Author: Robert Hyatt
Date: 13:06:47 03/13/03
Go up one level in this thread
On March 13, 2003 at 10:51:51, Peter Fendrich wrote: >On March 13, 2003 at 09:52:02, Robert Hyatt wrote: > >>On March 13, 2003 at 08:21:13, Peter Fendrich wrote: >> >>>On March 12, 2003 at 22:29:49, Robert Hyatt wrote: >>> >>>>On March 12, 2003 at 13:44:46, Bernardo Wesler wrote: >>>> >>>>>Although I am not an expert in computing, I know that the larger amount of hash >>>>>tables you set, the performance of the processor goes down. >>>> >>> >>>- snip - >>>>I added a new "adaptive hash size" in Crafty so that you simply give it the >>>>estimated nodes per second, and the level command to set the time per move, and >>>>it will set the hash size pretty optimally. >>> >>>How do you know the available memory size? >>> >>>/Peter >> >> >>The user specifies the min and max hash sizes: >> >>IE I use this: >> >>adaptive 2.4M 12M 768M 12M 96M >> >>That says set hash to 12M-768M depending on the time control. 12M-96M is the >>range for pawn hash. > >I have a similar idea to let the operator specify how much RAM can be afforded >in total and use that to optimise the sizes of my 4 hash tables plus the EGTB >buffer. >Why have a minimal size - does it really have any practical importance? Good question. I doubt it makes much sense to go too small in games like 1 0 (bullet). > >/Peter
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