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parallelisering

To: sslug@sslug
Subject: parallelisering
From: Sune Fischer <sslug@sslug>
Date: Mon, 27 Mar 2000 05:06:00 -0800 (PST)

Hey

Jeg må sige jeg er en smule forundret, brugte søndagen
på at parallelisere et program, det lykkedes perfekt
med en paralleliseringsgrad på ca. 95 procent.
Det der må undre er at det "kun" kører 23 procent
hurtigere??
Programmet er rimeligt cache fjendtligt, i det det
hele tiden skal gennemløbe gigant arrays, jeg antager
dette også kan spille en rolle.
Nu bruger jeg RH 6.0, der skulle være bedre support
for dual processering i nyere kerner, kan dette mon
hjælpe lidt på vej?

Er der nogen med lidt erfaringer på dette felt?
(gode compiler flag ect.)


Hilsen
Sune

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