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Mail Archives: djgpp/1996/07/15/11:59:37

Xref: news2.mv.net comp.os.msdos.djgpp:5903
From: Thomas Demmer <demmer AT LSTM DOT Ruhr-UNI-Bochum DOT De>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Interesting Timings
Date: Fri, 12 Jul 1996 09:33:27 +0100
Organization: Lehrstuhl fuer Stroemungsmechanik
Lines: 55
Message-ID: <31E60DD7.446B@LSTM.Ruhr-UNI-Bochum.De>
References: <31E3CD8F DOT 94A AT anolis DOT bnr DOT usu DOT edu>
NNTP-Posting-Host: bvb.lstm.ruhr-uni-bochum.de
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

James W. Haefner wrote:
> 
> Here are some runtimes for a genetic programming
> problem written in C++ executed with Borland 4.5
> (in a Win3.1 DOS box) and djgpp-v2 in Win and straight
> DOS using CWSDPMI...  Note the overhead associated with
> Win3.1
> 
> Pop 200, Gen 2, Seed 12345:
> Borland:        realtime=371.74 (sec)
> Gnu in win:     realtime=148.8
> Gnu in dos:     realtime=97.0
> 
> Pop 800, Gen 1, Seed 12345:
> Borland:       realtime=940.54
> Gnu in dos:    realtime=241.43

This will hopefully shut up everyone complaining about
stupid things like .EXE-sizes. If not, here's another thing:

Delaunay triangulation of 976 nodes, giving 2932 edges and 1830
elements:
IBM RISC/6000, 380, 3AT with 99.3 SPECint92 and 187.2 SPECfp92:
 realtime	12s
486/100, no name
 realtime       22s



The price for the IBM was around $30000, for the NoName about $2000.
Running this on a P166 might be interesting.

To be fair, the triangulation is a process of the order n*n, so on
larger meshes the balance gets better for the IBM, but you get the idea.

If I just had had DJGPP when I wrote my diploma-thesis...

Who needs BC, anyway?

-- 
Ciao
Tom



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* Thomas Demmer                                             *
* Lehrstuhl fuer Stroemungsmechanik                         *
* Ruhr-Uni-Bochum                                           *
* Universitaetsstr. 150                                     *
* D-44780  Bochum                                           *
* Tel: +49 234 700 6434                                     *
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* http://www.lstm.ruhr-uni-bochum.de/~demmer                *
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