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Matteo Frigo was supported in part by the Special Research Program SFB Chris@10: F011 “AURORA” of the Austrian Science Fund FWF and by MIT Lincoln Chris@10: Laboratory. For previous versions of FFTW, he was supported in part by the Chris@10: Defense Advanced Research Projects Agency (DARPA), under Grants Chris@10: N00014-94-1-0985 and F30602-97-1-0270, and by a Digital Equipment Chris@10: Corporation Fellowship. Chris@10: Chris@10:
Steven G. Johnson was supported in part by a Dept. of Defense NDSEG Chris@10: Fellowship, an MIT Karl Taylor Compton Fellowship, and by the Materials Chris@10: Research Science and Engineering Center program of the National Science Chris@10: Foundation under award DMR-9400334. Chris@10: Chris@10:
Code for the Cell Broadband Engine was graciously donated to the FFTW Chris@10: project by the IBM Austin Research Lab and included in fftw-3.2. (This Chris@10: code was removed in fftw-3.3.) Chris@10: Chris@10:
Code for the MIPS paired-single SIMD support was graciously donated to Chris@10: the FFTW project by CodeSourcery, Inc. Chris@10: Chris@10:
We are grateful to Sun Microsystems Inc. for its donation of a Chris@10: cluster of 9 8-processor Ultra HPC 5000 SMPs (24 Gflops peak). These Chris@10: machines served as the primary platform for the development of early Chris@10: versions of FFTW. Chris@10: Chris@10:
We thank Intel Corporation for donating a four-processor Pentium Pro Chris@10: machine. We thank the GNU/Linux community for giving us a decent OS to Chris@10: run on that machine. Chris@10: Chris@10:
We are thankful to the AMD corporation for donating an AMD Athlon XP 1700+ Chris@10: computer to the FFTW project. Chris@10: Chris@10:
We thank the Compaq/HP testdrive program and VA Software Corporation Chris@10: (SourceForge.net) for providing remote access to machines that were used Chris@10: to test FFTW. Chris@10: Chris@10:
The genfft suite of code generators was written using Objective
Chris@10: Caml, a dialect of ML. Objective Caml is a small and elegant language
Chris@10: developed by Xavier Leroy. The implementation is available from
Chris@10: http://caml.inria.fr/. In previous
Chris@10: releases of FFTW, genfft was written in Caml Light, by the same
Chris@10: authors. An even earlier implementation of genfft was written in
Chris@10: 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@10: texinfo, and libtool.
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Prof. Charles E. Leiserson of MIT provided continuous support and Chris@10: encouragement. This program would not exist without him. Charles also Chris@10: proposed the name “codelets” for the basic FFT blocks. Chris@10: Chris@10: Chris@10:
Prof. John D. Joannopoulos of MIT demonstrated continuing tolerance of Chris@10: Steven's “extra-curricular” computer-science activities, as well as Chris@10: remarkable creativity in working them into his grant proposals. Chris@10: Steven's physics degree would not exist without him. Chris@10: Chris@10:
Franz Franchetti wrote SIMD extensions to FFTW 2, which eventually Chris@10: led to the SIMD support in FFTW 3. Chris@10: Chris@10:
Stefan Kral wrote most of the K7 code generator distributed with FFTW Chris@10: 3.0.x and 3.1.x. Chris@10: Chris@10:
Andrew Sterian contributed the Windows timing code in FFTW 2. Chris@10: Chris@10:
Didier Miras reported a bug in the test procedure used in FFTW 1.2. We Chris@10: now use a completely different test algorithm by Funda Ergun that does Chris@10: not require a separate FFT program to compare against. Chris@10: Chris@10:
Wolfgang Reimer contributed the Pentium cycle counter and a few fixes Chris@10: that help portability. Chris@10: Chris@10:
Ming-Chang Liu uncovered a well-hidden bug in the complex transforms of Chris@10: FFTW 2.0 and supplied a patch to correct it. Chris@10: Chris@10:
The FFTW FAQ was written in bfnn (Bizarre Format With No Name)
Chris@10: and formatted using the tools developed by Ian Jackson for the Linux
Chris@10: FAQ.
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We are especially thankful to all of our users for their Chris@10: continuing support, feedback, and interest during our development of Chris@10: FFTW. Chris@10: Chris@10: Chris@10: