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Subject: Re: Deep Junior 8 / Junior 8 CPU Affinity Bug!

Author: Amir Ban

Date: 15:32:43 06/04/03

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On June 04, 2003 at 14:54:30, Anson T J wrote:

>Has anyone noticed if you do engine matches with Junior 8 / Deep Junior 8, ZX,
>YY (any of them). If you set 1 thread per engine (on a dual machine), they share
>1 cpu with a net cpu usage of 50% !!
>
>Deep Fritz 7, Shredder 7 / 7.04 and all other SMP engines I know of don't have
>this problem.
>
>I guess the Junior 8 engines fix the affinity of the single cpu setup meaning in
>an engine match or tournament they share the same cpu instead of using one each.
>

Didn't think of this, damn.


>Any fixes known?
>

The problem should come up whenever running one DJ version against another with
no. of threads set to less than no. of processors. I can't think of any
workaround. I should get rid of processor affinity in that case.

Amir




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