Roadrunner still the fastest computer in the world.

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By The Staff

Six months after Los Alamos National Laboratory’s Roadrunner edged Oak Ridge National Laboratory’s Jaguar, 1.1 05 petaflops per second to 1.059 petaflops per second, their speeds remained exactly the same.

A petaflop is a quadrillion floating-point operations per second.

The difference between first and second was only 46 terraflops difference, or forty six trillion operations per second, but it was enough for the Roadrunner to retain bragging rights for another six months.

Roadrunner was the first supercomputer to break the petaflop speed barrier and held on to the top spot once again, while Jaguar again came in second.

“We are of course pleased to be number one again, however our focus has naturally moved to using the system for science and preparing to move Roadrunner into classified operation,” said Andy White, Roadrunner project director in a prepared statement this morning.

At the present time, Roadrunner is running computational models, including HIV and supernovae calculations.

Built by IBM for LANL, Roadrunner has the additional distinction of being three times more energy efficient than the number two machine.

The Top500 list is issued twice a year. The latest list was announced at the 2009 International Supercomputing Conference in Hamburg, Germany.

This is the third time in a row that Roadrunner has won the Top500 race, which means it will be the record holder for at least two years.

In announcing the Roadrunner victory, IBM also declared its determination to break the next barrier.

In partnership with the Industrial Development Agency of Ireland, IBM announced that it would focus on achieving “exascale” computing.

An exaflop is a million trillion calculations per second, a thousand times faster than a petaflop.

The next set of rankings will be announced at SC09, the International Conference for High Performance Computing, Networking, Storage and Analysis to be held in Portland, Ore. Nov. 14-20.