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A C-subroutine library for computing discrete Fourier transforms |
Description
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Prerequisites
Modules
Example Jobscripts
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FFTW is a C subroutine library for computing the discrete Fourier transform (DFT) in one or more dimensions,
Read more on the fftw3 home page
For a manual consult the online manual or download the pdf
Versions
| Version | Build Date | Installation Path | modulefile | compiler |
|---|---|---|---|---|
| Fftw3 /3.3.7 | unknown | /cm/shared/apps/fftw/openmpi | fftw3/openmpi/gcc/64/3.3.7 | gcc |
| Fftw3 /3.3.8 | 01-feb-2019 | /sw/numerics/fftw3/gcc.7.5.0/3.3.8/ | gcc/7.5.0 | |
| Fftw3 /3.3.8 | 01-feb-2019 | /sw/numerics/fftw3/gcc.8.3.0/3.3.8/ | gcc/8.3.0 | |
| Fftw3 /3.3.8 | 16-feb-2020 | /sw/numerics/fftw3/ompi/gcc.9.2.0/3.3.8/ | fftw3/ompi/gcc/3.3.8 | gcc/9.2.0, openmpi/gcc.9/3.1.5 |
| Fftw3 /3.3.8 | 01-feb-2019 | /sw/numerics/fftw3/impi/gcc.9.2.0l/3.3.8/ | fftw3/impi/gcc/3.3.8 | gcc/9.2.0, impi/2018.5 |
| Fftw3 /3.3.8 | 01-feb-2019 | /sw/numerics/fftw3/impi/intel/3.3.8/ | fftw3/impi/intel/3.3.8 | intel/19.0.1 impi/2018.5 |
The single, long-double, omp and threads -enabled version is installed. The ompi and the impi - installation contain the serial libraries too. Both, the shared and the static version are available.
For fftw3 with INTEL compilers, please consider also to use the MKL! Read more
Modules and Usage at HLRN
The library is included in several software packages. A module file gives access to a few binaries, fftwf-wisdom, fftwl-wisdom. fftw-wisdom. fftw-wisdom-to-conf.
module show fftw3/version
module help fftw3/version
deliver details on paths and environmental variables.
module load fftw3/version
defines environmental variables:
- PATH
- LD_RUN_PATH
- PKG_CONFIG_PATH
- LIBRARY_PATH
The modules do not have any effect during runtime.
Precision
You may link to -lfftw3f (single) or -lfftw3l (long-double) instead of or in addition to -lfftw3 (double).
You can see all provided versions directly after you loaded a FFTW module with: ls ${LIBRARY_PATH%%:*}
Installation at HLRN
Fftw3 is build from source. The current version is build with several compilers. High end optimisation is used. read more
All libraries passed through the basic checks.
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