main (b117f50cf) vs main (59e0f1759)| Metric | main b117f50cf | main 59e0f1759 | Diff (main − main) |
|---|---|---|---|
| Parameters | 1.105 billion | 1.105 billion | — |
| Final loss | 6.1670 | 6.1670 | 0 |
| TFLOP/s | 86.015 | 85.760 | -0.255 |
| Tok/s | 12965.1 | 12926.7 | -38.463 |
| Avg s/step | 1.649 | 1.599 | -0.05 |
| Memory % | 1.44 | 1.44 | 0 |
| JAX | 0.9.2 | 0.9.2 | — |
Diff = branch value − main value. Green = branch improved. Red = branch regressed.
XPK Start: Fri Apr 24 07:16:13 UTC 2026 PyTorch was not found. Models won't be available and only tokenizers, configuration and file/data utilities can be used. `rope_parameters`'s factor field must be a float >= 1, got 40 `rope_parameters`'s beta_fast field must be a float, got 32 `rope_parameters`'s beta_slow field must be a float, got 1 DeepseekV32Config got `key=rope_scaling` in kwargs but hasn't set it as attribute. For RoPE standardization you need to set `self.rope_parameters` in model's config. 2026-04-24 07:16:38.906120: E external/local_xla/xla/stream_executor/cuda/cuda_platform.cc:51] failed call to cuInit: INTERNAL: CUDA error: Failed call to cuInit: UNKNOWN ERROR (303) I0424 07:16:39.109947 135241581811520 max_utils.py:273] Attempting to initialize the jax distributed system... I0424 07:16:48.150578 135241581811520 distributed.py:149] Starting JAX distributed service on [::]:8482 I0424 07:16:48.153087 135241581811520 distributed.py:172] Connecting to JAX distributed service on mt-05-fp8-amnlf-slice-job-0-0.mt-05-fp8-amnlf:8482 I0424 07:16:49.220168 135241581811520 max_utils.py:284] Jax distributed system initialized! I0424 07:16:55.308476 135241581811520 max_utils.py:800] System Information: Jax Version: 0.9.2 I0424 07:16:55.308587 135241581811520 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0424 07:16:55.308628 135241581811520 max_utils.py:802] System Information: Jax Backend: PJRT C API TFRT TPU v6 lite Built on Mar 4 2026 11:32:08 (1772652728) cl/878335365 I0424 07:16:55.308665 135241581811520 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0424 07:16:56.013766 135241581811520 maxtext_utils.py:1604] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1) I0424 07:16:56.014056 135241581811520 checkpointing.py:677] Setting up checkpoint logger... I0424 07:16:56.014136 135241581811520 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True I0424 07:16:56.014193 135241581811520 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0424 07:16:56.014539 135241581811520 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 0x7affaab51cd0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0424 07:16:58.872215 135241581811520 checkpointing.py:265] Enabling policy for fixed interval checkpointing. I0424 07:16:58.872453 135241581811520 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 0x7aeba0680770>}, handler_registry=None I0424 07:16:58.872694 135241581811520 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7aeba0680770>` for item "items" and save args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>` to `_handler_registry`. I0424 07:16:58.872743 135241581811520 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7aeba06819d0>` for item "metrics" and save args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>` to `_handler_registry`. I0424 07:16:58.872780 135241581811520 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 0x7aeba0680770>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7aeba0680770>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7aeba06819d0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7aeba06819d0>}). I0424 07:16:58.873124 135241581811520 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0424 07:16:58.873197 135241581811520 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7aeb70271940> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0424 07:16:59.954445 135241581811520 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_05_fp8/checkpoints I0424 07:17:00.042321 135241581811520 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_20260424_070227/linen_xpk_main_20260424_070227_05_fp8/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7aeba067ec00> I0424 07:17:00.042496 135241581811520 checkpointing.py:301] Checkpoint manager created! I0424 07:17:01.127010 135241581811520 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0424 07:17:01.127144 135241581811520 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 07:17:01.514118 135241581811520 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch_attn', 'activation_length_attn', 'activation_embed_attn'). I0424 07:17:01.514217 135241581811520 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 07:17:01.530772 135241581811520 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch_attn', 'activation_length_attn', 'activation_embed_attn'). I0424 07:17:01.530834 135241581811520 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 07:17:01.583370 135241581811520 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 07:17:01.583455 135241581811520 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 07:17:01.600032 135241581811520 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 07:17:01.600108 135241581811520 