Who built the fastest computer in the world?
The supercomputer gene pool has expanded. Of the top 10 systems on a list of the 500 most powerful supercomputers announced Sunday, three machines are new, one is upgraded, and two are based on processors that have never before appeared on the list: IBM's PowerPC 970 and Advanced Micro Devices' Opteron.
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Top dog though in the world of supercomputing is NEC, who keeps HP in second place.
The IBM chips show up in a $5.2m system officially named X but informally dubbed "Big Mac" that Virginia Polytechnic Institute and State University researchers assembled over two months from 1,100 dual-processor Apple G5 computers. That system ranked third with a performance of 10.3 trillion calculations per second, or 10.3 teraflops.
The Opterons are used in a 2,816-processor cluster built by Linux Networx for Los Alamos National Laboratory. Its sustained speed is eight teraflops.
