Author: Reinhard Scharnagl
Date: 07:33:39 09/07/04
Go up one level in this thread
Hi Sune, >You used 512 MB hash? >Gosh, I only have 512 total in the machine. well, that saves some time during testing. But as we could see from our results, the mor RAM is not always helpful at low plys. >Well default is 50 MB hash as is also used in the latest public version. > ply -- seconds >> FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1 > (50 MB) (200 MB) > 05 -- 0.16 05 -- 0.19 > 06 -- 1.98 06 -- 2.08 > 07 -- 27.70 07 -- 24.86 > 08 -- 531.19 08 -- 389.23 >> FEN: r3k2r/p1ppqpb1/bn2pnp1/3PN3/1p2P3/2N2Q1p/PPPBBPPP/R3K2R w KQkq - 0 25 > 50 MB: 200 MB: > 04 -- 0.16 04 -- 0.19 > 05 -- 3.64 05 -- 3.80 > 06 -- 115.12 06 -- 108.92 Ok, here are some better matching values: FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1 Ply Nodes all (x) all (+) Seconds ------------------------------------------------------------ 01 20 0 0 0 02 400 0 0 0 03 8902 34 12 0 04 197281 1576 469 0 05 4865609 82719 27351 0.1 06 119060324 2812008 809099 1.5 07 3195901860 108329926 33103848 20.5 08 84998978956 3523740106 968981593 381.2 ------------------------------------------------------------ FEN: r3k2r/p1ppqpb1/bn2pnp1/3PN3/1p2P3/2N2Q1p/PPPBBPPP/R3K2R w KQkq - 0 25 Ply Nodes all (x) all (+) Seconds ------------------------------------------------------------ 01 48 8 0 0 02 2039 351 3 0 03 97862 17102 993 0 04 4085603 757163 25523 0.2 05 193690690 35043416 3309887 3.7 06 8031647685 1558445089 92238050 107.4 ------------------------------------------------------------ and: FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1 Ply Nodes all (x) all (+) Seconds ------------------------------------------------------------ 01 20 0 0 0 02 400 0 0 0 03 8902 34 12 0 04 197281 1576 469 0 05 4865609 82719 27351 0.1 06 119060324 2812008 809099 1.6 07 3195901860 108329926 33103848 20.1 08 84998978956 3523740106 968981593 301.5 ------------------------------------------------------------ FEN: r3k2r/p1ppqpb1/bn2pnp1/3PN3/1p2P3/2N2Q1p/PPPBBPPP/R3K2R w KQkq - 0 25 Ply Nodes all (x) all (+) Seconds ------------------------------------------------------------ 01 48 8 0 0 02 2039 351 3 0 03 97862 17102 993 0 04 4085603 757163 25523 0.2 05 193690690 35043416 3309887 3.8 06 8031647685 1558445089 92238050 97.6 ------------------------------------------------------------ >>because it would be very interesting for me to know the ply-timings, >>for to estimate and to compare the groth of dure from ply to ply, >>when using a transposition table. >The replacement scheme is not unimportant here either, the hash will saturate >badly when going deep. You obviously understand! The perft test here is not primarily targeting at records, but for to help to visualize the caching behaviour. >And of course the machines are not identical. Nevertheless your figures are very impressive! Regards, Reinhard.
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