save thread done. Time taken: 17.047829s. I0422 08:26:01.127331 136823430969088 async_checkpointer.py:288] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save. I0422 08:26:01.127454 136823430969088 async_checkpointer.py:298] [process=3][thread=save_finalize] No errors found in background save thread=async_save. I0422 08:26:01.127496 136823430969088 checkpoint_manager.py:2137] [process=3][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0422 08:26:01.129061 136823430969088 checkpoint_manager.py:2146] [process=3][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0422 08:26:01.129234 136953331668800 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. I0422 08:26:01.129384 136953331668800 checkpoint_manager.py:2009] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0422 08:26:01.130364 136953331668800 metric_logger.py:196] completed step: 9, seconds: 0.147, TFLOP/s/device: 92.149, Tokens/s/device: 13889.737, total_weights: 65536, loss: 7.181, lm_loss: 7.181, perplexity: 1314.495 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops XPK End: Wed Apr 22 08:26:13 UTC 2026 EXIT_CODE=0
XPK Start: Wed Apr 22 13:50:36 UTC 2026 PyTorch was not found. Models won't be available and only tokenizers, configuration and file/data utilities can be used. 2026-04-22 13:51:00.357960: 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) I0422 13:51:00.895560 139670999004992 max_utils.py:273] Attempting to initialize the jax distributed system... I0422 13:51:09.937820 139670999004992 distributed.py:149] Starting JAX distributed service on [::]:8482 I0422 13:51:09.940287 139670999004992 distributed.py:172] Connecting to JAX distributed service on mt-15-ocdbt-false-sv-t5nwu-slice-job-0-0.mt-15-ocdbt-false-sv-t5nwu:8482 I0422 13:51:11.408788 139670999004992 max_utils.py:284] Jax distributed system initialized! I0422 13:51:16.476657 139670999004992 max_utils.py:800] System Information: Jax Version: 0.9.2 I0422 13:51:16.476765 139670999004992 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0422 13:51:16.476805 139670999004992 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 I0422 13:51:16.476840 139670999004992 train_utils.py:378] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0422 13:51:17.173920 139670999004992 maxtext_utils.py:1718] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0422 13:51:17.174511 139670999004992 maxtext_utils.py:1718] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0422 13:51:17.174693 139670999004992 checkpointing.py:688] Setting up checkpoint logger... I0422 13:51:17.174746 139670999004992 checkpointing.py:234] Creating checkpoint manager with ocdbt=False and zarr3=True I0422 13:51:17.174789 139670999004992 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0422 13:51:17.175130 139670999004992 base_pytree_checkpoint_handler.py:441] Created BasePyTreeCheckpointHandler: use_ocdbt=False, use_zarr3=True, pytree_metadata_options=PyTreeMetadataOptions(support_rich_types=False), array_metadata_store=<orbax.checkpoint._src.metadata.array_metadata_store.Store object at 0x7f0730f8d790>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0422 13:51:20.116569 139670999004992 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0422 13:51:20.116814 139670999004992 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 0x7ef3780e30b0>}, handler_registry=None I0422 13:51:20.117069 139670999004992 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7ef3780e30b0>` 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`. I0422 13:51:20.117119 139670999004992 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7ef2b86ad670>` 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`. I0422 13:51:20.117154 139670999004992 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 0x7ef3780e30b0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7ef3780e30b0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7ef2b86ad670>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7ef2b86ad670>}). I0422 13:51:20.117459 139670999004992 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0422 13:51:20.117527 139670999004992 async_checkpointer.py:192] [process=3][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7ef2b82e8180> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0422 13:51:21.286887 139670999004992 