From jlarsson@kth.se Thu Jul 04 11:57:53 1996
Path: ashpoly!bigsur!pacrim!jpgate!kamome!kth!jlarsson
From: jlarsson@kth.se (Jens Larsson)
Newsgroups: comp.sys.m68k
Subject: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Jul04.115753.5730@kth.se>
Date: Thu, 04 Jul 1996 11:57:53 GMT
Organization: Royal Institute of Technology, Stockholm
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Can a 1989 Mac IIci decode a 40-minute LP in reasonable time?

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.

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

-- 
Jens Larsson
Tape trading list upon request. SASE required for international mail.

From hreyes@ox.ac.uk Fri Jul 05 08:12:53 1996
Path: ashpoly!cascade!transat!eunet-fr!teletel!ox!hreyes
From: hreyes@ox.ac.uk (Hugo Reyes)
Newsgroups: comp.sys.m68k
Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Jul05.081253.6440@ox.ac.uk>
Date: Fri, 05 Jul 1996 08:12:53 GMT
References: <1996Jul04.115753.5730@kth.se>
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In article <1996Jul04.115753.5730@kth.se>, jlarsson@kth.se (Jens Larsson) 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.

If you are posting from AOL, please read RFC 1036 before posting again.

-- 
Hugo Reyes -- Oxford University Computing Laboratory
"They will send a copy in my place."

From rstewart@pipeline.com Sat Jul 06 15:54:53 1996
Path: ashpoly!cascade!mxgate!coyoacan!pipeline!rstewart
From: rstewart@pipeline.com (Renata Stewart)
Newsgroups: comp.sys.m68k
Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Jul06.155453.8485@pipeline.com>
Date: Sat, 06 Jul 1996 15:54:53 GMT
References: <1996Jul04.115753.5730@kth.se>
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In article <1996Jul04.115753.5730@kth.se>, jlarsson@kth.se (Jens Larsson) 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.

-- 
Renata Stewart -- The Pipeline Internet Network
"We don't sign stars. We build them."

From mokonkwo@utexas.edu Sun Jul 07 21:34:53 1996
Path: ashpoly!cascade!mxgate!coyoacan!utexas!mokonkwo
From: mokonkwo@utexas.edu (Min-jun Okonkwo)
Newsgroups: comp.sys.m68k
Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Jul07.213453.3056@utexas.edu>
Date: Sun, 07 Jul 1996 21:34:53 GMT
References: <1996Jul04.115753.5730@kth.se> <1996Jul06.155453.8485@pipeline.com>
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In article <1996Jul06.155453.8485@pipeline.com>, rstewart@pipeline.com (Renata Stewart) 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.

-- 
Min-jun Okonkwo
Opinions expressed are solely my own and not those of University of Texas at Austin.
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