[CI/Build] Avoid CUDA initialization (#8534)

tests/kernels/test_layernorm.py

@@ -3,6 +3,7 @@ import torch
 
 from tests.kernels.utils import opcheck
 from vllm.model_executor.layers.layernorm import RMSNorm
+from vllm.utils import seed_everything
 
 DTYPES = [torch.half, torch.bfloat16, torch.float]
 NUM_TOKENS = [7, 83, 4096]  # Arbitrary values for testing
@@ -30,9 +31,7 @@ def test_rms_norm(
     seed: int,
     device: str,
 ) -> None:
-    torch.random.manual_seed(seed)
-    if torch.cuda.is_available():
-        torch.cuda.manual_seed(seed)
+    seed_everything(seed)
     torch.set_default_device(device)
     layer = RMSNorm(hidden_size).to(dtype=dtype)
     layer.weight.data.normal_(mean=1.0, std=0.1)