RAM

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Zlatin
Posts: 7
Joined: Wed Dec 07, 2011 7:38 pm

RAM

Post by Zlatin » Fri Aug 31, 2012 7:24 pm

Hello ,

I want to ask you how the amount of RAM influence of work of engine? And what is enough Hashtable size for Houdini and Rybka?

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Dan Honeycutt
Posts: 5189
Joined: Mon Feb 27, 2006 3:31 pm
Location: Atlanta, Georgia

Re: RAM

Post by Dan Honeycutt » Fri Aug 31, 2012 10:11 pm

Zlatin wrote:Hello ,

I want to ask you how the amount of RAM influence of work of engine? And what is enough Hashtable size for Houdini and Rybka?
Amount of ram needed depends on the time control. 4 mb is about the starvation level - the engine would probably do about as well with no hashing. 64 mb to 128 mb is a good amount for normal time controls. You can't specify too much (unless you exceed your physical memory) but as you get up toward a gig diminishing returns get pretty substantial.

Allocate your hash as a power of two like my numbers above. A lot of engines require that so even if you said 150 mb the engine would likely use only 128 mb.

Best
Dan H.

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velmarin
Posts: 1600
Joined: Mon Feb 21, 2011 8:48 am

Re: RAM

Post by velmarin » Fri Aug 31, 2012 10:18 pm

You can use this little program the author Hall2011 ,

It's in Spanish, but it is easy to use.

http://upd.webhispana.net/download.php?id=HashTable

[img]http://img835.imageshack.us/img835 ... png[/img]

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