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/linen_xpk_feat_nnx_post_train_fixes_20260422_123906_15_ocdbt_false/checkpoints I0422 13:51:21.719663 139670999004992 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/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/linen_xpk_feat_nnx_post_train_fixes_20260422_123906_15_ocdbt_false/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7ef37813abd0> I0422 13:51:21.719838 139670999004992 checkpointing.py:302] Checkpoint manager created! I0422 13:51:22.653616 139670999004992 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0422 13:51:22.653717 139670999004992 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0422 13:51:23.033914 139670999004992 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0422 13:51:23.034015 139670999004992 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0422 13:51:23.050449 139670999004992 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0422 13:51:23.050507 139670999004992 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0422 13:51:23.074742 139670999004992 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0422 13:51:23.074814 139670999004992 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 13:51:23.091154 139670999004992 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0422 13:51:23.091214 139670999004992 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 13:51:23.107442 139670999004992 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0422 13:51:23.107500 139670999004992 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 13:51:23.132019 139670999004992 attentions.py:1197] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0422 13:51:23.132086 139670999004992 attentions.py:1197] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 13:51:23.152868 139670999004992 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0422 13:51:23.152946 139670999004992 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0422 13:51:23.367231 139670999004992 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0422 13:51:23.367337 139670999004992 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0422 13:51:24.803477 139670999004992 maxtext_utils.py:1827] params/params/decoder/decoder_norm/scale Shape: float32[2048] Logical: P('norm',) Physical: (None,) I0422 13:51:24.803617 139670999004992 maxtext_utils.py:1827] params/params/decoder/layers/mlp/wi_0/kernel Shape: float32[2048,16,7168] Logical: P('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0422 13:51:24.803704 139670999004992 maxtext_utils.py:1827] params/params/decoder/layers/mlp/wi_1/kernel Shape: float32[2048,16,7168] Logical: P('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0422 13:51:24.803804 139670999004992 maxtext_utils.py:1827] params/params/decoder/layers/mlp/wo/kernel Shape: float32[7168,16,2048] Logical: P('mlp', 'layers', 'embed') Physical: (None, None, 'fsdp') I0422 13:51:24.803879 139670999004992 maxtext_utils.py:1827] params/params/decoder/layers/post_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: P('norm', 'layers') Physical: (None, None) I0422 13:51:24.803963 139670999004992 maxtext_utils.py:1827] params/params/decoder/layers/pre_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: P('norm', 'layers') Physical: (None, None) I0422 13:51:24.804028 139670999004992 maxtext_utils.py:1827] params/params/decoder/layers/self_attention/key/kernel Shape: float32[2048,16,16,128] Logical: P('embed', 'layers', 'kv_heads', 'kv_head_dim') Physical: ('fsdp', None, None, None) I0422 13:51:24.804083 139670999004992 maxtext_utils.py:1827] params/params/decoder/layers/self_attention/out/kernel Shape: float32[16,16,128,2048] Logical: P('heads', 'layers', 'kv', 'embed') Physical: (None, None, None, 'fsdp') I0422 13:51:24.804124 139670999004992 maxtext_utils.py:1827] params/params/decoder/layers/self_attention/query/kernel Shape: float32[2048,16,16,128] Logical: P('embed', 'layers', 'q_heads', 'kv') Physical: ('fsdp', None, None, None) I0422 13:51:24.804162 139670999004992 maxtext_utils.py:1827] params/params/decoder/layers/self_attention/value/kernel Shape: float32[2048,16,16,128] Logical: P('embed', 'layers', 'kv_heads', 'kv_head_dim') Physical: ('fsdp', None, None, None) I0422 13:51:24.804208 139670999004992 maxtext_utils.py:1827] params/params/decoder/logits_dense/kernel Shape: float32[2048,32000] Logical: P('embed_vocab', 'vocab') Physical: ('fsdp', None) I0422 13:51:24.804256 139670999004992 maxtext_utils.py:1827] params/params/token_embedder/embedding Shape: float32[32000,2048] Logical: P('vocab', 'embed_vocab') Physical: (None, 'fsdp') I0422 13:51:25.300904 139670999004992 train.py:157] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0422 13:51:25.301013 139670999004992 train.py:157] train/xent Physical: float32[32,2048]............................................ ('fsdp', None). I0422 13:51:25.316374 139670999004992 train.py:164] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0422 13:51:25.316437 139670999004992 train.py:164] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None). I0422 13:51:36.579177 139670999004992 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. I0422 13:51:36.580021 139670999004992 metric_logger.py:301] number parameters: 1.104 billion I0422 13:51:47.941416 139670999004992 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0422 13:51:48.095583 139670999004992 checkpointing.py:798] Waited 0.1541450023651123 seconds for step 0 to finish before starting checkpointing. I0422 13:51:48.097835 139670999004992 checkpoint_manager.py:2009] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0422 13:51:48.099573 139670999004992 checkpoint_manager.py:1512] [process=3] Saving checkpoint at step 0 I0422 13:51:48.100947 139670999004992 event_tracking.py:70] [process=3] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/linen_xpk_feat_nnx_post_train_fixes_20260422_123906_15_ocdbt_false/checkpoints/0. I0422 13:51:48.445236 139670999004992 signaling_client.py:364] Using JaxDistributedSignalingClient I0422 13:51:48.446167 139670999004992 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0422 13:51:48.446223 139670999004992 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 I0422 13:51:48.717538 139670999004992 base_pytree_checkpoint_handler.py:154] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.272373s I0422 13:51:48.717712 139670999004992 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/blocking_gbytes_per_sec: 5.555 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2776951789855957 s) (per-host) I0422 13:51:48.717765 139670999004992 base_pytree_checkpoint_handler.py:768] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.277758s (batch_requests_ready=0.002143s, total_serialization_initiated=0.275544s, others=0.000071s) I0422 13:51:48.717859 139670999004992 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.281783s (all_items=0.000019s, per_item={'items': '0.00001860'}, temp_paths=0.281764) I0422 13:51:48.718677 139670999004992 event_tracking.py:125] [process=3] [async] Finished blocking save in 0.62 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/linen_xpk_feat_nnx_post_train_fixes_20260422_123906_15_ocdbt_false/checkpoints/0. I0422 13:51:48.719046 139545625761536 async_checkpointer.py:76] [process=3][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 14:11:48.719009 I0422 13:51:49.149964 139670999004992 checkpoint_manager.py:1560] [process=3][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0422 13:51:49.150343 139542921209600 async_checkpointer.py:280] [process=3][thread=save_finalize] Waiting for background save thread=async_save. I0422 13:51:49.150519 139670999004992 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/linen_xpk_feat_nnx_post_train_fixes_20260422_123906_15_ocdbt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776865908.0978177, 'wait_for_prev_duration_secs': 5.9604644775390625e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776865908.099611, 'checkpointer_blocking_duration_secs': 0.6196017265319824, 'get_old_steps_start_time': 1776865908.7192433, 'get_old_steps_duration_secs': 3.218650817871094e-05, 'checkpoint_manager_blocking_start_time': 1776865908.096047, 'checkpoint_manager_blocking_duration_secs': 1.0544252395629883} I0422 13:51:49.150629 139670999004992 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0422 13:51:49.150679 139670999004992 max_utils.py:750] Memstats: After params initialized: I0422 13:51:49.150735 139670999004992 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_10(process=3,(2,2,0,0)) I0422 13:51:49.150768 139670999004992 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_11(process=3,(3,2,0,0)) I0422 13:51:49.150794 139670999004992 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_14(process=3,(2,3,0,0)) I0422 