> The late 80s/early 90s was such an interesting time for supercomputer architectures. I don't remember ever hearing about Cydra. But there were lots of niche ones -- Kendall Square Research had the ALLCACHE architecture, there was the Connection Machine from Thinking Machines, and the Tera MTA with lots of threads to hide memory latency. There are lots of others (anybody have an interesting or favorite one I'm forgetting?)
Multiflow's [0] Trace VLIWs were pretty impressive. They had three models - 7-wide, 14-wide, and 28-wide. Stardent's Titan used MIPS CPUs and their own vector processors. The book The Architecture of Supercomputers: Titan, a Case Study has an excellent description of how their systems worked.