From 720f6196ea0e62d95111ee0ceb2f9f7f92626fe1 Mon Sep 17 00:00:00 2001
From: Liu Yiqun <liuyiqun01@baidu.com>
Date: Mon, 9 Apr 2018 08:46:03 +0000
Subject: [PATCH] Change the seed and make it not fixed for multi-threads
 cases.

---
 paddle/fluid/inference/tests/test_helper.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/paddle/fluid/inference/tests/test_helper.h b/paddle/fluid/inference/tests/test_helper.h
index aae34ceda07..064e400f0c7 100644
--- a/paddle/fluid/inference/tests/test_helper.h
+++ b/paddle/fluid/inference/tests/test_helper.h
@@ -25,7 +25,8 @@ limitations under the License. */
 template <typename T>
 void SetupTensor(paddle::framework::LoDTensor* input,
                  paddle::framework::DDim dims, T lower, T upper) {
-  std::mt19937 rng(100);  // An arbitrarily chosen but fixed seed.
+  static unsigned int seed = 100;
+  std::mt19937 rng(seed++);
   std::uniform_real_distribution<double> uniform_dist(0, 1);
 
   T* input_ptr = input->mutable_data<T>(dims, paddle::platform::CPUPlace());
-- 
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