FFTW v2.1

Overview

FFTW (The Fastest Fourier Transform in the West) is a library of routines which evidence shows can out perform some vendor specific FFT routines.

Restrictions on Use

There are no restrictions on use as free software.

Set Up Procedure

To gain access to the libraries you need to load the fftw module.

Running the Code

FFTW is a library and as such you will need to link the library at link time (-lfftw). On the altix, if you are running with v7.1 of the intel compiler you will need add the location of the library using the -L of the linker (compiler). In order to discover what this is please load the module and examine your library path to discover the appropriate location.

Further Information

Further information is available:

• At the FFTW home page.