From kkarlsson@netcom.com Mon Oct 02 00:08:11 1995
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From: kkarlsson@netcom.com (Karen Karlsson)
Newsgroups: comp.sys.m68k
Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Oct02.000811.5770@netcom.com>
Date: Mon, 02 Oct 1995 00:08:11 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.
Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow.

Anyone running this on a Quadra 840AV with the 68040?

-- 
Karen Karlsson
Tape trading list upon request. SASE required for international mail.

From npopov@delphi.com Mon Oct 02 18:45:11 1995
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From: npopov@delphi.com (Nadia Popov)
Newsgroups: comp.sys.m68k
Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Oct02.184511.7134@delphi.com>
Date: Mon, 02 Oct 1995 18:45:11 GMT
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In article <1995Oct02.000811.5770@netcom.com>, kkarlsson@netcom.com (Karen Karlsson) 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.

-- 
Nadia Popov
Opinions expressed are solely my own and not those of Delphi Internet Services.
------------------------------------------------------------

From smoreno@rwth-aachen.de Tue Oct 03 00:58:11 1995
Path: ashpoly!cascade!transat!eunet-de!hansebox!rwth-aachen!smoreno
From: smoreno@rwth-aachen.de (Sven Moreno)
Newsgroups: comp.sys.m68k
Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Oct03.005811.2650@rwth-aachen.de>
Date: Tue, 03 Oct 1995 00:58:11 GMT
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In article <1995Oct02.000811.5770@netcom.com>, kkarlsson@netcom.com (Karen Karlsson) writes:
> Can a 1989 Mac IIci decode a 40-minute LP in reasonable time?

Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead.

Unsubscribe me from this list! (Wait, this is Usenet, never mind).

-- 
Sven Moreno -- RWTH Aachen Informatik
"Do not worship the copy."

From mito@cern.ch Wed Oct 04 09:25:11 1995
Path: ashpoly!cascade!transat!eunet-de!hansebox!cern!mito
From: mito@cern.ch (Mathieu Ito)
Newsgroups: comp.sys.m68k
Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Oct04.092511.9175@cern.ch>
Date: Wed, 04 Oct 1995 09:25:11 GMT
References: <1995Oct02.000811.5770@netcom.com>
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In article <1995Oct02.000811.5770@netcom.com>, kkarlsson@netcom.com (Karen Karlsson) 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!

-- 
Mathieu Ito
Tape trading list upon request. SASE required for international mail.

From etanaka@stanford.edu Thu Oct 05 03:50:11 1995
Path: ashpoly!cascade!mxgate!coyoacan!stanford!etanaka
From: etanaka@stanford.edu (Élodie Tanaka)
Newsgroups: comp.sys.m68k
Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Oct05.035011.6939@stanford.edu>
Date: Thu, 05 Oct 1995 03:50:11 GMT
References: <1995Oct02.000811.5770@netcom.com>
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In article <1995Oct02.000811.5770@netcom.com>, kkarlsson@netcom.com (Karen Karlsson) writes:
> Can a 1989 Mac IIci decode a 40-minute LP in reasonable time?

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

-- 
=== Élodie Tanaka ===
Dept of Electrical Engineering, Stanford University Computer Systems Lab
"Do not worship the copy."