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Roadrunner Supercomputer  (Source: IBM)
Roadrunner supercomputer is first to break petaflop barrier

A new supercomputer in the U.S. has broken a barrier that many thought wouldn’t be broken for years to come. A new supercomputer-- dubbed Roadrunner-- has broken the petaflop barrier.

Roadrunner was designed by engineers and scientists at IBM and the Los Alamos National Laboratory. Ultimately, Roadrunner will be placed into a classified environment where it will be used to simulate what effects aging has on the stockpile of nuclear weapons the U.S. has in its arsenal. The problem it will work on is modeling how aging nuclear weapons behave the first fraction of a second during an explosion. Before beginning its nuclear weapons research, Roadrunner will be used to model the effects of global warming.

The Roadrunner supercomputer costs $133 million and is built using chips from both consumer electronics and more common server processors.

Roadrunner has 12,960 chips that are an improved version of the Cell chip used in the PS3. These Cell processors act as a turbocharger for certain portions of the calculations the Roadrunner processes. The computer also uses a smaller, unspecified number of AMD Opteron processors.

A computer researcher from the University of Tennessee, Jack Dongarra told the New York Times, “This [breaking the petaflop barrier] is equivalent to the four-minute mile of supercomputing.”

Horst Simon from the Lawrence Berkley National Laboratory said, “Roadrunner tells us about what will happen in the next decade. Technology is coming from the consumer electronics market and the innovation is happening first in terms of cell phones and embedded electronics.”

Technology first appearing in the consumer electronics market and then making its way into supercomputing is a stark contrast to a process that commonly works in the exact opposite manner.

In total, Roadrunner has 116,640 processing cores and the real challenge for programmers is figuring out how to keep all of those processing cores in use simultaneously to get the best performance. Roadrunner requires about 3 megawatts of power, or about enough electricity to run a large shopping center.

To put the processing power in perspective, Thomas P. D’Agostino of the National Nuclear Security Administration said that if all 6 billion people on Earth entered calculations on a calculator for 24 hours a day, seven days per week it would take 46 years to do what Roadrunner can do in one day.

How Roadrunner is cooled is unknown, IBM has recently moved to liquid cooling for its supercomputers, but Roadrunner appears to be air cooled.



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By EvilBlitz on 6/10/2008 2:02:35 AM , Rating: 2
Considering how complex this all is waiting for it to be proved beyond doubt generally will mean waiting till its too late(if they are right).
At many points in time you have to rely on educated guesses.

As for doing nothing that makes no sense at all. The earlier we make change the less drastic that change will have to be than if we leave it till later. Something called planning ahead?

One guy cant change anything? Rubbish, history is littered with examples of one man making a difference. Beside of which a good quote is "a waterfall starts but with 1 drop of water and look what comes from that."
Considering how some of the possible changes you could make actually save you money and or could make you healthier(eg energy efficient lightbulbs or just walking to the shop 500 meters down the road etc) you sounds very stubborn and lazy.

Baseless fear mongering? What would you do, sugarcoat all the possiblities and make it sound like something bad will happen but in the nicest possible way? I guarantee you if you do that you never EVER get a response.


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