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| author | Geogaddi\David <d.m.ronan@qmul.ac.uk> |
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| date | Thu, 09 Jul 2015 01:12:16 +0100 |
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| 1 <html lang="en"> | |
| 2 <head> | |
| 3 <title>FFTW on the Cell Processor - FFTW 3.2.1</title> | |
| 4 <meta http-equiv="Content-Type" content="text/html"> | |
| 5 <meta name="description" content="FFTW 3.2.1"> | |
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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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| 11 <!-- | |
| 12 This manual is for FFTW | |
| 13 (version 3.2.1, 5 February 2009). | |
| 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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| 45 </head> | |
| 46 <body> | |
| 47 <div class="node"> | |
| 48 <p> | |
| 49 <a name="FFTW-on-the-Cell-Processor"></a> | |
| 50 Next: <a rel="next" accesskey="n" href="Calling-FFTW-from-Fortran.html#Calling-FFTW-from-Fortran">Calling FFTW from Fortran</a>, | |
| 51 Previous: <a rel="previous" accesskey="p" href="Multi_002dthreaded-FFTW.html#Multi_002dthreaded-FFTW">Multi-threaded FFTW</a>, | |
| 52 Up: <a rel="up" accesskey="u" href="index.html#Top">Top</a> | |
| 53 <hr> | |
| 54 </div> | |
| 55 | |
| 56 <h2 class="chapter">6 FFTW on the Cell Processor</h2> | |
| 57 | |
| 58 <p><a name="index-Cell-processor-329"></a> | |
| 59 Starting with version 3.2, FFTW contains specific support for the Cell | |
| 60 Broadband Engine (“Cell”) processor, graciously donated by the IBM | |
| 61 Austin Research Laboratory. | |
| 62 | |
| 63 <p>Cell consists of one PowerPC core (“PPE”) and of a number of | |
| 64 Synergistic Processing Elements (“SPE”) to which the PPE can | |
| 65 delegate computation. The IBM QS20 Cell blade offers 8 SPEs per Cell | |
| 66 chip. The Sony Playstation 3 contains 6 useable SPEs. | |
| 67 | |
| 68 <p>Currently, FFTW fully utilizes the SPEs for one- and multi-dimensional | |
| 69 complex FFTs of sizes that can be factored into small primes, both in | |
| 70 single and double precision. Transforms of real data use SPEs only | |
| 71 partially at this time. If FFTW cannot use the SPEs, it falls back to | |
| 72 a slower computation on the PPE. | |
| 73 | |
| 74 <p>FFTW is meant to use the SPEs transparently without user intervention. | |
| 75 However, certain caveats apply, which are discussed later in this | |
| 76 document. | |
| 77 | |
| 78 <ul class="menu"> | |
| 79 <li><a accesskey="1" href="Cell-Installation.html#Cell-Installation">Cell Installation</a> | |
| 80 <li><a accesskey="2" href="Cell-Caveats.html#Cell-Caveats">Cell Caveats</a> | |
| 81 <li><a accesskey="3" href="FFTW-Accuracy-on-Cell.html#FFTW-Accuracy-on-Cell">FFTW Accuracy on Cell</a> | |
| 82 </ul> | |
| 83 | |
| 84 <!-- --> | |
| 85 </body></html> | |
| 86 |