From kbrennan@mit.edu Sun Mar 12 14:16:21 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!mit!kbrennan From: kbrennan@mit.edu (Kenji Brennan) Newsgroups: comp.sys.m68k Subject: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar12.141621.9106@mit.edu> Date: Sun, 12 Mar 1995 14:16:21 GMT Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- Kenji Brennan "In theory there is no difference between theory and practice." Atari TT030 / AmigaOS 3.1 From igarcia@pacbell.net Mon Mar 13 06:24:21 1995 Path: ashpoly!cascade!mxgate!coyoacan!pacbell!igarcia From: igarcia@pacbell.net (Ines García) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar13.062421.2135@pacbell.net> Date: Mon, 13 Mar 1995 06:24:21 GMT References: <1995Mar12.141621.9106@mit.edu> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: WinVN 0.99.5 Lines: 12 In article <1995Mar12.141621.9106@mit.edu>, kbrennan@mit.edu (Kenji Brennan) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. > Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Ines García *PLONK* filter active for trolls. Decstation 5000/200 - NetBSD 1.0