Install and configure openmpi

Install and configure openmpi

The main installation steps are as follows.

Download and decompress openmpi

Download the latest version from the official website and decompress it.

Tar-xvf openmpi-xxxcd openmpi-xxx

Configuration, the-prefix option indicates the installation directory

./Configure -- prefix = "/opt/openmpi"

Build installation. The-j option indicates the number of Cores Used for compilation.

Make-j 4 all

There are a lot of output, wait a few minutes

Make install

Usage. Either of the following two methods

Add Environment Variables

Add the following lines to the. bashrc file:

Export PATH = "$ PATH:/opt/openmpi/bin" export LD_LIBRARY_PATH = "$ LD_LIBRARY_PATH:/opt/openmpi/lib /"

Use the configuration file

Vim openmpi-gcc # Add the following statement export PATH = "$ PATH:/opt/openmpi/bin" export LD_LIBRARY_PATH = "$ LD_LIBRARY_PATH:/opt/openmpi/lib /"

Run source/opt/openmpi-gcc to use

Check whether the installation is successful

Which mpirun

Or

Mpirun

Since then, openmpi has been installed.