Author: David Rasmussen
Date: 13:33:52 01/16/03
Go up one level in this thread
On January 16, 2003 at 15:54:17, Dann Corbit wrote: >> >>Beowulf output: >>Position 1 - White to play >>-------------------------- >>ID = >>FEN = 8/4n3/1k6/1p4p1/1P4P1/1K6/3B4/8 w - - >> >>. . . . . . . . >>. . . . n . . . >>. k . . . . . . >>. p . . . . p . >>. P . . . . P . >>. K . . . . . . >>. . . B . . . . >>. . . . . . . . >> >>Current Position = 0.52 >>Number of Possible Moves = 11 >> >> 11 236 75 143184 Bxg5 Ng6 Kc3 Ne5 Be3+ Kc6 g5 Kd7 Kd4 Ke6 g6 >> 12 231 178 352812 Bxg5 Ng6 Kc3 Ne5 Be3+ Kc6 g5 Kd5 Bd4 Nf3 g6 Kd6 >> 13 219 266 528614 Bxg5 Ng6 Kc3 Ne5 Bd8+ Kc6 g5 Kd7 Bf6 Ng4 Kd3 Ke6 >>Bd8 Kf5 >> 14 213 606 1216211 Bxg5 Nd5 Bd2 Kc6 g5 Ne7 Kc3 Kd5 Kd3 Ke5 Be1 >> 15 213 1009 1942140 Bxg5 Nd5 Bd2 Kc6 g5 Ne7 Bc3 Kd5 Bf6 Ng6 Kc2 Ke4 >>Bd8 Ke5 Bf6+ Ke4 &rep. >> 16 214 1759 3325204 Bxg5 Nd5 Bc1 Kc6 Kc2 Nxb4+ Kb3 Nd3 Bd2 Kd5 Kc3 >>Ne5 Kb3 >> 17 214 3000 5733741 Bxg5 Nd5 Bc1 Kc6 g5 Ne7 Kc2 Kd5 Kd3 Ke5 Bd2 Nd5 >>Be1 Ne7 >> >>Search Time : 30.00 Seconds >>Total Nodes Searched : 5733741 (52.3% Qui) >>Total Nodes Evaluated : 2998609 >>Cuts : Delta 1508 : SEE 18270 : Mate 0 >> : Razor 202628 : Eval 1107291 >>Extensions : Check 151560 : OneRep 45 : CMThreat 8317 >> : Pawn 42183 : Recap 2342 : RevCheck 4278 >>Hash Stores (Size) : 582291 (699037) >>Hash Probes (Hits) : 5384740 (3263270) >>EGTB Probes (Hits) : 46423 (46423) >>Move Ordering : 81.9% >>Best Move = Bxg5 >>Move Score = 214 >>--Answer: Bxg5 ** Correct ** >>Time To Solution = 0.00 sec >>Correct So Far : 1/1 >> >> >>Test Completed. >>Results; >>Correct : 1/1 >>Average Time To Solution = 0.00 sec >>[1]W > > >Same thing with EGTB turned off: > >Position 1 - White to play >-------------------------- >ID = >FEN = 8/4n3/1k6/1p4p1/1P4P1/1K6/3B4/8 w - - > >. . . . . . . . >. . . . n . . . >. k . . . . . . >. p . . . . p . >. P . . . . P . >. K . . . . . . >. . . B . . . . >. . . . . . . . > >Current Position = 0.52 >Number of Possible Moves = 11 > > 11 236 68 145925 Bxg5 Ng6 Kc3 Ne5 Be3+ Kc6 g5 Kd7 Kd4 Ke6 g6 > 12 219 106 229472 Bxg5 Ng6 Kc3 Ne5 Bd8+ Kc6 g5 Kd7 Bf6 Ke6 Bd8 Ng6 >Kd4 > 13 218 178 396062 Bxg5 Ng6 Kc3 Ne5 Bd8+ Kc6 g5 Kd7 Bb6 Ke6 Kd4 Nc4 >Bd8 Nd6 > 14 211 336 771335 Bxg5 Ng6 Kc3 Ne5 Bd8+ Kc6 g5 Kd5 Bf6 Ng6 Kd3 >Ne5+ Kc2 Ke6 Kd2 Nf7 Ke3 > 15 211 621 1421370 Bxg5 Ng6 Kc3 Ne5 Bd8+ Kc6 g5 Kd5 Bf6 Ng6 Kd3 >Ne5+ Kc2 Ke6 Kd2 Nf7 Ke3 > 16 207 1947 4503141 Bxg5 Nd5 Bd2 Kc6 g5 Ne7 Kc2 Kd5 Kc3 Ke5 Kb3 Nc6 >Be3 Kf5 Bf4 > 17 207 3000 6998206 Bxg5 Nd5 Bd2 Kc6 g5 Kd7 Kc2 Ke6 Kd3 Kf5 Kd4 Nxb4 >Kc5 Na2 Kxb5 Nc3+ Kc4 Ne4 > >Search Time : 30.00 Seconds >Total Nodes Searched : 6998206 (53.9% Qui) >Total Nodes Evaluated : 3765466 >Cuts : Delta 1878 : SEE 24636 : Mate 0 > : Razor 292648 : Eval 1481897 >Extensions : Check 181048 : OneRep 96 : CMThreat 0 > : Pawn 71075 : Recap 3354 : RevCheck 7484 >Hash Stores (Size) : 742253 (699037) >Hash Probes (Hits) : 6474752 (3664648) >EGTB Probes (Hits) : 0 (0) >Move Ordering : 81.9% >Best Move = Bxg5 >Move Score = 207 >--Answer: Bxg5 ** Correct ** >Time To Solution = 0.00 sec >Correct So Far : 1/1 > > >Test Completed. >Results; >Correct : 1/1 >Average Time To Solution = 0.00 sec This seems to indicate that 1. Beowulf probes actually more in the position. ~45000 probes vs. ~25000 probes. 2. Beowulf loses a little speed when using EGTBs, but not nearly enough as Chezzz. Beowulf goes from 700M/30s to 600M/30s. Chezzz goes from 700knps to 100 knps. What hardware is Beowulf running on here, and how much hash, egtb cache etc. ? /David
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