diff --git a/python/paddle_serving_server_gpu/__init__.py b/python/paddle_serving_server_gpu/__init__.py
index dbd974dab2a1a51e78d44964b8aacf17e61cb67f..be430def8ca2501d29ce8978c8b444ec0d5bf570 100644
--- a/python/paddle_serving_server_gpu/__init__.py
+++ b/python/paddle_serving_server_gpu/__init__.py
@@ -88,6 +88,7 @@ class Server(object):
         self.cur_path = os.getcwd()
         self.vlog_level = 0
         self.use_local_bin = False
+        self.gpuid = 0
 
     def set_max_concurrency(self, concurrency):
         self.max_concurrency = concurrency