FFTW

Category: Libraries-Math-FFT

Description

The Fastest Fourier Transform in the West (FFTW) is a C subroutine library for computing the Discrete Fourier Transform (DFT) in one or more dimensions, of both real and complex data, and of arbitrary input size.

Many benchmarks show that FFTW's performance is typically superior to that of other publicly available FFT software. Moreover, FFTW's performance is portable: the program will perform well on most architectures without modification.

For more information see the FFTW home page.

Use

Some FFTW library versions are provided by Cray and some are provided by the NICS. In either case, FFTW is accessed via a module. See the modules page for more information on modules. For more information on Cray FFTs, please see the "intro_fft" man page online; i.e., do a "man intro_fft". This will give you information on how to use Cray's FFTW and some other FFT libraries. In particular, there are "intro_fftw2" and "intro_fftw3" man pages for FFTW2 and FFTW3, respectively.

  module avail fftw
  module load fftw/2.1.5
  cc -o example example.c -ldfftw
For FFTW3 libraries, you have to load the appropriate module and then the compilers will automatically find include and library files.

  module avail fftw
  module load fftw/3.1.2
  cc -o example example.c

Support

This package has the following support level : Supported

Available Versions

Version Available Builds
pgi pathscale gnu Other
2.1.5 vendor
3.1.2
v
v
v
u
u
v
3.1.1 vendor