diff --git a/python/paddle/fluid/async_executor.py b/python/paddle/fluid/async_executor.py
index 76fdb5b0e263de4517a5ef4b6634dbe0fcee31b3..787a6a6b9e19e6253664187ee166609c2e2abc1f 100644
--- a/python/paddle/fluid/async_executor.py
+++ b/python/paddle/fluid/async_executor.py
@@ -86,7 +86,7 @@ class AsyncExecutor(object):
 
         scope = global_scope()
         self.executor = core.AsyncExecutor(scope, p)
-        self.instance = ps_instance.PaddlePSInstance("init_param", 1, 2)
+        self.instance = ps_instance.PaddlePSInstance(1, 2)
 
     def run(self, program, data_feed, filelist, thread_num, fetch, debug=False):
         """
@@ -151,10 +151,7 @@ class AsyncExecutor(object):
         self.executor.run_from_files(program_desc,
                                      data_feed.desc(), filelist, thread_num,
                                      fetch_var_names, debug)
-        self.instance.barrier_all() #worker do all things
-        if self.instance.is_first_worker():
-            self.executor.stop_server()
-        self.instance.barrier_all() #sync
+
 
     def config_distributed_nodes(self, dist_opt):
 
@@ -167,8 +164,11 @@ class AsyncExecutor(object):
     def get_instance(self):
         return self.instance
 
-    #def stop_server(self):
-    #    self.executor.stop_server()
+    def stop_server(self):
+        self.instance.barrier_all() #worker do all things
+        if self.instance.is_first_worker():
+            self.executor.stop_server()
+        self.instance.barrier_all() #sync
 
     def init_server(self, dist_desc):
         self.executor.init_server(dist_desc, self.instance._rankid)
diff --git a/python/paddle/fluid/distributed/ps_instance.py b/python/paddle/fluid/distributed/ps_instance.py
index b4045327e1b17b559a82c7fab811e7ef7adbc7b4..94e123c2ceba837375b3adca075e5c0dc144c510 100644
--- a/python/paddle/fluid/distributed/ps_instance.py
+++ b/python/paddle/fluid/distributed/ps_instance.py
@@ -5,9 +5,8 @@ import sys
 
 
 class PaddlePSInstance(object):
-    def __init__(self, init_param, server_worker_mode, proc_per_node):
+    def __init__(self, server_worker_mode, proc_per_node):
         self.dh = dist_helper.MPIHelper()
-        self._config = init_param
         self._rankid = self.dh.get_rank()
         self._server_worker_mode = server_worker_mode
         self._proc_per_node = proc_per_node