Comments on PPPM, FMM, and the Ewald Method for Large Periodic Coulombic Systems
E. L. Pollock, Jim Glosli
Abstract
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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