Just a few years ago, teraflops (1012
floating point operations/second) and
terabytes (1012 bytes of secondary storage)
defined state-of-the-art advanced
computing. Today, those same values
represent a desk-side PC with Nvidia
or Intel Xeon Phi accelerator and local
storage. Advanced computing is now
defined by multiple petaflops (1015 floating
operations/second) supercomputing
systems and cloud data centers with
many petabytes of secondary storage.