One super upvote!I used used this cray ack to some demo code. I really admire kej715 for adding a backend to ack just from reading specification and limited access to hardware as there are no loving cray 1's anymore. I had to try it! Did't build at first so I even contributed a tiny fix to make it work on my sys.

This is also the guy who wrote a DtCyber that emulates many vintage super computers and stuff. Pretty cool! Thank you man!