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Subject: Re: positions to search deep for hours at 500 cpu's

Author: Mikael Bäckman

Date: 14:48:46 09/19/03

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On September 19, 2003 at 15:00:55, Vincent Diepeveen wrote:

>On September 19, 2003 at 11:48:09, Mikael Bäckman wrote:
>
>>On September 19, 2003 at 11:14:29, Vincent Diepeveen wrote:
>>
>>>Hello,
>>>
>>>I'm looking for positions to search very deep with a cpu or 500 which are
>>>interesting to search deep. Seemingly a whole machine must get reserved for DIEP
>>>world champs 2003. The NWO/NCF perhaps needs to pay for the cpu hours also
>>>during the night says SARA (there is 7 organisations involved and i have written
>>>at least 1 page for each processor to get it so i won't even start quoting all
>>>the organisations involved).
>>>
>>>Most jobs run like 2 weeks or so at say for example 32 processors, so all those
>>>jobs cannot get started trivially in the night.
>>>
>>>Anyway more negotiations will be there, because the world champs like this will
>>>cost 80000 cpu hours.
>>>
>>>This is all internal talks. In case any of such scenario happens or even between
>>>rounds when diep finishes sooner its games, there sometimes is a few hours left
>>>to run diep at 500 cpu's at for example 1 position each run.
>>>
>>>that's 250Ghz with around 200GB hashtables in total.
>>>
>>>So this allows some massive deep calculations. I'm looking for cool positions to
>>>try.
>>>
>>>Please don't mention the openings position, i'm already using that now and it
>>>isn't very interesting at all to search that one deep.
>>
>>How deep have you searched the opening position and what is the PV you get?
>
>You can search the opening very deep if you want to. I have had diep versions in
>the past where i have put a big bonus for center pawns and a king being safe
>behind a shelter. So it wants to castle badly then and put pawns badly in
>center.

Yes, I know. :)  I was merely interested in what the 'normal' 500 cpu version
thinks about the position.

/Mikael


>
>It gets depths like 22 ply easily then.
>
>So openings position is not so interesting simply. Big bonuses guiding the
>development in a clear way are more important than the number of CPU's there in
>itself is.
>
>But still depths are big yes :)
>
>>
>>
>>
>>>feel free to email to me about this: diep@xs4all.nl
>>>
>>>Best regards,
>>>Vincent



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