[launch] fix typos (#41190)

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())

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))

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: