Author: Peter Fendrich
Date: 07:51:51 03/13/03
Go up one level in this thread
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? /Peter
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