[Hardware] using current_platform.seed_everything (#9785)

Signed-off-by: wangshuai09 <391746016@qq.com>

vllm/platforms/interface.py

@@ -1,6 +1,8 @@
 import enum
+import random
 from typing import NamedTuple, Optional, Tuple, Union
 
+import numpy as np
 import torch
 
 
@@ -111,6 +113,18 @@ class Platform:
         """
         return torch.inference_mode(mode=True)
 
+    @classmethod
+    def seed_everything(cls, seed: int) -> None:
+        """
+        Set the seed of each random module.
+        `torch.manual_seed` will set seed on all devices.
+
+        Loosely based on: https://github.com/Lightning-AI/pytorch-lightning/blob/2.4.0/src/lightning/fabric/utilities/seed.py#L20
+        """
+        random.seed(seed)
+        np.random.seed(seed)
+        torch.manual_seed(seed)
+
 
 class UnspecifiedPlatform(Platform):
     _enum = PlatformEnum.UNSPECIFIED