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3 <title>FFTW on the Cell Processor - FFTW 3.2.1</title>
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4 <meta http-equiv="Content-Type" content="text/html">
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5 <meta name="description" content="FFTW 3.2.1">
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7 <link title="Top" rel="start" href="index.html#Top">
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8 <link rel="prev" href="Multi_002dthreaded-FFTW.html#Multi_002dthreaded-FFTW" title="Multi-threaded FFTW">
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9 <link rel="next" href="Calling-FFTW-from-Fortran.html#Calling-FFTW-from-Fortran" title="Calling FFTW from Fortran">
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10 <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
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11 <!--
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12 This manual is for FFTW
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13 (version 3.2.1, 5 February 2009).
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14
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15 Copyright (C) 2003 Matteo Frigo.
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16
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17 Copyright (C) 2003 Massachusetts Institute of Technology.
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18
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19 Permission is granted to make and distribute verbatim copies of
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20 this manual provided the copyright notice and this permission
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21 notice are preserved on all copies.
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22
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23 Permission is granted to copy and distribute modified versions of
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24 this manual under the conditions for verbatim copying, provided
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25 that the entire resulting derived work is distributed under the
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26 terms of a permission notice identical to this one.
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27
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28 Permission is granted to copy and distribute translations of this
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29 manual into another language, under the above conditions for
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30 modified versions, except that this permission notice may be
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31 stated in a translation approved by the Free Software Foundation.
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32 -->
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44 --></style>
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45 </head>
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46 <body>
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47 <div class="node">
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48 <p>
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49 <a name="FFTW-on-the-Cell-Processor"></a>
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50 Next: <a rel="next" accesskey="n" href="Calling-FFTW-from-Fortran.html#Calling-FFTW-from-Fortran">Calling FFTW from Fortran</a>,
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51 Previous: <a rel="previous" accesskey="p" href="Multi_002dthreaded-FFTW.html#Multi_002dthreaded-FFTW">Multi-threaded FFTW</a>,
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52 Up: <a rel="up" accesskey="u" href="index.html#Top">Top</a>
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53 <hr>
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54 </div>
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55
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56 <h2 class="chapter">6 FFTW on the Cell Processor</h2>
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57
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58 <p><a name="index-Cell-processor-329"></a>
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59 Starting with version 3.2, FFTW contains specific support for the Cell
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60 Broadband Engine (“Cell”) processor, graciously donated by the IBM
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61 Austin Research Laboratory.
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62
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63 <p>Cell consists of one PowerPC core (“PPE”) and of a number of
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64 Synergistic Processing Elements (“SPE”) to which the PPE can
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65 delegate computation. The IBM QS20 Cell blade offers 8 SPEs per Cell
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66 chip. The Sony Playstation 3 contains 6 useable SPEs.
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67
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68 <p>Currently, FFTW fully utilizes the SPEs for one- and multi-dimensional
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69 complex FFTs of sizes that can be factored into small primes, both in
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70 single and double precision. Transforms of real data use SPEs only
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71 partially at this time. If FFTW cannot use the SPEs, it falls back to
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72 a slower computation on the PPE.
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73
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74 <p>FFTW is meant to use the SPEs transparently without user intervention.
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75 However, certain caveats apply, which are discussed later in this
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76 document.
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77
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78 <ul class="menu">
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79 <li><a accesskey="1" href="Cell-Installation.html#Cell-Installation">Cell Installation</a>
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80 <li><a accesskey="2" href="Cell-Caveats.html#Cell-Caveats">Cell Caveats</a>
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81 <li><a accesskey="3" href="FFTW-Accuracy-on-Cell.html#FFTW-Accuracy-on-Cell">FFTW Accuracy on Cell</a>
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82 </ul>
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83
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84 <!-- -->
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85 </body></html>
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86
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