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Subject: Re: Engine testing: Memory Speed vs NPS at 400 & 32mb hash settings

Author: Aaron Gordon

Date: 13:16:17 08/08/02

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On August 08, 2002 at 12:57:27, Peter Skinner wrote:
>This was a discussion with Crafty a long time ago with hash settings. It was
>easily explained.
>
>When the hash setting is lower the nps is of course higher. The more you
>increase the hash table settings in any program the nps will decrease but the
>depth will increase thus providing a better search due to storing more in the
>hash tables.
>
>While the knps is nice what is more important is depth. Without that there is
>nothing. You get outsearched and you lose.
>
>Don't ever set the hash tables to high though. This will induce hd swapping and
>will kill everything.

Indeed. This is why I am stressing people have high memory bandwidth so they
can have large hash tables w/o taking much of a performance hit.



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