main (b117f50cf) vs main (59e0f1759)XPK Start: Fri Apr 24 07:11:34 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 07:11:59.390322: 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 07:11:59.610493 139157606033216 max_utils.py:273] Attempting to initialize the jax distributed system... I0424 07:12:08.650213 139157606033216 distributed.py:149] Starting JAX distributed service on [::]:8482 I0424 07:12:08.652699 139157606033216 distributed.py:172] Connecting to JAX distributed service on mt-04-int8-uwur0-slice-job-0-0.mt-04-int8-uwur0:8482 I0424 07:12:09.437019 139157606033216 max_utils.py:284] Jax distributed system initialized! I0424 07:12:15.522265 139157606033216 max_utils.py:800] System Information: Jax Version: 0.9.2 I0424 07:12:15.522370 139157606033216 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0424 07:12:15.522411 139157606033216 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 07:12:15.522446 139157606033216 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0424 07:12:16.222576 139157606033216 maxtext_utils.py:1604] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0424 07:12:16.222993 139157606033216 checkpointing.py:677] Setting up checkpoint logger... I0424 07:12:16.223052 139157606033216 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True I0424 07:12:16.223096 139157606033216 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0424 07:12:16.223426 139157606033216 base_pytree_checkpoint_handler.py:441] Created BasePyTreeCheckpointHandler: use_ocdbt=True, use_zarr3=True, pytree_metadata_options=PyTreeMetadataOptions(support_rich_types=False), array_metadata_store=<orbax.checkpoint._src.metadata.array_metadata_store.Store object at 0x7e8fa0314350>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0424 07:12:19.157739 139157606033216 checkpointing.py:265] Enabling policy for fixed interval checkpointing. I0424 07:12:19.157978 139157606033216 checkpoint_manager.py:708] [process=5][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7e7b4436be90>}, handler_registry=None I0424 07:12:19.158254 139157606033216 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7e7b4436be90>` 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 07:12:19.158307 139157606033216 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7e7b44375d60>` 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 07:12:19.158344 139157606033216 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 0x7e7b4436be90>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7e7b4436be90>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7e7b44375d60>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7e7b44375d60>}). I0424 07:12:19.158664 139157606033216 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0424 07:12:19.158735 139157606033216 async_checkpointer.py:192] [process=5][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7e7a506818a0> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0424 07:12:20.109352 139157606033216 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_04_int8/checkpoints I0424 07:12:20.114812 139157606033216 checkpoint_manager.py:929] [process=5][thread=MainThread] CheckpointManager created, primary_host=0, CheckpointManagerOptions=CheckpointManagerOptions(save_interval_steps=1, max_to_keep=None, keep_time_interval=None, keep_period=None, should_keep_fn=None, best_fn=None, best_mode='max', keep_checkpoints_without_metrics=True, step_prefix=None, step_format_fixed_length=None, step_name_format=None, create=True, cleanup_tmp_directories=False, save_on_steps=frozenset(), single_host_load_and_broadcast=False, todelete_subdir=None, todelete_full_path=None, enable_background_delete=False, read_only=False, enable_async_checkpointing=True, async_options=None, multiprocessing_options=MultiprocessingOptions(primary_host=0, active_processes=None, barrier_sync_key_prefix=None), should_save_fn=None, file_options=FileOptions(path_permission_mode=None), save_root_metadata=True, temporary_path_class=None, save_decision_policy=FixedIntervalPolicy(interval=10), preservation_policy=LatestN(n=None), prevent_write_metrics=False, enable_should_save_is_saving_in_progress_check=True, enable_per_process_directory_creation=False, lightweight_initialize=False), root_directory=gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_04_int8/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7e7b44373a70> I0424 07:12:20.114935 139157606033216 checkpointing.py:301] Checkpoint manager created! I0424 07:12:21.263098 139157606033216 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0424 07:12:21.263217 139157606033216 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 07:12:21.645049 139157606033216 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0424 07:12:21.645145 139157606033216 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 07:12:21.661672 139157606033216 