cannam@127: @node Acknowledgments, License and Copyright, Installation and Customization, Top
cannam@127: @chapter Acknowledgments
cannam@127: 
cannam@127: Matteo Frigo was supported in part by the Special Research Program SFB
cannam@127: F011 ``AURORA'' of the Austrian Science Fund FWF and by MIT Lincoln
cannam@127: Laboratory.  For previous versions of FFTW, he was supported in part by the
cannam@127: Defense Advanced Research Projects Agency (DARPA), under Grants
cannam@127: N00014-94-1-0985 and F30602-97-1-0270, and by a Digital Equipment
cannam@127: Corporation Fellowship.  
cannam@127: 
cannam@127: Steven G. Johnson was supported in part by a Dept.@ of Defense NDSEG
cannam@127: Fellowship, an MIT Karl Taylor Compton Fellowship, and by the Materials
cannam@127: Research Science and Engineering Center program of the National Science
cannam@127: Foundation under award DMR-9400334.
cannam@127: 
cannam@127: Code for the Cell Broadband Engine was graciously donated to the FFTW
cannam@127: project by the IBM Austin Research Lab and included in fftw-3.2.  (This
cannam@127: code was removed in fftw-3.3.)
cannam@127: 
cannam@127: Code for the MIPS paired-single SIMD support was graciously donated to
cannam@127: the FFTW project by CodeSourcery, Inc.
cannam@127: 
cannam@127: We are grateful to Sun Microsystems Inc.@ for its donation of a
cannam@127: cluster of 9 8-processor Ultra HPC 5000 SMPs (24 Gflops peak). These
cannam@127: machines served as the primary platform for the development of early
cannam@127: versions of FFTW.
cannam@127: 
cannam@127: We thank Intel Corporation for donating a four-processor Pentium Pro
cannam@127: machine.  We thank the GNU/Linux community for giving us a decent OS to
cannam@127: run on that machine.
cannam@127: 
cannam@127: We are thankful to the AMD corporation for donating an AMD Athlon XP 1700+
cannam@127: computer to the FFTW project.
cannam@127: 
cannam@127: We thank the Compaq/HP testdrive program and VA Software Corporation
cannam@127: (SourceForge.net) for providing remote access to machines that were used
cannam@127: to test FFTW.
cannam@127: 
cannam@127: The @code{genfft} suite of code generators was written using Objective
cannam@127: Caml, a dialect of ML.  Objective Caml is a small and elegant language
cannam@127: developed by Xavier Leroy.  The implementation is available from
cannam@127: @uref{http://caml.inria.fr/, @code{http://caml.inria.fr/}}.  In previous
cannam@127: releases of FFTW, @code{genfft} was written in Caml Light, by the same
cannam@127: authors.  An even earlier implementation of @code{genfft} was written in
cannam@127: Scheme, but Caml is definitely better for this kind of application.
cannam@127: @cindex Caml
cannam@127: @cindex LISP
cannam@127: 
cannam@127: 
cannam@127: FFTW uses many tools from the GNU project, including @code{automake},
cannam@127: @code{texinfo}, and @code{libtool}.
cannam@127: 
cannam@127: Prof.@ Charles E.@ Leiserson of MIT provided continuous support and
cannam@127: encouragement.  This program would not exist without him.  Charles also
cannam@127: proposed the name ``codelets'' for the basic FFT blocks.
cannam@127: @cindex codelet
cannam@127: 
cannam@127: 
cannam@127: Prof.@ John D.@ Joannopoulos of MIT demonstrated continuing tolerance of
cannam@127: Steven's ``extra-curricular'' computer-science activities, as well as
cannam@127: remarkable creativity in working them into his grant proposals.
cannam@127: Steven's physics degree would not exist without him.
cannam@127: 
cannam@127: Franz Franchetti wrote SIMD extensions to FFTW 2, which eventually
cannam@127: led to the SIMD support in FFTW 3.
cannam@127: 
cannam@127: Stefan Kral wrote most of the K7 code generator distributed with FFTW
cannam@127: 3.0.x and 3.1.x.
cannam@127: 
cannam@127: Andrew Sterian contributed the Windows timing code in FFTW 2.  
cannam@127: 
cannam@127: Didier Miras reported a bug in the test procedure used in FFTW 1.2.  We
cannam@127: now use a completely different test algorithm by Funda Ergun that does
cannam@127: not require a separate FFT program to compare against.
cannam@127: 
cannam@127: Wolfgang Reimer contributed the Pentium cycle counter and a few fixes
cannam@127: that help portability.
cannam@127: 
cannam@127: Ming-Chang Liu uncovered a well-hidden bug in the complex transforms of
cannam@127: FFTW 2.0 and supplied a patch to correct it.
cannam@127: 
cannam@127: The FFTW FAQ was written in @code{bfnn} (Bizarre Format With No Name)
cannam@127: and formatted using the tools developed by Ian Jackson for the Linux
cannam@127: FAQ.
cannam@127: 
cannam@127: @emph{We are especially thankful to all of our users for their
cannam@127: continuing support, feedback, and interest during our development of
cannam@127: FFTW.}
cannam@127: