From 65dd7ec2d6a51ccaff6e37c8c694058bdc2de908 Mon Sep 17 00:00:00 2001
From: Zeng Jinle <32832641+sneaxiy@users.noreply.github.com>
Date: Mon, 20 May 2019 02:21:58 -0500
Subject: [PATCH] add clear ops in dygraph optimizers,test=develop (#17484)

---
 python/paddle/fluid/optimizer.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/python/paddle/fluid/optimizer.py b/python/paddle/fluid/optimizer.py
index 5d9f7d1ee7..4f21ace202 100644
--- a/python/paddle/fluid/optimizer.py
+++ b/python/paddle/fluid/optimizer.py
@@ -499,6 +499,9 @@ class Optimizer(object):
         optimize_ops = self.apply_optimize(
             loss, startup_program=startup_program, params_grads=params_grads)
 
+        if framework.in_dygraph_mode():
+            framework._dygraph_tracer()._clear_ops()
+
         return optimize_ops, params_grads
 
 
-- 
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