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Subject: Re: Test position ==> Aristarch 4.4 vs Tao 5.4 [from WinBoard Forum]

Author: Bas Hamstra

Date: 13:52:40 08/07/02

Go up one level in this thread


On August 07, 2002 at 16:41:33, Gian-Carlo Pascutto wrote:

>On August 07, 2002 at 16:36:19, Bas Hamstra wrote:
>
>>GCP, What is deep Sjeng exactly? A multi CPU version of Sjeng?
>
>Yes.
>
>It also has other improvements in the search. (not done much
>work on eval yet).
>
>I'm currently getting a speedup of 1.2 on 4 cpus, so I'm afraid
>there is still much work to do.
>
>--
>GCP

Vincent claims you can get 40% extra from 2 CPU's by just letting 2 processes
search the same position and just and only share the hashtable. Of course you
need to lock the shared hash, else "race conditions".

Ciao,
Bas.








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