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List:       beowulf
Subject:    Re: Athlon memory speed asymmetry
From:       Eray Ozkural <exa () ttnet ! net ! tr>
Date:       2003-02-26 11:30:56
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On Tuesday 25 February 2003 18:27, David Mathog wrote:
> I'm observing an odd asymmetry in memory utilization on
> Athlons.  Trivial array operations (read then write)
> are up to 30% faster going up through the array then
> down through the array.

Maybe it's a simple matter of AMD taking upwards memory iteration a common 
operation and optimizing the architecture for it... They'd do anything to 
improve those application benchmarks :)

Thanks,

-- 
Eray Ozkural (exa) <erayo@cs.bilkent.edu.tr>
Comp. Sci. Dept., Bilkent University, Ankara
www: http://www.cs.bilkent.edu.tr/~erayo  Malfunction: http://mp3.com/ariza
GPG public key fingerprint: 360C 852F 88B0 A745 F31B  EA0F 7C07 AE16 874D 539C

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