main (59e0f1759) vs feat/nnx-set-defaults-true (73213e044)| Metric | main 59e0f1759 | feat/nnx-set-defaults-true 73213e044 | Diff (feat/nnx-set-defaults-true − main) |
|---|---|---|---|
| Parameters | 1.105 billion | 1.105 billion | — |
| Final loss | 6.1670 | 6.1670 | 0 |
| TFLOP/s | 85.760 | 85.813 | +0.053 |
| Tok/s | 12926.7 | 12934.7 | +8.001 |
| Avg s/step | 1.599 | 2.652 | +1.053 |
| Memory % | 1.44 | 1.44 | 0 |
| JAX | 0.9.2 | 0.8.1 | — |
Diff = branch value − main value. Green = branch improved. Red = branch regressed.
XPK Start: Sat Apr 25 07:24:28 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 07:24:53.519576: 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 07:24:53.726617 136390415513408 max_utils.py:273] Attempting to initialize the jax distributed system... I0425 07:25:02.768357 136390415513408 distributed.py:149] Starting JAX distributed service on [::]:8482 I0425 07:25:02.770697 136390415513408 distributed.py:172] Connecting to JAX distributed service on mt-05-fp8-peg96-slice-job-0-0.mt-05-fp8-peg96:8482 I0425 07:25:04.453753 136390415513408 max_utils.py:284] Jax distributed system initialized! I0425 07:25:10.762574 136390415513408 max_utils.py:800] System Information: Jax Version: 0.9.2 I0425 07:25:10.762679 136390415513408 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0425 07:25:10.762721 136390415513408 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 07:25:10.762756 136390415513408 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0425 07:25:11.456088 136390415513408 maxtext_utils.py:1604] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1) I0425 07:25:11.456395 136390415513408 checkpointing.py:677] Setting up checkpoint logger... I0425 07:25:11.456452 136390415513408 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True I0425 07:25:11.456497 136390415513408 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0425 07:25:11.456837 136390415513408 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 0x7c0b26b3f650>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0425 07:25:14.349413 136390415513408 checkpointing.py:265] Enabling policy for fixed interval checkpointing. I0425 07:25:14.349650 136390415513408 checkpoint_manager.py:708] [process=6][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7bf7087c08c0>}, handler_registry=None I0425 07:25:14.349889 136390415513408 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7bf7087c08c0>` 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 07:25:14.349937 136390415513408 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7bf7087be630>` 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 07:25:14.349973 136390415513408 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 0x7bf7087c08c0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7bf7087c08c0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7bf7087be630>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7bf7087be630>}). I0425 07:25:14.350314 136390415513408 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0425 07:25:14.350384 136390415513408 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7bf708195940> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0425 07:25:15.091848 136390415513408 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_05_fp8/checkpoints I0425 07:25:15.097051 136390415513408 checkpoint_manager.py:929] [process=6][thread=MainThread] CheckpointManager created, primary_host=0, CheckpointManagerOptions=CheckpointManagerOptions(save_interval_steps=1, max_to_keep=None, keep_time_interval=None, keep_period=None, should_keep_fn=None, best_fn=None, best_mode='max', keep_checkpoints_without_metrics=True, step_prefix=None, step_format_fixed_length=None, step_name_format=None, create=True, cleanup_tmp_directories=False, save_on_steps=frozenset(), single_host_load_and_broadcast=False, todelete_subdir=None, todelete_full_path=None, enable_background_delete=False, read_only=False, enable_async_checkpointing=True, async_options=None, multiprocessing_options=MultiprocessingOptions(primary_host=0, active_processes=None, barrier_sync_key_prefix=None), should_save_fn=None, file_options=FileOptions(path_permission_mode=None), save_root_metadata=True, temporary_path_class=None, save_decision_policy=FixedIntervalPolicy(interval=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_05_fp8/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7bf7087c2780> I0425 07:25:15.097178 136390415513408 checkpointing.py:301] Checkpoint manager created! I0425 07:25:16.181551 136390415513408 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0425 07:25:16.181676 136390415513408 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 07:25:16.568191 136390415513408 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch_attn', 'activation_length_attn', 'activation_embed_attn'). I0425 07:25:16.568288 136390415513408 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 07:25:16.584976 136390415513408 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch_attn', 'activation_length_attn', 'activation_embed_attn'). I0425 07:25:16.585039 136390415513408 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 07:25:16.638058 136390415513408 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim'). I0425 07:25:16.638156 136390415513408 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 07:25:16.654814 136390415513408 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim'). I0425 07:25:16.654877 136390415513408 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 07:25:16.671667 136390415513408 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim'). I0425 07:25:16.671730 136390415513408 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 07:25:16.696830 136390415513408 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch_attn', 'activation_length_attn', 'activation_heads', 'activation_kv'). I0425 07:25:16.696899 136390415513408 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 07:25:16.749223 136390415513408 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0425 07:25:16.749303 136390415513408 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0425 07:25:17.182524 136390415513408 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint I0425 07:25:17.182638 136390415513408 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0425 07:25:19.117067 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0425 07:25:19.117223 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: P() Physical: () I0425 07:25:19.117297 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0425 07:25:19.117358 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: P() Physical: () I0425 07:25:19.117416 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0425 07:25:19.117473 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: P() Physical: () I0425 07:25:19.117527 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0425 07:25:19.117578 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: P() Physical: () I0425 07:25:19.117627 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0425 07:25:19.117674 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: P() Physical: () I0425 07:25:19.117722 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0425 07:25:19.117769 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: P() Physical: () I0425 07:25:19.117818 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0425 07:25:19.117864 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: P() Physical: () I0425 07:25:19.117910 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0425 