Linux下安装OpenMPI(下载,安装,环境变量,例子测试)
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1、下载openmpi:https://www.open-mpi.org/

2、将文件上传到服务器并解压
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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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