[petsc-dev] P3DFFT is an open-source numerical library providing highly scalable implementation of 3D spectral transforms

[Matthew Knepley]

The blurb should also answer the question, Why do we need another FFT
library?

   Matt


On Wed, Aug 20, 2014 at 1:53 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:

>
>
> From: Dmitry Pekurovsky dmitry at sdsc.edu
> Date: August 12, 2014
> Subject: Library for spectral transforms in 3D for parallel machines
>
> P3DFFT is an open-source numerical library providing highly
> scalable implementation of 3D spectral transforms namely Fast
> Fourier Transform (FFT), with an option to combine it with
> cosine/sine/Chebyshev/empty transform in the third dimension. (The
> empty transform allows the user to substitute their own custom
> transform in the third dimension. This can be useful in
> applications such as inhomogeneous wall bounded turbulence.) P3DFFT
> implements 2D domain decomposition which allows it to overcome a
> scalability restriction inherent in 1D decomposition. This approach
> has shown good scalability up to 131,072 cores.
>
> A new version of P3DFFT 2.7.1 is now available. The project Home
> Page is http://code/google.com/p/p3dfft where instructions for
> obtaining the source code are provided. Installation instructions
> and a User Guide are also available.
>
> P3DFFT features include real-to-complex and complex-to-real
> transforms, in-place transforms, pruned transforms (with less than
> full input or output), and multi-variable transforms. The package
> includes example programs in Fortran and C. This is a project in
> active development, with a user mailing list, a wiki page and a
> version control system. P3DFFT is considered community software and
> is being installed in public space at many supercomputer centers.
> Contributions and feedback from users are welcome.
>



-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
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