Green Ranking of Supercomputers
The TOP500 list, which ranks the world’s supercomputers in terms of “teraflops,” or trillions of calculations per second, is released twice a year in June and November. That list is currently led by a supercomputer at DOE’s Lawrence Livermore National Laboratory (LLNL) with a peak speed of more than 596 teraflops. But the November 2007 list has competition from a newcomer, the Green500 list. The Green500 list ranks the 500 fastest supercomputers by megaflops per watt (how many thousands of calculations are performed per watt of energy used).At the top of the Green500 list is a research computer run by the United Kingdom’s Science and Technology Council with 357 megaflops per watt, while the fastest computer, the LLNL computer, falls to 22nd place in energy efficiency with only 205 megaflops per watt. See the TOP500 list, and the Green500 list.
