diff --git a/python/paddle/distributed/launch/context/device.py b/python/paddle/distributed/launch/context/device.py
index c2f6896ab6c045da23a142b3ba5a6511c1d9b6ed..30b8cc1538590c51dbabdc0f181371f101ef5119 100644
--- a/python/paddle/distributed/launch/context/device.py
+++ b/python/paddle/distributed/launch/context/device.py
@@ -142,4 +142,4 @@ class Device(object):
 
 if __name__ == '__main__':
     d = Device.parse_device()
-    print(d.get_selected_flag())
+    print(d.get_selected_devices())
diff --git a/python/paddle/distributed/launch/controllers/collective.py b/python/paddle/distributed/launch/controllers/collective.py
index bbcb7c81d6e65c2e570ad3234619d95d9d7fdb20..3763bac0414511a683906b0971dd9c6cf1fbe9ab 100644
--- a/python/paddle/distributed/launch/controllers/collective.py
+++ b/python/paddle/distributed/launch/controllers/collective.py
@@ -93,7 +93,7 @@ class CollectiveController(Controller):
                 "PADDLE_RANK_IN_NODE": str(i),
             }
             if self.pod.replicas == 1:
-                e.update({selected_dev_key: selected_dev_list})
+                e.update({selected_dev_key: ",".join(selected_dev_list)})
             else:
                 e.update({selected_dev_key: selected_dev_list[i]})
             self.add_container(envs=e, log_tag=i)
@@ -134,7 +134,7 @@ class CollectiveElasticController(CollectiveController):
             if ok:
                 self.job.replicas = replicas
             else:
-                self.ctx.logger.warnning("peer not ready {}".format(self.job))
+                self.ctx.logger.warning("peer not ready {}".format(self.job))
                 break
 
             self.ctx.logger.debug("Run {}".format(self.job))
diff --git a/python/paddle/distributed/launch/job/container.py b/python/paddle/distributed/launch/job/container.py
index 7105cae9024f25f4b5d63a8d74d5d492777d4046..1f43b6ce04bacf6d144aea43a9b02760b171220b 100644
--- a/python/paddle/distributed/launch/job/container.py
+++ b/python/paddle/distributed/launch/job/container.py
@@ -162,7 +162,7 @@ class Container(object):
                 if idx > lines:
                     break
         finally:
-            return self._log_handler.tell()
+            return
 
     def tail(self, length=3000):
         if not self._log_handler: