2.1 Summit and Sierra: Designing AI/HPC Supercomputers

The Summit and Sierra Supercomputer Systems, deployed in 2018 at the Department of Energy (DOE) National Laboratories, Oak Ridge (ORNL) and Lawrence Livermore (LLNL), provide a significant increase in computing capability relative to the predecessors, and represent a major step in the path to Exascale computing. Arising from the DOE CORAL program (https://asc.llnl.gov/CORAL/), Summit and Sierra were listed as #1 and #2, respectively, in the November 2018 version of the Top500 list (https://www.top500.org/lists/2018/11/).