[TUHS] CMU Mach sources?

[Dennis Boone]

 > For another example, Mach did a lot of extra work around things like
 > processor sets that wouldn’t be needed on (say) a dual-CPU
 > shared-cache uniform-memory systems, but turns out to be important
 > when dealing with things like systems with a hierarchy of CPUs,
 > caches, and memories. Did they know about all the possible needs for
 > that before they started?

For example, our campus had one of these, with 96 processors if I recall
correctly.  Mach-based OS.

https://en.wikipedia.org/wiki/BBN_Butterfly

De