From 238abc4ad3edd516c5533661bb976cb93974ec75 Mon Sep 17 00:00:00 2001
From: Helin Wang <ustc.harry@gmail.com>
Date: Wed, 25 Oct 2017 12:49:09 -0700
Subject: [PATCH] Fix new pserver having random momemtum initial values

---
 paddle/optimizer/tensor.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/paddle/optimizer/tensor.h b/paddle/optimizer/tensor.h
index 80a8c93081e..86fa625e01b 100644
--- a/paddle/optimizer/tensor.h
+++ b/paddle/optimizer/tensor.h
@@ -15,7 +15,8 @@ template <class T>
 class TensorT {
 public:
   TensorT(size_t size) : height_(1), width_(size) {
-    data_ptr_ = std::shared_ptr<T>(new T[size], std::default_delete<T[]>());
+    // new T[size]() initializes all element to zero value.
+    data_ptr_ = std::shared_ptr<T>(new T[size](), std::default_delete<T[]>());
     data_ = data_ptr_.get();
   }
 
-- 
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