XPK Start: Wed Apr 22 21:38:40 UTC 2026 PyTorch was not found. Models won't be available and only tokenizers, configuration and file/data utilities can be used. `rope_parameters`'s factor field must be a float >= 1, got 40 `rope_parameters`'s beta_fast field must be a float, got 32 `rope_parameters`'s beta_slow field must be a float, got 1 DeepseekV32Config got `key=rope_scaling` in kwargs but hasn't set it as attribute. For RoPE standardization you need to set `self.rope_parameters` in model's config. 2026-04-22 21:39:05.330680: E external/local_xla/xla/stream_executor/cuda/cuda_platform.cc:51] failed call to cuInit: INTERNAL: CUDA error: Failed call to cuInit: UNKNOWN ERROR (303) I0422 21:39:05.540894 138957515740992 max_utils.py:273] Attempting to initialize the jax distributed system... I0422 21:39:14.581381 138957515740992 distributed.py:149] Starting JAX distributed service on [::]:8482 I0422 21:39:14.583801 138957515740992 distributed.py:172] Connecting to JAX distributed service on mt-05-fp8-chefp-slice-job-0-0.mt-05-fp8-chefp:8482 I0422 21:39:16.376136 138957515740992 max_utils.py:284] Jax distributed system initialized! I0422 21:39:22.355074 138957515740992 max_utils.py:800] System Information: Jax Version: 0.9.2 I0422 21:39:22.355179 138957515740992 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0422 21:39:22.355221 138957515740992 max_utils.py:802] System Information: Jax Backend: PJRT C API TFRT TPU v6 lite Built on Mar 4 2026 11:32:08 (1772652728) cl/878335365 I0422 21:39:22.355256 138957515740992 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0422 21:39:23.098489 138957515740992 maxtext_utils.py:1565] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0422 21:39:23.098786 138957515740992 checkpointing.py:677] Setting up checkpoint logger... I0422 21:39:23.098842 138957515740992 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True I0422 21:39:23.098887 138957515740992 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0422 21:39:23.099242 138957515740992 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 0x7e60d9a500e0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0422 21:39:25.972617 138957515740992 checkpointing.py:265] Enabling policy for fixed interval checkpointing. I0422 21:39:25.972866 138957515740992 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 0x7e4c90252510>}, handler_registry=None I0422 21:39:25.973103 138957515740992 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7e4c90252510>` for item "items" and save args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>` to `_handler_registry`. I0422 21:39:25.973152 138957515740992 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7e4c902570e0>` for item "metrics" and save args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>` to `_handler_registry`. I0422 21:39:25.973191 138957515740992 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 0x7e4c90252510>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7e4c90252510>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7e4c902570e0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7e4c902570e0>}). I0422 21:39:25.973520 138957515740992 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0422 21:39:25.973590 138957515740992 async_checkpointer.py:192] [process=5][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7e4b9c7e72e0> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0422 21:39:27.088112 138957515740992 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_05_fp8/checkpoints I0422 21:39:27.539575 138957515740992 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_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_05_fp8/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7e4c90253140> I0422 21:39:27.539786 138957515740992 checkpointing.py:301] Checkpoint manager created! I0422 21:39:28.617497 138957515740992 nnx_wrappers.py:453] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0422 21:39:28.617615 138957515740992 nnx_wrappers.py:453] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0422 21:39:29.000883 138957515740992 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0422 21:39:29.000975 138957515740992 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0422 21:39:29.017268 138957515740992 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0422 21:39:29.017323 138957515740992 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0422 21:39:29.069931 138957515740992 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0422 21:39:29.070017 138957515740992 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 21:39:29.086499 138957515740992 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0422 21:39:29.086564 138957515740992 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 21:39:29.103016 138957515740992 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0422 21:39:29.103074 138957515740992 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 