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0424 07:12:21.661735 139157606033216 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 07:12:21.728067 139157606033216 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 07:12:21.728154 139157606033216 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 07:12:21.744702 139157606033216 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 07:12:21.744765 139157606033216 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 07:12:21.761294 139157606033216 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 07:12:21.761355 139157606033216 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 07:12:21.786704 139157606033216 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0424 07:12:21.786770 139157606033216 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 07:12:21.852427 139157606033216 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0424 07:12:21.852518 139157606033216 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0424 07:12:22.360509 139157606033216 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint I0424 07:12:22.360623 139157606033216 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0424 07:12:24.830140 139157606033216 maxtext_utils.py:1707] params/params/decoder/decoder_norm/scale Shape: float32[2048] Logical: P('norm',) Physical: (None,) I0424 07:12:24.830272 139157606033216 maxtext_utils.py:1707] params/params/decoder/layers/mlp/wi_0/kernel Shape: float32[2048,16,7168] Logical: P('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0424 07:12:24.830325 139157606033216 maxtext_utils.py:1707] params/params/decoder/layers/mlp/wi_1/kernel Shape: float32[2048,16,7168] Logical: P('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0424 07:12:24.830383 139157606033216 maxtext_utils.py:1707] params/params/decoder/layers/mlp/wo/kernel Shape: float32[7168,16,2048] Logical: P('mlp', 'layers', 'embed') Physical: (None, None, 'fsdp') I0424 07:12:24.830435 139157606033216 maxtext_utils.py:1707] params/params/decoder/layers/post_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: P('norm', 'layers') Physical: (None, None) I0424 07:12:24.830474 139157606033216 maxtext_utils.py:1707] params/params/decoder/layers/pre_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: P('norm', 'layers') Physical: (None, None) I0424 07:12:24.830531 139157606033216 maxtext_utils.py:1707] 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 07:12:24.830586 139157606033216 maxtext_utils.py:1707] 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 07:12:24.830628 139157606033216 maxtext_utils.py:1707] 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 07:12:24.830687 139157606033216 maxtext_utils.py:1707] 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 07:12:24.830741 139157606033216 maxtext_utils.py:1707] params/params/decoder/logits_dense/kernel Shape: float32[2048,32000] Logical: P('embed_vocab', 'vocab') Physical: ('fsdp', None) I0424 07:12:24.830789 139157606033216 maxtext_utils.py:1707] params/params/token_embedder/embedding Shape: float32[32000,2048] Logical: P('vocab', 'embed_vocab') Physical: (None, 'fsdp') I0424 07:12:26.214032 139157606033216 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0424 07:12:26.214147 139157606033216 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None). I0424 07:12:26.229685 139157606033216 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0424 07:12:26.229744 139157606033216 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None). I0424 07:12:40.123329 139157606033216 max_utils.py:791] Total memory size: 1.8 GB, Output size: 0.4 GB, Temp size: 1.4 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB. I0424 07:12:40.124143 139157606033216 metric_logger.py:301] number parameters: 1.104 billion I0424 07:12:54.821469 139157606033216 checkpointing.py:772] Waiting for step 0 to finish before checkpoint... I0424 07:12:55.060811 139157606033216 checkpointing.py:776] Waited 0.23932433128356934 seconds for step 0 to finish before starting checkpointing. I0424 07:12:55.063256 139157606033216 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 07:12:55.065171 139157606033216 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 0 I0424 07:12:55.066665 139157606033216 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_04_int8/checkpoints/0. I0424 07:12:55.732296 139157606033216 signaling_client.py:364] Using JaxDistributedSignalingClient I0424 07:12:55.733244 139157606033216 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0424 07:12:55.733301 139157606033216 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 07:12:56.020544 139157606033216 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.288320s I0424 07:12:56.020728 139157606033216 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 5.251 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2937946319580078 s) (per-host) I0424 