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Free parallel fast Poisson solver. Requires FFTW3 and optionally PFFT.
License: Other
This project forked from ladaf/poisfft
Free parallel fast Poisson solver. Requires FFTW3 and optionally PFFT.
License: Other
The PoisFFT library solves the Poisson equation on a uniform Cartesian grid using the Fast Fourier Transform. It calls the library FFTW3 and (if MPI is used) also PFFT. The description is available in article Vladimir Fuka: PoisFFT - a free parallel fast Poisson solver, Applied Mathematics and Computation, 2015 available online: http://dx.doi.org/10.1016/j.amc.2015.03.011 preprint: http://arxiv.org/abs/1409.8116 Please cite this article when using the library for your research. The Poisson equation used is \Delta \phi = b where `\phi` and `b` are functions of 1, 2 or 3 spatial dimensions. For instruction how to use the API after installation see `usage_Fortran.txt`, `usage_C.txt` and `usage_C++`. For examples see `testpoisson.f90`, `testpoisson.c` and `testpoisson.cc`. The installation is done using SConstruct, a Python based build environment, if you do not have it, you must install it first. For compiling the library use scons or scons mpi=yes in the `src` directory. For compiling of the test programs add `test` after the above command. If you use other compilers than GCC (gfortran, gcc, g++), add argument comp, i.e., scons comp=intel or scons comp=sun For other compilers you will have to add the options in the `SConstruct` file. If you want to disable OpenMP, use scons openmp=no With MPI it is disabled automatically, but can be explicitly enabled by scons mpi=yes openmp=yes for hybrid MPI/OpenMP parallelization.
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