Merge pull request #11839 from velconia/fix_reader_op_in_pserver

Do NOT clone input vars if op NOT in pserver_program

python/paddle/fluid/transpiler/distribute_transpiler.py

@@ -552,10 +552,10 @@ class DistributeTranspiler(object):
                     op_on_pserver = True
                     new_outputs[key] = pserver_vars[op.output(key)[0]]
 
+            if op_on_pserver:
                 # most startup program ops have no inputs
                 new_inputs = self._get_input_map_from_op(pserver_vars, op)
 
-            if op_on_pserver:
                 if op.type in [
                         "gaussian_random", "fill_constant", "uniform_random"
                 ]: