HPC environments are different from local systems and cloud environments.
Practitioners typically face initial challenges to utilize such a system efficiently. Moreover, often, data centers deploy a specific solution to set up and execute parallel applications. That means users must be trained in a particular solution to utilize a supercomputer efficiently.
Various user roles are covered as part of this subtree: practitioners that aim to deploy existing parallel applications as well as testers that just run already deployed applications, and also developers that create new applications.