07:12:56.020783 139157606033216 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.293861s (batch_requests_ready=0.002258s, total_serialization_initiated=0.291528s, others=0.000074s) I0424 07:12:56.020880 139157606033216 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.298027s (all_items=0.000018s, per_item={'items': '0.00001764'}, temp_paths=0.298010) I0424 07:12:56.021755 139157606033216 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.96 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_04_int8/checkpoints/0. I0424 07:12:56.022096 139024241719040 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 07:32:56.022057 I0424 07:12:56.024055 139157606033216 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0424 07:12:56.024309 139022876858112 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0424 07:12:56.024439 139157606033216 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_04_int8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777014775.0632372, 'wait_for_prev_duration_secs': 6.127357482910156e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777014775.0652099, 'checkpointer_blocking_duration_secs': 0.957036018371582, 'get_old_steps_start_time': 1777014776.0222704, 'get_old_steps_duration_secs': 3.218650817871094e-05, 'checkpoint_manager_blocking_start_time': 1777014775.0613558, 'checkpoint_manager_blocking_duration_secs': 0.9630439281463623} I0424 07:12:56.024601 139157606033216 checkpointing.py:408] Started an asynchronous checkpoint save for step 0 I0424 07:12:56.024667 139157606033216 max_utils.py:750] Memstats: After params initialized: I0424 07:12:56.024724 139157606033216 max_utils.py:756] Using (GB) 0.44 / 31.25 (1.408000%) on TPU_18(process=5,(2,4,0,0)) I0424 07:12:56.024758 139157606033216 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_19(process=5,(3,4,0,0)) I0424 07:12:56.024786 139157606033216 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_22(process=5,(2,5,0,0)) I0424 07:12:56.024812 139157606033216 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_23(process=5,(3,5,0,0)) I0424 07:12:56.354707 139157606033216 metric_logger.py:196] completed step: 0, seconds: 14.697, TFLOP/s/device: 0.924, Tokens/s/device: 139.346, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52796.277 I0424 07:12:56.595214 139157606033216 metric_logger.py:196] completed step: 1, seconds: 1.532, TFLOP/s/device: 8.871, Tokens/s/device: 1337.077, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52796.277 I0424 07:12:57.004308 139157606033216 metric_logger.py:196] completed step: 2, seconds: 0.012, TFLOP/s/device: 1173.935, Tokens/s/device: 176948.332, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28634.820 I0424 07:12:57.233771 139157606033216 metric_logger.py:196] completed step: 3, seconds: 0.409, TFLOP/s/device: 33.182, Tokens/s/device: 5001.514, total_weights: 65536, loss: 9.731, lm_loss: 9.731, perplexity: 16827.199 I0424 07:12:57.692815 139157606033216 metric_logger.py:196] completed step: 4, seconds: 0.235, TFLOP/s/device: 57.883, Tokens/s/device: 8724.806, total_weights: 65536, loss: 9.272, lm_loss: 9.272, perplexity: 10638.531 I0424 07:12:57.698796 139157606033216 metric_logger.py:196] completed step: 5, seconds: 0.229, TFLOP/s/device: 59.250, Tokens/s/device: 8930.791, total_weights: 65536, loss: 8.887, lm_loss: 8.887, perplexity: 7233.941 I0424 07:12:58.959826 2924 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0424 07:13:01.475111 139022885250816 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_04_int8/checkpoints/0/items/array_metadatas/process_5 I0424 07:13:26.869181 139157606033216 metric_logger.py:196] completed step: 6, seconds: 0.460, TFLOP/s/device: 29.564, Tokens/s/device: 4456.136, total_weights: 65536, loss: 8.588, lm_loss: 8.588, perplexity: 5365.468 I0424 07:13:27.098499 139157606033216 metric_logger.py:196] completed step: 7, seconds: 28.942, TFLOP/s/device: 0.469, Tokens/s/device: 70.761, total_weights: 65536, loss: 8.380, lm_loss: 8.380, perplexity: 4358.779 I0424 07:13:27.328148 139157606033216 metric_logger.py:196] completed step: 8, seconds: 0.234, TFLOP/s/device: 58.172, Tokens/s/device: 8768.362, total_weights: 65536, loss: 8.251, lm_loss: 8.251, perplexity: 3831.453 I0424 07:13:27.556835 139157606033216 checkpointing.py:772] Waiting for step 9 to finish before checkpoint... I0424 07:13:27.557534 139157606033216 checkpointing.py:776] Waited 0.0007200241088867188 seconds for step 9 to finish before starting checkpointing. I0424 07:13:27.559574 139157606033216 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0424 07:13:28.872802 139024241719040 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 47.656 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 33.14583134651184 s) (per-host) I0424 07:13:28.872924 139024241719040 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 32.850717s. I0424 