by Irving Wladawsky-Berger
Supercomputing has been a major part of my education and career, from the late 1960s when I was doing atomic and molecular calculations as a physics doctorate student at the University of Chicago, to the early 1990s when I was general manager of IBM’s SP family of parallel supercomputers.
The performance advances of supercomputers in these past decades have been remarkable. The machines I used as a student in the 1960s probably had a peak performance of a few million calculations per second or megaflops. Gigaflops (billions) peak speeds were achieved in 1985, teraflops (trillions) in 1997, and petaflops (a 1 followed by fifteen zeros) in 2008.
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