Author: Slater Wold
Date: 05:21:05 09/13/02
Go up one level in this thread
On September 13, 2002 at 07:21:34, Uri Blass wrote: >On September 12, 2002 at 21:47:50, Slater Wold wrote: > > > 33-> 1:54 -4.35 1. ... Ke6 2. Kg4 Kf6 3. Kf3 Kf5 4. >> g4+ Ke6 5. Ke3 Kd6 6. h6 Kc6 7. Kd3 >> Kb5 8. Kc3 Ka4 9. Kd2 Kb3 10. Kd3 Kb4 >> 11. Kd2 Kc4 12. Ke3 Kc3 13. Kf2 Kxd4 >> 14. Kf3 Kd3 15. Kf2 Ke4 16. Ke2 Kf4 >> 17. Kd3 Kxg4 18. Kd4 >> 34 2:56 ++ 1. ... Ke6!! >> time=3:00 cpu=146% mat=0 n=39656530 fh=90% nps=219k >> ext-> chk=3683159 cap=29397 pp=237076 1rep=44187 mate=895 >> predicted=0 nodes=39656530 evals=7250326 >> endgame tablebase-> probes done=399864 successful=115699 >> hashing-> trans/ref=99% pawn=99% used=45% >> SMP-> split=11479 stop=453 data=14/32 cpu=4:25 elap=3:00 > >For comparison without tablebases based on this post: > > time=3:00 cpu=395% mat=0 n=317723157 fh=90% nps=1760k > ext-> chk=38571273 cap=300160 pp=1657789 1rep=606903 mate=15767 > predicted=0 nodes=317723157 evals=45733071 > endgame tablebase-> probes done=0 successful=0 > hashing-> trans/ref=93% pawn=99% used=98% > SMP-> split=27177 stop=1467 data=15/32 cpu=11:53 elap=3: > >Some question >1)What is the reason for cpu=395% withouit tablebases and cpu=146% with >tablebases? It's a bug in Crafty. It doesn't know how to properly count CPU time in Windows. >2)Do tablebases do crafty so slow in nodes per second(219 with against 1760 >without) or part of the difference is because of different reasons(for example >another application that ran at the same time) It's the TBs. >3)What is succesful probe? A TB position hit. >I think that every probe should to be succesful if the machine has all the 5 >piece tablebases. >Probes should be done only if there are at most 5 pieces. It searches TB on the PV. Perhaps there are no 5 piece in the PV given, but there are plenty in the positions searched that are not displayed. >Uri
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