Fast and accurate P3M cosmological simulations using a hardware accelerator

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Abstract

We implemented a fast and accurate particle-particle particle-mesh (P 3M) 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 P 3M method.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalAstrophysical Journal, Supplement Series
Volume153
Issue number1
DOIs
Publication statusPublished - Jul 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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