Author: chandler yergin
Date: 02:17:24 11/24/05
Go up one level in this thread
On November 23, 2005 at 14:24:47, Uri Blass wrote: >On November 23, 2005 at 14:00:00, chandler yergin wrote: > >>On November 22, 2005 at 05:20:59, Uri Blass wrote: >> >>>On November 22, 2005 at 05:17:44, Lin Harper wrote: >>> >>>>On November 22, 2005 at 02:35:15, Alexander Ermolenko wrote: >>>> >>>>>Why max Hashtable Limit for Fruit is 1024 ? >>>> This does'nt answer your question, but I just as an experiment, set up a >>>>position and analyze it with just 1mb hash. Check the nps. Now reset the same >>>>position and set your hash to the maximum. Check the nps again. See a >>>>difference? >>>>There appears to be a trade-off between speed and hash size. I'm no expert, but >>>>it seems to me that optimal playing strength will be had with a moderate hash >>>>size. >>>> regards >>>> Lin >>> >>>I think that this is the wrong way to test hash. >>>You should test time to solution and not nodes per second. >>What solution? > >You can choose test positions and find the time to find the right move and >compare. My solution is quick & simple. As was noted by another Poster.. simply Set Max Hash and read the kn/S Reset to 1 Mg Hash and check Kn/S No comparison! Every Engine will evaluate a poition differently. Since you are not fond of using Multple Lines to see how the Engine evaluates the Top 5 Choices.. you'll wind up sitting and waiting. That's just wasting time.. > >Here are some examples from the gcp test suite > >[D]1r5r/3b1pk1/3p1np1/p1qPp3/p1N1PbP1/2P2PN1/1PB1Q1K1/R3R3 b - - 01 bm Nxg4 >[D]b3r3/q2B2k1/3Q2p1/1p5p/3pP3/5P2/1p4PP/5RK1 b - - bm d3+ >[D]r1bq1rk1/pp2bp1p/2p2np1/3p2B1/3P4/2NQ2N1/PPP2PPP/4RRK1 w - - bm Rxe7 >[D]2r1rbk1/5pp1/bq5p/1pnBPN2/6Q1/N7/5PPP/R2R2K1 w - - bm Bxf7+ >[D]2r1r1k1/pp1nbpp1/4pn1p/q3NN1P/P1pP1B2/2P5/1PQ2PP1/R3R1K1 w - - bm Nxg7 > >Uri Hash is automatically set by the Processor speed.. what is optimum and Max for the system being used. Right click on the Engine in the analysis window. The Menu tells you what that is. If you try to exceed that you get a Warning that it will slow down performance. In Blitz you want speed. Min Hash! 1 Mg is fine. As was noted by another Poster.. simply Set Max Hash and read the kn/S Reset to 1 Mg Hash and check Kn/S No comparison! Long games you need large Hash.
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.