FFTW

General Information

Short Description: Routines for discrete Fourier transforms

Long Description:
FFTW is a collection of C routines for computing the discrete Fourier transform. A parallel version using mpi also is implemented.

Category: Mathematics and Statistics

Vendor/Developer:

Vendor Website: http://www.fftw.org/

Software Website: http://www.fftw.org/doc/

Programming Language:

Terms of Use:

Installation Information

Version: 2.1.5 and 3.1.1      Version Date: 0000-00-00

Installed Site: National Center for Supercomputing Applications

Installed Platform: SGI Altix

Point of Contact: Greg Bauer

Installation Status: Planned

Installation Date: 2005-03-25

Usage Information

Usage URL:

Usage Information:
FFTW is installed in /usr/apps/math/fftw.

2.1.5 - /usr/apps/math/fftw/fftw-2.1.5
with builds mpt-gnu, mpt-intel80 and mpt-intel81

3.1.1 - /usr/apps/math/fftw/fftw-3.1.1
with builds with the gnu and intel90 compilers

NOTE: When the softenv keys are installed for FFTW, you can use the environment variables provided by using the keys as shown below.

Version 2.1.5

Version 2.1.5, which is the most current version to have MPI FFT routines, was compiled with both the Intel 9.0 compiler, GNU gcc.
To use FFTW latest 2.X.X:

Intel: soft +fftw-2-intel-mpt

GNU: soft +fftw-2-gnu

Compiling and Linking
Include files: -I $FFTW_HOME/include

Libraries: -L $FFTW_HOME/lib

FFTW was compiled with the prefix labeled precision libraries. 'd' is double and 's' is single.

Complex Transofrms

serial ifort -I $FFTW_HOME/include -o foo foo.f -L $FFTW_HOME/lib -ldfftw
threaded ifort -I $FFTW_HOME/include -o foo foo.f -L $FFTW_HOME/lib -ldfftw_threads -ldfftw -lpthreads
MPI ifort -I $FFTW_HOME/include -o foo foo.f -L $FFTW_HOME/lib -ldfftw_mpi -ldfftw -lmpi

Real Transforms
(use the same include and library flags as above)
-ldrfftw -ldfftw
-ldrfftw_threads -ldfftw_threads -ldrfftw -ldfftw
-ldrfftw_mpi -ldfftw_mpi -ldrfftw -lfftw -lmpi

Version 3.1.1

Version 3.1.1, which currently does not have MPI enabled FFT routines, was built with Intel 9.0 compiler and with the GNU compiler.

To use FFTW 3:

Intel compiler: soft add +fftw-3-intel-mpt

GNU compiler: soft add +fftw-3-gnu

Compiling and Linking:
serial ifort -I $FFTW_HOME/include -o testf testf.f -L$ FFTW_HOME/lib -lfftw3
threaded ifort -I $FFTW_HOME/include -o testf testf.f -L$ FFTW_HOME/lib -lfftw3_threads -lfftw3

For single precision, use -lffw3f.

NOTE: Version 8.0 of Intel's Math Kernel Library (MKL) provides a wrapper to FFTW3 so that FFTW users can also try using MKL's DFTI routines by recompiling and linking. See the software repository entry for MKL for more information.

User Guide Homepage:

License Information

Number of Licenses:

User Fee:

Type of License: N/A

Type of Installation: Available to all allocated users

Distribution Information: