From operez@u-tokyo.ac.jp Sun Mar 19 01:01:33 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!u-tokyo!operez From: operez@u-tokyo.ac.jp (Olga Pérez) Newsgroups: comp.sys.m68k Subject: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar19.010133.6865@u-tokyo.ac.jp> Date: Sun, 19 Mar 1995 01:01:33 GMT Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: Netscape 1.1N 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? -- Olga Pérez SupraFAXModem 28.8 @ 28,800 bps "There are 14 nodes and only 10 countries. Count again." From rsato@mindspring.com Sun Mar 19 12:25:33 1995 Path: ashpoly!cascade!transat!ukc!fennimore!mindspring!rsato From: rsato@mindspring.com (Renata Sato) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar19.122533.9068@mindspring.com> Date: Sun, 19 Mar 1995 12:25:33 GMT References: <1995Mar19.010133.6865@u-tokyo.ac.jp> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1995Mar19.010133.6865@u-tokyo.ac.jp>, operez@u-tokyo.ac.jp (Olga Pérez) writes: > Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Renata Sato *PLONK* filter active for trolls. Macintosh IIfx - NetBSD 1.0 From keriksson@titech.ac.jp Tue Mar 21 15:48:33 1995 Path: ashpoly!cascade!brgate!saturno!titech!keriksson From: keriksson@titech.ac.jp (Katrin Eriksson) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar21.154833.5347@titech.ac.jp> Date: Tue, 21 Mar 1995 15:48:33 GMT References: <1995Mar19.010133.6865@u-tokyo.ac.jp> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Mar19.010133.6865@u-tokyo.ac.jp>, operez@u-tokyo.ac.jp (Olga Pérez) 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. -- === Katrin Eriksson === Dept of Electrical Engineering, Tokyo Institute of Technology Computer Centre "Hold for relay." From mdubois@berkeley.edu Tue Mar 21 18:15:33 1995 Path: ashpoly!cascade!brgate!saturno!berkeley!mdubois From: mdubois@berkeley.edu (Mateo Dubois) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar21.181533.5528@berkeley.edu> Date: Tue, 21 Mar 1995 18:15:33 GMT References: <1995Mar19.010133.6865@u-tokyo.ac.jp> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Mar19.010133.6865@u-tokyo.ac.jp>, operez@u-tokyo.ac.jp (Olga Pérez) 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. -- === Mateo Dubois === Dept of Electrical Engineering, UC Berkeley Department of EECS "Extraordinary claims require extraordinary spectra." From ymoreau@demon.co.uk Thu Mar 23 03:57:33 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!demon!ymoreau From: ymoreau@demon.co.uk (Yuki Moreau) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar23.035733.1966@demon.co.uk> Date: Thu, 23 Mar 1995 03:57:33 GMT References: <1995Mar19.010133.6865@u-tokyo.ac.jp> <1995Mar19.122533.9068@mindspring.com> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Mar19.122533.9068@mindspring.com>, rsato@mindspring.com (Renata Sato) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. > Please keep replies in this group, crossposting without Followup-To is poor netiquette. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Yuki Moreau Opinions expressed are solely my own and not those of Demon Internet Services UK. ------------------------------------------------------------