07:13:38.377211 139024241719040 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 42.354988s. I0424 07:13:38.377501 139022876858112 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0424 07:13:38.377619 139022876858112 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0424 07:13:38.377684 139022876858112 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0424 07:13:38.379979 139022876858112 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0424 07:13:38.380143 139157606033216 checkpoint_manager.py:2032] [process=5][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0. W0424 07:13:38.380276 139157606033216 checkpoint_manager.py:1452] Waiting for previous save to complete took 10.820704 seconds. If this number is high, consider checkpointing less frequently. I0424 07:13:38.382047 139157606033216 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 9 I0424 07:13:38.384174 139157606033216 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_04_int8/checkpoints/9. I0424 07:13:38.660115 139157606033216 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0424 07:13:38.660210 139157606033216 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 07:13:38.694504 139157606033216 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.036338s I0424 07:13:38.694683 139157606033216 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 38.732 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.03982710838317871 s) (per-host) I0424 07:13:38.694736 139157606033216 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.039891s (batch_requests_ready=0.001833s, total_serialization_initiated=0.037976s, others=0.000082s) I0424 07:13:38.694833 139157606033216 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.044264s (all_items=0.000015s, per_item={'items': '0.00001550'}, temp_paths=0.044249) I0424 07:13:38.695542 139157606033216 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.31 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_04_int8/checkpoints/9. I0424 07:13:38.695857 139022876858112 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 07:33:38.695825 I0424 07:13:38.697777 139157606033216 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0424 07:13:38.698029 139001709135616 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0424 07:13:38.698190 139157606033216 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_04_int8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777014807.5595417, 'wait_for_prev_duration_secs': 10.820703506469727, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777014818.3820853, 'checkpointer_blocking_duration_secs': 0.3139059543609619, 'get_old_steps_start_time': 1777014818.6960135, 'get_old_steps_duration_secs': 3.218650817871094e-05, 'checkpoint_manager_blocking_start_time': 1777014807.5577981, 'checkpoint_manager_blocking_duration_secs': 11.140357255935669} I0424 07:13:38.698305 139157606033216 checkpointing.py:408] Started an asynchronous checkpoint save for step 9 I0424 07:13:38.698352 139157606033216 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0424 07:13:44.237746 139001633601280 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_04_int8/checkpoints/9/items/array_metadatas/process_5 I0424 07:14:20.305140 139022876858112 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 37.925 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.65026116371155 s) (per-host) I0424 07:14:20.305252 139022876858112 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.609289s. I0424 07:14:29.628173 139022876858112 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 50.932192s. I0424 07:14:29.628504 139001709135616 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0424 07:14:29.628620 139001709135616 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0424 07:14:29.628693 139001709135616 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0424 07:14:29.629914 139001709135616 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0424 07:14:29.630142 139157606033216 checkpoint_manager.py:2032] [process=5][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9. I0424 07:14:29.630306 139157606033216 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 07:14:29.631201 139157606033216 metric_logger.py:196] completed step: 9, seconds: 0.229, TFLOP/s/device: 59.227, Tokens/s/device: 8927.326, total_weights: 65536, loss: 8.175, lm_loss: 8.175, perplexity: 3552.333 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops XPK End: Fri Apr 24 07:14:39 UTC 2026 EXIT_CODE=0
