In 2008, Darpa, the Defense Advanced Research Projects Agency assembled panel of nation’s best supercomputer experts and asked them to think about ways in which it might be possible to reach an exascale computer — a supercomputer capable of executing one quintillion mathematical calculations in a second, about 1,000 times faster than today’s fastest systems.
The panel, led by Peter Kogge, a University of Notre Dame supercomputer designer, came back with pessimistic conclusions. “Will the next decade see the same kind of spectacular progress as the last two did?” he wrote IEEE Spectrum. “Alas, no.” “The party isn’t over, but the police have arrived and the music has been turned way down.”
Incredibly Power hungry with today architecture...A 10-petaflop supercomputer — scheduled to be built by I.B.M. next year — will consume 15 megawatts of power, roughly the electricity consumed by a city of 15,000 homes. An exascale computer, built with today’s microprocessors, would require 1.6 gigawatts. That would be roughly one and half times the amount of electricity produced by a nuclear power plant