We describe an implementation to solve Poisson's equation for an isolated system on a unigrid mesh using FFTs. The method solves the equation globally on mesh blocks distributed across multiple processes on a distributed-memory parallel computer. Test results to demonstrate the convergence and scaling properties of the implementation are presented. The solver is offered to interested users as the library PSPFFT.
Cite
@article{arxiv.1106.0557,
title = {Parallel FFT-based Poisson Solver for Isolated Three-dimensional Systems},
author = {Reuben D. Budiardja and Christian Y. Cardall},
journal= {arXiv preprint arXiv:1106.0557},
year = {2011}
}
Comments
15 pages, 19 figures, accepted for publication in Computer Physics Communications