Japan answers China’s supercomputing surge
A new supercomputer from Japan whose performance passed the 8 petaflop milestone ended China's brief period atop the list of the world's fastest supercomputers.
The Japanese system also set another all-time Top 500 record -- a 10 megawatt power rating while running the Linpack test used to determine system performance. Despite the significant power consumption, the K Computer achieved "extraordinarily high computing efficiency," said RIKEN and Fujitsu, in a statement.
The new Top 500 leader, the K Computer housed at the Riken Advanced Institute for Computational Science in Kobe, Japan, runs 68,544, eight-core Sparc chips made by Japan-based Fujitsu. The system is expected to eventually run some 80,000 of the Sparc processors. Read more...
Japan takes back first place on Top 500 supercomputer list
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 (quadrillion floating-point calculations per second), 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 U.S. Department of Energy (DOE), is bumped down to third place. Read more...