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

tests/kernels/test_mamba_ssm.py

@@ -5,6 +5,7 @@ from einops import rearrange, repeat
 
 from vllm.model_executor.layers.mamba.ops.mamba_ssm import (
     selective_scan_fn, selective_state_update)
+from vllm.utils import seed_everything
 
 
 def selective_state_update_ref(state,
@@ -186,7 +187,7 @@ def test_selective_scan(is_variable_B, is_variable_C, varBC_groups, has_D,
         rtolw = max(rtolw, rtol)
         atolw = max(atolw, atol)
     # set seed
-    torch.random.manual_seed(0)
+    seed_everything(0)
     batch_size = 2
     dim = 4
     dstate = 8
@@ -287,7 +288,7 @@ def test_selective_state_update(dim, dstate, has_z, itype):
         if torch.version.hip:
             atol *= 2
     # set seed
-    torch.random.manual_seed(0)
+    seed_everything(0)
     batch_size = 1
     state = torch.randn(batch_size, dim, dstate, dtype=itype, device=device)
     x = torch.randn(batch_size, dim, device=device, dtype=itype)