Warewulf installed with a compute node is not really an HPC cluster; you need to ensure precise time keeping and add a resource manager.

HPC systems can benefit from administrator-defined prolog and epilog scripts.

One way to share HPC systems among several users is to use a software tool called a resource manager. Slurm, probably the most common job scheduler in use today, is open source, scalable, and easy to install and customize.

Sooner or later, every cluster develops a plethora of tools and libraries for applications or for building applications. Often the applications or tools need different compilers or different MPI libraries, so how do you handle situations in which you need to change tool sets or applications? You can do it the hard way, or you can do it the easy way with Environment Modules.