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| author | Chris Cannam |
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| date | Wed, 20 Mar 2013 15:35:50 +0000 |
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| 9:c0fb53affa76 | 10:37bf6b4a2645 |
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| 1 <html lang="en"> | |
| 2 <head> | |
| 3 <title>Installation and Customization - FFTW 3.3.3</title> | |
| 4 <meta http-equiv="Content-Type" content="text/html"> | |
| 5 <meta name="description" content="FFTW 3.3.3"> | |
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| 8 <link rel="prev" href="Upgrading-from-FFTW-version-2.html#Upgrading-from-FFTW-version-2" title="Upgrading from FFTW version 2"> | |
| 9 <link rel="next" href="Acknowledgments.html#Acknowledgments" title="Acknowledgments"> | |
| 10 <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> | |
| 11 <!-- | |
| 12 This manual is for FFTW | |
| 13 (version 3.3.3, 25 November 2012). | |
| 14 | |
| 15 Copyright (C) 2003 Matteo Frigo. | |
| 16 | |
| 17 Copyright (C) 2003 Massachusetts Institute of Technology. | |
| 18 | |
| 19 Permission is granted to make and distribute verbatim copies of | |
| 20 this manual provided the copyright notice and this permission | |
| 21 notice are preserved on all copies. | |
| 22 | |
| 23 Permission is granted to copy and distribute modified versions of | |
| 24 this manual under the conditions for verbatim copying, provided | |
| 25 that the entire resulting derived work is distributed under the | |
| 26 terms of a permission notice identical to this one. | |
| 27 | |
| 28 Permission is granted to copy and distribute translations of this | |
| 29 manual into another language, under the above conditions for | |
| 30 modified versions, except that this permission notice may be | |
| 31 stated in a translation approved by the Free Software Foundation. | |
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| 47 <div class="node"> | |
| 48 <a name="Installation-and-Customization"></a> | |
| 49 <p> | |
| 50 Next: <a rel="next" accesskey="n" href="Acknowledgments.html#Acknowledgments">Acknowledgments</a>, | |
| 51 Previous: <a rel="previous" accesskey="p" href="Upgrading-from-FFTW-version-2.html#Upgrading-from-FFTW-version-2">Upgrading from FFTW version 2</a>, | |
| 52 Up: <a rel="up" accesskey="u" href="index.html#Top">Top</a> | |
| 53 <hr> | |
| 54 </div> | |
| 55 | |
| 56 <h2 class="chapter">10 Installation and Customization</h2> | |
| 57 | |
| 58 <p><a name="index-installation-603"></a> | |
| 59 This chapter describes the installation and customization of FFTW, the | |
| 60 latest version of which may be downloaded from | |
| 61 <a href="http://www.fftw.org">the FFTW home page</a>. | |
| 62 | |
| 63 <p>In principle, FFTW should work on any system with an ANSI C compiler | |
| 64 (<code>gcc</code> is fine). However, planner time is drastically reduced if | |
| 65 FFTW can exploit a hardware cycle counter; FFTW comes with cycle-counter | |
| 66 support for all modern general-purpose CPUs, but you may need to add a | |
| 67 couple of lines of code if your compiler is not yet supported | |
| 68 (see <a href="Cycle-Counters.html#Cycle-Counters">Cycle Counters</a>). (On Unix, there will be a warning at the end | |
| 69 of the <code>configure</code> output if no cycle counter is found.) | |
| 70 <a name="index-cycle-counter-604"></a><a name="index-compiler-605"></a><a name="index-portability-606"></a> | |
| 71 | |
| 72 <p>Installation of FFTW is simplest if you have a Unix or a GNU system, | |
| 73 such as GNU/Linux, and we describe this case in the first section below, | |
| 74 including the use of special configuration options to e.g. install | |
| 75 different precisions or exploit optimizations for particular | |
| 76 architectures (e.g. SIMD). Compilation on non-Unix systems is a more | |
| 77 manual process, but we outline the procedure in the second section. It | |
| 78 is also likely that pre-compiled binaries will be available for popular | |
| 79 systems. | |
| 80 | |
| 81 <p>Finally, we describe how you can customize FFTW for particular needs by | |
| 82 generating <em>codelets</em> for fast transforms of sizes not supported | |
| 83 efficiently by the standard FFTW distribution. | |
| 84 <a name="index-codelet-607"></a> | |
| 85 | |
| 86 <ul class="menu"> | |
| 87 <li><a accesskey="1" href="Installation-on-Unix.html#Installation-on-Unix">Installation on Unix</a> | |
| 88 <li><a accesskey="2" href="Installation-on-non_002dUnix-systems.html#Installation-on-non_002dUnix-systems">Installation on non-Unix systems</a> | |
| 89 <li><a accesskey="3" href="Cycle-Counters.html#Cycle-Counters">Cycle Counters</a> | |
| 90 <li><a accesskey="4" href="Generating-your-own-code.html#Generating-your-own-code">Generating your own code</a> | |
| 91 </ul> | |
| 92 | |
| 93 <!-- --> | |
| 94 </body></html> | |
| 95 |