13:51:49.150817 139670999004992 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_15(process=3,(3,3,0,0)) I0422 13:51:49.460693 139670999004992 metric_logger.py:196] completed step: 0, seconds: 11.361, TFLOP/s/device: 1.196, Tokens/s/device: 180.261, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875 I0422 13:51:49.656859 139670999004992 metric_logger.py:196] completed step: 1, seconds: 1.518, TFLOP/s/device: 8.952, Tokens/s/device: 1349.332, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875 I0422 13:51:50.104189 139670999004992 metric_logger.py:196] completed step: 2, seconds: 0.048, TFLOP/s/device: 280.159, Tokens/s/device: 42228.546, total_weights: 65536, loss: 10.560, lm_loss: 10.560, perplexity: 38547.719 I0422 13:51:50.251780 139670999004992 metric_logger.py:196] completed step: 3, seconds: 0.447, TFLOP/s/device: 30.371, Tokens/s/device: 4577.805, total_weights: 65536, loss: 9.980, lm_loss: 9.980, perplexity: 21590.506 I0422 13:51:50.256029 139670999004992 checkpointing.py:794] Waiting for step 5 to finish before checkpoint... I0422 13:51:50.545610 139670999004992 checkpointing.py:798] Waited 0.28954219818115234 seconds for step 5 to finish before starting checkpointing. I0422 13:51:50.548673 139670999004992 checkpoint_manager.py:2020] [process=3][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0422 13:51:51.662828 2758 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0422 13:51:53.732988 139544548464384 array_metadata_store.py:203] [process=3][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/linen_xpk_feat_nnx_post_train_fixes_20260422_123906_15_ocdbt_false/checkpoints/0/items/array_metadatas/process_3 I0422 13:51:59.175765 139545625761536 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/gbytes_per_sec: 147.135 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 10.735710144042969 s) (per-host) I0422 13:51:59.175892 139545625761536 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 10.456730s. I0422 13:52:05.425109 139545625761536 async_checkpointer.py:160] [process=3][thread=async_save] Background save thread done. Time taken: 16.705929s. I0422 13:52:05.425383 139542921209600 async_checkpointer.py:288] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save. I0422 13:52:05.425501 139542921209600 async_checkpointer.py:298] [process=3][thread=save_finalize] No errors found in background save thread=async_save. I0422 13:52:05.425562 139542921209600 checkpoint_manager.py:2137] [process=3][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0422 13:52:05.427180 139542921209600 checkpoint_manager.py:2146] [process=3][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0422 13:52:05.427409 139670999004992 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. W0422 13:52:05.427565 139670999004992 checkpoint_manager.py:1452] Waiting for previous save to complete took 14.878890 seconds. If this number is high, consider checkpointing less frequently. I0422 13:52:05.429387 139670999004992 checkpoint_manager.py:1512] [process=3] Saving checkpoint at step 5 I0422 13:52:05.431829 139670999004992 event_tracking.py:70] [process=3] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/linen_xpk_feat_nnx_post_train_fixes_20260422_123906_15_ocdbt_false/checkpoints/5. I0422 13:52:05.717778 139670999004992 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0422 13:52:05.717868 139670999004992 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 I0422 13:52:05.759873 139670999004992 base_pytree_checkpoint_handler.py:154] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.043222s I0422 13:52:05.760044 139670999004992 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/blocking_gbytes_per_sec: 33.141 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04654550552368164 s) (per-host) I0422 13:52:05.760096 139670999004992 base_pytree_checkpoint_handler.py:768] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.046606s (batch_requests_ready=0.001721s, total_serialization_initiated=0.044817s, others=0.000068s) I0422 13:52:05.760182 139670999004992 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.051575s (all_items=0.000016s, per_item={'items': '0.00001621'}, temp_paths=0.051558) I0422 13:52:05.760898 139670999004992 event_tracking.py:125] [process=3] [async] Finished blocking save in 0.33 