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FFTW is a C subroutine library for computing the discrete Fourier transform (DFT) in one or more dimensions, of arbitrary input size, and of both real and complex data (as well as of even/odd data, i.e. the discrete cosine/sine transforms or DCT/DST).


To make this library available, run the following:

module load libs/fftw/3.3.5/gcc-4.9.4

Installation notes

This section is primarily for administrators of the system.

Version 3.3.5

This was compiled with GCC 4.9.4 (for compatibility with CUDA, which doesn’t support GCC >= 5.0.0). The following were enabled at compile-time:

  • Threading (inc. OpenMP)

  • Shared-library support

  • SIMD (specifically, AVX2)

First, download, configure, build, test and install using this script.

During the testing stage you should see lots of numerical output plus:

         FFTW transforms passed basic tests!

         FFTW threaded transforms passed basic tests!

Next, this modulefile as /usr/local/modulefiles/libs/fftw/3.3.5/gcc-4.9.4