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 07:17:01.616657 135241581811520 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 07:17:01.616721 135241581811520 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 07:17:01.641880 135241581811520 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch_attn', 'activation_length_attn', 'activation_heads', 'activation_kv'). I0424 07:17:01.641951 135241581811520 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 07:17:01.693524 135241581811520 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0424 07:17:01.693605 135241581811520 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0424 07:17:02.130938 135241581811520 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint I0424 07:17:02.131054 135241581811520 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0424 07:17:04.067434 135241581811520 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: () I0424 07:17:04.067562 135241581811520 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: P() Physical: () I0424 07:17:04.067613 135241581811520 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: () I0424 07:17:04.067655 135241581811520 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_0/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: P() Physical: () I0424 07:17:04.067691 135241581811520 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: () I0424 07:17:04.067724 135241581811520 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: () I0424 07:17:04.067755 135241581811520 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: () I0424 07:17:04.067786 135241581811520 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: P() Physical: () I0424 07:17:04.067817 135241581811520 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: () I0424 07:17:04.067847 135241581811520 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wi_1/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: P() Physical: () I0424 07:17:04.067876 135241581811520 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: () I0424 07:17:04.067904 135241581811520 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: () I0424 07:17:04.067937 135241581811520 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/input_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0424 07:17:04.067975 135241581811520 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: P() Physical: () I0424 07:17:04.068006 135241581811520 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/kernel_amax_history Shape: float32[16,1024] Logical: P() Physical: () I0424 07:17:04.068034 135241581811520 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: P() Physical: () I0424 07:17:04.068062 135241581811520 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: () I0424 07:17:04.068090 135241581811520 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/mlp/wo/Fp8DirectDotGeneralOp_0/output_grad_scale Shape: float32[16,1] Logical: P() Physical: () I0424 07:17:04.068133 135241581811520 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: () I0424 07:17:04.068163 135241581811520 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: P() Physical: () I0424 07:17:04.068192 135241581811520 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: () I0424 07:17:04.068219 135241581811520 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/key/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: P() Physical: () I0424 07:17:04.068250 135241581811520 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: () I0424 07:17:04.068278 135241581811520 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: () I0424 07:17:04.068304 135241581811520 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: () I0424 07:17:04.068330 135241581811520 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: P() Physical: () I0424 07:17:04.068356 135241581811520 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: () I0424 07:17:04.068383 135241581811520 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/out/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: P() Physical: () I0424 07:17:04.068409 135241581811520 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: () I0424 07:17:04.068435 135241581811520 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: () I0424 07:17:04.068462 135241581811520 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: () I0424 07:17:04.068487 135241581811520 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: P() Physical: () I0424 07:17:04.068515 135241581811520 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: () I0424 07:17:04.068541 135241581811520 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/query/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: P() Physical: () I0424 07:17:04.068567 135241581811520 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: () I0424 07:17:04.068594 135241581811520 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: () I0424 07:17:04.068619 135241581811520 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: () I0424 07:17:04.068645 135241581811520 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/input_scale Shape: float32[16,1] Logical: P() Physical: () I0424 07:17:04.068670 135241581811520 