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/linen_xpk_feat_nnx_post_train_fixes_20260422_123906_15_ocdbt_false/checkpoints/5. I0422 13:52:05.761187 139542921209600 async_checkpointer.py:76] [process=3][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 14:12:05.761164 I0422 13:52:05.763175 139670999004992 checkpoint_manager.py:1560] [process=3][thread=MainThread][step=5] Starting CheckpointManager Save Finalize thread=save_finalize I0422 13:52:05.763385 139538742695680 async_checkpointer.py:280] [process=3][thread=save_finalize] Waiting for background save thread=async_save. I0422 13:52:05.763504 139670999004992 standard_logger.py:34] {'step': 5, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/linen_xpk_feat_nnx_post_train_fixes_20260422_123906_15_ocdbt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776865910.5486424, 'wait_for_prev_duration_secs': 14.8788902759552, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776865925.429425, 'checkpointer_blocking_duration_secs': 0.3318641185760498, 'get_old_steps_start_time': 1776865925.7613118, 'get_old_steps_duration_secs': 3.0517578125e-05, 'checkpoint_manager_blocking_start_time': 1776865910.546252, 'checkpoint_manager_blocking_duration_secs': 15.21721887588501} I0422 13:52:05.763613 139670999004992 checkpointing.py:409] Started an asynchronous checkpoint save for step 5 I0422 13:52:05.764392 139670999004992 metric_logger.py:196] completed step: 4, seconds: 0.153, TFLOP/s/device: 88.531, Tokens/s/device: 13344.367, total_weights: 65536, loss: 9.460, lm_loss: 9.460, perplexity: 12840.355 I0422 13:52:05.770665 139670999004992 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.208, Tokens/s/device: 13898.597, total_weights: 65536, loss: 8.959, lm_loss: 8.959, perplexity: 7776.467 I0422 13:52:11.366707 139544548464384 array_metadata_store.py:203] [process=3][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/linen_xpk_feat_nnx_post_train_fixes_20260422_123906_15_ocdbt_false/checkpoints/5/items/array_metadatas/process_3 I0422 13:52:16.767140 139542921209600 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/gbytes_per_sec: 142.903 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 11.053611516952515 s) (per-host) I0422 13:52:16.767251 139542921209600 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 11.005987s. I0422 13:52:22.536182 139542921209600 async_checkpointer.py:160] [process=3][thread=async_save] Background save thread done. Time taken: 16.774900s. I0422 13:52:22.536390 139538742695680 async_checkpointer.py:288] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save. I0422 13:52:22.536447 139538742695680 async_checkpointer.py:298] [process=3][thread=save_finalize] No errors found in background save thread=async_save. I0422 13:52:22.536494 139538742695680 checkpoint_manager.py:2137] [process=3][thread=save_finalize][step=5] CheckpointManager Save Finalize is syncing with other hosts... I0422 13:52:22.537919 139538742695680 checkpoint_manager.py:2146] [process=3][thread=save_finalize][step=5] CheckpointManager Save Finalize is done on all hosts. I0422 13:52:28.480978 139670999004992 metric_logger.py:196] completed step: 6, seconds: 15.513, TFLOP/s/device: 0.876, Tokens/s/device: 132.017, total_weights: 65536, loss: 8.469, lm_loss: 8.469, perplexity: 4762.740 I0422 13:52:28.628319 139670999004992 metric_logger.py:196] completed step: 7, seconds: 22.564, TFLOP/s/device: 0.602, Tokens/s/device: 90.764, total_weights: 65536, loss: 8.003, lm_loss: 8.003, perplexity: 2989.151 I0422 13:52:28.775586 139670999004992 metric_logger.py:196] completed step: 8, seconds: 0.153, TFLOP/s/device: 88.933, Tokens/s/device: 13404.984, total_weights: 65536, loss: 7.572, lm_loss: 7.572, perplexity: 1943.098 I0422 13:52:28.922326 139670999004992 checkpointing.py:794] Waiting for step 9 to finish before checkpoint... I0422 13:52:28.923003 139670999004992 checkpointing.py:798] Waited 0.0006954669952392578 seconds for step 9 to finish before starting checkpointing. I0422 13:52:28.925092 139670999004992 checkpoint_manager.py:2009] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0422 13:52:28.926951 139670999004992 checkpoint_manager.py:1512] [process=3] Saving checkpoint at step 9 I0422 13:52:28.928306 139670999004992 event_tracking.py:70] [process=3] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/linen_xpk_feat_nnx_post_train_fixes_20260422_123906_15_ocdbt_false/checkpoints/9. I0422 