21:39:29.133706 138957515740992 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0422 21:39:29.133806 138957515740992 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 21:39:29.185219 138957515740992 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0422 21:39:29.185294 138957515740992 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0422 21:39:29.616585 138957515740992 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint I0422 21:39:29.616724 138957515740992 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0422 21:39:31.545114 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0422 21:39:31.545246 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: P() Physical: () I0422 21:39:31.545295 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0422 21:39:31.545333 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: P() Physical: () I0422 21:39:31.545375 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0422 21:39:31.545411 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: P() Physical: () I0422 21:39:31.545444 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0422 21:39:31.545474 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: P() Physical: () I0422 21:39:31.545505 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0422 21:39:31.545533 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: P() Physical: () I0422 21:39:31.545562 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0422 21:39:31.545592 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: P() Physical: () I0422 21:39:31.545624 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0422 21:39:31.545667 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: P() Physical: () I0422 21:39:31.545700 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0422 21:39:31.545730 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: P() Physical: () I0422 21:39:31.545758 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0422 21:39:31.545786 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: P() Physical: () I0422 21:39:31.545816 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0422 21:39:31.545844 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: P() Physical: () I0422 21:39:31.545872 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0422 21:39:31.545898 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: P() Physical: () I0422 21:39:31.545925 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0422 21:39:31.545952 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: P() Physical: () I0422 21:39:31.545983 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0422 21:39:31.546012 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: P() Physical: () I0422 21:39:31.546038 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0422 21:39:31.546064 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: P() Physical: () I0422 21:39:31.546091 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0422 21:39:31.546117 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: P() Physical: () I0422 21:39:31.546144 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0422 21:39:31.546170 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: P() Physical: () I0422 21:39:31.546196 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0422 21:39:31.546222 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: P() Physical: () I0422 21:39:31.546248 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0422 21:39:31.546274 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: P() Physical: () I0422 21:39:31.546300 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0422 21:39:31.546326 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: P() Physical: () I0422 21:39:31.546353 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0422 21:39:31.546379 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: P() Physical: () I0422 21:39:31.546407 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0422 21:39:31.546433 138957515740992 maxtext_utils.py:1668] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: P() Physical: () I0422 21:39:31.546485 138957515740992 maxtext_utils.py:1668] params/params/decoder/decoder_norm/scale Shape: float32[2048] Logical: P('norm',) Physical: (None,) I0422 21:39:31.546545 138957515740992 maxtext_utils.py:1668] params/params/decoder/layers/mlp/wi_0/kernel Shape: float32[2048,16,7168] Logical: P('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0422 21:39:31.546582 138957515740992 maxtext_utils.py:1668] params/params/decoder/layers/mlp/wi_1/kernel Shape: float32[2048,16,7168] Logical: P('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0422 21:39:31.546628 138957515740992 maxtext_utils.py:1668] params/params/decoder/layers/mlp/wo/kernel Shape: float32[7168,16,2048] Logical: P('mlp', 'layers', 'embed') Physical: (None, None, 'fsdp') I0422 21:39:31.546703 138957515740992 maxtext_utils.py:1668] params/params/decoder/layers/post_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: P('norm', 'layers') Physical: (None, None) I0422 21:39:31.546744 138957515740992 maxtext_utils.py:1668] params/params/decoder/layers/pre_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: P('norm', 'layers') Physical: (None, None) I0422 21:39:31.546794 138957515740992 maxtext_utils.py:1668] params/params/decoder/layers/self_attention/key/kernel Shape: float32[2048,16,16,128] Logical: P('embed', 'layers', 'kv_heads', 'kv_head_dim') Physical: ('fsdp', None, None, None) I0422 21:39:31.546842 138957515740992 maxtext_utils.py:1668] params/params/decoder/layers/self_attention/out/kernel Shape: float32[16,16,128,2048] Logical: P('heads', 'layers', 'kv', 'embed') Physical: (None, None, None, 'fsdp') I0422 21:39:31.546877 138957515740992 maxtext_utils.py:1668] params/params/decoder/layers/self_attention/query/kernel Shape: float32[2048,16,16,128] Logical: P('embed', 'layers', 'q_heads', 'kv') Physical: ('fsdp', None, None, None) I0422 21:39:31.546909 138957515740992 maxtext_utils.py:1668] params/params/decoder/layers/self_attention/value/kernel Shape: float32[2048,16,16,128] Logical: P('embed', 'layers', 'kv_heads', 'kv_head_dim') Physical: ('fsdp', None, None, None) I0422 21:39:31.546953 138957515740992 maxtext_utils.py:1668] params/params/decoder/logits_dense/kernel Shape: float32[2048,32000] Logical: P('embed_vocab', 'vocab') Physical: ('fsdp', None) I0422 21:39:31.547002 138957515740992 maxtext_utils.py:1668] params/params/token_embedder/embedding Shape: float32[32000,2048] Logical: P('vocab', 'embed_vocab') Physical: (None, 'fsdp') I0422 21:39:33.175905 138957515740992 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0422 21:39:33.176006 138957515740992 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None). I0422 21:39:33.191454 138957515740992 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0422 21:39:33.191514 138957515740992 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None). I0422 21:39:46.984049 138957515740992 max_utils.py:791] Total memory size: 1.5 GB, Output size: 0.4 GB, Temp size: 1.1 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB. I0422 21:39:46.984930 138957515740992 metric_logger.py:301] number parameters: 1.105 billion I0422 21:40:02.269160 138957515740992 checkpointing.py:772] Waiting for step 0 to finish before checkpoint... I0422 21:40:02.440023 138957515740992 checkpointing.py:776] Waited 0.17083144187927246 seconds for step 0 to finish before starting checkpointing. I0422 21:40:02.442326 138957515740992 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0422 21:40:02.444288 138957515740992 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 0 I0422 21:40:02.445705 138957515740992 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_05_fp8/checkpoints/0. I0422 21:40:03.180912 138957515740992 signaling_client.py:364] Using JaxDistributedSignalingClient I0422 21:40:03.181857 138957515740992 jax_array_handlers.py:360] Scheduling D2H of 81 prioritized jax.Array. I0422 21:40:03.181917 138957515740992 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False I0422 21:40:03.601113 138957515740992 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.420324s I0422 21:40:03.601288 138957515740992 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 3.597 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.4289381504058838 s) (per-host) I0422 21:40:03.601342 138957515740992 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.429003s (batch_requests_ready=0.003860s, total_serialization_initiated=0.425070s, others=0.000073s) I0422 21:40:03.601444 138957515740992 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.433120s (all_items=0.000019s, per_item={'items': '0.00001860'}, temp_paths=0.433102) I0422 21:40:03.602226 138957515740992 event_tracking.py:125] [process=5] [async] Finished blocking save in 1.16 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_05_fp8/checkpoints/0. I0422 21:40:03.602504 138827513071360 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 22:00:03.602481 I0422 21:40:03.607945 138957515740992 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0422 21:40:03.608267 138825959470848 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0422 21:40:03.608431 138957515740992 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_05_fp8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776894002.4423072, 'wait_for_prev_duration_secs': 6.0558319091796875e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776894002.444326, 'checkpointer_blocking_duration_secs': 1.1582872867584229, 'get_old_steps_start_time': 1776894003.6026366, 'get_old_steps_duration_secs': 4.291534423828125e-05, 'checkpoint_manager_blocking_start_time': 1776894002.44051, 'checkpoint_manager_blocking_duration_secs': 1.1678798198699951} I0422 21:40:03.608548 138957515740992 checkpointing.py:408] Started