NNSA's three national laboratories house some of the world's fastest supercomputers: Sequoia and Cielo.
ASC simulations are central to U.S. national security, as they provide a computational surrogate for nuclear testing. NNSA's ability to model the extraordinary complexity of nuclear weapons systems is essential to establish confidence in the performance of our aging stockpile. ASC tools enable nuclear weapons scientists and engineers to gain a comprehensive understanding of the entire weapons lifecycle from design to safe processes for dismantlement. Also, through close coordination with other government agencies, ASC tools also play an important role in supporting nonproliferation efforts, emergency response, and nuclear forensics.