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NNSA’s Cielo, Roadrunner Supercomputers Ranked as World’s Most Powerful Supercomputers

Two NNSA supercomputers are ranked in the top ten of the TOP500 List of the world’s most powerful supercomputers. The list was released today.

Both NNSA computers are located at Los Alamos National Laboratory (LANL): Cielo is ranked number six on the list and Roadrunner is ranked number 10. Five other supercomputers housed at NNSA sites are ranked in top 26 of the TOP500 list.

As part of NNSA’s mission to extend the lifetime of nuclear weapons in the stockpile, the Advanced Simulation and Computing (ASC) Campaign provides NNSA with leading edge, high-end simulation capabilities. The ASC program helps NNSA to meet nuclear weapons assessment and certification requirements, including: weapon codes, weapon science, computing platforms, and supporting infrastructure.

Cielo, a petascale resource for conducting NNSA weapons simulations in the 2011-2015 timeframe, can achieve more than one quadrillion floating point operations per second. Earlier this year, the Cielo system was upgraded from 1.03 petaFLOPS (72 cabinets) to 1.37 petaFLOPS (96 cabinets). Cielo is operated by the New Mexico Alliance for Computing at Extreme Scale (ACES), a collaboration between LANL and Sandia National Laboratories.

Roadrunner has a peak performance of 1.38 petaflops and was the first supercomputer in the world to perform at a sustained petaflops rate on a scientific calculation. Roadrunner has a unique architecture that was designed to explore new computing technology, and is an important stepping stone to even larger systems in the future.

The top 26 include Number 15: The Appro Xtreme-X, LLNL; Number 17: BlueGene/Q, Lawrence Livermore National Laboratory (LLNL); Number 22: BlueGene/L, LLNL; Number 24: Red Sky, Sandia/National Energy Laboratory; Number 26: Dawn - Blue Gene/P, LLNL.

The TOP500 list is compiled by Hans Meuer of the University of Mannheim, Germany; Erich Strohmaier and Horst Simon of NERSC/Lawrence Berkeley National Laboratory; and Jack Dongarra of the University of Tennessee, Knoxville. To see the entire list, see: