From 3c2cafbe1d04843803a6f449389d123ae216758d Mon Sep 17 00:00:00 2001
From: "Yang Yang(Tony)" <yangyang62@baidu.com>
Date: Tue, 20 Feb 2018 15:31:31 -0800
Subject: [PATCH] fix parallel do hard coded empty var name (#8469)

---
 paddle/fluid/operators/parallel_do_op.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/paddle/fluid/operators/parallel_do_op.cc b/paddle/fluid/operators/parallel_do_op.cc
index 6436efe42f1eb..bf4d0476df32d 100644
--- a/paddle/fluid/operators/parallel_do_op.cc
+++ b/paddle/fluid/operators/parallel_do_op.cc
@@ -256,7 +256,7 @@ class ParallelDoGradOp : public framework::OperatorBase {
       }
     }
     for (auto &s : Outputs(framework::GradVarName(kParameters))) {
-      if (s == "@EMPTY@") {
+      if (s == framework::kEmptyVarName) {
         continue;
       }
       VLOG(3) << "Moving " << s;
@@ -270,7 +270,7 @@ class ParallelDoGradOp : public framework::OperatorBase {
                       const std::vector<framework::Scope *> &sub_scopes,
                       const platform::PlaceList &places) const {
     for (auto &s : Outputs(framework::GradVarName(kParameters))) {
-      if (s == "@EMPTY@") {
+      if (s == framework::kEmptyVarName) {
         continue;
       }
       VLOG(3) << "Accumulating " << s;