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Subject: Re: Dual kN/s v single processor kN/s

Author: Robert Hyatt

Date: 12:19:54 04/23/01

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On April 23, 2001 at 14:30:59, Jonas Cohonas wrote:

>I have read a lot of posts here about the speedup on dual machines being about
>1.4-1.8 depending on the program, hardware etc... but can anyone with dual
>systems post their kN/s results v results from single processor results, with
>Deep Fritz, Deep Junior, Deep shredder etc?
>
>Regards
>Jonas


NPS is the _wrong_ thing to measure.  On a dual it should be close to 2x
what it is on an equivalent single.  Unfortunately the dual will search
_more_ nodes for a given position (search overhead) that causes the less-
than-perfect speedup.  1.7x is a good number...



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