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1 @node Acknowledgments, License and Copyright, Installation and Customization, Top
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2 @chapter Acknowledgments
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3
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4 Matteo Frigo was supported in part by the Special Research Program SFB
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5 F011 ``AURORA'' of the Austrian Science Fund FWF and by MIT Lincoln
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6 Laboratory. For previous versions of FFTW, he was supported in part by the
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7 Defense Advanced Research Projects Agency (DARPA), under Grants
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8 N00014-94-1-0985 and F30602-97-1-0270, and by a Digital Equipment
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9 Corporation Fellowship.
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10
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11 Steven G. Johnson was supported in part by a Dept.@ of Defense NDSEG
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12 Fellowship, an MIT Karl Taylor Compton Fellowship, and by the Materials
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13 Research Science and Engineering Center program of the National Science
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14 Foundation under award DMR-9400334.
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15
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16 Code for the Cell Broadband Engine was graciously donated to the FFTW
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17 project by the IBM Austin Research Lab and included in fftw-3.2. (This
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18 code was removed in fftw-3.3.)
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19
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20 Code for the MIPS paired-single SIMD support was graciously donated to
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21 the FFTW project by CodeSourcery, Inc.
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22
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23 We are grateful to Sun Microsystems Inc.@ for its donation of a
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24 cluster of 9 8-processor Ultra HPC 5000 SMPs (24 Gflops peak). These
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25 machines served as the primary platform for the development of early
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26 versions of FFTW.
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27
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28 We thank Intel Corporation for donating a four-processor Pentium Pro
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29 machine. We thank the GNU/Linux community for giving us a decent OS to
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30 run on that machine.
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31
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32 We are thankful to the AMD corporation for donating an AMD Athlon XP 1700+
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33 computer to the FFTW project.
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34
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35 We thank the Compaq/HP testdrive program and VA Software Corporation
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36 (SourceForge.net) for providing remote access to machines that were used
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37 to test FFTW.
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38
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39 The @code{genfft} suite of code generators was written using Objective
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40 Caml, a dialect of ML. Objective Caml is a small and elegant language
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41 developed by Xavier Leroy. The implementation is available from
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42 @uref{http://caml.inria.fr/, @code{http://caml.inria.fr/}}. In previous
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43 releases of FFTW, @code{genfft} was written in Caml Light, by the same
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44 authors. An even earlier implementation of @code{genfft} was written in
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45 Scheme, but Caml is definitely better for this kind of application.
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46 @cindex Caml
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47 @cindex LISP
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48
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49
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50 FFTW uses many tools from the GNU project, including @code{automake},
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51 @code{texinfo}, and @code{libtool}.
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52
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53 Prof.@ Charles E.@ Leiserson of MIT provided continuous support and
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54 encouragement. This program would not exist without him. Charles also
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55 proposed the name ``codelets'' for the basic FFT blocks.
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56 @cindex codelet
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57
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58
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59 Prof.@ John D.@ Joannopoulos of MIT demonstrated continuing tolerance of
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60 Steven's ``extra-curricular'' computer-science activities, as well as
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61 remarkable creativity in working them into his grant proposals.
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62 Steven's physics degree would not exist without him.
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63
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64 Franz Franchetti wrote SIMD extensions to FFTW 2, which eventually
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65 led to the SIMD support in FFTW 3.
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66
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67 Stefan Kral wrote most of the K7 code generator distributed with FFTW
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68 3.0.x and 3.1.x.
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69
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70 Andrew Sterian contributed the Windows timing code in FFTW 2.
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71
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72 Didier Miras reported a bug in the test procedure used in FFTW 1.2. We
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73 now use a completely different test algorithm by Funda Ergun that does
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74 not require a separate FFT program to compare against.
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75
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76 Wolfgang Reimer contributed the Pentium cycle counter and a few fixes
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77 that help portability.
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78
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79 Ming-Chang Liu uncovered a well-hidden bug in the complex transforms of
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80 FFTW 2.0 and supplied a patch to correct it.
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81
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82 The FFTW FAQ was written in @code{bfnn} (Bizarre Format With No Name)
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83 and formatted using the tools developed by Ian Jackson for the Linux
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84 FAQ.
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85
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86 @emph{We are especially thankful to all of our users for their
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87 continuing support, feedback, and interest during our development of
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88 FFTW.}
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89
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