From nsato@earthlink.net Sun Feb 04 07:01:11 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!earthlink!nsato From: nsato@earthlink.net (Nadia Sato) Newsgroups: comp.sys.m68k Subject: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Feb04.070111.7787@earthlink.net> Date: Sun, 04 Feb 1996 07:01:11 GMT Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- Nadia Sato | nsato@earthlink.net PGP Key fingerprint: CCEB 50E2 8C34 A452 "Keep the channels open." From jlaurent@utexas.edu Mon Feb 05 17:47:11 1996 Path: ashpoly!cascade!transat!ukc!fennimore!utexas!jlaurent From: jlaurent@utexas.edu (Julien Laurent) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Feb05.174711.2296@utexas.edu> Date: Mon, 05 Feb 1996 17:47:11 GMT References: <1996Feb04.070111.7787@earthlink.net> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Feb04.070111.7787@earthlink.net>, nsato@earthlink.net (Nadia Sato) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Julien Laurent Opinions expressed are solely my own and not those of University of Texas at Austin. ------------------------------------------------------------ From rsuzuki@uu.net Tue Feb 06 18:53:11 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!uu!rsuzuki From: rsuzuki@uu.net (Rodrigo Suzuki) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Feb06.185311.9002@uu.net> Date: Tue, 06 Feb 1996 18:53:11 GMT References: <1996Feb04.070111.7787@earthlink.net> <1996Feb05.174711.2296@utexas.edu> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Feb05.174711.2296@utexas.edu>, jlaurent@utexas.edu (Julien Laurent) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Rodrigo Suzuki US Robotics Courier V.34 @ 9600 Telebit bps "Hardware is temporary. The signal survives."