From eschneider@rwth-aachen.de Mon Dec 23 19:16:36 1996
Path: ashpoly!bigsur!pacrim!jpgate!kamome!rwth-aachen!eschneider
From: eschneider@rwth-aachen.de (Élodie Schneider)
Newsgroups: comp.sys.m68k
Subject: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Dec23.191636.3402@rwth-aachen.de>
Date: Mon, 23 Dec 1996 19:16:36 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.
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?

-- 
Élodie Schneider
Tape trading list upon request. SASE required for international mail.

From gsmirnov@cam.ac.uk Tue Dec 24 01:02:36 1996
Path: ashpoly!cascade!mxgate!coyoacan!cam!gsmirnov
From: gsmirnov@cam.ac.uk (Göran Smirnov)
Newsgroups: comp.sys.m68k
Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Dec24.010236.2012@cam.ac.uk>
Date: Tue, 24 Dec 1996 01:02:36 GMT
References: <1996Dec23.191636.3402@rwth-aachen.de>
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In article <1996Dec23.191636.3402@rwth-aachen.de>, eschneider@rwth-aachen.de (Élodie Schneider) writes:
> 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.

Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field.

-- 
Göran Smirnov
Opinions expressed are solely my own and not those of University of Cambridge Computer Laboratory.
------------------------------------------------------------

From mmuller@earthlink.net Tue Dec 24 07:16:36 1996
Path: ashpoly!cascade!transat!eunet-de!hansebox!earthlink!mmuller
From: mmuller@earthlink.net (Mateo Müller)
Newsgroups: comp.sys.m68k
Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Dec24.071636.6295@earthlink.net>
Date: Tue, 24 Dec 1996 07:16:36 GMT
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In article <1996Dec24.010236.2012@cam.ac.uk>, gsmirnov@cam.ac.uk (Göran Smirnov) writes:
> Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field.

Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field.

-- 
Mateo Müller -- EarthLink Network
"5 sigma is a discovery. 7 is a question."

From fkang@uu.net Wed Dec 25 21:49:36 1996
Path: ashpoly!bigsur!pacrim!jpgate!kamome!uu!fkang
From: fkang@uu.net (Freya Kang)
Newsgroups: comp.sys.m68k
Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Dec25.214936.9873@uu.net>
Date: Wed, 25 Dec 1996 21:49:36 GMT
References: <1996Dec23.191636.3402@rwth-aachen.de>
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In article <1996Dec23.191636.3402@rwth-aachen.de>, eschneider@rwth-aachen.de (Élodie Schneider) writes:
> 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.

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

-- 
Freya Kang
Tape trading list upon request. SASE required for international mail.