Comments on PPPM, FMM, and the Ewald Method for Large Periodic Coulombic Systems

Details Comments on PPPM, FMM, and the Ewald Method for Large Periodic Coulombic Systems Comments on PPPM, FMM, and the Ewald Method for Large Periodic Coulombic Systems

1995-11-29

arxiv.org/abs/cond-mat/9511134v1

Physics

Condensed Matter

31 pages + 3 figures

Scientific paper

10.1016/0010-4655(96)00043-4

The three most common methods, Ewald, fast multipole (FMM) and the particle-particle particle-mesh (PPPM), used to compute the interactions in many body Coulombic systems are compared for single and multi-processor machines. The Ewald method is recommended for systems of a few hundred particles per processor or less. For larger systems the PPPM method is suggested. The FMM is slower and more difficult to code efficiently.

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