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Scalability of a Low-Cost Multi-Teraflop Linux Cluster for High-End Classical Atomistic and Quantum Mechanical SimulationsScalability of a low-cost, Intel Xeon-based, multi-Teraflop Linux cluster is tested for two high-end scientific applications: Classical atomistic simulation based on the molecular dynamics method and quantum mechanical calculation based on the density functional theory. These scalable parallel applications use space-time multiresolution algorithms and feature computational-space decomposition, wavelet-based adaptive load balancing, and spacefilling-curve-based data compression for scalable I/O. Comparative performance tests are performed on a 1,024-processor Linux cluster and a conventional higher-end parallel supercomputer, 1,184-processor IBM SP4. The results show that the performance of the Linux cluster is comparable to that of the SP4. We also study various effects, such as the sharing of memory and L2 cache among processors, on the performance.
Document ID
20030020950
Acquisition Source
Ames Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Kikuchi, Hideaki
(Louisiana State Univ. Baton Rouge, LA, United States)
Kalia, Rajiv K.
(University of Southern California Los Angeles, CA, United States)
Nakano, Aiichiro
(University of Southern California Los Angeles, CA, United States)
Vashishta, Priya
(University of Southern California Los Angeles, CA, United States)
Shimojo, Fuyuki
(Hiroshima Univ. Japan)
Saini, Subhash
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2003
Subject Category
Computer Operations And Hardware
Meeting Information
Meeting: International Parallel and Distributed Computing Conference
Location: Nice
Country: France
Start Date: April 22, 2003
End Date: April 26, 2003
Distribution Limits
Public
Copyright
Public Use Permitted.
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