DocumentCode
3311309
Title
Astrophysical N -body simulations using hierarchical tree data structures
Author
Warren, Michael S. ; Salmon, John K.
Author_Institution
Los Alamos Nat. Lab., NM, USA
fYear
1992
fDate
16-20 Nov 1992
Firstpage
570
Lastpage
576
Abstract
The authors report on recent large astrophysical N -body simulations executed on the Intel Touchstone Delta system. They 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 h, was between 5.1 and 5.4 Gflop/s on a 512-processor system
Keywords
N-body problems; astrophysics computing; galaxies; stellar dynamics; tree data structures; Intel Touchstone Delta system; astrophysical N-body simulations; astrophysical motivation; galaxy; hierarchical tree data structures; performance; stellar dynamics; Astrophysics; Electromagnetic spectrum; Equations; Gamma rays; Laboratories; Physics; Radio frequency; Shape measurement; Spirals; Tree data structures;
fLanguage
English
Publisher
ieee
Conference_Titel
Supercomputing '92., Proceedings
Conference_Location
Minneapolis, MN
Print_ISBN
0-8186-2630-5
Type
conf
DOI
10.1109/SUPERC.1992.236647
Filename
236647
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