A special-purpose N-body machine GRAPE-1

Details A special-purpose N-body machine GRAPE-1 A special-purpose N-body machine GRAPE-1

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990cophc..60..187i&link_type=abstract

Computer Physics Communications, Volume 60, Issue 2, p. 187-194.

Physics

25

Scientific paper

We have designed and built GRAPE-1 (GRAvity PipE 1), a special-purpose computer for astrophysical N-body calculations. It is designed as a back-end processor that calculates the gravitational interaction between particles. All other calculations are performed on a host computer connected to GRAPE-1. For large-N calculations (N>~104), GRAPE-1 achieves about 100 Mflops-equivalent in one board of size about 40 by 30 cm at the power of 2.5 watt. The pipelined architecture of the GRAPE-1 which is specialized and optimized for the N-body calculation is the key to the high performance. The design and construction of the GRAPE-1 system are discussed.

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