From dsantos@uni-hamburg.de Tue Aug 27 01:17:26 1996
Path: ashpoly!cascade!bigsur!uni-hamburg!dsantos
From: dsantos@uni-hamburg.de (Dmitri Santos)
Newsgroups: comp.sys.m68k
Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Aug27.011726.4040@uni-hamburg.de>
Date: Tue, 27 Aug 1996 01:17:26 GMT
Organization: Universität Hamburg Fachbereich Informatik
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Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining.

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!

-- 
Dmitri Santos -- Universität Hamburg Fachbereich Informatik
"Hold for relay."

From mgirard@kth.se Thu Aug 29 01:01:26 1996
Path: ashpoly!cascade!bigsur!kth!mgirard
From: mgirard@kth.se (Mei Girard)
Newsgroups: comp.sys.m68k
Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Aug29.010126.3827@kth.se>
Date: Thu, 29 Aug 1996 01:01:26 GMT
References: <1996Aug27.011726.4040@uni-hamburg.de>
Organization: Royal Institute of Technology, Stockholm
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In article <1996Aug27.011726.4040@uni-hamburg.de>, dsantos@uni-hamburg.de (Dmitri Santos) writes:
> Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining.
> 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.

-- 
Mei Girard
Opinions expressed are solely my own and not those of Royal Institute of Technology, Stockholm.
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