XPK Start: Fri Apr 24 13:10:15 UTC 2026 PyTorch was not found. Models won't be available and only tokenizers, configuration and file/data utilities can be used. `rope_parameters`'s factor field must be a float >= 1, got 40 `rope_parameters`'s beta_fast field must be a float, got 32 `rope_parameters`'s beta_slow field must be a float, got 1 DeepseekV32Config got `key=rope_scaling` in kwargs but hasn't set it as attribute. For RoPE standardization you need to set `self.rope_parameters` in model's config. 2026-04-24 13:10:40.387680: E external/local_xla/xla/stream_executor/cuda/cuda_platform.cc:51] failed call to cuInit: INTERNAL: CUDA error: Failed call to cuInit: UNKNOWN ERROR (303) I0424 13:10:40.602648 139137389700928 max_utils.py:273] Attempting to initialize the jax distributed system... I0424 13:10:49.644903 139137389700928 distributed.py:149] Starting JAX distributed service on [::]:8482 I0424 13:10:49.647290 139137389700928 distributed.py:172] Connecting to JAX distributed service on mt-15-ocdbt-false-rs-o3ttc-slice-job-0-0.mt-15-ocdbt-false-rs-o3ttc:8482 I0424 13:10:50.773538 139137389700928 max_utils.py:284] Jax distributed system initialized! I0424 13:10:56.838698 139137389700928 max_utils.py:800] System Information: Jax Version: 0.9.2 I0424 13:10:56.838801 139137389700928 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0424 13:10:56.838842 139137389700928 max_utils.py:802] System Information: Jax Backend: PJRT C API TFRT TPU v6 lite Built on Mar 4 2026 11:32:08 (1772652728) cl/878335365 I0424 13:10:56.838878 139137389700928 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0424 13:10:57.539060 139137389700928 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0424 13:10:57.539678 139137389700928 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0424 13:10:57.539856 139137389700928 checkpointing.py:688] Setting up checkpoint logger... I0424 13:10:57.539906 139137389700928 checkpointing.py:234] Creating checkpoint manager with ocdbt=False and zarr3=True I0424 13:10:57.539949 139137389700928 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0424 13:10:57.540302 139137389700928 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 0x7e8abb2340e0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0424 13:10:58.785435 139137389700928 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0424 13:10:58.785671 139137389700928 checkpoint_manager.py:708] [process=6][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7e76bc192bd0>}, handler_registry=None I0424 13:10:58.785910 139137389700928 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7e76bc192bd0>` for item "items" and save args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>` to `_handler_registry`. I0424 13:10:58.785959 139137389700928 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7e76bc1949b0>` for item "metrics" and save args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>` to `_handler_registry`. I0424 13:10:58.785994 139137389700928 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 0x7e76bc192bd0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7e76bc192bd0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7e76bc1949b0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7e76bc1949b0>}). I0424 13:10:58.786334 139137389700928 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0424 13:10:58.786407 139137389700928 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7e76a426dd00> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0424 13:11:00.676629 139016859010816 checkpoint.py:228] Read Metadata={'item_handlers': {'items': 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler'}, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1777036083410759559, 'commit_timestamp_nsecs': 1777036097137632492, 'custom_metadata': {}} from gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_15_ocdbt_false/checkpoints/0/_CHECKPOINT_METADATA I0424 13:11:00.929808 139016842225408 checkpoint_manager.py:1871] Missing metrics for step 9 I0424 13:11:00.966026 139137389700928 checkpoint_manager.py:1812] Found 3 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_15_ocdbt_false/checkpoints I0424 13:11:01.281048 139137389700928 checkpoint_manager.py:929] [process=6][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_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_15_ocdbt_false/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7e76bc196b70> I0424 13:11:01.281267 139137389700928 checkpointing.py:302] Checkpoint manager created! I0424 13:11:02.218820 139137389700928 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0424 13:11:02.218932 139137389700928 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 13:11:02.599216 139137389700928 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch_attn', 'activation_length_attn', 'activation_embed_attn'). I0424 13:11:02.599312 139137389700928 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 13:11:02.615623 139137389700928 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch_attn', 'activation_length_attn', 'activation_embed_attn'). I0424 13:11:02.615681 139137389700928 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 13:11:02.639339 139137389700928 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 13:11:02.639405 139137389700928 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 13:11:02.655822 139137389700928 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 13:11:02.655881 139137389700928 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 13:11:02.672238 139137389700928 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 13:11:02.672298 139137389700928 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 13:11:02.696962 139137389700928 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch_attn', 'activation_length_attn', 'activation_heads', 'activation_kv'). I0424 13:11:02.697040 139137389700928 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 13:11:02.717885 139137389700928 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0424 13:11:02.717949 139137389700928 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0424 13:11:02.937194 139137389700928 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0424 13:11:02.937310 139137389700928 checkpointing.py:582] restoring from this run's directory step 9 I0424 13:11:03.193832 139137389700928 event_tracking.py:70] [process=6] [sync] Started load checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_15_ocdbt_false/checkpoints/9. I0424 13:11:03.433058 139137389700928 checkpointer.py:307] Restoring checkpoint from gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_15_ocdbt_false/checkpoints/9. I0424 13:11:03.433524 139137389700928 event_tracking.py:125] [process=6] [sync] Finished blocking load in 0.24 seconds. Continuing load @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_15_ocdbt_false/checkpoints/9. I0424 13:11:05.956993 1479 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0424 13:11:14.452184 139137389700928 jax_array_handlers.py:843] [process=6] /jax/orbax/read/worker/io/requested throughput: 167.400 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 9.44010305404663 s) (per-host) I0424 13:11:14.459305 139137389700928 base_pytree_checkpoint_handler.py:130] [process=6] /jax/checkpoint/read/gbytes_per_sec: 160.685 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 9.849040031433105 s) (per-host) I0424 13:11:15.341237 139137389700928 event_tracking.py:138] [process=6] [sync] Finished load in 12.15 seconds @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_15_ocdbt_false/checkpoints/9 I0424 13:11:15.341408 139137389700928 standard_logger.py:34] {'step': 9, 'event_type': 'restore', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_15_ocdbt_false/checkpoints', 'checkpointer_start_time': 1777036263.1937337, 'checkpointer_duration_secs': 12.147641658782959, 'checkpoint_manager_start_time': 1777036262.9376237, 'checkpoint_manager_duration_secs': 12.403753757476807} fsdp: 32 I0424 13:11:15.757889 139137389700928 maxtext_utils.py:1880] params/params/decoder/decoder_norm/scale Shape: float32[2048] Logical: P('norm',) Physical: (None,) I0424 13:11:15.758023 139137389700928 maxtext_utils.py:1880] params/params/decoder/layers/mlp/wi_0/kernel Shape: float32[2048,16,7168] Logical: P('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0424 13:11:15.758079 139137389700928 maxtext_utils.py:1880] params/params/decoder/layers/mlp/wi_1/kernel Shape: float32[2048,16,7168] Logical: P('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0424 13:11:15.758230 139137389700928 maxtext_utils.py:1880] params/params/decoder/layers/mlp/wo/kernel Shape: float32[7168,16,2048] Logical: P('mlp', 'layers', 'embed') Physical: (None, None, 'fsdp') I0424 13:11:15.758291 139137389700928 maxtext_utils.py:1880] params/params/decoder/layers/post_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: P('norm', 'layers') Physical: (None, None) I0424 13:11:15.758331 139137389700928 maxtext_utils.py:1880] params/params/decoder/layers/pre_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: P('norm', 'layers') Physical: (None, None) I0424 13:11:15.758383 139137389700928 maxtext_utils.py:1880] 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) I0424 13:11:15.758437 139137389700928 maxtext_utils.py:1880] 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') I0424 13:11:15.758476 139137389700928 maxtext_utils.py:1880] 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) I0424 13:11:15.758516 139137389700928 maxtext_utils.py:1880] 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) I0424 13:11:15.758563 139137389700928 maxtext_utils.py:1880] params/params/decoder/logits_dense/kernel Shape: float32[2048,32000] Logical: P('embed_vocab', 'vocab') Physical: ('fsdp', None) I0424 13:11:15.758610 139137389700928 maxtext_utils.py:1880] params/params/token_embedder/embedding Shape: float32[32000,2048] Logical: P('vocab', 'embed_vocab') Physical: (None, 'fsdp') I0424 13:11:16.249057 139137389700928 train.py:157] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0424 13:11:16.249184 139137389700928 train.py:157] train/xent Physical: float32[32,2048]............................................ ('fsdp', None). I0424 13:11:16.264671 139137389700928 train.py:164] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0424 13:11:16.264737 139137389700928 train.py:164] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None). I0424 13:11:27.145994 139137389700928 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. I0424 13:11:27.146858 139137389700928 metric_logger.py:301] number parameters: 1.104 billion I0424 13:11:38.592472 139137389700928 checkpointing.py:794] Waiting for step 10 to finish before checkpoint... I0424 13:11:39.217577 139137389700928 checkpointing.py:798] Waited 0.6250855922698975 seconds for step 10 to finish before starting checkpointing. I0424 13:11:39.219958 139137389700928 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 13:11:39.221894 139137389700928 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 10 I0424 13:11:39.223515 139137389700928 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_15_ocdbt_false/checkpoints/10. I0424 13:11:39.557771 139137389700928 signaling_client.py:364] Using JaxDistributedSignalingClient I0424 13:11:39.558812 139137389700928 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0424 13:11:39.558869 139137389700928 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False I0424 13:11:39.835191 139137389700928 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.277495s I0424 13:11:39.835374 139137389700928 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.481 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2814197540283203 s) (per-host) I0424 13:11:39.835437 139137389700928 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.281494s (batch_requests_ready=0.002242s, total_serialization_initiated=0.279168s, others=0.000084s) I0424 13:11:39.835555 139137389700928 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.285791s (all_items=0.000016s, per_item={'items': '0.00001597'}, temp_paths=0.285775) I0424 13:11:39.836270 139137389700928 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.61 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_15_ocdbt_false/checkpoints/10. I0424 13:11:39.836597 139014082369280 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 13:31:39.836559 I0424 13:11:39.860233 139137389700928 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=10] Starting CheckpointManager Save Finalize thread=save_finalize I0424 13:11:39.860553 139011950122752 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0424 13:11:39.860710 139137389700928 standard_logger.py:34] {'step': 10, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_15_ocdbt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777036299.2199407, 'wait_for_prev_duration_secs': 6.127357482910156e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777036299.221932, 'checkpointer_blocking_duration_secs': 0.6148209571838379, 'get_old_steps_start_time': 1777036299.8367765, 'get_old_steps_duration_secs': 3.266334533691406e-05, 'checkpoint_manager_blocking_start_time': 1777036299.2180912, 'checkpoint_manager_blocking_duration_secs': 0.6425807476043701} I0424 13:11:39.860814 139137389700928 checkpointing.py:409] Started an asynchronous checkpoint save for step 10 I0424 13:11:39.860863 139137389700928 max_utils.py:750] Memstats: After params initialized: I0424 13:11:39.860913 139137389700928 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_24(process=6,(0,6,0,0)) I0424 13:11:39.860945 139137389700928 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_25(process=6,(1,6,0,0)) I0424 13:11:39.860970 139137389700928 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_28(process=6,(0,7,0,0)) I0424 13:11:39.860995 139137389700928 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_29(process=6,(1,7,0,0)) I0424 13:11:40.173697 139137389700928 metric_logger.py:196] completed step: 10, seconds: 11.445, TFLOP/s/device: 1.187, Tokens/s/device: 178.935, total_weights: 65536, loss: 6.833, lm_loss: 6.833, perplexity: 927.869 I0424 13:11:40.354285 139137389700928 metric_logger.py:196] completed step: 11, seconds: 1.580, TFLOP/s/device: 8.601, Tokens/s/device: 1296.412, total_weights: 65536, loss: 6.527, lm_loss: 6.527, perplexity: 683.659 I0424 13:11:40.501876 139137389700928 metric_logger.py:196] completed step: 12, seconds: 0.033, TFLOP/s/device: 411.121, Tokens/s/device: 61968.592, total_weights: 65536, loss: 6.265, lm_loss: 6.265, perplexity: 526.068 I0424 13:11:40.649164 139137389700928 metric_logger.py:196] completed step: 13, seconds: 0.153, TFLOP/s/device: 88.520, Tokens/s/device: 13342.628, total_weights: 65536, loss: 6.045, lm_loss: 6.045, perplexity: 422.001 I0424 13:11:40.653720 139137389700928 checkpointing.py:794] Waiting for step 15 to finish before checkpoint... I0424 13:11:40.943287 139137389700928 checkpointing.py:798] Waited 0.28953051567077637 seconds for step 15 to finish before starting checkpointing. I0424 13:11:40.946316 139137389700928 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=10][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0424 13:11:44.937679 139011958515456 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_15_ocdbt_false/checkpoints/10/items/array_metadatas/process_6 I0424 13:11:50.362462 139014082369280 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 146.144 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 10.808475971221924 s) (per-host) I0424 13:11:50.362585 139014082369280 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 10.525876s. I0424 13:11:55.934120 139014082369280 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 16.097384s. I0424 13:11:55.934425 139011950122752 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0424 13:11:55.934637 139011950122752 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0424 13:11:55.934700 139011950122752 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=10] CheckpointManager Save Finalize is syncing with other hosts... I0424 13:11:55.936296 139011950122752 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=10] CheckpointManager Save Finalize is done on all hosts. I0424 13:11:55.936480 139137389700928 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=10][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=10. W0424 13:11:55.936639 139137389700928 checkpoint_manager.py:1452] Waiting for previous save to complete took 14.990317 seconds. If this number is high, consider checkpointing less frequently. I0424 13:11:55.938951 139137389700928 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 15 I0424 13:11:55.941968 139137389700928 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_15_ocdbt_false/checkpoints/15. I0424 13:11:56.232618 139137389700928 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0424 13:11:56.232712 139137389700928 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False I0424 13:11:56.259264 139137389700928 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.027729s I0424 13:11:56.259409 139137389700928 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 49.400 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.031226396560668945 s) (per-host) I0424 13:11:56.259472 139137389700928 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.031293s (batch_requests_ready=0.001860s, total_serialization_initiated=0.029359s, others=0.000075s) I0424 13:11:56.259575 139137389700928 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.036449s (all_items=0.000014s, per_item={'items': '0.00001407'}, temp_paths=0.036435) I0424 13:11:56.260326 139137389700928 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.32 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_15_ocdbt_false/checkpoints/15. I0424 13:11:56.260645 139011950122752 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 13:31:56.260607 I0424 13:11:56.271487 139137389700928 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=15] Starting CheckpointManager Save Finalize thread=save_finalize I0424 13:11:56.271742 139008738838272 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0424 13:11:56.271873 139137389700928 standard_logger.py:34] {'step': 15, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_15_ocdbt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777036300.9462855, 'wait_for_prev_duration_secs': 14.99031686782837, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777036315.9389985, 'checkpointer_blocking_duration_secs': 0.32178831100463867, 'get_old_steps_start_time': 1777036316.2608109, 'get_old_steps_duration_secs': 3.123283386230469e-05, 'checkpoint_manager_blocking_start_time': 1777036300.943925, 'checkpoint_manager_blocking_duration_secs': 15.327913761138916} I0424 13:11:56.271979 139137389700928 checkpointing.py:409] Started an asynchronous checkpoint save for step 15 I0424 13:11:56.272782 139137389700928 metric_logger.py:196] completed step: 14, seconds: 0.147, TFLOP/s/device: 92.124, Tokens/s/device: 13885.970, total_weights: 65536, loss: 5.864, lm_loss: 5.864, perplexity: 352.193 I0424 13:11:56.278801 139137389700928 metric_logger.py:196] completed step: 15, seconds: 0.147, TFLOP/s/device: 92.196, Tokens/s/device: 13896.711, total_weights: 65536, loss: 5.719, lm_loss: 5.719, perplexity: 304.661 I0424 13:12:01.338240 139011958515456 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_15_ocdbt_false/checkpoints/15/items/array_metadatas/process_6 I0424 13:12:06.543761 139011950122752 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 153.128 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 10.315537214279175 s) (per-host) I0424 13:12:06.543883 139011950122752 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 10.283125s. I0424 13:12:11.412392 139011950122752 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 15.151618s. I0424 13:12:11.412636 139008738838272 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0424 13:12:11.412692 139008738838272 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0424 13:12:11.412737 139008738838272 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=15] CheckpointManager Save Finalize is syncing with other hosts... I0424 13:12:11.414481 139008738838272 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=15] CheckpointManager Save Finalize is done on all hosts. I0424 13:12:17.459157 139137389700928 metric_logger.py:196] completed step: 16, seconds: 15.624, TFLOP/s/device: 0.870, Tokens/s/device: 131.084, total_weights: 65536, loss: 5.605, lm_loss: 5.605, perplexity: 271.872 I0424 13:12:17.606882 139137389700928 metric_logger.py:196] completed step: 17, seconds: 21.034, TFLOP/s/device: 0.646, Tokens/s/device: 97.365, total_weights: 65536, loss: 5.517, lm_loss: 5.517, perplexity: 248.975 I0424 13:12:17.754215 139137389700928 metric_logger.py:196] completed step: 18, seconds: 0.152, TFLOP/s/device: 89.228, Tokens/s/device: 13449.352, total_weights: 65536, loss: 5.448, lm_loss: 5.448, perplexity: 232.333 I0424 13:12:17.900830 139137389700928 checkpointing.py:794] Waiting for step 19 to finish before checkpoint... I0424 13:12:17.901407 139137389700928 checkpointing.py:798] Waited 0.0005977153778076172 seconds for step 19 to finish before starting checkpointing. I0424 13:12:17.903644 139137389700928 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 13:12:17.905474 139137389700928 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 19 I0424 13:12:17.906773 139137389700928 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_15_ocdbt_false/checkpoints/19. I0424 13:12:18.245323 139137389700928 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0424 13:12:18.245413 139137389700928 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False I0424 13:12:18.271873 139137389700928 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.027371s I0424 13:12:18.272042 139137389700928 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 49.865 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.030935049057006836 s) (per-host) I0424 13:12:18.272091 139137389700928 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.030993s (batch_requests_ready=0.001767s, total_serialization_initiated=0.029164s, others=0.000062s) I0424 13:12:18.272202 139137389700928 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.035195s (all_items=0.000011s, per_item={'items': '0.00001097'}, temp_paths=0.035184) I0424 13:12:18.272790 139137389700928 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.37 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_15_ocdbt_false/checkpoints/19. I0424 13:12:18.273074 139008185181952 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 13:32:18.273036 I0424 13:12:18.276904 139137389700928 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=19] Starting CheckpointManager Save Finalize thread=save_finalize I0424 13:12:18.277197 139008738838272 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0424 13:12:18.277359 139137389700928 standard_logger.py:34] {'step': 19, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_15_ocdbt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777036337.9036138, 'wait_for_prev_duration_secs': 7.414817810058594e-05, 'time_between_consecutive_saves_sec': 6.48909330368042, 'checkpointer_blocking_start_time': 1777036337.905514, 'checkpointer_blocking_duration_secs': 0.36771678924560547, 'get_old_steps_start_time': 1777036338.273246, 'get_old_steps_duration_secs': 2.2649765014648438e-05, 'checkpoint_manager_blocking_start_time': 1777036337.9016485, 'checkpoint_manager_blocking_duration_secs': 0.37567901611328125} I0424 13:12:18.277464 139137389700928 checkpointing.py:409] Started an asynchronous checkpoint save for step 19 I0424 13:12:18.277511 139137389700928 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=19][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0424 13:12:23.478489 139011958515456 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260424_120657/linen_xpk_feat_nnx_post_train_fixes_20260424_120657_15_ocdbt_false/checkpoints/19/items/array_metadatas/process_6 I0424 13:12:28.514939 139008185181952 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 153.750 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 10.27379298210144 s) (per-host) I0424 13:12:28.515062 139008185181952 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 10.241863s. I0424 13:12:33.561765 139008185181952 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 15.288548s. I0424 13:12:33.562041 139008738838272 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0424 13:12:33.562189 139008738838272 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0424 13:12:33.562231 139008738838272 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=19] CheckpointManager Save Finalize is syncing with other hosts... I0424 13:12:33.563619 139008738838272 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=19] CheckpointManager Save Finalize is done on all hosts. I0424 13:12:33.563797 139137389700928 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=19][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=19. I0424 13:12:33.563945 139137389700928 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 13:12:33.565060 139137389700928 metric_logger.py:196] completed step: 19, seconds: 0.148, TFLOP/s/device: 92.018, Tokens/s/device: 13869.982, total_weights: 65536, loss: 5.391, lm_loss: 5.391, perplexity: 219.349 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops XPK End: Fri Apr 24 13:12:45 UTC 2026 EXIT_CODE=0