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Subject: Re: Crafty MPC ( Is it Hyper Threading?)

Author: Sune Fischer

Date: 16:02:00 09/13/03

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On September 13, 2003 at 18:50:31, Jeremiah Penery wrote:

>Can't you just calculate the speedup (in time to solution, or whatever measure
>you want) and figure effective NPS from that?

Well, you would need to run a serial search to compare with, so you won't get
on-the-fly nps.

Still, you'd have to be careful in how you compute it if you want to compare
with a serial search.
You might be tempted to use the ratio of times to solution, but this wouldn't be
the nps I'm interested in, move ordering plays a role here.
Ie. on a dual you could theoreticly see greater than two speedups, but you
should _never_ see greater than two cpu-loads / nps, simply theoreticly
impossible.

So depends what kind of "efficiency" you want, and I want the effective nps. :)

-S.



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