Author: A.G.B. Bluemers
Date: 15:28:52 10/12/04
Go up one level in this thread
On October 12, 2004 at 09:07:44, Aaron Gordon wrote: >On October 11, 2004 at 19:25:22, joseph soney wrote: > >>Could someone please explain to me this setting. I am trying to find the >>optimum hash setting size for Blitz games under five minutes. This Shreddermark >>function seems to not help me at all. I have done tests with time of 5-L and >>various hash table sizes. Here are some: 16-96 hash = 5569 score; 128-192 hash >>= 3712 score; 256 hash = 2828 score; and last 512 hash = 1679 score. Now, you >>would think the high score would give me the best overall playing result but >>sadly this doesn't appear to be true. It appears to play the best at 512, but >>may get into time trouble. Anyway, I'm more lost than ever. Could someone >>either (a) tell me how to use Shreddermark so I can find these hash table sizes >>out; or (b) just tell me the hash table size I need for 5 minute and under games >>based on this configuration: Dual AMD Opteron 250, 1.5 gig pc3200 ram. >>Thanks in advance >>Please somebody help me. > >The Shreddermark is seriously messed up. Don't bother with it, it is a waste of >time. > >Basically for your system the best hash settings would be 256mb in >lightning/bullet (1 0, 2 0), 512mb in blitz games (3 0 to 14 0).. anything over >15 0 use 1024mb. > >If you want to test NPS (more important is time to find the right move), or run >test sets with different hash sizes you'll need to lock your learning file. To >do this you'll need to rename your shredder.plr file in your Chessbase\engines >directory. Now, go into Shredder and setup a position.. anything. 2 kings and 2 >pawns. Start infinite analysis so it will create another shredder.plr file. >Exit, go to your engines directory and right click/properties on the new >shredder.plr. Set it to read-only. you also might uncheck learning in engine options. >Now you can do your testing with test-sets or whatever else you'd like without >the learn file messing up the results. as an alternative install "shredder classic" from the cdrom.engine options:In the engine window you can see the % hash usage.
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