XPK Start: Sat Apr 25 07:21:16 UTC 2026 PyTorch was not found. Models won't be available and only tokenizers, configuration and file/data utilities can be used. `rope_parameters`'s factor field must be a float >= 1, got 40 `rope_parameters`'s beta_fast field must be a float, got 32 `rope_parameters`'s beta_slow field must be a float, got 1 DeepseekV32Config got `key=rope_scaling` in kwargs but hasn't set it as attribute. For RoPE standardization you need to set `self.rope_parameters` in model's config. 2026-04-25 07:21:41.869574: E external/local_xla/xla/stream_executor/cuda/cuda_platform.cc:51] failed call to cuInit: INTERNAL: CUDA error: Failed call to cuInit: UNKNOWN ERROR (303) I0425 07:21:42.079255 135965884618560 max_utils.py:273] Attempting to initialize the jax distributed system... I0425 07:21:51.119862 135965884618560 distributed.py:149] Starting JAX distributed service on [::]:8482 I0425 07:21:51.122118 135965884618560 distributed.py:172] Connecting to JAX distributed service on mt-04-int8-tfv0h-slice-job-0-0.mt-04-int8-tfv0h:8482 I0425 07:21:51.944138 135965884618560 max_utils.py:284] Jax distributed system initialized! I0425 07:21:57.985152 135965884618560 max_utils.py:800] System Information: Jax Version: 0.9.2 I0425 07:21:57.985256 135965884618560 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0425 07:21:57.985296 135965884618560 max_utils.py:802] System Information: Jax Backend: PJRT C API TFRT TPU v6 lite Built on Mar 4 2026 11:32:08 (1772652728) cl/878335365 I0425 07:21:57.985332 135965884618560 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0425 07:21:58.676079 135965884618560 maxtext_utils.py:1604] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0425 07:21:58.676470 135965884618560 checkpointing.py:677] Setting up checkpoint logger... I0425 07:21:58.676526 135965884618560 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True I0425 07:21:58.676569 135965884618560 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0425 07:21:58.676913 135965884618560 base_pytree_checkpoint_handler.py:441] Created BasePyTreeCheckpointHandler: use_ocdbt=True, use_zarr3=True, pytree_metadata_options=PyTreeMetadataOptions(support_rich_types=False), array_metadata_store=<orbax.checkpoint._src.metadata.array_metadata_store.Store object at 0x7ba871f1ede0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0425 07:22:01.486215 135965884618560 checkpointing.py:265] Enabling policy for fixed interval checkpointing. I0425 07:22:01.486443 135965884618560 checkpoint_manager.py:708] [process=5][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7ba74308a300>}, handler_registry=None I0425 07:22:01.486701 135965884618560 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7ba74308a300>` for item "items" and save args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>` to `_handler_registry`. I0425 07:22:01.486752 135965884618560 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7b946413c560>` for item "metrics" and save args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>` to `_handler_registry`. I0425 07:22:01.486789 135965884618560 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 0x7ba74308a300>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7ba74308a300>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7b946413c560>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7b946413c560>}). I0425 07:22:01.487118 135965884618560 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0425 07:22:01.487190 135965884618560 async_checkpointer.py:192] [process=5][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7b94445d1760> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0425 07:22:02.648800 135965884618560 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_04_int8/checkpoints I0425 07:22:02.688567 135965884618560 checkpoint_manager.py:929] [process=5][thread=MainThread] CheckpointManager created, primary_host=0, CheckpointManagerOptions=CheckpointManagerOptions(save_interval_steps=1, max_to_keep=None, keep_time_interval=None, keep_period=None, should_keep_fn=None, best_fn=None, best_mode='max', keep_checkpoints_without_metrics=True, step_prefix=None, step_format_fixed_length=None, step_name_format=None, create=True, cleanup_tmp_directories=False, save_on_steps=frozenset(), single_host_load_and_broadcast=False, todelete_subdir=None, todelete_full_path=None, enable_background_delete=False, read_only=False, enable_async_checkpointing=True, async_options=None, multiprocessing_options=MultiprocessingOptions(primary_host=0, active_processes=None, barrier_sync_key_prefix=None), should_save_fn=None, file_options=FileOptions(path_permission_mode=None), save_root_metadata=True, temporary_path_class=None, save_decision_policy=FixedIntervalPolicy(interval=10), preservation_policy=LatestN(n=None), prevent_write_metrics=False, enable_should_save_is_saving_in_progress_check=True, enable_per_process_directory_creation=False, lightweight_initialize=False), root_directory=gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_04_int8/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7b9464135a60> I0425 07:22:02.688736 135965884618560 checkpointing.py:301] Checkpoint manager created! I0425 07:22:03.830742 135965884618560 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0425 