Supercomputer with 68,000+ CPUs is world's fastest

The Fujitsu "K computer" has 672 racks, 68,544 CPUs, and leads TOP500.Org's 37th list of world's fastest supercomputers.

According to TOP500.Org, the Fujitsu-built "K computer" in Kobe, Japan, is currently the world's fastest supercomputer. Able to complete more than 8 quadrillion calculations per second (petaflop/s), the K computer uses 672 computer racks and 68,544 SPARC64 VIIIfx CPUs--with eight cores each.

Although only the K computer is only half finished, it was able to achieve a LINPACK benchmark performance of 8.162 petaflops. When completed in 2012, the K computer will have over 800 racks, and be designed to reach 10 petaflops.

Fujitsu K computer - Credit: Fujitsu

The K Computer has nearly twice as many cores as any other supercomputer on the TOP500 list and is more powerful than the next five machines combined. It's housed at the RIKEN Advanced Institute for Computational Science.

Top 10 Fastest Supercomputers

K computer rack - Credit: Fujitsu

TOP500.Org has been ranking the world's supercomputers since 1993 and updates its list supercomputers twice a year--in June and November. The following 10 systems top the organization's 37th list (released June 2011):

  1. "K computer" (RIKEN Advanced Institute for Computational Science, Japan)
  2. Tianhe-1A (National Supercomputing Center in Tianjin, China)
  3. Jaguar (Oak Ridge National Laboratory, U.S.)
  4. Nebulae (National Supercomputing Center, China)
  5. Tsubame 2.0 (Tokyo Institute of Technology, Japan)
  6. Cielo (Los Alamos National Laboratory, U.S.)
  7. Pleiades (NASA Ames Research Center, U.S.)
  8. Hopper (National Energy Research Scientific Computing Center , U.S.)
  9. Tera 100 (Commissariat à l'énergie atomique et aux énergies alternatives, France)
  10. Roadrunner (Los Alamos National Laboratory, U.S.)

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