Re: [eclipse-clp-users] Multicore/CPU systems and Eclipse CLP

From: Wit Jakuczun <wit.jakuczun_at_...6...>
Date: Tue, 22 Jun 2010 20:04:18 +0200
You just need to do the same initialization for each prolog engine. This is
what I meant by copying. I am not sure if there is a simple way to copy
prolog's database.

Best regards
-- 
[ Wit Jakuczun  http://www.linkedin.com/in/jakuczunwit  ]


2010/6/22 Christian Wirth <tyrion@...215...>

> to clarify it a bit:
> I compile the prolog source code first, then i load another file via the
> given prolog program and this triggers some complex calculations (should not
> be done multiple times) to create new rules. So i would need to copy all
> rules after those calculations.
>
> Am 22.06.2010 18:41, schrieb Christian Wirth:
>
> Thx,
>
> i will need to try it out, but seems not too complicated .. except how do i
> copy the ruleset ? The ruleset is compiled from a file and some existing
> rules, so i don't know every predicate. Is there a way to just copy all ?
>
> cheers Christian
>
> Am 22.06.2010 18:28, schrieb Wit Jakuczun:
>
> Dear Christian,
>    we have done something similar on 32 processors. You must use
> RemoteEclipse or OutOfProcessEclipse and not EmbeddedEclipse.. Check this
> part of documentation:
> http://www.eclipse-clp.org/doc/embedding/embroot048.html for more details.
> All you have to do is to send ruleset to each prolog engine separately.
> After this you can call them asynchronously.
>
> Best regards
> --
> [ Wit Jakuczun  http://www.linkedin.com/in/jakuczunwit  ]
>
>
> 2010/6/22 Christian Wirth <tyrion@...215...>
>
>> My program creates a ruleset on startup .. ofc that can only be done
>> singlecore, but after that i repeatetly call a predicate that does not
>> modify the ruleset and it is not dependant on the parallel calls. So i just
>> want to run every predicate call on a new core, without any interaction with
>> the other calls.
>> But how can i setup the parallel solving ?
>>
>> Am 22.06.2010 18:12, schrieb Wit Jakuczun:
>>
>> 2010/6/22 Christian Wirth <tyrion@...215...>
>>
>>> Hi,
>>>
>>> i'm running eclipse CLP on Dualcore and a Quad CPU machine, and would
>>> like to use those additional cores/cpus. I'm running eclipse from Java
>>> and it's already setup to create multiple parallel threads, but eclipse
>>> seems to use only one core anyway ?
>>> What do i need to do ?
>>>
>> I what way would you like to use more than one cpu? If you are asking
>> whether ECLiPSe can solve clp problems using many cpus then the answer is no
>> (according to my knowledge). But you could try to do it by yourself by
>> decomposing your problem and solving each subproblem with separate eclipse
>> solver.
>>
>> Best regards
>> --
>> [ Wit Jakuczun  http://www.linkedin.com/in/jakuczunwit  ]
>>
>>
>>
>>
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>
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Received on Tue Jun 22 2010 - 18:04:26 CEST

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