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Versions and Availability

About the Software

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). We believe that FFTW, which is free software, should become the FFT library of choice for most applications.


On SuperMike, Philip abd Eric, softenv defines some variables which point at the library home directory. Use soft-dbq to determine it's name, then use it to add a link option to your build. You may see something like this (the output has been edited for brevity):

$ soft-dbq +fftw-3.3.3-Intel-13.0.0-openmpi-1.6.2

This is all the information associated with
the key or macro +fftw-3.3.3-Intel-13.0.0-openmpi-1.6.2.
. . .
    fftw_HOME = /usr/local/packages/fftw/3.3.3/Intel-13.0.0-openmpi-1.6.2

On SuperMIC and QB-2, module defines the variables. Use module show to show the names.

$ module show fftw/3.3.3/INTEL-140-MVAPICH2-2.0
setenv LHPC_ROOTFFTW /usr/local/packages/fftw/3.3.3/INTEL-140-MVAPICH2-2.0 

The compile and build options to use would be:

       -L${fftw_HOME}/lib -lname


       -L${LHPC_ROOTFFTW}/lib -lname

The include files to use, and the library name depend on features needed. For more information, please refer to the materials in the Resources section.


Last modified: September 10 2020 11:58:50.