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Abstract: We report on recent large astrophysical N-body simulations executed on the Intel Touchstone Delta system. We review the astrophysical motivation, and the numerical techniques, and discuss steps taken to parallelize these simulations. The methods scale as O(N log N ), for large values of N , and also scale linearly with the number of processors. The performance, sustained for a duration of 67 hours was between 5.1 and 5.4 Gflop/sec on a 512 processor system. 1 Astrophysical and numerical... (Update)
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...domain. Several varieties of domain decompositions have been used. In our first generation code, we used orthogonal recursive bisection [14]. This splits the work in half along the first spatial dimension of the entire domain, and then independently splits the two halves along...
...5. A parallel version of the FMM There are several ways of modelling Treecodes and Multigrid methods on MIMD parallel machines, [3,6,8,12,13,16,17,19]. SIMD implementations can be found in [7,14,21] 5.1 Implementation on the Meiko Computing Surface The Meiko Computing Surface,...
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BibTeX entry: (Update)
M. Warren and J. Salmon, "Astrophysical N-body simulations using hierarchical tree data structures," in Supercomputing '92, pp. 570--576, 1992. http://citeseer.ist.psu.edu/warren92astrophysical.html More
@inproceedings{ warren92astrophysical,
author = "Michael S. Warren and John K. Salmon",
title = "Astrophysical N-body Simulations Using Hierarchical Tree Data Structures",
booktitle = "Supercomputing",
pages = "570-576",
year = "1992",
url = "citeseer.ist.psu.edu/warren92astrophysical.html" }
Citations (may not include all citations):394 Solving Problems on Concurrent Processors (context) - Fox, Johnson et al. - 1988
277 A fast algorithm for particle simulations - Greengard, Rokhlin - 1987
156 Computer Simulation Using Particles (context) - Hockney, Eastwood - 1981
96 An efficient program for many-body simulation (context) - Appel - 1985
49 A hierarchical O(NlogN) force-calculation algorithm (context) - Barnes, Hut - 1986
27 Skeletons from the treecode closet - Salmon, Warren - 1992
9 CUBIX: Programming hypercubes without programming hosts (context) - Salmon - 1987
7 Using parallel computers for very large N-body simulations: .. - Salmon, Quinn et al. - 1990
6 Structure in the COBE DMR first year maps (context) - Smoot - 1992
4 Run-time Partitioning of Scientific Continuum Calculations R.. (context) - Baden - 1987
3 A parallel treecode for gravitational N-body simulations wit.. (context) - Warren, Salmon - 1991
3 The shape of the invisible halo: N-body simulations on paral.. (context) - Warren, Zurek et al. - 1991
2 Dark haloes formed via dissipationless collapse: I. shapes a.. (context) - Warren, Quinn et al. - 1992
2 Preliminary separation of galactic and cosmic microwave emis.. (context) - Bennett - 1992
2 Nbody simulations of a4 isophote deviations in elliptical ga.. (context) - Fullagar, Quinn et al. - 1992
2 Dynamics of Globular Cluster Systems (context) - Grillmair - 1992
2 Large cosmological N-body simulations (context) - Bertschinger, Gelb - 1991
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