07:22:03.830857 135965884618560 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 07:22:04.218037 135965884618560 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0425 07:22:04.218132 135965884618560 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 07:22:04.234637 135965884618560 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0425 07:22:04.234702 135965884618560 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 07:22:04.300613 135965884618560 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0425 07:22:04.300716 135965884618560 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 07:22:04.317263 135965884618560 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0425 07:22:04.317322 135965884618560 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 07:22:04.333912 135965884618560 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0425 07:22:04.333976 135965884618560 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 07:22:04.358685 135965884618560 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0425 07:22:04.358756 135965884618560 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 07:22:04.424959 135965884618560 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0425 07:22:04.425045 135965884618560 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0425 07:22:04.932487 135965884618560 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint I0425 07:22:04.932595 135965884618560 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0425 07:22:07.426491 135965884618560 maxtext_utils.py:1707] params/params/decoder/decoder_norm/scale Shape: float32[2048] Logical: P('norm',) Physical: (None,) I0425 07:22:07.426615 135965884618560 maxtext_utils.py:1707] params/params/decoder/layers/mlp/wi_0/kernel Shape: float32[2048,16,7168] Logical: P('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0425 07:22:07.426681 135965884618560 maxtext_utils.py:1707] params/params/decoder/layers/mlp/wi_1/kernel Shape: float32[2048,16,7168] Logical: P('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0425 07:22:07.426740 135965884618560 maxtext_utils.py:1707] params/params/decoder/layers/mlp/wo/kernel Shape: float32[7168,16,2048] Logical: P('mlp', 'layers', 'embed') Physical: (None, None, 'fsdp') I0425 07:22:07.426794 135965884618560 maxtext_utils.py:1707] params/params/decoder/layers/post_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: P('norm', 'layers') Physical: (None, None) I0425 07:22:07.426833 135965884618560 maxtext_utils.py:1707] params/params/decoder/layers/pre_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: P('norm', 'layers') Physical: (None, None) I0425 07:22:07.426887 135965884618560 maxtext_utils.py:1707] 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) I0425 07:22:07.426943 135965884618560 maxtext_utils.py:1707] 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') I0425 07:22:07.426985 135965884618560 maxtext_utils.py:1707] 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) I0425 07:22:07.427020 135965884618560 maxtext_utils.py:1707] 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) I0425 07:22:07.427066 135965884618560 maxtext_utils.py:1707] params/params/decoder/logits_dense/kernel Shape: float32[2048,32000] Logical: P('embed_vocab', 'vocab') Physical: ('fsdp', None) I0425 07:22:07.427113 135965884618560 maxtext_utils.py:1707] params/params/token_embedder/embedding Shape: float32[32000,2048] Logical: P('vocab', 'embed_vocab') Physical: (None, 'fsdp') I0425 07:22:08.817587 135965884618560 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0425 07:22:08.817697 135965884618560 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None). I0425 07:22:08.834160 135965884618560 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0425 07:22:08.834223 135965884618560 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None). I0425 07:22:22.341513 135965884618560 max_utils.py:791] Total memory size: 1.8 GB, Output size: 0.4 GB, Temp size: 1.4 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB. I0425 07:22:22.342331 135965884618560 metric_logger.py:301] number parameters: 1.104 billion I0425 07:22:37.212856 135965884618560 checkpointing.py:772] Waiting for step 0 to finish before checkpoint... I0425 07:22:37.453130 135965884618560 checkpointing.py:776] Waited 0.2402477264404297 seconds for step 0 to finish before starting checkpointing. I0425 07:22:37.455894 135965884618560 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0425 07:22:37.459030 135965884618560 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 0 I0425 07:22:37.460455 135965884618560 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_04_int8/checkpoints/0. I0425 07:22:37.786480 135965884618560 signaling_client.py:364] Using JaxDistributedSignalingClient I0425 07:22:37.787490 135965884618560 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0425 