Difference between revisions of "FFTW"
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|fields=Computational science; Performance library | |fields=Computational science; Performance library | ||
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| + | [http://www.fftw.org/ {{PAGENAME}}] is a {{#show: {{PAGENAME}} |?description}}. | ||
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| − | + | == Overview == | |
| + | FFTW (Fastest Fourier Transform in the West) is a high performance library to calculate discrete Fourier transformations. The library is freely available and typically easy to install, if it is not done by the HPC centre you are using. | ||
| − | The library contains parallel versions using either of [[pthreads]], [[OpenMP]] or [[MPI]]. Besides the current version 3.x, there is the older version 2.x, which | + | The software is self optimising, trying several algorithms at run time and choosing the best performing one. To achieve its high computational speed latest version supports the [[SSE]] and [[AVX]] instructions of the latest x86-processors. The library provides a native [[C]]-API. In [[Fortran]]-2003 this is easily accessed using the C-bindings which are part of the language standard. For older versions of Fortran the library also contains a Fortran interface. To avoid data alignment issues, which could inhibit the performance, using the Fortran-2003 bindings to the C-API is encouraged. |
| + | |||
| + | The library contains parallel versions using either of [[pthreads]], [[OpenMP]] or [[MPI]]. Besides the current version 3.x, there is the older version 2.x, which has a different application interfaces. It is not recommended to use version 2.x for new developments, however it is still widely used in legacy code. | ||
== License == | == License == | ||
Latest revision as of 16:59, 14 September 2012
FFTW is a Freely available high performance library to perform fast Fourier transformations.
Contents
Overview
FFTW (Fastest Fourier Transform in the West) is a high performance library to calculate discrete Fourier transformations. The library is freely available and typically easy to install, if it is not done by the HPC centre you are using.
The software is self optimising, trying several algorithms at run time and choosing the best performing one. To achieve its high computational speed latest version supports the SSE and AVX instructions of the latest x86-processors. The library provides a native C-API. In Fortran-2003 this is easily accessed using the C-bindings which are part of the language standard. For older versions of Fortran the library also contains a Fortran interface. To avoid data alignment issues, which could inhibit the performance, using the Fortran-2003 bindings to the C-API is encouraged.
The library contains parallel versions using either of pthreads, OpenMP or MPI. Besides the current version 3.x, there is the older version 2.x, which has a different application interfaces. It is not recommended to use version 2.x for new developments, however it is still widely used in legacy code.
License
License: Free.
GNU GPL version 2
Availability
| Resource | Centre | Description |
|---|---|---|
| Abisko | HPC2N | capability resource of 153 TFLOPS with full bisectional infiniband interconnect |
| Alarik | LUNARC | throughput cluster resource of 40 TFLOPS |
| Aurora | LUNARC | throughput/general purpose cluster resource |
| Platon | LUNARC | throughput cluster resource of 26 TFLOPS |
