diff --git a/doc_cn/algorithm/rnn/rnn.rst b/doc_cn/algorithm/rnn/rnn.rst
deleted file mode 100644
index f073ac4e20eeb26796f9444ea622db836c91d296..0000000000000000000000000000000000000000
--- a/doc_cn/algorithm/rnn/rnn.rst
+++ /dev/null
@@ -1,7 +0,0 @@
-RNN 配置
-========
-
-.. toctree::
-  :maxdepth: 3
-
-* `RNN配置 <../../../doc/algorithm/rnn/rnn.html>`_
diff --git a/doc_cn/cluster/index.rst b/doc_cn/cluster/index.rst
deleted file mode 100644
index 16c1f0e37bce0f6a9890e1ed820035597b4127c1..0000000000000000000000000000000000000000
--- a/doc_cn/cluster/index.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-集群训练
-========
-
-参见 `集群训练 <../../doc/cluster/index.html>`_
diff --git a/doc_cn/demo/embedding_model/index.md b/doc_cn/demo/embedding_model/index.md
deleted file mode 100644
index 5894a4de5a14a89f600a1862810ae03c314cd45b..0000000000000000000000000000000000000000
--- a/doc_cn/demo/embedding_model/index.md
+++ /dev/null
@@ -1 +0,0 @@
-# Embedding Demo
diff --git a/doc_cn/demo/image_classification/index.rst b/doc_cn/demo/image_classification/index.rst
deleted file mode 100644
index 98cbdc29b9d4acd72af254edddd07ed4774a6c57..0000000000000000000000000000000000000000
--- a/doc_cn/demo/image_classification/index.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-图片分类教程
-============
-
-TBD
diff --git a/doc_cn/demo/imagenet_model/index.md b/doc_cn/demo/imagenet_model/index.md
deleted file mode 100644
index b54b28401ce169b18cc1def0618947f22a75e0dc..0000000000000000000000000000000000000000
--- a/doc_cn/demo/imagenet_model/index.md
+++ /dev/null
@@ -1,2 +0,0 @@
-# Resnet
- TBD
diff --git a/doc_cn/demo/semantic_role_labeling/index.md b/doc_cn/demo/semantic_role_labeling/index.md
deleted file mode 100644
index a1594577bb511b990f33c9fabb8fe4b833e833ef..0000000000000000000000000000000000000000
--- a/doc_cn/demo/semantic_role_labeling/index.md
+++ /dev/null
@@ -1,2 +0,0 @@
-# 语义标注
-TBD
diff --git a/doc_cn/demo/sentiment_analysis/index.md b/doc_cn/demo/sentiment_analysis/index.md
deleted file mode 100644
index d95f2803a43ed16b8db2c6ddda745e4fb6d0b13b..0000000000000000000000000000000000000000
--- a/doc_cn/demo/sentiment_analysis/index.md
+++ /dev/null
@@ -1,2 +0,0 @@
-# 情感分析
-TBD
diff --git a/doc_cn/demo/text_generation/index.rst b/doc_cn/demo/text_generation/index.rst
deleted file mode 100644
index 147b77646536cee9fe5835e157bd30ca23d282bc..0000000000000000000000000000000000000000
--- a/doc_cn/demo/text_generation/index.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-文本生成
-========
-TBD
diff --git a/doc_cn/dev/new_layer/index.rst b/doc_cn/dev/new_layer/index.rst
deleted file mode 100644
index aafeceff5b9699f587b0c4b46a7595530b3aaf9a..0000000000000000000000000000000000000000
--- a/doc_cn/dev/new_layer/index.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-新写Layer
-=========
-
-* `新写Layer <../../../doc/dev/new_layer/index.html>`_
diff --git a/doc_cn/index.md b/doc_cn/index.md
deleted file mode 100644
index f21f60e146c1bb7e6e4b30037276baca30e9b4eb..0000000000000000000000000000000000000000
--- a/doc_cn/index.md
+++ /dev/null
@@ -1,19 +0,0 @@
-PaddlePaddle文档
-================
-
-使用指南
---------
-* [快速入门](demo/quick_start/index.md)
-* [编译与安装](build_and_install/index.rst)
-* [用户接口](ui/index.rst)
-* [使用示例](demo/index.rst)
-* [模型配置](ui/model.rst)
-* [集群训练](cluster/index.rst)
-
-开发指南
---------
-* [新写Layer](dev/new_layer/index.rst)
-
-算法教程
---------
-* [RNN配置](algorithm/rnn/rnn.rst)
diff --git a/doc_cn/index.rst b/doc_cn/index.rst
new file mode 100644
index 0000000000000000000000000000000000000000..5f06463899f6b7b8166ff2cccd87b17817c6f5d1
--- /dev/null
+++ b/doc_cn/index.rst
@@ -0,0 +1,19 @@
+PaddlePaddle文档
+================
+
+使用指南
+--------
+* `快速入门 <demo/quick_start/index.html>`_
+* `编译与安装 <build_and_install/index.html>`_
+* `用户接口 <ui/index.html>`_
+* `使用示例 <demo/index.html>`_
+* `模型配置 <../doc/ui/api/trainer_config_helpers/index.html>`_
+* `集群训练 <../doc/cluster/index.html>`_
+
+开发指南
+--------
+* `新写Layer <../doc/dev/new_layer/index.html>`_
+
+算法教程
+--------
+* `RNN配置 <../doc/algorithm/rnn/rnn.html>`_
diff --git a/doc_cn/ui/model.rst b/doc_cn/ui/model.rst
deleted file mode 100644
index 7a81236d6f547ad80f45a5f44d909f269f9a134b..0000000000000000000000000000000000000000
--- a/doc_cn/ui/model.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-模型配置
-========
-
-* `Model Config Interface <../../doc/ui/api/trainer_config_helpers/index.html>`_
diff --git a/paddle/cuda/include/hl_device_functions.cuh b/paddle/cuda/include/hl_device_functions.cuh
index 2fbc2cfb50221efae90d96270602585007633d5c..27e3f450c5c1c987f4b3fbc2eb1e52a1696c7320 100755
--- a/paddle/cuda/include/hl_device_functions.cuh
+++ b/paddle/cuda/include/hl_device_functions.cuh
@@ -16,8 +16,6 @@ limitations under the License. */
 #ifndef HL_DEVICE_FUNCTIONS_CUH_
 #define HL_DEVICE_FUNCTIONS_CUH_
 
-#if defined(__CUDA_ARCH__) && __CUDA_ARCH__ < 600
-
 namespace hppl {
 
 static __inline__ __device__ double atomicAdd(double* address, double val) {
@@ -42,6 +40,4 @@ static __inline__ __device__ double atomicAdd(double* address, double val) {
 using hppl::atomicAdd;
 #endif
 
-#endif
-
 #endif /* HL_DEVICE_FUNCTIONS_CUH_ */