Doggone it!, I can't remember the name, but google (
www.google.com/linux) for 'cluster computing' and/or 'supercomputing' &/or 'supercluster', with & without the spaces; its there, I d***-well know it is because I was going to do a job with it.
* * * A-HAH!!!!!!! * * *
* * * BEOWOLF or BEOWULF !! * * *
I already know it can, barely, run on a group of older cpus; was to try it with 100MHz -- 300MHz, and it was known then to work with these (& lower!)
Best!,