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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 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: http://caml.inria.fr/. In previous
Chris@19: releases of FFTW, genfft was written in Caml Light, by the same
Chris@19: authors. An even earlier implementation of genfft was written in
Chris@19: Scheme, but Caml is definitely better for this kind of application.
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FFTW uses many tools from the GNU project, including automake,
Chris@19: texinfo, and libtool.
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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: 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 bfnn (Bizarre Format With No Name)
Chris@19: and formatted using the tools developed by Ian Jackson for the Linux
Chris@19: FAQ.
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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: Chris@19: Chris@19: