2. 安装依赖
sudo apt-get update
sudo apt-get install -y build-essential git ninja-build ccache libopenblas-dev libopencv-dev cmake
3. 进入mxnet目录，用cmake配置编译环境并编译
cd mxnet
cp config/linux.cmake config.cmake
mkdir build; cd build
cmake ..
cmake --build .
4. 安装mxnet python语言绑定
python3 -m pip install --use
