From msilva@rwth-aachen.de Tue Nov 22 17:23:31 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!rwth-aachen!msilva From: msilva@rwth-aachen.de (Mike Silva) Newsgroups: comp.sys.m68k Subject: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Nov22.172331.9055@rwth-aachen.de> Date: Tue, 22 Nov 1994 17:23:31 GMT Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: TIN [version 1.2 PL2] 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. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Anyone running this on a Quadra 840AV with the 68040? -- Mike Silva "We don't sign stars. We build them." Decstation 5000/200 / FreeBSD 2.1 From sgirard@uu.net Thu Nov 24 13:26:31 1994 Path: ashpoly!cascade!transat!ukc!fennimore!uu!sgirard From: sgirard@uu.net (Sven Girard) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Nov24.132631.6597@uu.net> Date: Thu, 24 Nov 1994 13:26:31 GMT References: <1994Nov22.172331.9055@rwth-aachen.de> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Nov22.172331.9055@rwth-aachen.de>, msilva@rwth-aachen.de (Mike Silva) 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. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Sven Girard -- UUNET Technologies, Falls Church VA "Tape doesn't lie at 02:14. Ears do." From psouza@kth.se Fri Nov 25 06:48:31 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!kth!psouza From: psouza@kth.se (Pavel Souza) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Nov25.064831.2844@kth.se> Date: Fri, 25 Nov 1994 06:48:31 GMT References: <1994Nov22.172331.9055@rwth-aachen.de> <1994Nov24.132631.6597@uu.net> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Nov24.132631.6597@uu.net>, sgirard@uu.net (Sven Girard) 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. -- Pavel Souza Opinions expressed are solely my own and not those of Royal Institute of Technology, Stockholm. ------------------------------------------------------------