07:25:19.117955 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: P() Physical: () I0425 07:25:19.118000 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0425 07:25:19.118045 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: P() Physical: () I0425 07:25:19.118091 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0425 07:25:19.118155 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: P() Physical: () I0425 07:25:19.118201 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0425 07:25:19.118244 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: P() Physical: () I0425 07:25:19.118293 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0425 07:25:19.118336 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: P() Physical: () I0425 07:25:19.118380 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0425 07:25:19.118422 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: P() Physical: () I0425 07:25:19.118465 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0425 07:25:19.118509 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: P() Physical: () I0425 07:25:19.118553 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0425 07:25:19.118596 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: P() Physical: () I0425 07:25:19.118638 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0425 07:25:19.118682 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: P() Physical: () I0425 07:25:19.118725 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0425 07:25:19.118774 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: P() Physical: () I0425 07:25:19.118816 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0425 07:25:19.118845 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: P() Physical: () I0425 07:25:19.118873 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0425 07:25:19.118899 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: P() Physical: () I0425 07:25:19.118926 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0425 07:25:19.118953 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: P() Physical: () I0425 07:25:19.118980 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0425 07:25:19.119006 136390415513408 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: P() Physical: () I0425 07:25:19.119058 136390415513408 maxtext_utils.py:1707] params/params/decoder/decoder_norm/scale Shape: float32[2048] Logical: P('norm',) Physical: (None,) I0425 07:25:19.119144 136390415513408 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 07:25:19.119186 136390415513408 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 07:25:19.119235 136390415513408 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 07:25:19.119287 136390415513408 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 07:25:19.119320 136390415513408 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 07:25:19.119366 136390415513408 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 07:25:19.119413 136390415513408 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 07:25:19.119448 136390415513408 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 07:25:19.119481 136390415513408 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 07:25:19.119525 136390415513408 maxtext_utils.py:1707] params/params/decoder/logits_dense/kernel Shape: float32[2048,32000] Logical: P('embed_vocab', 'vocab') Physical: ('fsdp', None) I0425 07:25:19.119568 136390415513408 maxtext_utils.py:1707] params/params/token_embedder/embedding Shape: float32[32000,2048] Logical: P('vocab', 'embed_vocab') Physical: (None, 'fsdp') I0425 07:25:20.752288 136390415513408 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0425 07:25:20.752384 136390415513408 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None). I0425 07:25:20.768080 136390415513408 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0425 07:25:20.768154 136390415513408 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None). I0425 07:25:34.605504 136390415513408 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. I0425 07:25:34.606443 136390415513408 metric_logger.py:301] number parameters: 1.105 billion I0425 07:25:49.899983 136390415513408 checkpointing.py:772] Waiting for step 0 to finish before checkpoint... I0425 07:25:50.069348 136390415513408 checkpointing.py:776] Waited 0.16933631896972656 seconds for step 0 to finish before starting checkpointing. I0425 07:25:50.071800 136390415513408 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0425 07:25:50.073707 136390415513408 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 0 I0425 07:25:50.075090 136390415513408 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_05_fp8/checkpoints/0. I0425 07:25:50.723269 136390415513408 signaling_client.py:364] Using JaxDistributedSignalingClient I0425 07:25:50.724310 136390415513408 jax_array_handlers.py:360] Scheduling D2H of 81 prioritized jax.Array. I0425 07:25:50.724373 136390415513408 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 07:25:51.134683 136390415513408 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.411533s I0425 07:25:51.134854 136390415513408 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 3.675 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.4198460578918457 s) (per-host) I0425 07:25:51.134907 136390415513408 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.419909s (batch_requests_ready=0.003619s, total_serialization_initiated=0.416219s, others=0.000072s) I0425 07:25:51.135011 136390415513408 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.424046s (all_items=0.000018s, per_item={'items': '0.00001764'}, temp_paths=0.424029) I0425 07:25:51.135826 136390415513408 event_tracking.py:125] [process=6] [async] Finished blocking save in 1.06 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_05_fp8/checkpoints/0. I0425 07:25:51.136180 136260723144448 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 07:45:51.136140 I0425 07:25:51.139879 136390415513408 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0425 07:25:51.140120 136260665087744 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0425 07:25:51.140239 136390415513408 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_05_fp8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777101950.0717812, 'wait_for_prev_duration_secs': 6.246566772460938e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777101950.0737474, 'checkpointer_blocking_duration_secs': 1.0625362396240234, 'get_old_steps_start_time': 1777101951.1363106, 'get_old_steps_duration_secs': 2.9802322387695312e-05, 'checkpoint_manager_blocking_start_time': 1777101950.0699418, 'checkpoint_manager_blocking_duration_secs': 1.0702595710754395} I0425 07:25:51.140352 136390415513408 checkpointing.py:408] Started an asynchronous checkpoint save for step 0 I0425 07:25:51.140402 136390415513408 max_utils.py:750] Memstats: After params initialized: I0425 07:25:51.140450 136390415513408 max_utils.py:756] Using (GB) 0.45 / 31.25 (1.440000%) on TPU_24(process=6,(0,6,0,0)) I0425 07:25:51.140489 136390415513408 max_utils.py:756] Using (GB) 0.45 / 31.25 (1.440000%) on TPU_25(process=6,(1,6,0,0)) I0425 07:25:51.140517 136390415513408 max_utils.py:756] Using (GB) 0.45 / 31.25 (1.440000%) on TPU_28(process=6,(0,7,0,0)) I0425 07:25:51.140543 136390415513408 max_utils.py:756] Using (GB) 0.45 / 31.25 (1.440000%) on TPU_29(process=6,(1,7,0,0)) I0425 07:25:51.454913 136390415513408 metric_logger.py:196] completed step: 0, seconds: 15.293, TFLOP/s/device: 0.888, Tokens/s/device: 