N-body Simulation of Galaxy Formation on GRAPE-4 Special-Purpose Computer
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We report on resent N-body simulations of galaxy formation performed on the GRAPE-4 (GRAvity PipE) system, a special-purpose computer for astrophysical N-body simulations. We review the astrophysical motivation, the algorithm, the actual performance, and the price per performance. The performance obtained is 332 Gflops averaged over 185 hours for a simulation of a galaxy formation with 786,400 particles. The price per performance obtained is 4,600 dollars per Gflops. The configuration used for the simulation consists of 1,269 pipeline processors and has a peak speed of 663 Gflops.
9 pages, 5 figures, Proceedings of Supercomputing 96, 1996 Gordon Bell Prize (performance), also available at http://scxy.tc.cornell.edu/sc96/proceedings/SC96PROC/FUKUSHIG/INDEX.HTM (SC96) or at http://grape.c.u-tokyo.ac.jp/pub/people/fukushig/paper/list.html (Tokyo)
9 pages, 5 figures, Proceedings of Supercomputing 96, 1996 Gordon Bell Prize (performance), also available at http://scxy.tc.cornell.edu/sc96/proceedings/SC96PROC/FUKUSHIG/INDEX.HTM (SC96) or at http://grape.c.u-tokyo.ac.jp/pub/people/fukushig/paper/list.html (Tokyo)