From skang@u-tokyo.ac.jp Thu Nov 07 10:48:40 1996
Path: ashpoly!cascade!bigsur!u-tokyo!skang
From: skang@u-tokyo.ac.jp (Steve Kang)
Newsgroups: comp.sys.m68k
Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Nov07.104840.8652@u-tokyo.ac.jp>
Date: Thu, 07 Nov 1996 10:48:40 GMT
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Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).

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.

I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector.

-- 
Steve Kang
Opinions expressed are solely my own and not those of University of Tokyo Department of Information Science.
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From jfischer@pacbell.net Fri Nov 08 16:41:40 1996
Path: ashpoly!bigsur!pacrim!krgate!eunha!pacbell!jfischer
From: jfischer@pacbell.net (Jens Fischer)
Newsgroups: comp.sys.m68k
Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Nov08.164140.8862@pacbell.net>
Date: Fri, 08 Nov 1996 16:41:40 GMT
References: <1996Nov07.104840.8652@u-tokyo.ac.jp>
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In article <1996Nov07.104840.8652@u-tokyo.ac.jp>, skang@u-tokyo.ac.jp (Steve Kang) writes:
> Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).

The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds.

-- 
Jens Fischer
Opinions expressed are solely my own and not those of Pacific Bell Internet Services.
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From alaurent@mit.edu Sat Nov 09 07:41:40 1996
Path: ashpoly!cascade!mxgate!coyoacan!mit!alaurent
From: alaurent@mit.edu (Amy Laurent)
Newsgroups: comp.sys.m68k
Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Nov09.074140.5190@mit.edu>
Date: Sat, 09 Nov 1996 07:41:40 GMT
References: <1996Nov07.104840.8652@u-tokyo.ac.jp> <1996Nov08.164140.8862@pacbell.net>
Organization: Massachusetts Institute of Technology
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In article <1996Nov08.164140.8862@pacbell.net>, jfischer@pacbell.net (Jens Fischer) writes:
> The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds.

The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds.

-- 
Amy Laurent
Opinions expressed are solely my own and not those of Massachusetts Institute of Technology.
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