1、下载openmpi:https://www.open-mpi.org/

 2、将文件上传到服务器并解压

 3、配置安装路径,编译并安装,安装路径自定义

./configure --prefix=/usr/local/openmpi
make
make install

4、设置环境变量,路径为自己安装的路径

MPI_HOME=/usr/local/openmpi
export PATH=${MPI_HOME}/bin:$PATH
export LD_LIBRARY_PATH=${MPI_HOME}/lib:$LD_LIBRARY_PATH
export MANPATH=${MPI_HOME}/share/man:$MANPATH

5、验证安装成功,测试一下自带的例子

cd openmpi-4.0.4/examples
make
mpirun -np 4 hello_c

执行结果:

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