An American military supercomputer created from components originally designed for video-game machines has passed the petaflop threshold by processing more than 1.026 quadrillion calculations per second. "This is equivalent to the four-minute mile of supercomputing," says University of Tennessee computer scientist Jack Dongarra. The Roadrunner is more than twice as fast as the previous fastest computer, the IBM BlueGene/L based at Lawrence Livermore National Laboratory in California. Read More
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