add details. test=develop

python/paddle/fluid/compiler.py

@@ -177,7 +177,10 @@ class CompiledProgram(object):
 
         # FIXME(dzhwinter): enable_inplace should be after memory_optimize
         # if turn on python memory optimize, turn off the inplace_pass.
-        self._build_strategy.enable_inplace = False if self._program._is_mem_optimized else True
+        if build_strategy.memory_optimize is None:
+            build_strategy.memory_optimize = False if main._is_mem_optimized else True
+        if build_strategy.enable_inplace is None:
+            build_strategy.enable_inplace = False if main._is_mem_optimized else True
 
         if self._build_strategy.num_trainers > 1 and trainers_endpoints:
             assert self._build_strategy.num_trainers == len(

python/paddle/fluid/parallel_executor.py

@@ -148,6 +148,8 @@ class ParallelExecutor(object):
             else framework.default_main_program()
         # FIXME(dzhwinter): enable_inplace should be after memory_optimize
         # if turn on python memory optimize, turn off the inplace_pass.
+        if build_strategy.memory_optimize is None:
+            build_strategy.memory_optimize = False if main._is_mem_optimized else True
         if build_strategy.enable_inplace is None:
             build_strategy.enable_inplace = False if main._is_mem_optimized else True
         scope = scope if scope is not None else executor.global_scope()