Author: Robert Hyatt
Date: 06:31:28 07/30/01
Go up one level in this thread
On July 29, 2001 at 10:50:47, Frank Quisinsky wrote: > >Hi Bob, > >the same discuss then for 2 years here :-) > >I, the ex non ponderer, will say the following: > >01. >You have right if you say that with ponder = off engines have time manangment >problems, not all and not in all games but it's an important point. I know that >this is for statistics not sooo important (ELO statistic). > >02. >Match without ponder on single system with Athlon 1Ghz: >Engine A = 1Ghz >Engine B = 1Ghz > >Match with ponder on a single system with Athlon 1Ghz: >Engine A = ~ 497-500Mhz >Engine B = ~ 497-500Mhz > >Now we have 25-40% ponder hits if the engines play on the same level (after my >experiments). > >Result: >500Mhz + 25-40% ponder hits = ~700MHz. > >With ponder = on, the matches are running with 700Mhz on 1Ghz Athlon! >With ponder = off, the matches are running with 1Ghz on 1Ghz Athlon! > >I believe better is to play with ponder = off on single system. OK, the time >managment is a good point so say please with ponder but 300 MHz is a better >point to say please without ponder. > >03. >4-piece and 5-piece tablebases and engine-engine matches on a Dual system ... > >This is not very clear. >We have engines witch used tablebases very aggressive or not very aggressive. > >Example: >Gromit - Patzer with 5-pieces ... > >Gromit played move 50 in 2:45 with ponder = on and 5-pieces. >Only 20-30% processor time in this game if Gromit used 5-pieces. >Patzer played move 50 in 1.25 with ponder = on and 5-pieces. > >Now the same positions with 4-pieces ... > >Gromit play move 50 in 1.58! with ponder = on and *4-pieces*. >Patzer played move 50 in 1.13 with ponder = on and *4-pieces*. > >Without 4-piece tablesbases are the differents not very important. > >In my opinion it is better to play eng-eng matches with ponder on a dual system >with 4-piece tablebases. > >Best >Frank Your math is fine. But your reasoning is wrong. Which would you rather do: (1) play a match between two programs, using their strongest settings, and using two 700mhz processors; (2) play a match between two programs, using weaker settings on at least one, if not both, using two 1ghz processors? I vote for (1) because of using the strongest settings. You are voting for (2) to avoid wasting compute cycles. I think (1) is more important...
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.