133.914, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52776.805 I0425 07:25:51.727996 136390415513408 metric_logger.py:196] completed step: 1, seconds: 1.553, TFLOP/s/device: 8.750, Tokens/s/device: 1318.864, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52761.840 I0425 07:25:52.137902 136390415513408 metric_logger.py:196] completed step: 2, seconds: 0.116, TFLOP/s/device: 117.438, Tokens/s/device: 17701.563, total_weights: 65536, loss: 10.816, lm_loss: 10.816, perplexity: 49832.398 I0425 07:25:52.296509 136390415513408 metric_logger.py:196] completed step: 3, seconds: 0.410, TFLOP/s/device: 33.176, Tokens/s/device: 5000.659, total_weights: 65536, loss: 10.431, lm_loss: 10.431, perplexity: 33901.820 I0425 07:25:52.614904 136390415513408 metric_logger.py:196] completed step: 4, seconds: 0.165, TFLOP/s/device: 82.529, Tokens/s/device: 12439.715, total_weights: 65536, loss: 9.992, lm_loss: 9.992, perplexity: 21847.639 I0425 07:25:52.621479 136390415513408 metric_logger.py:196] completed step: 5, seconds: 0.159, TFLOP/s/device: 85.700, Tokens/s/device: 12917.631, total_weights: 65536, loss: 9.549, lm_loss: 9.549, perplexity: 14035.006 I0425 07:25:54.182582 2815 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0425 07:25:56.225918 136260706359040 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 81 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_05_fp8/checkpoints/0/items/array_metadatas/process_6 I0425 07:26:11.245802 136260723144448 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 76.946 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 20.530755281448364 s) (per-host) I0425 07:26:11.245925 136260723144448 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 20.109086s. I0425 07:26:16.625491 136390415513408 metric_logger.py:196] completed step: 6, seconds: 0.319, TFLOP/s/device: 42.599, Tokens/s/device: 6421.009, total_weights: 65536, loss: 9.111, lm_loss: 9.111, perplexity: 9058.688 I0425 07:26:16.783863 136390415513408 metric_logger.py:196] completed step: 7, seconds: 23.847, TFLOP/s/device: 0.570, Tokens/s/device: 85.882, total_weights: 65536, loss: 8.685, lm_loss: 8.685, perplexity: 5914.720 I0425 07:26:16.942298 136390415513408 metric_logger.py:196] completed step: 8, seconds: 0.163, TFLOP/s/device: 83.138, Tokens/s/device: 12531.512, total_weights: 65536, loss: 8.281, lm_loss: 8.281, perplexity: 3950.010 I0425 07:26:16.947610 136390415513408 checkpointing.py:772] Waiting for step 10 to finish before checkpoint... I0425 07:26:17.259315 136390415513408 checkpointing.py:776] Waited 0.31166744232177734 seconds for step 10 to finish before starting checkpointing. I0425 07:26:17.261840 136390415513408 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0425 07:26:18.270532 136260723144448 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 27.133677s. I0425 07:26:18.270800 136260665087744 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0425 07:26:18.270868 136260665087744 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0425 07:26:18.270924 136260665087744 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0425 07:26:18.272624 136260665087744 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0425 07:26:18.272781 136390415513408 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0. W0425 07:26:18.272913 136390415513408 checkpoint_manager.py:1452] Waiting for previous save to complete took 1.011072 seconds. If this number is high, consider checkpointing less frequently. I0425 07:26:18.275038 136390415513408 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 10 I0425 07:26:18.277140 136390415513408 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_05_fp8/checkpoints/10. I0425 07:26:18.559673 136390415513408 jax_array_handlers.py:360] Scheduling D2H of 81 prioritized jax.Array. I0425 07:26:18.559770 136390415513408 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 07:26:18.612209 136390415513408 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.053529s I0425 07:26:18.612378 136390415513408 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 25.885 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.059600114822387695 s) (per-host) I0425 07:26:18.612428 136390415513408 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.059660s (batch_requests_ready=0.003022s, total_serialization_initiated=0.056570s, others=0.000068s) I0425 07:26:18.612531 136390415513408 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.064102s (all_items=0.000015s, per_item={'items': '0.00001454'}, temp_paths=0.064088) I0425 07:26:18.613256 136390415513408 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.34 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_05_fp8/checkpoints/10. I0425 07:26:18.613604 136260665087744 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 07:46:18.613567 I0425 07:26:18.615598 136390415513408 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=10] Starting CheckpointManager Save Finalize thread=save_finalize I0425 07:26:18.615838 136259615831808 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0425 07:26:18.615995 136390415513408 standard_logger.py:34] {'step': 10, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_05_fp8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777101977.2618113, 'wait_for_prev_duration_secs': 1.0110721588134766, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777101978.275079, 'checkpointer_blocking_duration_secs': 0.3386685848236084, 'get_old_steps_start_time': 1777101978.613771, 'get_old_steps_duration_secs': 3.361701965332031e-05, 'checkpoint_manager_blocking_start_time': 1777101977.2600794, 'checkpoint_manager_blocking_duration_secs': 1.355881690979004} I0425 07:26:18.616124 136390415513408 checkpointing.py:408] Started an asynchronous checkpoint save for step 10 I0425 07:26:18.616721 136390415513408 metric_logger.py:196] completed step: 9, seconds: 0.158, TFLOP/s/device: 85.888, Tokens/s/device: 12946.048, total_weights: 65536, loss: 7.908, lm_loss: 7.908, perplexity: 2720.116 I0425 07:26:18.623249 136390415513408 metric_logger.py:196] completed step: 10, seconds: 0.159, TFLOP/s/device: 85.574, Tokens/s/device: 12898.675, total_weights: 65536, loss: 7.568, lm_loss: 7.568, perplexity: 1936.198 I0425 07:26:19.332669 136390415513408 metric_logger.py:196] completed step: 11, seconds: 1.674, TFLOP/s/device: 8.118, Tokens/s/device: 1223.619, total_weights: 65536, loss: 7.288, lm_loss: 7.288, perplexity: 1463.272 I0425 07:26:19.490967 136390415513408 metric_logger.py:196] completed step: 12, seconds: 0.553, TFLOP/s/device: 24.568, Tokens/s/device: 3703.195, total_weights: 65536, loss: 7.032, lm_loss: 7.032, perplexity: 1132.061 I0425 07:26:19.649172 136390415513408 metric_logger.py:196] completed step: 13, seconds: 0.163, TFLOP/s/device: 83.317, Tokens/s/device: 12558.408, total_weights: 65536, loss: 6.815, lm_loss: 6.815, perplexity: 911.031 I0425 07:26:19.807804 136390415513408 metric_logger.py:196] completed step: 14, seconds: 0.158, TFLOP/s/device: 85.892, Tokens/s/device: 12946.539, total_weights: 65536, loss: 6.635, lm_loss: 6.635, perplexity: 761.080 I0425 07:26:19.966045 136390415513408 metric_logger.py:196] completed step: 15, seconds: 0.158, TFLOP/s/device: 85.847, Tokens/s/device: 12939.749, total_weights: 65536, loss: 6.492, lm_loss: 6.492, perplexity: 659.915 I0425 07:26:20.124291 136390415513408 metric_logger.py:196] completed step: 16, seconds: 0.159, TFLOP/s/device: 85.651, Tokens/s/device: 12910.302, total_weights: 65536, loss: 6.380, lm_loss: 6.380, perplexity: 589.948 I0425 