mjhjmtu

I want to install OpenMPI on a linux HPC cluster with a Slurm resource manager. I know how to build OpenMPI regulariy from source , however, how do I install it so that it is installed properly on the compute nodes as well?

Just as with your similar question about mpich the answer is to install the packaged version of OpenMPI provided by your distribution on each node of your cluster.

You're running Ubuntu, so:

apt-get install openmpi-bin

The openmpi-bin package depends on libopenmpi2 and openmpi-common so installing it will cause them to be automatically installed.

You may also want to install the documentation (openmpi-doc) and/or the develoment headers and libs (libopenmpi-dev) on another machine (perhaps on the head node of your cluster) - these aren't needed on the computation nodes.

BTW, If you have, e.g., pdsh installed and configured on your head node, you could install openmpi-bin on your entire cluster with one command. e.g.

pdsh -g all 'apt-get update && DEBIAN_FRONTEND=noninteractive apt-get -y install openmpi-bin'

FYI, pdsh ("Parallel Distributed Shell") was written by LLNL (who were also the authors of slurm) in order to help automate administration and management of their clusters. It was written to be an enhanced open-source clone of an IBM program called dsh ("Distributed Shell")

Also BTW, you can find a list of Ubuntu openmpi packages AND packages that use OpenMPI at: https://packages.ubuntu.com/search?keywords=openmpi

The list includes the versions of the packages available for each Ubuntu release.