# 如何编译PaddleServing
(简体中文|[English](./COMPILE.md))
## 编译环境设置
| 组件 | 版本要求 |
| :--------------------------: | :----------------------------------------------------------: |
| OS | CentOS 7 |
| gcc | 4.8.5 and later |
| gcc-c++ | 4.8.5 and later |
| git | 3.82 and later |
| cmake | 3.2.0 and later |
| Python | 2.7.2 and later / 3.6 and later |
| Go | 1.9.2 and later |
| git | 2.17.1 and later |
| glibc-static | 2.17 |
| openssl-devel | 1.0.2k |
| bzip2-devel | 1.0.6 and later |
| python-devel / python3-devel | 2.7.5 and later / 3.6.8 and later |
| sqlite-devel | 3.7.17 and later |
| patchelf | 0.9 |
| libXext | 1.3.3 |
| libSM | 1.2.2 |
| libXrender | 0.9.10 |
| python-whl | numpy>=1.12, <=1.16.4
google>=2.0.3
protobuf>=3.12.2
grpcio-tools>=1.28.1
grpcio>=1.28.1
func-timeout>=4.3.5
pyyaml>=1.3.0
sentencepiece==0.1.92
flask>=1.1.2
ujson>=2.0.3 |
推荐使用Docker编译,我们已经为您准备好了Paddle Serving编译环境,详见[该文档](DOCKER_IMAGES_CN.md)。
本文档将以Python2为例介绍如何编译Paddle Serving。如果您想用Python3进行编译,只需要调整cmake的Python相关选项即可:
- 将`DPYTHON_INCLUDE_DIR`设置为`$PYTHONROOT/include/python3.6m/`
- 将`DPYTHON_LIBRARIES`设置为`$PYTHONROOT/lib64/libpython3.6.so`
- 将`DPYTHON_EXECUTABLE`设置为`$PYTHONROOT/bin/python3.6`
## 获取代码
``` python
git clone https://github.com/PaddlePaddle/Serving
cd Serving && git submodule update --init --recursive
```
## PYTHONROOT设置
```shell
# 例如python的路径为/usr/bin/python,可以设置PYTHONROOT
export PYTHONROOT=/usr/
```
我们提供默认Centos7的Python路径为`/usr/bin/python`,如果您要使用我们的Centos6镜像,需要将其设置为`export PYTHONROOT=/usr/local/python2.7/`。
## 安装Python依赖
```shell
pip install -r python/requirements.txt
```
如果使用 Python3,请以 `pip3` 替换 `pip`。
## 编译Server部分
### 集成CPU版本Paddle Inference Library
``` shell
mkdir server-build-cpu && cd server-build-cpu
cmake -DPYTHON_INCLUDE_DIR=$PYTHONROOT/include/python2.7/ -DPYTHON_LIBRARIES=$PYTHONROOT/lib/libpython2.7.so -DPYTHON_EXECUTABLE=$PYTHONROOT/bin/python -DSERVER=ON ..
make -j10
```
可以执行`make install`把目标产出放在`./output`目录下,cmake阶段需添加`-DCMAKE_INSTALL_PREFIX=./output`选项来指定存放路径。
### 集成GPU版本Paddle Inference Library
``` shell
mkdir server-build-gpu && cd server-build-gpu
cmake -DPYTHON_INCLUDE_DIR=$PYTHONROOT/include/python2.7/ -DPYTHON_LIBRARIES=$PYTHONROOT/lib/libpython2.7.so -DPYTHON_EXECUTABLE=$PYTHONROOT/bin/python -DSERVER=ON -DWITH_GPU=ON ..
make -j10
```
执行`make install`可以把目标产出放在`./output`目录下。
**注意:** 编译成功后,需要设置`SERVING_BIN`路径,详见后面的[注意事项](https://github.com/PaddlePaddle/Serving/blob/develop/doc/COMPILE_CN.md#注意事项)。
## 编译Client部分
``` shell
mkdir client-build && cd client-build
cmake -DPYTHON_INCLUDE_DIR=$PYTHONROOT/include/python2.7/ -DPYTHON_LIBRARIES=$PYTHONROOT/lib/libpython2.7.so -DPYTHON_EXECUTABLE=$PYTHONROOT/bin/python -DCLIENT=ON ..