07:26:20.282649 136390415513408 metric_logger.py:196] completed step: 17, seconds: 0.158, TFLOP/s/device: 85.824, Tokens/s/device: 12936.316, total_weights: 65536, loss: 6.293, lm_loss: 6.293, perplexity: 540.941 I0425 07:26:20.440768 136390415513408 metric_logger.py:196] completed step: 18, seconds: 0.158, TFLOP/s/device: 85.931, Tokens/s/device: 12952.434, total_weights: 65536, loss: 6.223, lm_loss: 6.223, perplexity: 504.108 I0425 07:26:20.598376 136390415513408 checkpointing.py:772] Waiting for step 19 to finish before checkpoint... I0425 07:26:20.599289 136390415513408 checkpointing.py:776] Waited 0.0009329319000244141 seconds for step 19 to finish before starting checkpointing. I0425 07:26:20.601536 136390415513408 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=10][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0425 07:26:24.178619 136259641009920 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 81 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_05_fp8/checkpoints/10/items/array_metadatas/process_6 I0425 07:27:01.180286 136260665087744 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 37.060 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.62746524810791 s) (per-host) I0425 07:27:01.180416 136260665087744 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.566700s. I0425 07:27:08.500976 136260665087744 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 49.887244s. I0425 07:27:08.501283 136259615831808 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0425 07:27:08.501411 136259615831808 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0425 07:27:08.501469 136259615831808 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=10] CheckpointManager Save Finalize is syncing with other hosts... I0425 07:27:08.503132 136259615831808 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=10] CheckpointManager Save Finalize is done on all hosts. I0425 07:27:08.503320 136390415513408 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=10][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=10. W0425 07:27:08.503450 136390415513408 checkpoint_manager.py:1452] Waiting for previous save to complete took 47.901927 seconds. If this number is high, consider checkpointing less frequently. I0425 07:27:08.505011 136390415513408 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 19 I0425 07:27:08.507140 136390415513408 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_05_fp8/checkpoints/19. I0425 07:27:09.214677 136390415513408 jax_array_handlers.py:360] Scheduling D2H of 81 prioritized jax.Array. I0425 07:27:09.214774 136390415513408 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 07:27:09.268934 136390415513408 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.055197s I0425 07:27:09.269122 136390415513408 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 25.192 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.06123828887939453 s) (per-host) I0425 07:27:09.269171 136390415513408 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.061321s (batch_requests_ready=0.002976s, total_serialization_initiated=0.058257s, others=0.000088s) I0425 07:27:09.269269 136390415513408 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.065483s (all_items=0.000010s, per_item={'items': '0.00000954'}, temp_paths=0.065474) I0425 07:27:09.269985 136390415513408 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.76 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_05_fp8/checkpoints/19. I0425 07:27:09.270366 136259615831808 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 07:47:09.270332 I0425 07:27:09.272365 136390415513408 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=19] Starting CheckpointManager Save Finalize thread=save_finalize I0425 07:27:09.272573 136259065964288 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0425 07:27:09.272686 136390415513408 standard_logger.py:34] {'step': 19, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_05_fp8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777101980.6014988, 'wait_for_prev_duration_secs': 47.90192747116089, 'time_between_consecutive_saves_sec': 2.3288350105285645, 'checkpointer_blocking_start_time': 1777102028.5050497, 'checkpointer_blocking_duration_secs': 0.7654757499694824, 'get_old_steps_start_time': 1777102029.2705438, 'get_old_steps_duration_secs': 2.5987625122070312e-05, 'checkpoint_manager_blocking_start_time': 1777101980.5995584, 'checkpoint_manager_blocking_duration_secs': 48.67309784889221} I0425 07:27:09.272795 136390415513408 checkpointing.py:408] Started an asynchronous checkpoint save for step 19 I0425 07:27:09.272836 136390415513408 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=19][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0425 07:27:15.403674 136256925325056 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 81 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_05_fp8/checkpoints/19/items/array_metadatas/process_6 I0425 07:27:52.232533 136259615831808 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 36.718 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 43.02461338043213 s) (per-host) I0425 07:27:52.232652 136259615831808 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.962170s. I0425 07:28:00.802175 136259615831808 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 51.531678s. I0425 07:28:00.802396 136259065964288 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0425 07:28:00.802463 136259065964288 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0425 07:28:00.802509 136259065964288 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=19] CheckpointManager Save Finalize is syncing with other hosts... I0425 07:28:00.804114 136259065964288 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=19] CheckpointManager Save Finalize is done on all hosts. I0425 07:28:00.804279 136390415513408 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=19][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=19. I0425 07:28:00.804436 136390415513408 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0425 07:28:00.805332 136390415513408 metric_logger.py:196] completed step: 19, seconds: 0.158, TFLOP/s/device: 85.760, Tokens/s/device: 12926.681, 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: Sat Apr 25 07:28:13 UTC 2026 EXIT_CODE=0
XPK Start: Sat Apr 25 15:13:54 UTC 2026 2026-04-25 15:13:58.420137: E external/local_xla/xla/stream_executor/cuda/cuda_fft.cc:467] Unable to register cuFFT factory: Attempting to register factory for plugin cuFFT when one has already been registered WARNING: All log messages before absl::InitializeLog() is called are written to STDERR E0000 00:00:1777130038.432894 10 cuda_dnn.cc:8579] Unable to register cuDNN factory: Attempting to register factory for plugin cuDNN when one has already been registered E0000 00:00:1777130038.436750 10 cuda_blas.cc:1407] Unable to register cuBLAS factory: Attempting to register factory for plugin cuBLAS when one has already been registered W0000 00:00:1777130038.447826 10 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once. W0000 00:00:1777130038.447845 10 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once. W0000 00:00:1777130038.447848 10 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once. W0000 00:00:1777130038.447850 10 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once. 2026-04-25 15:14:17.746177: 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 15:14:18.269782 138956914530112 max_utils.py:273] Attempting to initialize the jax distributed