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: () I0424 07:17:04.068696 135241581811520 maxtext_utils.py:1707] params/_overwrite_with_gradient/decoder/layers/self_attention/value/Fp8DirectDotGeneralOp_0/kernel_scale Shape: float32[16,1] Logical: P() Physical: () I0424 07:17:04.068723 135241581811520 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: () I0424 07:17:04.068750 135241581811520 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: () I0424 07:17:04.068801 135241581811520 maxtext_utils.py:1707] params/params/decoder/decoder_norm/scale Shape: float32[2048] Logical: P('norm',) Physical: (None,) I0424 07:17:04.068854 135241581811520 maxtext_utils.py:1707] params/params/decoder/layers/mlp/wi_0/kernel Shape: float32[2048,16,7168] Logical: P('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0424 07:17:04.068892 135241581811520 maxtext_utils.py:1707] params/params/decoder/layers/mlp/wi_1/kernel Shape: float32[2048,16,7168] Logical: P('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0424 07:17:04.068939 135241581811520 maxtext_utils.py:1707] params/params/decoder/layers/mlp/wo/kernel Shape: float32[7168,16,2048] Logical: P('mlp', 'layers', 'embed') Physical: (None, None, 'fsdp') I0424 07:17:04.068984 135241581811520 maxtext_utils.py:1707] params/params/decoder/layers/post_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: P('norm', 'layers') Physical: (None, None) I0424 07:17:04.069017 135241581811520 maxtext_utils.py:1707] params/params/decoder/layers/pre_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: P('norm', 'layers') Physical: (None, None) I0424 07:17:04.069067 135241581811520 maxtext_utils.py:1707] params/params/decoder/layers/self_attention/key/kernel Shape: float32[2048,16,16,128] Logical: P('embed', 'layers', 'kv_heads', 'kv_head_dim') Physical: ('fsdp', None, None, None) I0424 07:17:04.069157 135241581811520 maxtext_utils.py:1707] params/params/decoder/layers/self_attention/out/kernel Shape: float32[16,16,128,2048] Logical: P('heads', 'layers', 'kv', 'embed') Physical: (None, None, None, 'fsdp') I0424 07:17:04.069201 135241581811520 maxtext_utils.py:1707] params/params/decoder/layers/self_attention/query/kernel Shape: float32[2048,16,16,128] Logical: P('embed', 'layers', 'q_heads', 'kv') Physical: ('fsdp', None, None, None) I0424 07:17:04.069240 135241581811520 maxtext_utils.py:1707] params/params/decoder/layers/self_attention/value/kernel Shape: float32[2048,16,16,128] Logical: P('embed', 'layers', 'kv_heads', 'kv_head_dim') Physical: ('fsdp', None, None, None) I0424 07:17:04.069286 135241581811520 maxtext_utils.py:1707] params/params/decoder/logits_dense/kernel Shape: float32[2048,32000] Logical: P('embed_vocab', 'vocab') Physical: ('fsdp', None) I0424 07:17:04.069328 135241581811520 maxtext_utils.py:1707] params/params/token_embedder/embedding Shape: float32[32000,2048] Logical: P('vocab', 'embed_vocab') Physical: (None, 'fsdp') I0424 07:17:05.690122 135241581811520 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0424 07:17:05.690218 135241581811520 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None). I0424 07:17:05.706003 135241581811520 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0424 07:17:05.706061 135241581811520 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None). I0424 07:17:19.373075 135241581811520 max_utils.py:791] Total memory size: 1.5 GB, Output size: 0.4 GB, Temp size: 1.1 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB. I0424 07:17:19.373909 135241581811520 metric_logger.py:301] number parameters: 1.105 billion I0424 07:17:34.326419 135241581811520 checkpointing.py:772] Waiting for step 0 to finish before checkpoint... I0424 07:17:34.498445 135241581811520 checkpointing.py:776] Waited 0.17200279235839844 seconds for step 0 to finish before starting checkpointing. I0424 07:17:34.500856 135241581811520 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 07:17:34.502762 135241581811520 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 0 I0424 07:17:34.504157 135241581811520 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_05_fp8/checkpoints/0. I0424 07:17:35.047203 135241581811520 signaling_client.py:364] Using JaxDistributedSignalingClient I0424 07:17:35.048027 135241581811520 jax_array_handlers.py:360] Scheduling D2H of 81 prioritized jax.Array. I0424 07:17:35.048084 135241581811520 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False I0424 07:17:35.461541 135241581811520 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.414474s I0424 07:17:35.461718 135241581811520 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 3.647 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.4229912757873535 s) (per-host) I0424 07:17:35.461777 135241581811520 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.423056s (batch_requests_ready=0.003723s, total_serialization_initiated=0.419260s, others=0.000073s) I0424 07:17:35.461917 135241581811520 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.427153s (all_items=0.000017s, per_item={'items': '0.00001693'}, temp_paths=0.427136) I0424 07:17:35.462728 135241581811520 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.96 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_05_fp8/checkpoints/0. I0424 