From 1ca1e1c3843e2710e6a9790a503626afb6af44b9 Mon Sep 17 00:00:00 2001
From: Xin Pan <panxin.grad@gmail.com>
Date: Thu, 15 Mar 2018 18:43:44 -0700
Subject: [PATCH] Fix a program copy regression.

Single device on se-resnet reduce from 0.56 to 0.50
---
 paddle/fluid/framework/executor.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/paddle/fluid/framework/executor.cc b/paddle/fluid/framework/executor.cc
index fb7c13d36d..bcbd717aa4 100644
--- a/paddle/fluid/framework/executor.cc
+++ b/paddle/fluid/framework/executor.cc
@@ -44,7 +44,7 @@ struct ExecutorPrepareContext {
   ExecutorPrepareContext(const framework::ProgramDesc& prog, size_t block_id)
       : prog_(prog), block_id_(block_id) {}
 
-  framework::ProgramDesc prog_;
+  const framework::ProgramDesc& prog_;
   size_t block_id_;
   std::vector<std::unique_ptr<OperatorBase>> ops_;
 };
-- 
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