Copyright 2012. The Korean Institute of Information Scientists and Engineers pISSN: 1976-4677 eISSN: 2093-8020 Regular Paper Journal of Computing Science and Engineering, Vol. 6, No. 4, December 2012, pp. 280-286 High Performance Computing: Infrastructure, Application, and Operation Byung-Hoon Park * and Youngjae Kim Computing and Computational Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, TN, USA parkbh@ornl.gov, kimy1@ornl.gov Byoung-Do Kim Advanced Research Computing, Virginia Tech, Blacksburg, VA, USA bdkim@vt.edu Taeyoung Hong and Sungjun Kim Supercomputing Center, Korea Institute of Science and Technology Information, Daejeon, Korea tyhong@kisti.re.kr, sjkim@kisti.re.kr John K. Lee Appro Inc., Milpitas, CA, USA johnlee@appro.com Abstract The last decades have witnessed an increasingly indispensible role of high performance computing (HPC) in science, business and financial sectors, as well as military and national security areas. To introduce key aspects of HPC to a broader community, an HPC session was organized for the first time ever for the United States and Korea Conference (UKC) during 2012. This paper summarizes four invited talks that each covers scientific HPC applications, large-scale parallel file systems, administration/maintenance of supercomputers, and green technology towards building power effi- cient supercomputers of the next generation. Category: Embedded computing, Green computing Keywords: High performance computing; Supercomputer; Parallel file system; Green technology I. INTRODUCTION A supercomputer is a computer that integrates the most advanced technologies available today, thus considered to be at the cutting edge of computational capability. Sci- entists and engineers incessantly try to push the frontiers with technological innovations and renovations. High performance computing (HPC) applies supercomputers to highly compute intensive problems of national con- cerns (a narrower definition of HPC may have a different meaning. However, we use HPC and supercomputing interchangeably in this paper). In this regard, HPC tech- Received 21 October 2012, Revised 28 October 2012, Accepted 4 November 2012 *Corresponding Author Open Access http://dx.doi.org/10.5626/JCSE.2012.6.4.280 http://jcse.kiise.org This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/ by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.