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diff src/fftw-3.3.5/doc/html/Installation-and-Supported-Hardware_002fSoftware.html @ 127:7867fa7e1b6b
Current fftw source
| author | Chris Cannam <cannam@all-day-breakfast.com> |
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| date | Tue, 18 Oct 2016 13:40:26 +0100 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/fftw-3.3.5/doc/html/Installation-and-Supported-Hardware_002fSoftware.html Tue Oct 18 13:40:26 2016 +0100 @@ -0,0 +1,118 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- This manual is for FFTW +(version 3.3.5, 30 July 2016). + +Copyright (C) 2003 Matteo Frigo. + +Copyright (C) 2003 Massachusetts Institute of Technology. + +Permission is granted to make and distribute verbatim copies of this +manual provided the copyright notice and this permission notice are +preserved on all copies. + +Permission is granted to copy and distribute modified versions of this +manual under the conditions for verbatim copying, provided that the +entire resulting derived work is distributed under the terms of a +permission notice identical to this one. + +Permission is granted to copy and distribute translations of this manual +into another language, under the above conditions for modified versions, +except that this permission notice may be stated in a translation +approved by the Free Software Foundation. --> +<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ --> +<head> +<title>FFTW 3.3.5: Installation and Supported Hardware/Software</title> + +<meta name="description" content="FFTW 3.3.5: Installation and Supported Hardware/Software"> +<meta name="keywords" content="FFTW 3.3.5: Installation and Supported Hardware/Software"> +<meta name="resource-type" content="document"> +<meta name="distribution" content="global"> +<meta name="Generator" content="makeinfo"> +<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> +<link href="index.html#Top" rel="start" title="Top"> +<link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index"> +<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="Multi_002dthreaded-FFTW.html#Multi_002dthreaded-FFTW" rel="up" title="Multi-threaded FFTW"> +<link href="Usage-of-Multi_002dthreaded-FFTW.html#Usage-of-Multi_002dthreaded-FFTW" rel="next" title="Usage of Multi-threaded FFTW"> +<link href="Multi_002dthreaded-FFTW.html#Multi_002dthreaded-FFTW" rel="prev" title="Multi-threaded FFTW"> +<style type="text/css"> +<!-- +a.summary-letter {text-decoration: none} +blockquote.smallquotation {font-size: smaller} +div.display {margin-left: 3.2em} +div.example {margin-left: 3.2em} +div.indentedblock {margin-left: 3.2em} +div.lisp {margin-left: 3.2em} +div.smalldisplay {margin-left: 3.2em} +div.smallexample {margin-left: 3.2em} +div.smallindentedblock {margin-left: 3.2em; font-size: smaller} +div.smalllisp {margin-left: 3.2em} +kbd {font-style:oblique} +pre.display {font-family: inherit} +pre.format {font-family: inherit} +pre.menu-comment {font-family: serif} +pre.menu-preformatted {font-family: serif} +pre.smalldisplay {font-family: inherit; font-size: smaller} +pre.smallexample {font-size: smaller} +pre.smallformat {font-family: inherit; font-size: smaller} +pre.smalllisp {font-size: smaller} +span.nocodebreak {white-space:nowrap} +span.nolinebreak {white-space:nowrap} +span.roman {font-family:serif; font-weight:normal} +span.sansserif {font-family:sans-serif; font-weight:normal} +ul.no-bullet {list-style: none} +--> +</style> + + +</head> + +<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> +<a name="Installation-and-Supported-Hardware_002fSoftware"></a> +<div class="header"> +<p> +Next: <a href="Usage-of-Multi_002dthreaded-FFTW.html#Usage-of-Multi_002dthreaded-FFTW" accesskey="n" rel="next">Usage of Multi-threaded FFTW</a>, Previous: <a href="Multi_002dthreaded-FFTW.html#Multi_002dthreaded-FFTW" accesskey="p" rel="prev">Multi-threaded FFTW</a>, Up: <a href="Multi_002dthreaded-FFTW.html#Multi_002dthreaded-FFTW" accesskey="u" rel="up">Multi-threaded FFTW</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p> +</div> +<hr> +<a name="Installation-and-Supported-Hardware_002fSoftware-1"></a> +<h3 class="section">5.1 Installation and Supported Hardware/Software</h3> + +<p>All of the FFTW threads code is located in the <code>threads</code> +subdirectory of the FFTW package. On Unix systems, the FFTW threads +libraries and header files can be automatically configured, compiled, +and installed along with the uniprocessor FFTW libraries simply by +including <code>--enable-threads</code> in the flags to the <code>configure</code> +script (see <a href="Installation-on-Unix.html#Installation-on-Unix">Installation on Unix</a>), or <code>--enable-openmp</code> to use +<a href="http://www.openmp.org">OpenMP</a> threads. +<a name="index-configure"></a> +</p> + +<a name="index-portability-3"></a> +<a name="index-OpenMP"></a> +<p>The threads routines require your operating system to have some sort +of shared-memory threads support. Specifically, the FFTW threads +package works with POSIX threads (available on most Unix variants, +from GNU/Linux to MacOS X) and Win32 threads. OpenMP threads, which +are supported in many common compilers (e.g. gcc) are also supported, +and may give better performance on some systems. (OpenMP threads are +also useful if you are employing OpenMP in your own code, in order to +minimize conflicts between threading models.) If you have a +shared-memory machine that uses a different threads API, it should be +a simple matter of programming to include support for it; see the file +<code>threads/threads.c</code> for more detail. +</p> +<p>You can compile FFTW with <em>both</em> <code>--enable-threads</code> and +<code>--enable-openmp</code> at the same time, since they install libraries +with different names (‘<samp>fftw3_threads</samp>’ and ‘<samp>fftw3_omp</samp>’, as +described below). However, your programs may only link to <em>one</em> +of these two libraries at a time. +</p> +<p>Ideally, of course, you should also have multiple processors in order to +get any benefit from the threaded transforms. +</p> + + + +</body> +</html>