From ejohansson@netcom.com Tue Jan 23 15:14:01 1996 Path: ashpoly!cascade!transat!ukc!fennimore!netcom!ejohansson From: ejohansson@netcom.com (Elaine Johansson) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jan23.151401.2492@netcom.com> Date: Tue, 23 Jan 1996 15:14:01 GMT Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: NewsWatcher 2.0b24 Lines: 10 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! -- Elaine Johansson Tape trading list upon request. SASE required for international mail. From sito@clari.net Thu Jan 25 02:43:01 1996 Path: ashpoly!cascade!mxgate!coyoacan!clari!sito From: sito@clari.net (Sergei Ito) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jan25.024301.6131@clari.net> Date: Thu, 25 Jan 1996 02:43:01 GMT References: <1996Jan23.151401.2492@netcom.com> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1996Jan23.151401.2492@netcom.com>, ejohansson@netcom.com (Elaine Johansson) 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. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Sergei Ito "Measuring a record you own is listening, not piracy." PC-9821Ap2 (NEC) / System 7.5.1 From fkim@inria.fr Thu Jan 25 20:00:01 1996 Path: ashpoly!cascade!mxgate!coyoacan!inria!fkim From: fkim@inria.fr (Fiona Kim) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jan25.200001.6704@inria.fr> Date: Thu, 25 Jan 1996 20:00:01 GMT References: <1996Jan23.151401.2492@netcom.com> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Jan23.151401.2492@netcom.com>, ejohansson@netcom.com (Elaine Johansson) 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. -- Fiona Kim *PLONK* filter active for trolls. Pentium 90 (OS/2 Warp) - NetBSD 1.0 From mivanov@cam.ac.uk Fri Jan 26 06:45:01 1996 Path: ashpoly!cascade!brgate!saturno!cam!mivanov From: mivanov@cam.ac.uk (Morag Ivanov) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jan26.064501.3973@cam.ac.uk> Date: Fri, 26 Jan 1996 06:45:01 GMT References: <1996Jan23.151401.2492@netcom.com> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1996Jan23.151401.2492@netcom.com>, ejohansson@netcom.com (Elaine Johansson) 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. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Morag Ivanov Zyxel U-1496E @ 19,200 bps "The carrier frequency does not drift by accident."