an asynchronous checkpoint save for step 0 I0422 21:40:03.608601 138957515740992 max_utils.py:750] Memstats: After params initialized: I0422 21:40:03.608667 138957515740992 max_utils.py:756] Using (GB) 0.45 / 31.25 (1.440000%) on TPU_18(process=5,(2,4,0,0)) I0422 21:40:03.608705 138957515740992 max_utils.py:756] Using (GB) 0.45 / 31.25 (1.440000%) on TPU_19(process=5,(3,4,0,0)) I0422 21:40:03.608735 138957515740992 max_utils.py:756] Using (GB) 0.45 / 31.25 (1.440000%) on TPU_22(process=5,(2,5,0,0)) I0422 21:40:03.608761 138957515740992 max_utils.py:756] Using (GB) 0.45 / 31.25 (1.440000%) on TPU_23(process=5,(3,5,0,0)) I0422 21:40:03.925884 138957515740992 metric_logger.py:196] completed step: 0, seconds: 15.284, TFLOP/s/device: 0.889, Tokens/s/device: 133.995, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52776.805 I0422 21:40:04.113258 138957515740992 metric_logger.py:196] completed step: 1, seconds: 1.654, TFLOP/s/device: 8.215, Tokens/s/device: 1238.282, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52761.840 I0422 21:40:04.532904 138957515740992 metric_logger.py:196] completed step: 2, seconds: 0.031, TFLOP/s/device: 442.016, Tokens/s/device: 66625.460, total_weights: 65536, loss: 10.816, lm_loss: 10.816, perplexity: 49832.398 I0422 21:40:04.691360 138957515740992 metric_logger.py:196] completed step: 3, seconds: 0.420, TFLOP/s/device: 32.386, Tokens/s/device: 4881.630, total_weights: 65536, loss: 10.431, lm_loss: 10.431, perplexity: 33901.820 I0422 21:40:05.009282 138957515740992 metric_logger.py:196] completed step: 4, seconds: 0.164, TFLOP/s/device: 82.647, Tokens/s/device: 12457.421, total_weights: 65536, loss: 9.992, lm_loss: 9.992, perplexity: 21847.639 I0422 21:40:05.016377 138957515740992 metric_logger.py:196] completed step: 5, seconds: 0.158, TFLOP/s/device: 85.878, Tokens/s/device: 12944.411, total_weights: 65536, loss: 9.549, lm_loss: 9.549, perplexity: 14035.006 I0422 21:40:06.578024 2837 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0422 21:40:08.535791 138827014321920 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 81 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_05_fp8/checkpoints/0/items/array_metadatas/process_5 I0422 21:40:23.845853 138827513071360 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 76.415 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 20.67346501350403 s) (per-host) I0422 21:40:23.845977 138827513071360 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 20.243398s. I0422 21:40:29.568785 138957515740992 metric_logger.py:196] completed step: 6, seconds: 0.319, TFLOP/s/device: 42.587, Tokens/s/device: 6419.238, total_weights: 65536, loss: 9.111, lm_loss: 9.111, perplexity: 9058.688 I0422 21:40:29.727630 138957515740992 metric_logger.py:196] completed step: 7, seconds: 24.395, TFLOP/s/device: 0.557, Tokens/s/device: 83.951, total_weights: 65536, loss: 8.685, lm_loss: 8.685, perplexity: 5914.720 I0422 21:40:29.886546 138957515740992 metric_logger.py:196] completed step: 8, seconds: 0.164, TFLOP/s/device: 83.087, Tokens/s/device: 12523.773, total_weights: 65536, loss: 8.281, lm_loss: 8.281, perplexity: 3950.010 I0422 21:40:29.891551 138957515740992 checkpointing.py:772] Waiting for step 10 to finish before checkpoint... I0422 21:40:30.203035 138957515740992 checkpointing.py:776] Waited 0.3114490509033203 seconds for step 10 to finish before starting checkpointing. I0422 21:40:30.205682 138957515740992 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0422 21:40:31.668529 138827513071360 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 28.065934s. I0422 21:40:31.668849 138825959470848 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0422 21:40:31.668976 138825959470848 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0422 21:40:31.669028 138825959470848 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0422 21:40:31.670768 138825959470848 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0422 21:40:31.670950 138957515740992 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. W0422 21:40:31.671078 138957515740992 checkpoint_manager.py:1452] Waiting for previous save to complete took 1.465410 seconds. If this number is high, consider checkpointing less frequently. I0422 21:40:31.672851 138957515740992 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 10 I0422 21:40:31.674846 138957515740992 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_05_fp8/checkpoints/10. I0422 21:40:32.382464 138957515740992 jax_array_handlers.py:360] Scheduling D2H of 81 prioritized jax.Array. I0422 21:40:32.382557 138957515740992 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False I0422 21:40:32.420544 138957515740992 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.038947s I0422 21:40:32.420695 138957515740992 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 34.060 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04529404640197754 