Author: Uri Blass
Date: 07:18:59 02/20/02
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On February 20, 2002 at 08:11:30, Gian-Carlo Pascutto wrote: >I'm wondering if Chess Tiger could have problems when >being used for overnight analysis. > >I put up the Deep Blue - Kasparov position in ChessParter 5.1, >started ChessTiger with 200M hashtables (the maximum) on the >XP 1800 and let it analyse away. > >However, after about 1.5 hour the nodecounter overflowed, >and the next PV that was printed out was cut short, and >the branching factor exploded. Either it might be on to >something, or it might be having problems with overloaded >hashtables. > >Anybody else seen this kind of problem in very long analysis runs? I know that in the past tiger13 played after some hours inspite of the fact that I told it infinite time control. This problem was fixed in tiger14 but I really doubt how much the program was tested at long time control. I know that the program may go deeper even after more than 40 hours on p800 but maybe there are positions when it has problems. I prefered to use Deep Fritz in long analysis because it is almost the only program in the world that knows to count nodes correctly and if other programs do not know even to count nodes it cause me to have doubts if they have not other problems. I had with Deep Fritz a problem when I tried to analyze a position for more than 99 hours. I guess that the problem was with the interface and not with the engine but after more than 99 hours I could see no main line. Uri
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