modify get trainer param

python/paddle/fluid/transpiler/distribute_transpiler.py

@@ -525,12 +525,15 @@ class DistributeTranspiler:
         if not checkpoint_load_dir:
             return startup_prog
 
+        load_vars = []
         for var in startup_prog.list_vars():
             if self.is_persistable(var):
-                print("var: %s" % var.name)
+                load_vars.append(var.name)
 
         startup_prog.global_block().append_op(
-            type="checkpoint_load", attrs={"dir": checkpoint_load_dir})
+            type="checkpoint_load",
+            outputs={"Out": load_vars},
+            attrs={"dir": checkpoint_load_dir})
         return startup_prog
 
     def get_startup_program(self, endpoint, pserver_program):