s) (per-host) I0422 21:40:32.420746 138957515740992 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.045355s (batch_requests_ready=0.003293s, total_serialization_initiated=0.041994s, others=0.000068s) I0422 21:40:32.420831 138957515740992 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.049517s (all_items=0.000016s, per_item={'items': '0.00001597'}, temp_paths=0.049501) I0422 21:40:32.421545 138957515740992 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.75 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_05_fp8/checkpoints/10. I0422 21:40:32.421893 138825959470848 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 22:00:32.421856 I0422 21:40:32.425631 138957515740992 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=10] Starting CheckpointManager Save Finalize thread=save_finalize I0422 21:40:32.425936 138824832276224 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0422 21:40:32.426079 138957515740992 standard_logger.py:34] {'step': 10, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_05_fp8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776894030.2056372, 'wait_for_prev_duration_secs': 1.4654102325439453, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776894031.6728888, 'checkpointer_blocking_duration_secs': 0.7491481304168701, 'get_old_steps_start_time': 1776894032.4220588, 'get_old_steps_duration_secs': 3.147125244140625e-05, 'checkpoint_manager_blocking_start_time': 1776894030.203811, 'checkpoint_manager_blocking_duration_secs': 2.2222349643707275} I0422 21:40:32.426247 138957515740992 checkpointing.py:408] Started an asynchronous checkpoint save for step 10 I0422 21:40:32.426976 138957515740992 metric_logger.py:196] completed step: 9, seconds: 0.159, TFLOP/s/device: 85.581, Tokens/s/device: 12899.650, total_weights: 65536, loss: 7.908, lm_loss: 7.908, perplexity: 2720.116 I0422 21:40:32.434510 138957515740992 metric_logger.py:196] completed step: 10, seconds: 0.159, TFLOP/s/device: 85.570, Tokens/s/device: 12898.025, total_weights: 65536, loss: 7.568, lm_loss: 7.568, perplexity: 1936.198 I0422 21:40:32.591918 138957515740992 metric_logger.py:196] completed step: 11, seconds: 2.541, TFLOP/s/device: 5.348, Tokens/s/device: 806.099, total_weights: 65536, loss: 7.288, lm_loss: 7.288, perplexity: 1463.272 I0422 21:40:33.154016 138957515740992 metric_logger.py:196] completed step: 12, seconds: 0.006, TFLOP/s/device: 2108.820, Tokens/s/device: 317864.349, total_weights: 65536, loss: 7.032, lm_loss: 7.032, perplexity: 1132.061 I0422 21:40:33.312323 138957515740992 metric_logger.py:196] completed step: 13, seconds: 0.557, TFLOP/s/device: 24.384, Tokens/s/device: 3675.448, total_weights: 65536, loss: 6.815, lm_loss: 6.815, perplexity: 911.031 I0422 21:40:33.470796 138957515740992 metric_logger.py:196] completed step: 14, seconds: 0.163, TFLOP/s/device: 83.175, Tokens/s/device: 12537.036, total_weights: 65536, loss: 6.635, lm_loss: 6.635, perplexity: 761.080 I0422 21:40:33.629552 138957515740992 metric_logger.py:196] completed step: 15, seconds: 0.158, TFLOP/s/device: 85.854, Tokens/s/device: 12940.812, total_weights: 65536, loss: 6.492, lm_loss: 6.492, perplexity: 659.915 I0422 21:40:33.787833 138957515740992 metric_logger.py:196] completed step: 16, seconds: 0.158, TFLOP/s/device: 85.843, Tokens/s/device: 12939.177, total_weights: 65536, loss: 6.380, lm_loss: 6.380, perplexity: 589.948 I0422 21:40:33.946089 138957515740992 metric_logger.py:196] completed step: 17, seconds: 0.159, TFLOP/s/device: 85.613, Tokens/s/device: 12904.527, total_weights: 65536, loss: 6.293, lm_loss: 6.293, perplexity: 540.941 I0422 21:40:34.104264 138957515740992 metric_logger.py:196] completed step: 18, seconds: 0.158, TFLOP/s/device: 85.804, Tokens/s/device: 12933.294, total_weights: 65536, loss: 6.223, lm_loss: 6.223, perplexity: 504.108 I0422 21:40:34.261949 138957515740992 checkpointing.py:772] Waiting for step 19 to finish before checkpoint... I0422 21:40:34.262984 138957515740992 checkpointing.py:776] Waited 0.0010612010955810547 seconds for step 19 to finish before starting checkpointing. I0422 21:40:34.265113 138957515740992 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=10][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0422 21:40:38.462736 138823786809088 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 81 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_05_fp8/checkpoints/10/items/array_metadatas/process_5 I0422 21:41:15.684344 138825959470848 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 36.477 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 43.30888509750366 s) (per-host) I0422 21:41:15.684470 138825959470848 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 43.262462s. I0422 21:41:21.968394 138825959470848 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 49.546371s. I0422 21:41:21.968746 138824832276224 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0422 