When I was at Princeton, a lot of clusters ran Springdale Linux[1], which is a Princeton/IAS version of RHEL compiled from RHEL source. I wonder why they didn't simply choose CentOS, and if there's any institution outside Princeton using Springdale.
Btw: it doesn't seem to have been ported to RHEL 8 (?).
They address that particular question even before the FAQ on their site:
"This project was started long before CentOS or other projects were available."
I bet the have calculated that their work maintaining this is rather simple and well-worth it, or they would have changed over to CentOS a long time ago.
Btw: it doesn't seem to have been ported to RHEL 8 (?).
[1] http://springdale.math.ias.edu/