code refactor

Former-commit-id: ee3f85aa9677d0aeecb3bc396530d2cd7c50dce5

src/llamafactory/extras/misc.py

@@ -20,6 +20,7 @@ import os
 from typing import TYPE_CHECKING, Tuple, Union
 
 import torch
+import torch.distributed as dist
 import transformers.dynamic_module_utils
 from transformers import InfNanRemoveLogitsProcessor, LogitsProcessorList
 from transformers.dynamic_module_utils import get_relative_imports
@@ -263,3 +264,11 @@ def use_modelscope() -> bool:
 
 def use_openmind() -> bool:
     return os.environ.get("USE_OPENMIND_HUB", "0").lower() in ["true", "1"]
+
+
+def cal_effective_tokens(effective_token_num, epoch, train_runtime) -> int:
+    r"""
+    calculate effective tokens.
+    """
+    result = effective_token_num * epoch / train_runtime
+    return result / dist.get_world_size() if dist.is_initialized() else result