system... INFO:2026-04-25 15:14:27,310:jax._src.distributed:140: Starting JAX distributed service on [::]:8482 I0425 15:14:27.310603 138956914530112 distributed.py:140] Starting JAX distributed service on [::]:8482 INFO:2026-04-25 15:14:27,313:jax._src.distributed:157: Connecting to JAX distributed service on mt-05-fp8-vyrqd-slice-job-0-0.mt-05-fp8-vyrqd:8482 I0425 15:14:27.313007 138956914530112 distributed.py:157] Connecting to JAX distributed service on mt-05-fp8-vyrqd-slice-job-0-0.mt-05-fp8-vyrqd:8482 I0425 15:14:28.433000 138956914530112 max_utils.py:284] Jax distributed system initialized! I0425 15:14:34.275407 138956914530112 max_utils.py:800] System Information: Jax Version: 0.8.1 I0425 15:14:34.275510 138956914530112 max_utils.py:801] System Information: Jaxlib Version: 0.8.1 I0425 15:14:34.275550 138956914530112 max_utils.py:802] System Information: Jax Backend: PJRT C API TFRT TPU v6 lite Built on Nov 12 2025 14:16:36 (1762985796) cl/831091709 I0425 15:14:34.275584 138956914530112 train_utils.py:377] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0425 15:14:34.899965 138956914530112 maxtext_utils.py:1631] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0425 15:14:34.900559 138956914530112 maxtext_utils.py:1631] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0425 15:14:34.900761 138956914530112 checkpointing.py:688] Setting up checkpoint logger... I0425 15:14:34.900812 138956914530112 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True I0425 15:14:34.900855 138956914530112 pytree_checkpoint_handler.py:589] save_device_host_concurrent_bytes=None I0425 15:14:34.901196 138956914530112 base_pytree_checkpoint_handler.py:415] 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 0x7e60e2378fe0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0425 15:14:37.809163 138956914530112 checkpointing.py:266] Enabling policy for fixed interval checkpointing. I0425 15:14:37.809504 138956914530112 checkpoint_manager.py:709] [process=5][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7e4e6bd759d0>}, handler_registry=None I0425 15:14:37.809750 138956914530112 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7e4e6bd759d0>` 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 15:14:37.809799 138956914530112 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7e4e6bd7a870>` 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 15:14:37.809835 138956914530112 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 0x7e4e6bd759d0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7e4e6bd759d0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7e4e6bd7a870>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7e4e6bd7a870>}). I0425 15:14:37.810336 138956914530112 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.33 I0425 15:14:37.810414 138956914530112 async_checkpointer.py:177] [process=5][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7e4e6b4e0180> timeout: 600 secs and primary_host=0 for async checkpoint writes I0425 15:14:38.903812 138956914530112 checkpoint_manager.py:1818] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_05_fp8/checkpoints I0425 15:14:38.914889 138956914530112 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_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_05_fp8/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7e4e6bd7aae0> I0425 15:14:38.915027 138956914530112 checkpointing.py:302] Checkpoint manager created! I0425 15:14:40.022485 138956914530112 nnx_wrappers.py:455] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0425 15:14:40.022592 138956914530112 nnx_wrappers.py:455] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 15:14:40.415079 138956914530112 attentions.py:1084] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0425 15:14:40.415183 138956914530112 attentions.py:1084] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 15:14:40.431337 138956914530112 attentions.py:1085] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0425 15:14:40.431397 138956914530112 attentions.py:1085] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 15:14:40.491148 138956914530112 attentions.py:1150] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0425 15:14:40.491235 138956914530112 attentions.py:1150] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 15:14:40.507472 138956914530112 attentions.py:1151] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0425 15:14:40.507534 138956914530112 attentions.py:1151] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 15:14:40.523703 138956914530112 attentions.py:1152] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0425 15:14:40.523760 138956914530112 attentions.py:1152] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 15:14:40.553329 138956914530112 attentions.py:1193] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0425 15:14:40.553432 138956914530112 attentions.py:1193] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 15:14:40.614001 138956914530112 linears.py:541] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0425 15:14:40.614092 138956914530112 linears.py:541] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0425 15:14:41.081171 138956914530112 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint I0425 15:14:41.081287 138956914530112 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0425 15:14:43.135389 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0425 15:14:43.135513 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0425 15:14:43.135562 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0425 15:14:43.135602 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0425 15:14:43.135638 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0425 15:14:43.135688 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0425 15:14:43.135723 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0425 15:14:43.135755 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0425 15:14:43.135785 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0425 15:14:43.135815 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0425 15:14:43.135846 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0425 15:14:43.135875 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0425 15:14:43.135906 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0425 15:14:43.135936 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0425 15:14:43.135966 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0425 15:14:43.135994 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0425 15:14:43.136024 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0425 15:14:43.136053 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0425 15:14:43.136081 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0425 15:14:43.136108 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0425 15:14:43.136135 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0425 15:14:43.136162 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0425 15:14:43.136189 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0425 15:14:43.136216 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0425 15:14:43.136243 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0425 15:14:43.136277 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0425 15:14:43.136306 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0425 15:14:43.136336 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0425 15:14:43.136363 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0425 15:14:43.136390 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0425 