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Re: [Bug-gnubg] Dual Core / Threading issue

From: Christian Anthon
Subject: Re: [Bug-gnubg] Dual Core / Threading issue
Date: Mon, 14 Jul 2008 10:07:38 +0200

Hi Daniel,

multiple threads are only implemented for the time consuming rollout
and analyse tasks, not for normal play. As for your observed behavior
I have no idea. Which version of gnubg and which OS are you running?


On Sun, Jul 13, 2008 at 10:55 PM, Daniel Frimerman
<address@hidden> wrote:
> During the testing of DualCore CPU I beefed up gnubg's strength (GUI
> version) and played a game.  The Task Manager showed that CPU was utilized
> for 50% and below (around 48%).  Thread count was set to 2, then 4, without
> change.  I've popped open OllyDbg and looked at the threads, and it seems
> after changing thread counts in GNU, it created the threads and they
> immediately terminated with "ERROR_NOT_ENOUGH_MEMORY".  I have 1GB RAM, and
> 700 of it is free. StackSize for CreateThread was set to 0,  so I thought
> maybe GNU's main process has a massive stack (but not massive enough), so I
> paused on the call and modified StackSize to 1MB, then 512KB without change
> to the behaviour.
> What might be the problem?  I'd have hoped that the setting for the threads
> would nearly halve the time required for the moves...... is the threading
> feature only designed for evaluations, not the play itself?
> I actually suspect there's a bug, perhaps related to the configuration of my
> system.
> Kind regards,
> Dan
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