Author: Robert Hyatt
Date: 20:03:13 09/17/02
Go up one level in this thread
On September 17, 2002 at 21:31:17, James Swafford wrote:
>
>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
Here is mine... (explanation to follow)
hashing-> 29%(raw) 24%(depth) 99%(sat) 99%(pawn)
hashing-> 0%(exact) 16%(lower) 1%(upper)
hashing-> 64%(raw) 59%(depth) 99%(sat) 99%(pawn)
hashing-> 0%(exact) 55%(lower) 2%(upper)
hashing-> 24%(raw) 18%(depth) 98%(sat) 98%(pawn)
hashing-> 0%(exact) 16%(lower) 0%(upper)
The numbers:
"raw" is the raw hits. This means that the signatures match, and nothing
more is considered.
"depth" means the signature matched, the depth (draft) was sufficient to use
whatever information was found.
"sat" is saturation or percent of used entries in the table.
"pawn" is pawn hits (matches and all matches are useful).
Exact lower and upper should be obvious as to their meanings...
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