Michael: This discussion has also been taking place periodically in the main Beowulf lists over at Beowulf.org (https://www.beowulf.org)
See, for example, their archives from May-November 2023 for the thread. For anyone interested in HPC, I commend the Beowulf list - very small numbers of extremely motivated, extremely competent people. Disclaimer: I'm also an occasional contributor to discussions there - and I first suggested that they use Debian rather than a Red Hat base in about 1998 when Red Hat launched Extreme Linux :) All the very best, as ever, Andy (amaca...@debian.org)