From eandersson@purdue.edu Tue Dec 05 17:03:33 1995 Path: ashpoly!cascade!mxgate!coyoacan!purdue!eandersson From: eandersson@purdue.edu (Elaine Andersson) Newsgroups: comp.sys.m68k Subject: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec05.170333.5187@purdue.edu> Date: Tue, 05 Dec 1995 17:03:33 GMT Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. Anyone running this on a Quadra 840AV with the 68040? -- === Elaine Andersson === Dept of Electrical Engineering, Purdue University Engineering Computer Network "5 sigma is a discovery. 7 is a question." From vkim@illinois.edu Thu Dec 07 11:28:33 1995 Path: ashpoly!cascade!transat!ukc!fennimore!illinois!vkim From: vkim@illinois.edu (Valeria Kim) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec07.112833.1404@illinois.edu> Date: Thu, 07 Dec 1995 11:28:33 GMT References: <1995Dec05.170333.5187@purdue.edu> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Dec05.170333.5187@purdue.edu>, eandersson@purdue.edu (Elaine Andersson) writes: > Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? > Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Valeria Kim *PLONK* filter active for trolls. Decstation 5000/200 - NetBSD 1.0 From kandersson@cern.ch Thu Dec 07 20:04:33 1995 Path: ashpoly!cascade!transat!ukc!fennimore!cern!kandersson From: kandersson@cern.ch (Katrin Andersson) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec07.200433.8412@cern.ch> Date: Thu, 07 Dec 1995 20:04:33 GMT References: <1995Dec05.170333.5187@purdue.edu> <1995Dec07.112833.1404@illinois.edu> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1995Dec07.112833.1404@illinois.edu>, vkim@illinois.edu (Valeria Kim) 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. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Katrin Andersson Zyxel U-1496E @ 33,600 bps "Marcus is not one man." From msuzuki@kth.se Fri Dec 08 07:24:33 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!kth!msuzuki From: msuzuki@kth.se (Morag Suzuki) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec08.072433.2816@kth.se> Date: Fri, 08 Dec 1995 07:24:33 GMT References: <1995Dec05.170333.5187@purdue.edu> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Dec05.170333.5187@purdue.edu>, eandersson@purdue.edu (Elaine Andersson) writes: > Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? > Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Morag Suzuki -- Royal Institute of Technology, Stockholm "Do not worship the copy." From rstewart@tum.de Sat Dec 09 17:48:33 1995 Path: ashpoly!cascade!bigsur!tum!rstewart From: rstewart@tum.de (Rodrigo Stewart) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec09.174833.8133@tum.de> Date: Sat, 09 Dec 1995 17:48:33 GMT References: <1995Dec05.170333.5187@purdue.edu> <1995Dec07.112833.1404@illinois.edu> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Dec07.112833.1404@illinois.edu>, vkim@illinois.edu (Valeria 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. -- Rodrigo Stewart *PLONK* filter active for trolls. Atari TT030 - NetBSD 1.0