15:14:43.136416 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0425 15:14:43.136443 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0425 15:14:43.136470 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0425 15:14:43.136496 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0425 15:14:43.136523 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0425 15:14:43.136549 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0425 15:14:43.136575 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0425 15:14:43.136603 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0425 15:14:43.136629 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0425 15:14:43.136680 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0425 15:14:43.136711 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/output_grad_amax_history Shape: float32[16,1024] Logical: PartitionSpec() Physical: () I0425 15:14:43.136739 138956914530112 maxtext_utils.py:1740] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: PartitionSpec() Physical: () I0425 15:14:43.136790 138956914530112 maxtext_utils.py:1740] params/params/decoder/decoder_norm/scale Shape: float32[2048] Logical: PartitionSpec('norm',) Physical: (None,) I0425 15:14:43.136845 138956914530112 maxtext_utils.py:1740] params/params/decoder/layers/mlp/wi_0/kernel Shape: float32[2048,16,7168] Logical: PartitionSpec('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0425 15:14:43.136885 138956914530112 maxtext_utils.py:1740] params/params/decoder/layers/mlp/wi_1/kernel Shape: float32[2048,16,7168] Logical: PartitionSpec('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0425 15:14:43.136934 138956914530112 maxtext_utils.py:1740] params/params/decoder/layers/mlp/wo/kernel Shape: float32[7168,16,2048] Logical: PartitionSpec('mlp', 'layers', 'embed') Physical: (None, None, 'fsdp') I0425 15:14:43.136982 138956914530112 maxtext_utils.py:1740] params/params/decoder/layers/post_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: PartitionSpec('norm', 'layers') Physical: (None, None) I0425 15:14:43.137019 138956914530112 maxtext_utils.py:1740] params/params/decoder/layers/pre_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: PartitionSpec('norm', 'layers') Physical: (None, None) I0425 15:14:43.137069 138956914530112 maxtext_utils.py:1740] params/params/decoder/layers/self_attention/key/kernel Shape: float32[2048,16,16,128] Logical: PartitionSpec('embed', 'layers', 'kv_heads', 'kv_head_dim') Physical: ('fsdp', None, None, None) I0425 15:14:43.137119 138956914530112 maxtext_utils.py:1740] params/params/decoder/layers/self_attention/out/kernel Shape: float32[16,16,128,2048] Logical: PartitionSpec('heads', 'layers', 'kv', 'embed') Physical: (None, None, None, 'fsdp') I0425 15:14:43.137156 138956914530112 maxtext_utils.py:1740] params/params/decoder/layers/self_attention/query/kernel Shape: float32[2048,16,16,128] Logical: PartitionSpec('embed', 'layers', 'q_heads', 'kv') Physical: ('fsdp', None, None, None) I0425 15:14:43.137192 138956914530112 maxtext_utils.py:1740] params/params/decoder/layers/self_attention/value/kernel Shape: float32[2048,16,16,128] Logical: PartitionSpec('embed', 'layers', 'kv_heads', 'kv_head_dim') Physical: ('fsdp', None, None, None) I0425 15:14:43.137239 138956914530112 maxtext_utils.py:1740] params/params/decoder/logits_dense/kernel Shape: float32[2048,32000] Logical: PartitionSpec('embed', 'vocab') Physical: ('fsdp', None) I0425 15:14:43.137290 138956914530112 maxtext_utils.py:1740] params/params/token_embedder/embedding Shape: float32[32000,2048] Logical: PartitionSpec('vocab', 'embed') Physical: (None, 'fsdp') I0425 15:14:44.926423 138956914530112 train.py:158] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0425 15:14:44.926519 138956914530112 train.py:158] train/xent Physical: float32[32,2048]............................................ ('fsdp', None). I0425 15:14:44.942373 138956914530112 train.py:165] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0425 15:14:44.942436 138956914530112 train.py:165] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None). I0425 15:14:58.355632 138956914530112 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. I0425 15:14:58.356684 138956914530112 metric_logger.py:289] number parameters: 1.105 billion I0425 15:15:12.846416 138956914530112 checkpointing.py:794] Waiting for step 0 to finish before checkpoint... I0425 15:15:13.013220 138956914530112 checkpointing.py:798] Waited 0.16678428649902344 seconds for step 0 to finish before starting checkpointing. I0425 15:15:13.016000 138956914530112 checkpoint_manager.py:2013] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0425 15:15:13.017909 138956914530112 checkpoint_manager.py:1518] [process=5] Saving checkpoint at step 0 I0425 15:15:13.021117 138956914530112 async_checkpointer.py:452] [process=5] Started async saving checkpoint to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_05_fp8/checkpoints/0. I0425 15:15:13.619620 138956914530112 signaling_client.py:364] Using JaxDistributedSignalingClient I0425 15:15:13.620719 138956914530112 jax_array_handlers.py:358] Scheduling D2H of 81 prioritized jax.Array. I0425 15:15:13.620840 138956914530112 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 15:15:13.984089 138956914530112 base_pytree_checkpoint_handler.py:153] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.364585s I0425 15:15:13.984265 138956914530112 base_pytree_checkpoint_handler.py:129] [process=5] /jax/checkpoint/write/blocking_gbytes_per_sec: 2.382 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.6476328372955322 s) (per-host) I0425 15:15:13.984316 138956914530112 base_pytree_checkpoint_handler.py:737] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.647696s (batch_requests_ready=0.277736s, total_serialization_initiated=0.369888s, others=0.000072s) I0425 15:15:13.984425 138956914530112 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.651814s (all_items=0.000021s, per_item={'items': '0.00002050'}, temp_paths=0.651794) I0425 15:15:13.985357 138833609881344 async_checkpointer.py:79] [process=5][thread=async_save] Background save thread started. I0425 15:15:13.985484 138956914530112 async_checkpointer.py:561] Finished blocking save. Time taken: 0.967507s. Continuing background save to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_05_fp8/checkpoints/0. I0425 15:15:14.134589 138956914530112 checkpoint_manager.py:1566] [process=5][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0425 15:15:14.134997 138831428826880 async_checkpointer.py:265] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0425 15:15:14.135161 138956914530112 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_05_fp8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777130113.0159802, 'wait_for_prev_duration_secs': 6.747245788574219e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777130113.0179484, 'checkpointer_blocking_duration_secs': 0.967731237411499, 'get_old_steps_start_time': 1777130113.9856992, 'get_old_steps_duration_secs': 2.47955322265625e-05, 'checkpoint_manager_blocking_start_time': 1777130113.0140688, 'checkpoint_manager_blocking_duration_secs': 1.121051549911499} I0425 15:15:14.135287 138956914530112 checkpointing.py:409] Started an asynchronous checkpoint save for step 0 I0425 15:15:14.135343 138956914530112 max_utils.py:750] Memstats: After params initialized: I0425 15:15:14.135402 138956914530112 max_utils.py:756] Using (GB) 0.45 / 31.25 (1.440000%) on TPU_18(process=5,(2,4,0,0)) I0425 15:15:14.135441 138956914530112 