Cray Y-MP installed
The 4-processor, 1.3 billion calculations per second Cray Y-MP arrived and was put into production late 1990, replacing the Cray X-MP. By the time it retired, over 6,200 researchers and their students performed more than 100,000 hours of calculations on its four processors. The machine’s speedy floating point performance, coupled with copious memory and disk resources, allowed scientists to explore problems in astrophysics, chaos, chemistry, materials science, and other areas that were previously out of reach.
“The Cray Research Y-MP product line enabled more supercomputing science and engineering projects than any computer in history,” NCSA Director Larry Smarr said.