Lawrence Livermore National Laboratory



Picture of the Simulation Facility

Sustainable Stockpile Stewardship

The B453 Simulation Facility houses the new IBM 20-petaflop supercomputing system, Sequoia, which will help continue to ensure the safety and reliability of the nation's aging nuclear deterrent. Sequoia is located at Lawrence Livermore National Laboratory and was deployed in the fall of 2012. Sequoia's initial delivery system, Dawn, a 500 teraFLOPS BlueGene/P system, is currently being used to lay the applications foundation for multi-petaFLOPS computing on Sequoia.

Sequoia is one of the most powerful supercomputers in the world and will be focused on strengthening the foundations of predictive simulation by running very large suites of complex simulations for uncertainty quantification (UQ) studies. In addition, the machines will be used for weapons-science calculations necessary to build more accurate physical models. This work is a cornerstone of NNSA's Stockpile Stewardship program to ensure the safety, security, and reliability of the U.S. nuclear-weapons stockpile today and into the future without underground testing.

Sequoia was officially unveiled by IBM in a brief ceremony at the start of SC11, the annual supercomputing conference. Kim Cupps, leader of the High Performance Computing (HPC) division, representing the Laboratory, paid tribute to the longstanding partnership with IBM and the computing breakthroughs that have resulted. [See press release and more about Sequoia.]