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The Performance Effect of Multi-core on ScientificApplications [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 2007.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Additional Creators
United States. Department of Energy and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The historical trend of increasing single CPU performancehas given way to roadmap of increasing core count. The challenge ofeffectively utilizing these multi-core chips is just starting to beexplored by vendors and application developers alike. In this study, wepresent some performance measurements of several complete scientificapplications on single and dual core Cray XT3 and XT4 systems with a viewto characterizing the effects of switching to multi-core chips. Weconsider effects within a node by using applications run at lowconcurrencies, and also effects on node-interconnect interaction usinghigher concurrency results. Finally, we construct a simple performancemodel based on the principle on-chip shared resource--memorybandwidth--and use this to predict the performance of the forthcomingquad-core system.
Report Numbers
E 1.99:lbnl--62662
lbnl--62662
Other Subject(s)
Note
Published through SciTech Connect.
05/14/2007.
"lbnl--62662"
": KJ0102000"
Cray User Group Meeting 2007, Seattle, WA, May7-10, 2007.
Wasserman, Harvey; Strohmaier, Erich; He, Yun; Shan, Hongzhang; Carter, Jonathan; Shalf, John.
Ernest Orlando LawrenceBerkeley NationalLaboratory, Berkeley, CA (US)
Funding Information
DE-AC02-05CH11231
KX0510
View MARC record | catkey: 14344620