"Part-funded by the US Department of Energy's National Nuclear Security Administration, the machine is to be built by IBM in conjunction with Los Alamos.......one of the laboratory's primary purposes is to run the US nuclear stockpile stewardship programme.....Over the past few years IBM's Blue Gene system has continually beaten all records in computational power, peaking at a massive 207 teraflops. A teraflop is one billion operations per second, whereas a petaflop — the holy grail of scientific computing — equals 1,000 billion operations a second. It is estimated that Roadrunner will be able to reach a hitherto unthinkable 1.6 petaflops.
.......the most advanced rival effort is a Japanese project, where, with 110bn Yen (£497m) of government funding, Japanese research agency Riken hopes to have a 10-petaflop computer by 2012.
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