07:22:37.787547 135965884618560 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False I0425 07:22:38.066318 135965884618560 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.279913s I0425 07:22:38.066492 135965884618560 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 5.406 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.28536128997802734 s) (per-host) I0425 07:22:38.066548 135965884618560 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.285427s (batch_requests_ready=0.002229s, total_serialization_initiated=0.283124s, others=0.000073s) I0425 07:22:38.066646 135965884618560 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.289515s (all_items=0.000019s, per_item={'items': '0.00001860'}, temp_paths=0.289496) I0425 07:22:38.067538 135965884618560 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.61 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_04_int8/checkpoints/0. I0425 07:22:38.067868 135833875052288 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 07:42:38.067830 I0425 07:22:38.078439 135965884618560 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0425 07:22:38.078732 135831321896704 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0425 07:22:38.078892 135965884618560 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_04_int8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777101757.455877, 'wait_for_prev_duration_secs': 6.031990051269531e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777101757.4590714, 'checkpointer_blocking_duration_secs': 0.6089563369750977, 'get_old_steps_start_time': 1777101758.0680528, 'get_old_steps_duration_secs': 3.2901763916015625e-05, 'checkpoint_manager_blocking_start_time': 1777101757.453697, 'checkpoint_manager_blocking_duration_secs': 0.6251547336578369} I0425 07:22:38.079006 135965884618560 checkpointing.py:408] Started an asynchronous checkpoint save for step 0 I0425 07:22:38.079055 135965884618560 max_utils.py:750] Memstats: After params initialized: I0425 07:22:38.079104 135965884618560 max_utils.py:756] Using (GB) 0.44 / 31.25 (1.408000%) on TPU_18(process=5,(2,4,0,0)) I0425 07:22:38.079138 135965884618560 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_19(process=5,(3,4,0,0)) I0425 07:22:38.079165 135965884618560 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_22(process=5,(2,5,0,0)) I0425 07:22:38.079191 135965884618560 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_23(process=5,(3,5,0,0)) I0425 07:22:38.393681 135965884618560 metric_logger.py:196] completed step: 0, seconds: 14.870, TFLOP/s/device: 0.914, Tokens/s/device: 137.723, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52796.277 I0425 07:22:38.664057 135965884618560 metric_logger.py:196] completed step: 1, seconds: 1.179, TFLOP/s/device: 11.522, Tokens/s/device: 1736.650, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52796.277 I0425 07:22:39.081716 135965884618560 metric_logger.py:196] completed step: 2, seconds: 0.042, TFLOP/s/device: 326.786, Tokens/s/device: 49256.819, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28634.820 I0425 07:22:39.311253 135965884618560 metric_logger.py:196] completed step: 3, seconds: 0.418, TFLOP/s/device: 32.511, Tokens/s/device: 4900.459, total_weights: 65536, loss: 9.731, lm_loss: 9.731, perplexity: 16827.199 I0425 07:22:39.775644 135965884618560 metric_logger.py:196] completed step: 4, seconds: 0.235, TFLOP/s/device: 57.867, Tokens/s/device: 8722.317, total_weights: 65536, loss: 9.272, lm_loss: 9.272, perplexity: 10638.531 I0425 07:22:39.781880 135965884618560 metric_logger.py:196] completed step: 5, seconds: 0.230, TFLOP/s/device: 59.183, Tokens/s/device: 8920.677, total_weights: 65536, loss: 8.887, lm_loss: 8.887, perplexity: 7233.941 I0425 07:22:41.303051 2925 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0425 07:22:43.365815 135832799807232 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_04_int8/checkpoints/0/items/array_metadatas/process_5 I0425 07:23:09.498006 135965884618560 metric_logger.py:196] completed step: 6, seconds: 0.465, TFLOP/s/device: 29.228, Tokens/s/device: 4405.628, total_weights: 65536, loss: 8.588, lm_loss: 8.588, perplexity: 5365.468 I0425 07:23:09.727385 135965884618560 metric_logger.py:196] completed step: 7, seconds: 29.488, TFLOP/s/device: 0.461, Tokens/s/device: 69.452, total_weights: 65536, loss: 8.380, lm_loss: 8.380, perplexity: 4358.779 I0425 07:23:09.956782 135965884618560 metric_logger.py:196] completed step: 8, seconds: 0.234, TFLOP/s/device: 58.054, Tokens/s/device: 8750.566, total_weights: 65536, loss: 8.251, lm_loss: 8.251, perplexity: 3831.453 I0425 07:23:10.185567 135965884618560 checkpointing.py:772] Waiting for step 9 to finish before checkpoint... I0425 07:23:10.186244 135965884618560 checkpointing.py:776] Waited 0.0006976127624511719 seconds for step 9 to finish before starting checkpointing. I0425 