From lcampbell@kth.se Wed Nov 01 15:58:39 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!kth!lcampbell From: lcampbell@kth.se (Lucia Campbell) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov01.155839.9660@kth.se> Date: Wed, 01 Nov 1995 15:58:39 GMT Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Lucia Campbell | lcampbell@kth.se PGP Key fingerprint: 61A7 3C29 E7AB 7B97 "Keep the channels open." From lpetrov@panix.com Wed Nov 01 21:14:39 1995 Path: ashpoly!cascade!bigsur!panix!lpetrov From: lpetrov@panix.com (Lucia Petrov) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov01.211439.4403@panix.com> Date: Wed, 01 Nov 1995 21:14:39 GMT References: <1995Nov01.155839.9660@kth.se> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Nov01.155839.9660@kth.se>, lcampbell@kth.se (Lucia Campbell) writes: > Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? > By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- === Lucia Petrov === Dept of Electrical Engineering, Public Access Unix of New York "Tape doesn't lie at 02:14. Ears do." From isantos@hanse.de Wed Nov 01 22:10:39 1995 Path: ashpoly!cascade!mxgate!coyoacan!hanse!isantos From: isantos@hanse.de (Ines Santos) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov01.221039.5045@hanse.de> Date: Wed, 01 Nov 1995 22:10:39 GMT References: <1995Nov01.155839.9660@kth.se> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1995Nov01.155839.9660@kth.se>, lcampbell@kth.se (Lucia Campbell) 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. -- Ines Santos -- Hanse-Netzwerk Hamburg "The hatch is open. Is anyone listening?" From mgirard@clari.net Fri Nov 03 11:35:39 1995 Path: ashpoly!cascade!transat!ukc!fennimore!clari!mgirard From: mgirard@clari.net (Mateo Girard) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov03.113539.6191@clari.net> Date: Fri, 03 Nov 1995 11:35:39 GMT References: <1995Nov01.155839.9660@kth.se> <1995Nov01.211439.4403@panix.com> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Nov01.211439.4403@panix.com>, lpetrov@panix.com (Lucia Petrov) 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. -- Mateo Girard Hayes Optima 288 @ 14,400 bps "5 sigma is a discovery. 7 is a question." From ajohansson@ox.ac.uk Sat Nov 04 23:11:39 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!ox!ajohansson From: ajohansson@ox.ac.uk (Anton Johansson) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov04.231139.8920@ox.ac.uk> Date: Sat, 04 Nov 1995 23:11:39 GMT References: <1995Nov01.155839.9660@kth.se> <1995Nov01.221039.5045@hanse.de> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Nov01.221039.5045@hanse.de>, isantos@hanse.de (Ines Santos) 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. -- Anton Johansson Opinions expressed are solely my own and not those of Oxford University Computing Laboratory. ------------------------------------------------------------