From mrodriguez@kth.se Mon Aug 05 14:31:02 1996 Path: ashpoly!cascade!bigsur!kth!mrodriguez From: mrodriguez@kth.se (Mei Rodríguez) Newsgroups: comp.sys.m68k Subject: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Aug05.143102.6227@kth.se> Date: Mon, 05 Aug 1996 14:31:02 GMT Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se 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. A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Mei Rodríguez "We don't sign stars. We build them." Commodore Amiga 500 (1MB OCS) / Linux 1.2.13 From bkim@utexas.edu Tue Aug 06 18:34:02 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!utexas!bkim From: bkim@utexas.edu (Bastien Kim) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Aug06.183402.1897@utexas.edu> Date: Tue, 06 Aug 1996 18:34:02 GMT References: <1996Aug05.143102.6227@kth.se> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Aug05.143102.6227@kth.se>, mrodriguez@kth.se (Mei Rodríguez) 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. -- Bastien Kim -- University of Texas at Austin "Do not worship the copy." From ksmirnov@hanse.de Tue Aug 06 23:56:02 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!hanse!ksmirnov From: ksmirnov@hanse.de (Kirsty Smirnov) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Aug06.235602.7260@hanse.de> Date: Tue, 06 Aug 1996 23:56:02 GMT References: <1996Aug05.143102.6227@kth.se> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1996Aug05.143102.6227@kth.se>, mrodriguez@kth.se (Mei Rodríguez) 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. PGP Public key available via finger or upon request. -- === Kirsty Smirnov === Dept of Electrical Engineering, Hanse-Netzwerk Hamburg "Measuring a record you own is listening, not piracy." From jandersson@rwth-aachen.de Wed Aug 07 09:37:02 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!rwth-aachen!jandersson From: jandersson@rwth-aachen.de (Joachim Andersson) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Aug07.093702.5915@rwth-aachen.de> Date: Wed, 07 Aug 1996 09:37:02 GMT References: <1996Aug05.143102.6227@kth.se> <1996Aug06.183402.1897@utexas.edu> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Aug06.183402.1897@utexas.edu>, bkim@utexas.edu (Bastien Kim) 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. -- Joachim Andersson Opinions expressed are solely my own and not those of RWTH Aachen Informatik. ------------------------------------------------------------