From 8d83e38a6b8c4f38e1ec228c54061fb94d6403a3 Mon Sep 17 00:00:00 2001
From: Xin Pan <panxin.grad@gmail.com>
Date: Fri, 22 Feb 2019 21:24:20 +0800
Subject: [PATCH] remove mutex

test=develop
---
 paddle/fluid/framework/operator.h | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/paddle/fluid/framework/operator.h b/paddle/fluid/framework/operator.h
index b8d2c1eaf2..8109739cae 100644
--- a/paddle/fluid/framework/operator.h
+++ b/paddle/fluid/framework/operator.h
@@ -202,8 +202,6 @@ class AlgorithmsCache {
 
  private:
   std::unordered_map<int64_t, TAlgorithm> hash_;
-  std::mutex mutex_;
-
   int search_times_;
 };
 
@@ -213,7 +211,6 @@ TAlgorithm framework::AlgorithmsCache<TAlgorithm>::GetAlgorithm(
     const std::vector<int>& strides, const std::vector<int>& paddings,
     const std::vector<int>& dilations, int algorithmFlags,
     std::function<TAlgorithm()> gen_func) {
-  std::lock_guard<std::mutex> lock(mutex_);
   int64_t seed = 0;
   // Hash all of the inputs, use to try and look up a previously
   // discovered algorithm, or fall back to generating a new one.
-- 
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