ABSTRACT
Oak Ridge National Laboratory's (ORNL's) Leadership Computing Facility (OLCF) delivers the most powerful resources in the United States for open science. The OLCF has a proven track record of designing, constructing, and operating purpose-built, leadership-class computing systems to serve the open scientific user community and applying these systems to solve the most challenging and significant science and engineering problems of our time. The OLCF conducted extensive surveys of both the science needs of the user community and the technical realities of building a leadership computing system in 2011–2013. Titan meets the technical needs of the science programs to accomplish Department of Energy Office of Science (DOE-SC) goals over the useful life of this computer system and has a long-term architecture that will allow the investment in application software to be used over several generations of computer systems. ORNL manages the National Climate Computing Research Center (NCRC) for the National Oceanographic and Atmospheric Administration (NOAA).
