Fast and Accurate P3M Cosmological Simulations Using a Hardware Accelerator

Details Fast and Accurate P3M Cosmological Simulations Using a Hardware Accelerator Fast and Accurate P3M Cosmological Simulations Using a Hardware Accelerator

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004apjs..153....1s&link_type=abstract

The Astrophysical Journal Supplement Series, Volume 153, Issue 1, pp. 1-7.

Astronomy and Astrophysics

Astronomy

1

Cosmology: Dark Matter, Cosmology: Large-Scale Structure Of Universe, Methods: N-Body Simulations

Scientific paper

We implemented a fast and accurate particle-particle particle-mesh (P3M) method using MDGRAPE-2, a hardware accelerator for arbitrary central forces. The results of cosmological N-body simulations using the MDGRAPE-2 P3M method agree with those using other P3M methods. We measured calculation times required for the MDGRAPE-2 P3M method on the system of a PC and one MDGRAPE-2 board. When we reduce memory requirement, the MDGRAPE-2 P3M method is ~10 and ~20 times faster than the adaptive and original P3M methods on the PC, respectively, under heavy particle clustering. When each P3M method is optimized for performance, the MDGRAPE-2 P3M method is as fast as the adaptive P3M method and ~10 times faster than the original P3M method.

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