From bstewart@earthlink.net Sat Nov 04 06:44:44 1995
Path: ashpoly!cascade!mxgate!coyoacan!earthlink!bstewart
From: bstewart@earthlink.net (Bastien Stewart)
Newsgroups: comp.sys.m68k
Subject: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Nov04.064444.7532@earthlink.net>
Date: Sat, 04 Nov 1995 06:44:44 GMT
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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.
Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes.

Make sure you install the 32-bit Enabler on older IIci machines running System 7.1!

-- 
Bastien Stewart | bstewart@earthlink.net
PGP Key fingerprint: 5F31 CE1F 4921 5CB0
"Keep the channels open."

From anilsson@clari.net Sun Nov 05 03:10:44 1995
Path: ashpoly!cascade!mxgate!coyoacan!clari!anilsson
From: anilsson@clari.net (Amy Nilsson)
Newsgroups: comp.sys.m68k
Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Nov05.031044.9402@clari.net>
Date: Sun, 05 Nov 1995 03:10:44 GMT
References: <1995Nov04.064444.7532@earthlink.net>
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In article <1995Nov04.064444.7532@earthlink.net>, bstewart@earthlink.net (Bastien Stewart) 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.

Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin!

-- 
Amy Nilsson -- ClariNet Communications Corp
"Measuring a record you own is listening, not piracy."

From bsokolov@kiae.su Mon Nov 06 21:08:44 1995
Path: ashpoly!bigsur!pacrim!krgate!eunha!kiae!bsokolov
From: bsokolov@kiae.su (Bastien Sokolov)
Newsgroups: comp.sys.m68k
Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Nov06.210844.9423@kiae.su>
Date: Mon, 06 Nov 1995 21:08:44 GMT
References: <1995Nov04.064444.7532@earthlink.net>
Organization: Kurchatov Institute of Atomic Energy, Moscow
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In article <1995Nov04.064444.7532@earthlink.net>, bstewart@earthlink.net (Bastien Stewart) 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.

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

-- 
Bastien Sokolov
Opinions expressed are solely my own and not those of Kurchatov Institute of Atomic Energy, Moscow.
------------------------------------------------------------

From tsilva@cam.ac.uk Wed Nov 08 10:55:44 1995
Path: ashpoly!cascade!brgate!saturno!cam!tsilva
From: tsilva@cam.ac.uk (Tomas Silva)
Newsgroups: comp.sys.m68k
Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Nov08.105544.9406@cam.ac.uk>
Date: Wed, 08 Nov 1995 10:55:44 GMT
References: <1995Nov04.064444.7532@earthlink.net> <1995Nov06.210844.9423@kiae.su>
Organization: University of Cambridge Computer Laboratory
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In article <1995Nov06.210844.9423@kiae.su>, bsokolov@kiae.su (Bastien Sokolov) writes:
> Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field.

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

-- 
=== Tomas Silva ===
Dept of Electrical Engineering, University of Cambridge Computer Laboratory
"We don't sign stars. We build them."