Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Bigger hash really better?

Author: Wayne Lowrance

Date: 22:37:29 12/18/03

Go up one level in this thread


On December 19, 2003 at 01:28:35, Slater Wold wrote:

>On December 19, 2003 at 01:21:45, Jouni Uski wrote:
>
>>After installing more RAM to my Pentium 2,4 GHz I tested Fritz8 in some test
>>suites with 128MB and 384MB hash (time limit was 10 minutes and positions quite
>>hard = average solution times around 3-5 minutes): to my surprise
>>average solution time was shorter with 128MB! Why? Absolutely no hard disk
>>swapping with 512MB total RAM!
>>
>>Jouni
>
>Windows is kinda crappy here...
>
>I watched Bob go from 384MB to 4096MB hash the other nite, and his NPS did _NOT_
>slow down.  Not even a FRACTION of a percent.  Of course, he was running SuSe
>(Linux).
>
>In Windows, that isn't going to happen.  Every single time you edge your hash
>up, you'll probably see a slowing down of NPS.  Why?  Swapping.  Windows does
>*too* much of it.
>
>Turn your swap file off, and see what happens.  ;)

please explain this swapping.
Thank you



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.