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