updates

models/yolo.py

@@ -27,7 +27,7 @@ class Detect(nn.Module):
             x[i] = x[i].view(bs, self.na, self.no, ny, nx).permute(0, 1, 3, 4, 2).contiguous()
 
             if not self.training:  # inference
-                if self.grid[i].shape[2:4] != x[i].shape[2:4]:
+                if (self.grid[i].shape[2:4] != x[i].shape[2:4]) | (self.grid[i].device != x[i].device):
                     self.grid[i] = self._make_grid(nx, ny).to(x[i].device)
 
                 y = x[i].sigmoid()