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How powerful is China's supercomputer?
Chinese researchers have developed a super-fast machine that blows away its American competition
A Chinese engineer walks between the racks of the Tianhe-1A supercomputer, which is purportedly 1.4 times faster than its nearest rival.
A Chinese engineer walks between the racks of the Tianhe-1A supercomputer, which is purportedly 1.4 times faster than its nearest rival.
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s in so many other areas, China is surging ahead of the rest of the world in supercomputing. Last week, The New York Times reported that the National University of Defense Technology in Tianjin has developed a superfast machine, the Tianhe-1A, that easily outpaces the current, American leader — thus "giving China bragging rights as a technology superpower." Is this a portentous moment for the rest of the world, or mostly just hype?

Just how fast is China's new machine?
The National University of Defense Technology's supercomputer outdoes all its competitors, performing equations at a breathtakingly fast rate. The Tianhe-1A  "can reach 2.5 petaflops," which is "a measure of calculating speed ordinarily translated into a thousand trillion operations per second." That's 1.4 times faster than the previous, record-holder, which is housed at Oak Ridge National Laboratory in Tennessee.

How did they build it?
"Modern supercomputers are built by combining thousands of small computer servers and using software to turn them into a single entity," says The Times. The Chinese accomplished this by using American-made chips from Intel and Nvidia, then building a high-speed "interconnect" system that enables data to flow back and forth between networks. The Chinese also strayed from the usual supercomputer formula by combining GMUs (graphics processing units) and CPUs (central processing units), which helps speed up computing.

What will it actually do?
Supercomputers like the Tianhe-1A can be used to solve complex mathematical equations and perform many other tasks, "including simulating commercial products like new drugs as well as defense-related applications such as weapons design and breaking codes."

Is this just a one-off stunt?
It seems unlikely. Unlike Japan, which created a stir (and helped stir U.S. development) by creating a supercomputer that briefly held the world's top spot in 2002, China seems devoted to making ever-faster machines. The developments in Tianjin are "
part of a multi-year strategy by China to develop a range of machines to create a dominant position in both military and commercial applications."

So should the U.S. be worried?
Jack Dongarra, who helps oversee the supercomputer in Tennessee, says we should. "This is a wake-up call," he says. "We need to realize that other countries are capable of doing this. We're losing an advantage." But Boston University computer science professor Azer Bestavros questions "whether the emphasis on the 'fastest' supercomputer should be all that important," and wonders whether "the performance of a single machine is a bit misleading," especially because "we are increasingly moving towards more distributed forms of computing, including the use of grid and cloud computing infrastructures."

Sources: The New York Times, Wired, CNet, Forbes, Wall Street Journal, NPR

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