max_utils.py:756] Using (GB) 0.45 / 31.25 (1.440000%) on TPU_19(process=5,(3,4,0,0)) I0425 15:15:14.135468 138956914530112 max_utils.py:756] Using (GB) 0.45 / 31.25 (1.440000%) on TPU_22(process=5,(2,5,0,0)) I0425 15:15:14.135494 138956914530112 max_utils.py:756] Using (GB) 0.45 / 31.25 (1.440000%) on TPU_23(process=5,(3,5,0,0)) I0425 15:15:14.405003 138956914530112 metric_logger.py:185] completed step: 0, seconds: 14.490, TFLOP/s/device: 0.938, Tokens/s/device: 141.343, total_weights: 65536, loss: 10.874 I0425 15:15:14.588383 138956914530112 metric_logger.py:185] completed step: 1, seconds: 1.557, TFLOP/s/device: 8.728, Tokens/s/device: 1315.632, total_weights: 65536, loss: 10.874 I0425 15:15:15.010091 138956914530112 metric_logger.py:185] completed step: 2, seconds: 0.026, TFLOP/s/device: 523.589, Tokens/s/device: 78921.002, total_weights: 65536, loss: 10.816 I0425 15:15:15.168308 138956914530112 metric_logger.py:185] completed step: 3, seconds: 0.422, TFLOP/s/device: 32.172, Tokens/s/device: 4849.357, total_weights: 65536, loss: 10.431 I0425 15:15:15.485711 138956914530112 metric_logger.py:185] completed step: 4, seconds: 0.164, TFLOP/s/device: 83.078, Tokens/s/device: 12522.471, total_weights: 65536, loss: 9.992 I0425 15:15:15.491941 138956914530112 metric_logger.py:185] completed step: 5, seconds: 0.158, TFLOP/s/device: 85.984, Tokens/s/device: 12960.385, total_weights: 65536, loss: 9.549 I0425 15:15:35.568160 138956914530112 metric_logger.py:185] completed step: 6, seconds: 0.318, TFLOP/s/device: 42.730, Tokens/s/device: 6440.717, total_weights: 65536, loss: 9.111 I0425 15:15:35.726531 138956914530112 metric_logger.py:185] completed step: 7, seconds: 19.919, TFLOP/s/device: 0.682, Tokens/s/device: 102.815, total_weights: 65536, loss: 8.685 I0425 15:15:35.884703 138956914530112 metric_logger.py:185] completed step: 8, seconds: 0.163, TFLOP/s/device: 83.218, Tokens/s/device: 12543.486, total_weights: 65536, loss: 8.281 I0425 15:15:35.889688 138956914530112 checkpointing.py:794] Waiting for step 10 to finish before checkpoint... I0425 15:15:36.201147 138956914530112 checkpointing.py:798] Waited 0.31142425537109375 seconds for step 10 to finish before starting checkpointing. I0425 15:15:36.203762 138956914530112 checkpoint_manager.py:2024] [process=5][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0425 15:15:36.678382 2610 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0425 15:15:38.793344 138834096396032 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 81 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_05_fp8/checkpoints/0/items/array_metadatas/process_5 I0425 15:15:53.499108 138833609881344 base_pytree_checkpoint_handler.py:129] [process=5] /jax/checkpoint/write/gbytes_per_sec: 39.334 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 40.162426710128784 s) (per-host) I0425 15:15:53.499228 138833609881344 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 39.513663s. I0425 15:16:01.078222 138833609881344 async_checkpointer.py:144] [process=5][thread=async_save] Background save thread done. Time taken: 47.092641s. I0425 15:16:01.078533 138831428826880 async_checkpointer.py:273] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0425 15:16:01.078682 138831428826880 async_checkpointer.py:283] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0425 15:16:01.078734 138831428826880 checkpoint_manager.py:2133] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0425 15:16:01.080138 138831428826880 checkpoint_manager.py:2142] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0425 15:16:01.080313 138956914530112 checkpoint_manager.py:2036] [process=5][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0. W0425 15:16:01.080444 138956914530112 checkpoint_manager.py:1458] Waiting for previous save to complete took 24.876688 seconds. If this number is high, consider checkpointing less frequently. I0425 15:16:01.082438 138956914530112 checkpoint_manager.py:1518] [process=5] Saving checkpoint at step 10 I0425 15:16:01.085878 138956914530112 async_checkpointer.py:452] [process=5] Started async saving checkpoint to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_05_fp8/checkpoints/10. I0425 15:16:01.613861 138956914530112 jax_array_handlers.py:358] Scheduling D2H of 81 prioritized jax.Array. I0425 15:16:01.613963 138956914530112 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 15:16:01.671529 138956914530112 base_pytree_checkpoint_handler.py:153] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.058653s I0425 15:16:01.671711 138956914530112 base_pytree_checkpoint_handler.py:129] [process=5] /jax/checkpoint/write/blocking_gbytes_per_sec: 4.942 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.31218814849853516 s) (per-host) I0425 15:16:01.671766 138956914530112 base_pytree_checkpoint_handler.py:737] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.312254s (batch_requests_ready=0.250069s, total_serialization_initiated=0.062112s, others=0.000073s) I0425 15:16:01.671870 138956914530112 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.316143s (all_items=0.000015s, per_item={'items': '0.00001550'}, temp_paths=0.316127) I0425 15:16:01.672712 138831957305088 async_checkpointer.py:79] [process=5][thread=async_save] Background save thread started. I0425 15:16:01.672880 138956914530112 async_checkpointer.py:561] Finished blocking save. Time taken: 0.590370s. Continuing background save to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_05_fp8/checkpoints/10. I0425 15:16:02.111637 138956914530112 checkpoint_manager.py:1566] [process=5][thread=MainThread][step=10] Starting CheckpointManager Save Finalize thread=save_finalize I0425 15:16:02.112107 138831428826880 async_checkpointer.py:265] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0425 15:16:02.112294 138956914530112 standard_logger.py:34] {'step': 10, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_05_fp8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777130136.2037332, 'wait_for_prev_duration_secs': 24.87668776512146, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777130161.0824773, 'checkpointer_blocking_duration_secs': 0.5905101299285889, 'get_old_steps_start_time': 1777130161.6730046, 'get_old_steps_duration_secs': 2.6464462280273438e-05, 'checkpoint_manager_blocking_start_time': 1777130136.2020557, 'checkpoint_manager_blocking_duration_secs': 25.910202026367188} I0425 15:16:02.112413 138956914530112 checkpointing.py:409] Started an asynchronous checkpoint save for step 10 I0425 15:16:02.112870 138956914530112 metric_logger.py:185] completed step: 9, seconds: 0.158, TFLOP/s/device: 86.046, Tokens/s/device: 12969.741, total_weights: 65536, loss: 7.908 I0425 15:16:02.119641 138956914530112 metric_logger.py:185] completed step: 10, seconds: 0.158, TFLOP/s/device: 85.973, Tokens/s/device: 12958.827, total_weights: 65536, loss: 7.568 I0425 15:16:02.277332 138956914530112 metric_logger.py:185] completed step: 11, seconds: 26.228, TFLOP/s/device: 0.518, Tokens/s/device: 78.084, total_weights: 65536, loss: 7.288 I0425 15:16:02.435523 138956914530112 metric_logger.py:185] completed step: 12, seconds: 0.006, TFLOP/s/device: 2430.613, Tokens/s/device: 366368.515, total_weights: 65536, loss: 7.032 I0425 15:16:02.593778 138956914530112 metric_logger.py:185] completed step: 13, seconds: 0.159, TFLOP/s/device: 85.504, Tokens/s/device: 12888.123, total_weights: 65536, loss: 6.815 I0425 15:16:02.751893 138956914530112 metric_logger.py:185] completed step: 14, seconds: 0.158, TFLOP/s/device: 85.797, Tokens/s/device: 