From mfournier@uni-hamburg.de Thu Dec 12 17:42:21 1996 Path: ashpoly!cascade!transat!ukc!fennimore!uni-hamburg!mfournier From: mfournier@uni-hamburg.de (Min-jun Fournier) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Dec12.174221.7214@uni-hamburg.de> Date: Thu, 12 Dec 1996 17:42:21 GMT Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: TIN [version 1.2 PL2] 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! -- Min-jun Fournier *PLONK* filter active for trolls. NeXTstation Turbo Color - NetBSD 1.0 From sandersson@panix.com Thu Dec 12 20:08:21 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!panix!sandersson From: sandersson@panix.com (Seo-yeon Andersson) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Dec12.200821.9535@panix.com> Date: Thu, 12 Dec 1996 20:08:21 GMT References: <1996Dec12.174221.7214@uni-hamburg.de> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Dec12.174221.7214@uni-hamburg.de>, mfournier@uni-hamburg.de (Min-jun Fournier) writes: > 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. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Seo-yeon Andersson Opinions expressed are solely my own and not those of Public Access Unix of New York. ------------------------------------------------------------ From amartinez@cam.ac.uk Fri Dec 13 12:24:21 1996 Path: ashpoly!cascade!bigsur!cam!amartinez From: amartinez@cam.ac.uk (Amy Martínez) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Dec13.122421.6000@cam.ac.uk> Date: Fri, 13 Dec 1996 12:24:21 GMT References: <1996Dec12.174221.7214@uni-hamburg.de> <1996Dec12.200821.9535@panix.com> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Dec12.200821.9535@panix.com>, sandersson@panix.com (Seo-yeon Andersson) 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. -- === Amy Martínez === Dept of Electrical Engineering, University of Cambridge Computer Laboratory "Row 14. No joke." From rmacdonald@uu.net Fri Dec 13 19:10:21 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!uu!rmacdonald From: rmacdonald@uu.net (Rodrigo MacDonald) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Dec13.191021.2402@uu.net> Date: Fri, 13 Dec 1996 19:10:21 GMT References: <1996Dec12.174221.7214@uni-hamburg.de> <1996Dec12.200821.9535@panix.com> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1996Dec12.200821.9535@panix.com>, sandersson@panix.com (Seo-yeon Andersson) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- === Rodrigo MacDonald === Dept of Electrical Engineering, UUNET Technologies, Falls Church VA "Extraordinary claims require extraordinary spectra."