Author: Uri Blass
Date: 22:50:18 11/23/04
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On November 23, 2004 at 23:10:16, Robert Hyatt wrote: >On November 23, 2004 at 01:30:47, Uri Blass wrote: > >>On November 23, 2004 at 01:11:10, Ray Banks wrote: >> >>>On November 22, 2004 at 23:20:58, Robert Hyatt wrote: >>> >>>>I use ponder-on all the time, one cpu or not... If both engines ponder, each >>>>gets 1/2 the processor, and that doesn't disrupt normal time allocation... >>> >>>Why does everyone use ponder off then on their tourneys? >>> >>>I've previously been told that with a single processor you can't guarantee each >>>engine will get 50%, therefore to use ponder off. >> >>engines that ponder often do not ponder all the time. >>They ponder only most of the time and they may not ponder when there is a single >>move or when they are in book and engines that ponder in these cases have bigger >>advantage relative to their advantage in real games. >> >>Uri > > >This goes back to the old days of Ed complaining about "doubles" in the SSDF >games. I told him more than once "just solve it yourself and it will be solved >for all time. If you wait for the SSDF to handle doubles, you will be waiting >for a long time." Ditto for pondering. It is _not_ hard to always have >something to ponder... I do not say that it is hard but it is not very important for playing strength and there are more important things that I prefer to fix. Pondering in most of the cases is enough for a lot of programmers. I do not ponder when movei has a single move in the pv or when it is in book and there are more important things to do to improve the engine. I have no problem that movei is slightly handicapped by it in real games but I do not like to get another handicap by playing on one cpu with ponder on. Uri
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