一、apt安装
sudo apt-get install libopenblas-dev
二、手动从source安装
1. 下载OpenBLAS并编译
1 git clone https://github.com/xianyi/OpenBLAS.git
2 cd OpenBLAS
3 make -j8
4 sudo make PREFIX=/usr/local/OpenBLAS install
2. 修改Caffe配置文件以下几行
# open for OpenBlas
BLAS := open
# Custom (MKL/ATLAS/OpenBLAS) include and lib directories.
# Leave commented to accept the defaults for your choice of BLAS
# (which should work)!
BLAS_INCLUDE := /usr/local/OpenBLAS/include
BLAS_LIB := /usr/local/OpenBLAS/lib
3. 添加环境变量
在 /etc/profile 末尾加上 export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/OpenBLAS/lib/ 然后 sudo source /etc/profile
注：直接安装在/usr/local 下应该就不需要添加环境变量
4. 编译Caffe
5. 可在环境变量中设置OpenBLAS所使用的CPU线程数
export OPENBLAS_NUM_THREADS=4