Adrian is a Senior Software Engineer at Red Hat and is migrating processes at least since 2010. He started to migrate processes in a high performance computing environment and at some point he migrated so many processes that he got a PhD for that and since he joined Red Hat he started to migrate containers. Occasionally he still migrates single processes and is still interested in high performance computing topics.
I am using a Fedora kernel and a CentOS user-space.
One of my motivations was to have something portable based on OpenHPC.