From hpetrov@netcom.com Tue Aug 01 22:32:46 1995 Path: ashpoly!cascade!bigsur!netcom!hpetrov From: hpetrov@netcom.com (Hugo Petrov) Newsgroups: comp.sys.m68k Subject: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug01.223246.3847@netcom.com> Date: Tue, 01 Aug 1995 22:32:46 GMT Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: WinVN 0.99.5 Lines: 11 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Hugo Petrov "Do not worship the copy." Sun SparcStation 20 / TOS 4.04 From lnovak@earthlink.net Fri Aug 04 02:08:46 1995 Path: ashpoly!cascade!brgate!saturno!earthlink!lnovak From: lnovak@earthlink.net (Lars Novak) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug04.020846.5160@earthlink.net> Date: Fri, 04 Aug 1995 02:08:46 GMT References: <1995Aug01.223246.3847@netcom.com> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1995Aug01.223246.3847@netcom.com>, hpetrov@netcom.com (Hugo Petrov) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Lars Novak -- EarthLink Network "The hatch is open. Is anyone listening?" From kkuznetsov@utexas.edu Fri Aug 04 20:18:46 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!utexas!kkuznetsov From: kkuznetsov@utexas.edu (Kenji Kuznetsov) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug04.201846.9770@utexas.edu> Date: Fri, 04 Aug 1995 20:18:46 GMT References: <1995Aug01.223246.3847@netcom.com> <1995Aug04.020846.5160@earthlink.net> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1995Aug04.020846.5160@earthlink.net>, lnovak@earthlink.net (Lars Novak) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Kenji Kuznetsov Hayes Optima 288 @ 9600 Telebit bps "A soul is not exclusive to biology."