Author: Andrew Williams
Date: 01:16:28 09/18/02
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On September 17, 2002 at 21:31:17, James Swafford wrote: Hi James, Here are some results for postmodernist: Position 1: =========== NODES: ab: 605505 q: 915527 tot: 1521032 probes: 1491339 hits: 315293 cutoffs: 210841 secondary: 27025 probes: 98% hits: 21% cutoffs: 66% secondary: 8% Position 2: =========== NODES: ab: 1760510 q: 766490 tot: 2527000 probes: 2472152 hits: 1502633 cutoffs: 1200327 secondary: 147757 probes: 97% hits: 60% cutoffs: 79% secondary: 9% Position 3: =========== NODES: ab: 508192 q: 1037811 tot: 1546003 probes: 1543924 hits: 265514 cutoffs: 163079 secondary: 20231 probes: 99% hits: 17% cutoffs: 61% secondary: 7% The percentages are (L to R): % of nodes for which PM probed the table (PM probes in qsearch too). % of probes for which PM finds a matching entry % of matching entries which cause a cutoff based on bounds in the entry % of matching entries where the bestMove in the entry causes a cutoff Andrew > >I'm skeptical about my hash efficiency - it seems to me I'm not >getting enough hits from my hash tables. > >I wonder if some of you would post some numbers for me to compare >by running the following 3 positions: > >r4k2/q4npp/P2P4/2p1R3/2N5/6PP/Q5K1/8 w - - bm Re7; id "ECM.1028"; >7k/p7/1R5K/6r1/6p1/6P1/8/8 w - - b6b7; >r1bq1rk1/pp2bp1p/2p2np1/3p2B1/3P4/2NQ2N1/PPP2PPP/4RRK1 w - - bm Rxe7; id >"ECM.1068"; > >The first and last are from GCP's ECM-GCP suite and the second is >from WAC. > >Anyway, here's what I'm getting (10 seconds per problem): > >Position 1: 3931063 nodes, 318411 interior nodes. > fail highs: 10866 (3%); fl: 9929 (3%); ex: 671 (0%) > hash mvs played: 10660 > >Position 2: 4944963 nodes, 3102047 interior nodes. > fh: 1531962 (49%); fl: 432594 (13%); ex: 2836 (0%) > hash mvs played: 602039 > >Position 3: 3847265 nodes, 222358 interior nodes. > fh: 3443 (1%); fl: 2926 (1%); ex: 151 (0%) > hash mvs played: 11931 > >The ratios change very little if I run the positions at 30 seconds. > >Thanks to anyone that takes the time... (which is hopefully a >positive number of people)... > >-- >James
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