A Japanese computer has taken first place on the Top 500 supercomputer list, ending China’s reign at the top after just six months. At 8.16 petaflops, the K computer is more powerful than the next five systems combined.
The K computer’s performance was measured using 68,544 SPARC64 VIIIfx CPUs each with eight cores, for a total of 548,352 cores, almost twice as many as any other system on the Top500 list. The computer is still under construction, and when it enters service in November 2012 will have more than 80,000 SPARC64 VIIIfx CPUs according to its manufacturer, Fujitsu.
Japan’s ascension to the top means that the Chinese Tianhe-1A supercomputer, which took the number 1 position in November last year, is now in second spot with its 2.57 petaflops. But China continues to grow the number of systems it has on the list, up from 42 to 62 systems. The change at the top also means that Jaguar, built for the US Department of Energy (DOE), is bumped down to third place.