12932.232, total_weights: 65536, loss: 6.635 I0425 15:16:02.910072 138956914530112 metric_logger.py:185] completed step: 15, seconds: 0.158, TFLOP/s/device: 85.940, Tokens/s/device: 12953.745, total_weights: 65536, loss: 6.492 I0425 15:16:03.068120 138956914530112 metric_logger.py:185] completed step: 16, seconds: 0.158, TFLOP/s/device: 85.933, Tokens/s/device: 12952.762, total_weights: 65536, loss: 6.380 I0425 15:16:03.226390 138956914530112 metric_logger.py:185] completed step: 17, seconds: 0.159, TFLOP/s/device: 85.613, Tokens/s/device: 12904.527, total_weights: 65536, loss: 6.293 I0425 15:16:03.384541 138956914530112 metric_logger.py:185] completed step: 18, seconds: 0.158, TFLOP/s/device: 86.267, Tokens/s/device: 13003.092, total_weights: 65536, loss: 6.223 I0425 15:16:03.542484 138956914530112 checkpointing.py:794] Waiting for step 19 to finish before checkpoint... I0425 15:16:03.543428 138956914530112 checkpointing.py:798] Waited 0.0009639263153076172 seconds for step 19 to finish before starting checkpointing. I0425 15:16:03.545514 138956914530112 checkpoint_manager.py:2024] [process=5][thread=MainThread][step=10][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0425 15:16:07.360924 138831462397696 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 81 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_05_fp8/checkpoints/10/items/array_metadatas/process_5 I0425 15:16:43.697669 138831957305088 base_pytree_checkpoint_handler.py:129] [process=5] /jax/checkpoint/write/gbytes_per_sec: 37.313 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.33808994293213 s) (per-host) I0425 15:16:43.697789 138831957305088 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.024959s. I0425 15:16:50.256399 138831957305088 async_checkpointer.py:144] [process=5][thread=async_save] Background save thread done. Time taken: 48.583552s. I0425 15:16:50.256715 138831428826880 async_checkpointer.py:273] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0425 15:16:50.256829 138831428826880 async_checkpointer.py:283] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0425 15:16:50.256878 138831428826880 checkpoint_manager.py:2133] [process=5][thread=save_finalize][step=10] CheckpointManager Save Finalize is syncing with other hosts... I0425 15:16:50.258393 138831428826880 checkpoint_manager.py:2142] [process=5][thread=save_finalize][step=10] CheckpointManager Save Finalize is done on all hosts. I0425 15:16:50.258518 138956914530112 checkpoint_manager.py:2036] [process=5][thread=MainThread][step=10][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=10. W0425 15:16:50.258598 138956914530112 checkpoint_manager.py:1458] Waiting for previous save to complete took 46.713097 seconds. If this number is high, consider checkpointing less frequently. I0425 15:16:50.260156 138956914530112 checkpoint_manager.py:1518] [process=5] Saving checkpoint at step 19 I0425 15:16:50.263824 138956914530112 async_checkpointer.py:452] [process=5] Started async saving checkpoint to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_05_fp8/checkpoints/19. I0425 15:16:51.203862 138956914530112 jax_array_handlers.py:358] Scheduling D2H of 81 prioritized jax.Array. I0425 15:16:51.203964 138956914530112 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 15:16:51.260159 138956914530112 base_pytree_checkpoint_handler.py:153] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.057338s I0425 15:16:51.260328 138956914530112 base_pytree_checkpoint_handler.py:129] [process=5] /jax/checkpoint/write/blocking_gbytes_per_sec: 4.530 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.34053587913513184 s) (per-host) I0425 15:16:51.260378 138956914530112 base_pytree_checkpoint_handler.py:737] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.340597s (batch_requests_ready=0.279794s, total_serialization_initiated=0.060736s, others=0.000067s) I0425 15:16:51.260483 138956914530112 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.344701s (all_items=0.000010s, per_item={'items': '0.00001049'}, temp_paths=0.344691) I0425 15:16:51.261326 138831462397696 async_checkpointer.py:79] [process=5][thread=async_save] Background save thread started. I0425 15:16:51.261450 138956914530112 async_checkpointer.py:561] Finished blocking save. Time taken: 1.001229s. Continuing background save to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_05_fp8/checkpoints/19. I0425 15:16:51.379065 138956914530112 checkpoint_manager.py:1566] [process=5][thread=MainThread][step=19] Starting CheckpointManager Save Finalize thread=save_finalize I0425 15:16:51.379430 138831428826880 async_checkpointer.py:265] [process=5][thread=save_finalize] Waiting for background save thread=async_save. I0425 15:16:51.379598 138956914530112 standard_logger.py:34] {'step': 19, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_05_fp8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777130163.5454876, 'wait_for_prev_duration_secs': 46.71309733390808, 'time_between_consecutive_saves_sec': 2.4653124809265137, 'checkpointer_blocking_start_time': 1777130210.260195, 'checkpointer_blocking_duration_secs': 1.0014231204986572, 'get_old_steps_start_time': 1777130211.2616322, 'get_old_steps_duration_secs': 3.337860107421875e-05, 'checkpoint_manager_blocking_start_time': 1777130163.5437198, 'checkpoint_manager_blocking_duration_secs': 47.83584523200989} I0425 15:16:51.379721 138956914530112 checkpointing.py:409] Started an asynchronous checkpoint save for step 19 I0425 15:16:51.379766 138956914530112 checkpoint_manager.py:2024] [process=5][thread=MainThread][step=19][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0425 15:16:55.998197 138831454004992 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 81 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_set_defaults_true_20260425_150412/linen_xpk_feat_nnx_set_defaults_true_20260425_150412_05_fp8/checkpoints/19/items/array_metadatas/process_5 I0425 15:17:33.045205 138831462397696 base_pytree_checkpoint_handler.py:129] [process=5] /jax/checkpoint/write/gbytes_per_sec: 37.501 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.12537145614624 s) (per-host) I0425 15:17:33.045323 138831462397696 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.783793s. I0425 15:17:38.706441 138831462397696 async_checkpointer.py:144] [process=5][thread=async_save] Background save thread done. Time taken: 47.444896s. I0425 15:17:38.706742 138831428826880 async_checkpointer.py:273] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save. I0425 15:17:38.706861 138831428826880 async_checkpointer.py:283] [process=5][thread=save_finalize] No errors found in background save thread=async_save. I0425 15:17:38.706908 138831428826880 checkpoint_manager.py:2133] [process=5][thread=save_finalize][step=19] CheckpointManager Save Finalize is syncing with other hosts... I0425 15:17:38.708360 138831428826880 checkpoint_manager.py:2142] [process=5][thread=save_finalize][step=19] CheckpointManager Save Finalize is done on all hosts. I0425 15:17:38.708524 138956914530112 checkpoint_manager.py:2036] [process=5][thread=MainThread][step=19][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=19. I0425 15:17:38.708674 138956914530112 checkpoint_manager.py:2013] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0425 15:17:38.709325 138956914530112 metric_logger.py:185] completed step: 19, seconds: 0.158, TFLOP/s/device: 85.813, Tokens/s/device: 12934.682, total_weights: 65536, loss: 6.167 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops XPK End: Sat Apr 25 15:17:49 UTC 2026 EXIT_CODE=0