From cgarcia@cam.ac.uk Mon May 22 06:52:37 1995 Path: ashpoly!cascade!brgate!saturno!cam!cgarcia From: cgarcia@cam.ac.uk (Camila García) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May22.065237.9956@cam.ac.uk> Date: Mon, 22 May 1995 06:52:37 GMT Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 10 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? -- Camila García Tape trading list upon request. SASE required for international mail. From bnovak@earthlink.net Mon May 22 16:02:37 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!earthlink!bnovak From: bnovak@earthlink.net (Brian Novak) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May22.160237.9929@earthlink.net> Date: Mon, 22 May 1995 16:02:37 GMT References: <1995May22.065237.9956@cam.ac.uk> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995May22.065237.9956@cam.ac.uk>, cgarcia@cam.ac.uk (Camila García) writes: > Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Brian Novak | bnovak@earthlink.net PGP Key fingerprint: 240F 25CD C1C8 1F47 "Keep the channels open." From inilsson@kiae.su Mon May 22 22:52:37 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!kiae!inilsson From: inilsson@kiae.su (Ines Nilsson) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May22.225237.2797@kiae.su> Date: Mon, 22 May 1995 22:52:37 GMT References: <1995May22.065237.9956@cam.ac.uk> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995May22.065237.9956@cam.ac.uk>, cgarcia@cam.ac.uk (Camila García) 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. -- Ines Nilsson | inilsson@kiae.su PGP Key fingerprint: 3536 1E2A 0776 0133 "Keep the channels open." From hfournier@cam.ac.uk Wed May 24 10:57:37 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!cam!hfournier From: hfournier@cam.ac.uk (Heather Fournier) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May24.105737.4328@cam.ac.uk> Date: Wed, 24 May 1995 10:57:37 GMT References: <1995May22.065237.9956@cam.ac.uk> <1995May22.225237.2797@kiae.su> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995May22.225237.2797@kiae.su>, inilsson@kiae.su (Ines Nilsson) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. PGP Public key available via finger or upon request. -- Heather Fournier -- University of Cambridge Computer Laboratory "The hatch is open. Is anyone listening?" From cduarte@titech.ac.jp Thu May 25 10:39:37 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!titech!cduarte From: cduarte@titech.ac.jp (Camila Duarte) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May25.103937.4145@titech.ac.jp> Date: Thu, 25 May 1995 10:39:37 GMT References: <1995May22.065237.9956@cam.ac.uk> <1995May22.160237.9929@earthlink.net> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995May22.160237.9929@earthlink.net>, bnovak@earthlink.net (Brian Novak) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. PGP Public key available via finger or upon request. -- Camila Duarte -- Tokyo Institute of Technology Computer Centre "Tape doesn't lie at 02:14. Ears do."