13:52:29.231349 139670999004992 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0422 13:52:29.231442 139670999004992 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 I0422 13:52:29.271288 139670999004992 base_pytree_checkpoint_handler.py:154] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.040859s I0422 13:52:29.271456 139670999004992 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/blocking_gbytes_per_sec: 34.889 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.044213294982910156 s) (per-host) I0422 13:52:29.271508 139670999004992 base_pytree_checkpoint_handler.py:768] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.044282s (batch_requests_ready=0.001593s, total_serialization_initiated=0.042616s, others=0.000073s) I0422 13:52:29.271598 139670999004992 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.048481s (all_items=0.000010s, per_item={'items': '0.00001049'}, temp_paths=0.048470) I0422 13:52:29.272320 139670999004992 event_tracking.py:125] [process=3] [async] Finished blocking save in 0.35 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/linen_xpk_feat_nnx_post_train_fixes_20260422_123906_15_ocdbt_false/checkpoints/9. I0422 13:52:29.272635 139538742695680 async_checkpointer.py:76] [process=3][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 14:12:29.272599 I0422 13:52:29.274583 139670999004992 checkpoint_manager.py:1560] [process=3][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0422 13:52:29.274841 139544001419008 async_checkpointer.py:280] [process=3][thread=save_finalize] Waiting for background save thread=async_save. I0422 13:52:29.274988 139670999004992 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/linen_xpk_feat_nnx_post_train_fixes_20260422_123906_15_ocdbt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776865948.9250622, 'wait_for_prev_duration_secs': 7.033348083496094e-05, 'time_between_consecutive_saves_sec': 6.38708758354187, 'checkpointer_blocking_start_time': 1776865948.9270127, 'checkpointer_blocking_duration_secs': 0.3457603454589844, 'get_old_steps_start_time': 1776865949.2727914, 'get_old_steps_duration_secs': 2.5033950805664062e-05, 'checkpoint_manager_blocking_start_time': 1776865948.9232278, 'checkpoint_manager_blocking_duration_secs': 0.3517296314239502} I0422 13:52:29.275163 139670999004992 checkpointing.py:409] Started an asynchronous checkpoint save for step 9 I0422 13:52:29.275212 139670999004992 checkpoint_manager.py:2020] [process=3][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0422 13:52:34.385261 139544548464384 array_metadata_store.py:203] [process=3][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260422_123906/linen_xpk_feat_nnx_post_train_fixes_20260422_123906_15_ocdbt_false/checkpoints/9/items/array_metadatas/process_3 I0422 13:52:39.735268 139538742695680 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/gbytes_per_sec: 150.323 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 10.508000373840332 s) (per-host) I0422 13:52:39.735384 139538742695680 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 10.462641s. I0422 13:52:45.364043 139538742695680 async_checkpointer.py:160] [process=3][thread=async_save] Background save thread done. Time taken: 16.091284s. I0422 13:52:45.364321 139544001419008 async_checkpointer.py:288] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save. I0422 13:52:45.364435 139544001419008 async_checkpointer.py:298] [process=3][thread=save_finalize] No errors found in background save thread=async_save. I0422 13:52:45.364485 139544001419008 checkpoint_manager.py:2137] [process=3][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0422 13:52:45.366003 139544001419008 checkpoint_manager.py:2146] [process=3][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0422 13:52:45.366173 139670999004992 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. I0422 13:52:45.366317 139670999004992 checkpoint_manager.py:2009] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0422 13:52:45.367314 139670999004992 metric_logger.py:196] completed step: 9, seconds: 0.147, TFLOP/s/device: 92.301, Tokens/s/device: 13912.665, total_weights: 65536, loss: 7.181, lm_loss: 7.181, perplexity: 1314.495 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops XPK End: Wed Apr 22 13:52:56 UTC 2026 EXIT_CODE=0