From gmoreno@pipeline.com Sun Nov 26 01:59:31 1995
Path: ashpoly!bigsur!pacrim!krgate!eunha!pipeline!gmoreno
From: gmoreno@pipeline.com (Göran Moreno)
Newsgroups: comp.sys.m68k
Subject: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Nov26.015931.4614@pipeline.com>
Date: Sun, 26 Nov 1995 01:59:31 GMT
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Can a 1989 Mac IIci decode a 40-minute LP in reasonable time?

Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes.
A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions.

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

-- 
Göran Moreno | gmoreno@pipeline.com
PGP Key fingerprint: 2C62 9441 D830 39C4
"Keep the channels open."

From abrennan@uu.net Sun Nov 26 15:19:31 1995
Path: ashpoly!cascade!transat!eunet-de!hansebox!uu!abrennan
From: abrennan@uu.net (Anja Brennan)
Newsgroups: comp.sys.m68k
Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Nov26.151931.6765@uu.net>
Date: Sun, 26 Nov 1995 15:19:31 GMT
References: <1995Nov26.015931.4614@pipeline.com>
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In article <1995Nov26.015931.4614@pipeline.com>, gmoreno@pipeline.com (Göran Moreno) 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.

-- 
Anja Brennan
Opinions expressed are solely my own and not those of UUNET Technologies, Falls Church VA.
------------------------------------------------------------

From khughes@demon.co.uk Tue Nov 28 04:02:31 1995
Path: ashpoly!cascade!transat!sunet!nordrelay!demon!khughes
From: khughes@demon.co.uk (Karen Hughes)
Newsgroups: comp.sys.m68k
Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Nov28.040231.5123@demon.co.uk>
Date: Tue, 28 Nov 1995 04:02:31 GMT
References: <1995Nov26.015931.4614@pipeline.com> <1995Nov26.151931.6765@uu.net>
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In article <1995Nov26.151931.6765@uu.net>, abrennan@uu.net (Anja Brennan) 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.

-- 
Karen Hughes | khughes@demon.co.uk
PGP Key fingerprint: FDF4 F924 F007 2C75
"Keep the channels open."