Summit or OLCF-4 is a supercomputer developed by IBM for use at Oak Ridge National Laboratory, which as of November 2018 is the fastest supercomputer in the world, capable of 200 petaflops.[3] Its current LINPACK benchmark is clocked at 148.6 petaflops.[4] As of November 2018, the supercomputer is also the 3rd most energy efficient in the world with a measured power efficiency of 14.668 GFlops/watt.[5] Summit is the first supercomputer to reach exaop (exa operations per second) speed, achieving 1.88 exaops during a genomic analysis and is expected to reach 3.3 exaops using mixed precision calculations.[6]