07:23:10.188390 135965884618560 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0425 07:23:11.670372 135833875052288 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 46.611 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 33.88920211791992 s) (per-host) I0425 07:23:11.670495 135833875052288 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 33.602513s. I0425 07:23:19.863918 135833875052288 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 41.795918s. I0425 07:23:19.864192 135831321896704 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0425 07:23:19.864320 135831321896704 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0425 07:23:19.864371 135831321896704 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0425 07:23:19.866041 135831321896704 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0425 07:23:19.866220 135965884618560 checkpoint_manager.py:2032] [process=5][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0. W0425 07:23:19.866360 135965884618560 checkpoint_manager.py:1452] Waiting for previous save to complete took 9.677972 seconds. If this number is high, consider checkpointing less frequently. I0425 07:23:19.868197 135965884618560 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 9 I0425 07:23:19.870316 135965884618560 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_04_int8/checkpoints/9. I0425 07:23:20.180980 135965884618560 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0425 07:23:20.181073 135965884618560 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False I0425 07:23:20.224014 135965884618560 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.044906s I0425 07:23:20.224178 135965884618560 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 31.903 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.048351287841796875 s) (per-host) I0425 07:23:20.224235 135965884618560 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.048417s (batch_requests_ready=0.001795s, total_serialization_initiated=0.046549s, others=0.000073s) I0425 07:23:20.224331 135965884618560 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.053346s (all_items=0.000016s, per_item={'items': '0.00001597'}, temp_paths=0.053330) I0425 07:23:20.225048 135965884618560 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.36 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_04_int8/checkpoints/9. I0425 07:23:20.225403 135831321896704 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 07:43:20.225366 I0425 07:23:20.227372 135965884618560 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0425 07:23:20.227627 135833340327680 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0425 07:23:20.227800 135965884618560 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_04_int8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777101790.188358, 'wait_for_prev_duration_secs': 9.677971601486206, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777101799.8682365, 'checkpointer_blocking_duration_secs': 0.35731029510498047, 'get_old_steps_start_time': 1777101800.2255714, 'get_old_steps_duration_secs': 2.9802322387695312e-05, 'checkpoint_manager_blocking_start_time': 1777101790.186482, 'checkpoint_manager_blocking_duration_secs': 10.041281700134277} I0425 07:23:20.227904 135965884618560 checkpointing.py:408] Started an asynchronous checkpoint save for step 9 I0425 07:23:20.227949 135965884618560 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0425 07:23:25.333943 135833859925760 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_04_int8/checkpoints/9/items/array_metadatas/process_5 I0425 07:24:02.656580 135831321896704 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 37.184 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.48072957992554 s) (per-host) I0425 07:24:02.656706 135831321896704 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.431186s. I0425 07:24:10.118889 135831321896704 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 49.893354s. I0425 07:24:10.119287 135833340327680 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0425 07:24:10.119402 135833340327680 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0425 07:24:10.119449 135833340327680 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0425 07:24:10.120985 135833340327680 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0425 07:24:10.121161 135965884618560 checkpoint_manager.py:2032] [process=5][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9. I0425 07:24:10.121315 135965884618560 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0425 07:24:10.122251 135965884618560 metric_logger.py:196] completed step: 9, seconds: 0.229, TFLOP/s/device: 59.249, Tokens/s/device: 8930.674, total_weights: 65536, loss: 8.175, lm_loss: 8.175, perplexity: 3552.333 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops XPK End: Sat Apr 25 07:24:26 UTC 2026 EXIT_CODE=0