From dramirez@cern.ch Thu Jan 26 21:51:54 1995 Path: ashpoly!cascade!mxgate!coyoacan!cern!dramirez From: dramirez@cern.ch (Dave Ramírez) Newsgroups: comp.sys.m68k Subject: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan26.215154.5778@cern.ch> Date: Thu, 26 Jan 1995 21:51:54 GMT Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: WinVN 0.99.5 Lines: 11 Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- Dave Ramírez Opinions expressed are solely my own and not those of European Laboratory for Particle Physics, Geneva. ------------------------------------------------------------ From spetrov@rwth-aachen.de Sat Jan 28 06:46:54 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!rwth-aachen!spetrov From: spetrov@rwth-aachen.de (Sergei Petrov) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan28.064654.2939@rwth-aachen.de> Date: Sat, 28 Jan 1995 06:46:54 GMT References: <1995Jan26.215154.5778@cern.ch> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Jan26.215154.5778@cern.ch>, dramirez@cern.ch (Dave Ramírez) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Sergei Petrov SupraFAXModem 28.8 @ 28,800 bps "There are 14 nodes and only 10 countries. Count again." From mduarte@unam.mx Sun Jan 29 16:22:54 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!unam!mduarte From: mduarte@unam.mx (Mike Duarte) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan29.162254.7644@unam.mx> Date: Sun, 29 Jan 1995 16:22:54 GMT References: <1995Jan26.215154.5778@cern.ch> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Jan26.215154.5778@cern.ch>, dramirez@cern.ch (Dave Ramírez) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Mike Duarte | mduarte@unam.mx PGP Key fingerprint: 39AA 3DC1 51AB 4D60 "Keep the channels open." From msato@ox.ac.uk Tue Jan 31 06:44:54 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!ox!msato From: msato@ox.ac.uk (Mathieu Sato) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan31.064454.7790@ox.ac.uk> Date: Tue, 31 Jan 1995 06:44:54 GMT References: <1995Jan26.215154.5778@cern.ch> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Jan26.215154.5778@cern.ch>, dramirez@cern.ch (Dave Ramírez) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). > By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Mathieu Sato Zyxel U-1496E @ 28,800 bps "Row 14. No joke."