Author: John R. Menke, Sr.
Date: 21:31:29 09/21/99
Go up one level in this thread
Hi Odell, Your Hiarcs 7.32 settings are the same as mine, except for hash table size which is dependent on the available RAM on each machine. I just want to mention that these chess programs do not always run at the same speed on the same computer and with the same settings. I posted that question here recently. It has to do with cache and mapping of the executable application into RAM. Depending on the "luck of the draw" in that regard, there may be as much as a 2X (possibly more) variance in speed of the resulting calculations (analysis). And with a difference in speed, the "best" moves found will of course be different because different ply depths are reached in the search. To put it another way, this is not an exact science because our machines are not giving us reproducible results! Test it for yourself. Pick out any position and see how long analysis takes to reach a certain ply depth, or some such benchmark. If you run the same test several times, you will see that there is a variance -- a bigger one than you probably expected. It may depend on the history of recent operations on your machine, any multitasking, how hot your processor happens to be, etc. It's more of an art than a science, at this stage of development. --JRM On September 21, 1999 at 20:38:12, odell hall wrote: >Hi CCC > > In an attempt to explain the discrepancy of moves between my hiarcs7.32 and >others in this group I looked at my "engine parameters" within the fritz5.32 >interface this is what I had > >Playing style=Normal >contempt value 15 >hash =38912 >selectivity=5 >Postional learning=on >use of tablebases=on > > >Is this how it should look? Is my selectivity correct? Otherwise I am simply at >a loss to explain the move discrepancy
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.