The Department of Energy’s National Nuclear Security Administration has tapped IBM to build a massive new supercomputer that will deliver a record-breaking 20 petaflops of computing power. The proposed supercomputer is nicknamed “Sequoia,” and it’ll come with 500 teraflop sidekick, Dawn. Both computers will be delivered to the Lawrence Livermore National Laboratory where, according to NNSA, they’ll “help continue to ensure the safety and reliability of the nation’s aging nuclear deterrent.”