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SC Conference - Activity Details
Performance Comparison of Intrepid, Ranger and Jaguar using Scientific Applications
Authors:
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Abhinav Bhatele
(University of Illinois at Urbana-Champaign)
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Lukasz Wesolowski
(University of Illinois at Urbana-Champaign)
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Eric Bohm
(University of Illinois at Urbana-Champaign)
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Edgar Solomonik
(University of Illinois at Urbana-Champaign)
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Laxmikant V. Kale
(University of Illinois at Urbana-Champaign)
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Posters Session
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Tuesday, 05:15PM - 07:00PM
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Room Oregon Ballroom Lobby
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Abstract:
Emergence of new parallel architectures presents new challenges for application developers. Supercomputers vary in processor speed, network topology, interconnect communication characteristics and memory subsystems. This paper presents a performance comparison of three of the fastest machines in the world: IBM's Blue Gene/P installation at ANL (Intrepid), the SUN-Infiniband cluster at TACC (Ranger) and Cray's XT4 installation at ORNL (Jaguar). Comparisons are based on three applications selected by NSF for the Track 1 proposal to benchmark the Blue Waters system: NAMD, MILC and a turbulence code, DNS. We present a comprehensive overview of the architectural details of each of these machines and compare across them. We hope that insights from this work will be useful to application developers who port and tune applications on these and future machines to obtain maximum performance.
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