Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: HyperThreading & Comp v Comp matches

Author: Jason Kent

Date: 12:03:52 11/22/04

Go up one level in this thread


On November 22, 2004 at 12:34:33, Ray Banks wrote:

>On November 22, 2004 at 12:28:37, Jason Kent wrote:
>
>>On November 22, 2004 at 12:11:58, Steve Maughan wrote:
>>
>>>Bob,
>>>
>>>Thanks for the reply
>>>
>>>>It is difficult for _any_ program to figure out what is going on, since
>>>>hyper-threading makes the O/S think there are two equal CPUs, when there
>>>>really is not...  for engine vs engine you should turn it off in the BIOS...
>>>
>>>I tried to turn it off in the Bios and it didn't seem to be possible.
>>>
>>>Steve
>>
>>I've run tournaments with and without HT.  Don't use multi-processor engines
>>(shredder, deep fritz, etc.) with HT on.
>>

That isn't possible under the Arena GUI is it?
>>There is a setting in my BIOS that lets me turn HT on and off, maybe you missed
>>the setting when you checked.
>
>I had the same dilemma. I could turn HT off in the BIOS but didn't want to. It
>is too good a feature for general use that you don't want it to turn it off.
>The easy way is on the dual processor capable engines to simply alter the engine
>parameters to only use 1 thread or processor. That is how I'm running my P4
>tournament. So Shredder, Fritz show as 50% useage the same as the single
>processor engines like Pro Deo, Ruffian etc



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.