make -j10
```
执行`make install`可以把目标产出放在`./output`目录下。
## 编译App部分
```bash
mkdir app-build && cd app-build
cmake -DPYTHON_INCLUDE_DIR=$PYTHONROOT/include/python2.7/ -DPYTHON_LIBRARIES=$PYTHONROOT/lib/libpython2.7.so -DPYTHON_EXECUTABLE=$PYTHONROOT/bin/python -DCMAKE_INSTALL_PREFIX=./output -DAPP=ON ..
make
```
## 安装wheel包
无论是Client端,Server端还是App部分,编译完成后,安装`python/dist/`下的whl包即可。
## 注意事项
运行python端Server时,会检查`SERVING_BIN`环境变量,如果想使用自己编译的二进制文件,请将设置该环境变量为对应二进制文件的路径,通常是`export SERVING_BIN=${BUILD_DIR}/core/general-server/serving`。
## CMake选项说明
| 编译选项 | 说明 | 默认 |
| :--------------: | :----------------------------------------: | :--: |
| WITH_AVX | Compile Paddle Serving with AVX intrinsics | OFF |
| WITH_MKL | Compile Paddle Serving with MKL support | OFF |
| WITH_GPU | Compile Paddle Serving with NVIDIA GPU | OFF |
| CUDNN_ROOT | Define CuDNN library and header path | |
| CLIENT | Compile Paddle Serving Client | OFF |
| SERVER | Compile Paddle Serving Server | OFF |
| APP | Compile Paddle Serving App package | OFF |
| WITH_ELASTIC_CTR | Compile ELASITC-CTR solution | OFF |
| PACK | Compile for whl | OFF |
### WITH_GPU选项
Paddle Serving通过PaddlePaddle预测库支持在GPU上做预测。WITH_GPU选项用于检测系统上CUDA/CUDNN等基础库,如检测到合适版本,在编译PaddlePaddle时就会编译出GPU版本的OP Kernel。
在裸机上编译Paddle Serving GPU版本,需要安装这些基础库:
- CUDA
- CuDNN
- NCCL2
这里要注意的是:
1. 编译Serving所在的系统上所安装的CUDA/CUDNN等基础库版本,需要兼容实际的GPU设备。例如,Tesla V100卡至少要CUDA 9.0。如果编译时所用CUDA等基础库版本过低,由于生成的GPU代码和实际硬件设备不兼容,会导致Serving进程无法启动,或出现coredump等严重问题。
2. 运行Paddle Serving的系统上安装与实际GPU设备兼容的CUDA driver,并安装与编译期所用的CUDA/CuDNN等版本兼容的基础库。如运行Paddle Serving的系统上安装的CUDA/CuDNN的版本低于编译时所用版本,可能会导致奇怪的cuda函数调用失败等问题。
以下是PaddlePaddle发布版本所使用的基础库版本匹配关系,供参考:
| | CUDA | CuDNN | NCCL2 |
| :----: | :-----: | :----------------------: | :----: |
| CUDA 8 | 8.0.61 | CuDNN 7.1.2 for CUDA 8.0 | 2.1.4 |
| CUDA 9 | 9.0.176 | CuDNN 7.3.1 for CUDA 9.0 | 2.2.12 |
### 如何让Paddle Serving编译系统探测到CuDNN库
从NVIDIA developer官网下载对应版本CuDNN并在本地解压后,在cmake编译命令中增加`-DCUDNN_ROOT`参数,指定CuDNN库所在路径。
### 如何让Paddle Serving编译系统探测到nccl库
从NVIDIA developer官网下载对应版本nccl2库并解压后,增加如下环境变量 (以nccl2.1.4为例):
```shell
export C_INCLUDE_PATH=/path/to/nccl2/cuda8/nccl_2.1.4-1+cuda8.0_x86_64/include:$C_INCLUDE_PATH
export CPLUS_INCLUDE_PATH=/path/to/nccl2/cuda8/nccl_2.1.4-1+cuda8.0_x86_64/include:$CPLUS_INCLUDE_PATH
export LD_LIBRARY_PATH=/path/to/nccl2/cuda8/nccl_2.1.4-1+cuda8.0_x86_64/lib/:$LD_LIBRARY_PATH
```