Housed at the Department of Energy's Lawrence Livermore National Laboratory in California, Sequoia boasts a speed of 16.32 petaflops. It topped the June edition of the Top 500 list.
Sequoia is a National Nuclear Security Administration supercomputer, used for nuclear weapons research. The NNSA uses the IBM (Fortune 500) computer to model weapons performance and extend the life of aging weapons systems. ,
Work on designing the supercomputer began more than three years ago, and the system went online in April.
The Tian supercomputer can produce a record 20 quadrillion calculations per second.