The most energy-efficient supercomputer on the new Green500 List isn’t the top machine on the biannual listing of the most powerful supercomputers in the world — not by a long shot.
IBM’s BlueGene/P system, which is running at the Daresbury Laboratory of the Science and Technology Facilities Council, came out on top of the first official ranking of the Green500. The Daresbury Laboratory is one of seven national research councils in the U.K. The supercomputer, though a major player on the new green list, is ranked a middling 121 on the latest Top500 List, which was released Nov. 11 at SCO7, a supercomputing conference in Reno, Nev.
The Green500 List ranks the machines that make the Top500 List by their energy efficiency. The Top500 List ranks the top supercomputers on the planet based on performance.