07:17:35.463014 135112326481664 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 07:37:35.462991 I0424 07:17:35.472735 135241581811520 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0424 07:17:35.473038 135111788836608 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0424 07:17:35.473210 135241581811520 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_05_fp8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777015054.500838, 'wait_for_prev_duration_secs': 6.0558319091796875e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777015054.5028007, 'checkpointer_blocking_duration_secs': 0.960334300994873, 'get_old_steps_start_time': 1777015055.4631612, 'get_old_steps_duration_secs': 2.956390380859375e-05, 'checkpoint_manager_blocking_start_time': 1777015054.4990382, 'checkpoint_manager_blocking_duration_secs': 0.9741344451904297} I0424 07:17:35.473321 135241581811520 checkpointing.py:408] Started an asynchronous checkpoint save for step 0 I0424 07:17:35.473370 135241581811520 max_utils.py:750] Memstats: After params initialized: I0424 07:17:35.473417 135241581811520 max_utils.py:756] Using (GB) 0.45 / 31.25 (1.440000%) on TPU_24(process=6,(0,6,0,0)) I0424 07:17:35.473449 135241581811520 max_utils.py:756] Using (GB) 0.45 / 31.25 (1.440000%) on TPU_25(process=6,(1,6,0,0)) I0424 07:17:35.473476 135241581811520 max_utils.py:756] Using (GB) 0.45 / 31.25 (1.440000%) on TPU_28(process=6,(0,7,0,0)) I0424 07:17:35.473499 135241581811520 max_utils.py:756] Using (GB) 0.45 / 31.25 (1.440000%) on TPU_29(process=6,(1,7,0,0)) I0424 07:17:35.786211 135241581811520 metric_logger.py:196] completed step: 0, seconds: 14.952, TFLOP/s/device: 0.909, Tokens/s/device: 136.968, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52776.805 I0424 07:17:35.984260 135241581811520 metric_logger.py:196] completed step: 1, seconds: 1.458, TFLOP/s/device: 9.321, Tokens/s/device: 1404.939, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52761.840 I0424 07:17:36.413328 135241581811520 metric_logger.py:196] completed step: 2, seconds: 0.041, TFLOP/s/device: 335.046, Tokens/s/device: 50501.812, total_weights: 65536, loss: 10.816, lm_loss: 10.816, perplexity: 49832.398 I0424 07:17:36.571463 135241581811520 metric_logger.py:196] completed step: 3, seconds: 0.429, TFLOP/s/device: 31.673, Tokens/s/device: 4774.126, total_weights: 65536, loss: 10.431, lm_loss: 10.431, perplexity: 33901.820 I0424 07:17:36.890049 135241581811520 metric_logger.py:196] completed step: 4, seconds: 0.165, TFLOP/s/device: 82.576, Tokens/s/device: 12446.821, total_weights: 65536, loss: 9.992, lm_loss: 9.992, perplexity: 21847.639 I0424 07:17:36.896487 135241581811520 metric_logger.py:196] completed step: 5, seconds: 0.158, TFLOP/s/device: 85.973, Tokens/s/device: 12958.745, total_weights: 65536, loss: 9.549, lm_loss: 9.549, perplexity: 14035.006 I0424 07:17:38.228162 2846 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0424 07:17:40.311240 135112304158464 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 81 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_05_fp8/checkpoints/0/items/array_metadatas/process_6 I0424 07:17:55.498757 135112326481664 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 77.212 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 20.460005521774292 s) (per-host) I0424 07:17:55.498865 135112326481664 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 20.035777s. I0424 07:18:01.565980 135241581811520 metric_logger.py:196] completed step: 6, seconds: 0.319, TFLOP/s/device: 42.601, Tokens/s/device: 6421.270, total_weights: 65536, loss: 9.111, lm_loss: 9.111, perplexity: 9058.688 I0424 07:18:01.724355 135241581811520 metric_logger.py:196] completed step: 7, seconds: 24.512, TFLOP/s/device: 0.554, Tokens/s/device: 83.549, total_weights: 65536, loss: 8.685, lm_loss: 8.685, perplexity: 5914.720 I0424 07:18:01.882939 135241581811520 metric_logger.py:196] completed step: 8, seconds: 0.163, TFLOP/s/device: 83.142, Tokens/s/device: 12532.126, total_weights: 65536, loss: 8.281, lm_loss: 8.281, perplexity: 3950.010 I0424 07:18:01.888053 135241581811520 checkpointing.py:772] Waiting for step 10 to finish before checkpoint... I0424 07:18:02.199653 135241581811520 checkpointing.py:776] Waited 0.3115661144256592 seconds for step 10 to finish before starting checkpointing. I0424 07:18:02.202641 135241581811520 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0424 07:18:03.218018 135112326481664 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 27.754913s. I0424 07:18:03.218325 135111788836608 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0424 07:18:03.218441 135111788836608 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0424 07:18:03.218493 135111788836608 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0424 07:18:03.220208 135111788836608 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0424 07:18:03.220378 135241581811520 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. W0424 07:18:03.220516 135241581811520 checkpoint_manager.py:1452] Waiting for previous save to complete took 1.017873 seconds. If this number is high, consider checkpointing less frequently. I0424 07:18:03.222280 