21:41:21.968868 138824832276224 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0422 21:41:21.968918 138824832276224 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=10] CheckpointManager Save Finalize is syncing with other hosts... I0422 21:41:21.970463 138824832276224 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=10] CheckpointManager Save Finalize is done on all hosts. I0422 21:41:21.970678 138957515740992 checkpoint_manager.py:2032] [process=5][thread=MainThread][step=10][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=10. W0422 21:41:21.970808 138957515740992 checkpoint_manager.py:1452] Waiting for previous save to complete took 47.705699 seconds. If this number is high, consider checkpointing less frequently. I0422 21:41:21.972391 138957515740992 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 19 I0422 21:41:21.974685 138957515740992 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_05_fp8/checkpoints/19. I0422 21:41:22.675162 138957515740992 jax_array_handlers.py:360] Scheduling D2H of 81 prioritized jax.Array. I0422 21:41:22.675264 138957515740992 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False I0422 21:41:22.712500 138957515740992 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.038276s I0422 21:41:22.712693 138957515740992 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 34.536 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.044670820236206055 s) (per-host) I0422 21:41:22.712749 138957515740992 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.044739s (batch_requests_ready=0.003250s, total_serialization_initiated=0.041415s, others=0.000074s) I0422 21:41:22.712881 138957515740992 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.049057s (all_items=0.000010s, per_item={'items': '0.00001049'}, temp_paths=0.049046) I0422 21:41:22.713594 138957515740992 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.74 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_05_fp8/checkpoints/19. I0422 21:41:22.713925 138824832276224 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 22:01:22.713888 I0422 21:41:22.718164 138957515740992 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=19] Starting CheckpointManager Save Finalize thread=save_finalize I0422 21:41:22.718471 138822721459968 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0422 21:41:22.718629 138957515740992 standard_logger.py:34] {'step': 19, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_05_fp8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776894034.2650847, 'wait_for_prev_duration_secs': 47.7056987285614, 'time_between_consecutive_saves_sec': 2.5942773818969727, 'checkpointer_blocking_start_time': 1776894081.97243, 'checkpointer_blocking_duration_secs': 0.7416467666625977, 'get_old_steps_start_time': 1776894082.7140946, 'get_old_steps_duration_secs': 2.574920654296875e-05, 'checkpoint_manager_blocking_start_time': 1776894034.2632616, 'checkpoint_manager_blocking_duration_secs': 48.45533585548401} I0422 21:41:22.718750 138957515740992 checkpointing.py:408] Started an asynchronous checkpoint save for step 19 I0422 21:41:22.718792 138957515740992 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=19][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0422 21:41:28.260414 138823786809088 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 81 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_05_fp8/checkpoints/19/items/array_metadatas/process_5 I0422 21:42:04.350531 138824832276224 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 37.900 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.682472467422485 s) (per-host) I0422 21:42:04.350648 138824832276224 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.636612s. I0422 21:42:13.089827 138824832276224 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 50.375775s. I0422 21:42:13.090124 138822721459968 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0422 21:42:13.090256 138822721459968 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0422 21:42:13.090306 138822721459968 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=19] CheckpointManager Save Finalize is syncing with other hosts... I0422 21:42:13.092910 138822721459968 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=19] CheckpointManager Save Finalize is done on all hosts. I0422 21:42:13.093080 138957515740992 checkpoint_manager.py:2032] [process=5][thread=MainThread][step=19][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=19. I0422 21:42:13.093228 138957515740992 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0422 21:42:13.094208 138957515740992 metric_logger.py:196] completed step: 19, seconds: 0.158, TFLOP/s/device: 85.854, Tokens/s/device: 12940.894, total_weights: 65536, loss: 6.167, lm_loss: 6.167, perplexity: 476.947 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops XPK End: Wed Apr 22 21:42:25 UTC 2026 EXIT_CODE=0