fix launch when elastic run (#61847) (#61878)

python/paddle/distributed/launch/controllers/collective.py

@@ -45,7 +45,10 @@ def build_pod(self):
         ):
             return self._build_pod_with_args()
         else:
-            return self._build_pod_with_master()
+            if self.ctx.args.auto_parallel_config is None:
+                skip_run = True
+            # only when skip_run is Flase, should not reset pod
+            return self._build_pod_with_master(skip_run)
 
     def _build_pod_with_tuner(self):
         auto_parallel_config = self.ctx.args.auto_parallel_config
@@ -148,7 +151,7 @@ def _build_pod_with_args(self):
 
         return True
 
-    def _build_pod_with_master(self):
+    def _build_pod_with_master(self, reset_pod=True):
         self.pod.replicas = self.pod_replicas()
 
         # rank will be reset when restart
@@ -203,7 +206,8 @@ def _build_pod_with_master(self):
 
         job_endpoints = [i['endpoints'] for i in peer_list]
 
-        # self.pod.reset()
+        if reset_pod:
+            self.pod.reset()
         selected_dev_key = self.ctx.node.device.get_selected_device_key()
         selected_dev_list = self.ctx.node.device.get_selected_devices(
             self.ctx.args.devices