135241581811520 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 10 I0424 07:18:03.224312 135241581811520 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_05_fp8/checkpoints/10. I0424 07:18:03.930805 135241581811520 jax_array_handlers.py:360] Scheduling D2H of 81 prioritized jax.Array. I0424 07:18:03.930902 135241581811520 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False I0424 07:18:03.984689 135241581811520 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.054982s I0424 07:18:03.984860 135241581811520 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 25.248 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.06110334396362305 s) (per-host) I0424 07:18:03.984914 135241581811520 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.061166s (batch_requests_ready=0.003020s, total_serialization_initiated=0.058077s, others=0.000069s) I0424 07:18:03.985020 135241581811520 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.065445s (all_items=0.000015s, per_item={'items': '0.00001502'}, temp_paths=0.065430) I0424 07:18:03.985814 135241581811520 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.76 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_05_fp8/checkpoints/10. I0424 07:18:03.986178 135111788836608 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 07:38:03.986140 I0424 07:18:03.988260 135241581811520 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=10] Starting CheckpointManager Save Finalize thread=save_finalize I0424 07:18:03.988488 135110695294720 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0424 07:18:03.988599 135241581811520 standard_logger.py:34] {'step': 10, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_05_fp8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777015082.2026112, 'wait_for_prev_duration_secs': 1.0178725719451904, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777015083.222326, 'checkpointer_blocking_duration_secs': 0.7640020847320557, 'get_old_steps_start_time': 1777015083.9863558, 'get_old_steps_duration_secs': 3.123283386230469e-05, 'checkpoint_manager_blocking_start_time': 1777015082.2005043, 'checkpoint_manager_blocking_duration_secs': 1.7880606651306152} I0424 07:18:03.988771 135241581811520 checkpointing.py:408] Started an asynchronous checkpoint save for step 10 I0424 07:18:03.989463 135241581811520 metric_logger.py:196] completed step: 9, seconds: 0.158, TFLOP/s/device: 85.846, Tokens/s/device: 12939.586, total_weights: 65536, loss: 7.908, lm_loss: 7.908, perplexity: 2720.116 I0424 07:18:03.996210 135241581811520 metric_logger.py:196] completed step: 10, seconds: 0.158, TFLOP/s/device: 85.739, Tokens/s/device: 12923.582, total_weights: 65536, loss: 7.568, lm_loss: 7.568, perplexity: 1936.198 I0424 07:18:04.709203 135241581811520 metric_logger.py:196] completed step: 11, seconds: 2.106, TFLOP/s/device: 6.451, Tokens/s/device: 972.427, total_weights: 65536, loss: 7.288, lm_loss: 7.288, perplexity: 1463.272 I0424 07:18:04.867572 135241581811520 metric_logger.py:196] completed step: 12, seconds: 0.557, TFLOP/s/device: 24.397, Tokens/s/device: 3677.368, total_weights: 65536, loss: 7.032, lm_loss: 7.032, perplexity: 1132.061 I0424 07:18:05.025725 135241581811520 metric_logger.py:196] completed step: 13, seconds: 0.163, TFLOP/s/device: 83.272, Tokens/s/device: 12551.711, total_weights: 65536, loss: 6.815, lm_loss: 6.815, perplexity: 911.031 I0424 07:18:05.184021 135241581811520 metric_logger.py:196] completed step: 14, seconds: 0.158, TFLOP/s/device: 85.893, Tokens/s/device: 12946.702, total_weights: 65536, loss: 6.635, lm_loss: 6.635, perplexity: 761.080 I0424 07:18:05.342390 135241581811520 metric_logger.py:196] completed step: 15, seconds: 0.158, TFLOP/s/device: 85.888, Tokens/s/device: 12946.048, total_weights: 65536, loss: 6.492, lm_loss: 6.492, perplexity: 659.915 I0424 07:18:05.500866 135241581811520 metric_logger.py:196] completed step: 16, seconds: 0.158, TFLOP/s/device: 85.861, Tokens/s/device: 12941.957, total_weights: 65536, loss: 6.380, lm_loss: 6.380, perplexity: 589.948 I0424 07:18:05.658889 135241581811520 metric_logger.py:196] completed step: 17, seconds: 0.158, TFLOP/s/device: 85.724, Tokens/s/device: 12921.217, total_weights: 65536, loss: 6.293, lm_loss: 6.293, perplexity: 540.941 I0424 07:18:05.817164 135241581811520 metric_logger.py:196] completed step: 18, seconds: 0.158, TFLOP/s/device: 85.805, Tokens/s/device: 12933.539, total_weights: 65536, loss: 6.223, lm_loss: 6.223, perplexity: 504.108 I0424 07:18:05.974606 135241581811520 checkpointing.py:772] Waiting for step 19 to finish before checkpoint... I0424 07:18:05.975650 135241581811520 checkpointing.py:776] Waited 0.0010619163513183594 seconds for step 19 to finish before starting checkpointing. I0424 07:18:05.977705 135241581811520 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=10][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0424 07:18:09.560707 135108572989184 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 81 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_05_fp8/checkpoints/10/items/array_metadatas/process_6 I0424 07:18:46.978321 135111788836608 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 36.692 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 43.05452346801758 s) (per-host) I0424 07:18:46.978438 135111788836608 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.992144s. I0424 07:18:56.202762 135111788836608 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 52.216452s. I0424 07:18:56.203009 135110695294720 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0424 07:18:56.203065 135110695294720 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0424 07:18:56.203136 135110695294720 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=10] CheckpointManager Save Finalize is syncing with other hosts... I0424 07:18:56.205470 135110695294720 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=10] CheckpointManager Save Finalize is done on all hosts. I0424 07:18:56.205667 135241581811520 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=10][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=10. W0424 07:18:56.205807 135241581811520 checkpoint_manager.py:1452] Waiting for previous save to complete took 50.228107 seconds. If this number is high, consider checkpointing less frequently. I0424 07:18:56.207977 135241581811520 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 19 I0424 07:18:56.210078 135241581811520 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_05_fp8/checkpoints/19. I0424 07:18:56.492932 135241581811520 jax_array_handlers.py:360] Scheduling D2H of 81 prioritized jax.Array. I0424 07:18:56.493024 135241581811520 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False I0424 07:18:56.546404 135241581811520 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.054349s I0424 07:18:56.546578 135241581811520 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 25.534 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.060419321060180664 s) (per-host) I0424 07:18:56.546629 135241581811520 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.060486s (batch_requests_ready=0.002997s, total_serialization_initiated=0.057418s, others=0.000071s) I0424 07:18:56.546733 135241581811520 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.064603s (all_items=0.000012s, per_item={'items': '0.00001192'}, temp_paths=0.064591) I0424 07:18:56.547446 135241581811520 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.34 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_05_fp8/checkpoints/19. I0424 07:18:56.547727 135110695294720 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-24 07:38:56.547703 I0424 07:18:56.549678 135241581811520 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=19] Starting CheckpointManager Save Finalize thread=save_finalize I0424 07:18:56.549899 135110175168256 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0424 07:18:56.550027 135241581811520 standard_logger.py:34] {'step': 19, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_05_fp8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777015085.977674, 'wait_for_prev_duration_secs': 50.22810745239258, 'time_between_consecutive_saves_sec': 2.757427215576172, 'checkpointer_blocking_start_time': 1777015136.2080166, 'checkpointer_blocking_duration_secs': 0.3398113250732422, 'get_old_steps_start_time': 1777015136.5478475, 'get_old_steps_duration_secs': 2.5272369384765625e-05, 'checkpoint_manager_blocking_start_time': 1777015085.975933, 'checkpoint_manager_blocking_duration_secs': 50.57406497001648} I0424 07:18:56.550189 135241581811520 checkpointing.py:408] Started an asynchronous checkpoint save for step 19 I0424 07:18:56.550232 135241581811520 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=19][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0424 07:19:01.647948 135108572989184 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 81 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_05_fp8/checkpoints/19/items/array_metadatas/process_6 I0424 07:19:38.735715 135110695294720 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 37.391 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.249523401260376 s) (per-host) I0424 07:19:38.735821 135110695294720 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.188017s. I0424 07:19:46.117866 135110695294720 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 49.570046s. I0424 07:19:46.118179 135110175168256 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0424 07:19:46.118307 135110175168256 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0424 07:19:46.118350 135110175168256 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=19] CheckpointManager Save Finalize is syncing with other hosts... I0424 07:19:46.119984 135110175168256 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=19] CheckpointManager Save Finalize is done on all hosts. I0424 07:19:46.120207 135241581811520 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=19][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=19. I0424 07:19:46.120360 135241581811520 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 07:19:46.121354 135241581811520 metric_logger.py:196] completed step: 19, seconds: 0.158, TFLOP/s/device: 86.015, Tokens/s/device: 12965.144, 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: Fri Apr 24 07:19:59 UTC 2026 EXIT_CODE=0
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