Re: [ompl-users] OMPL and multi Core

[daniel S. <tya...@ya...>]

Hello Ioan,

first of all thanks you for your fast answer. Parallel computation is indeed a "nice to have". 
I supposed OMPL uses some sort of CSpace subdivision(e.g  proposed in : Sam Ade Jacobs et. al., A Scalable Method for Parallelizing
Sampling-Based Motion Planning Algorithms ) and therefore my question.

In my case I want to compare performances and needed only the information whether the PRM implemented in OMPL uses multiple cores or not.


Greetings from Germany
Daniel


________________________________
 Von: Ioan Sucan <is...@gm...>
An: daniel Schneider <tya...@ya...> 
CC: "omp...@li..." <omp...@li...> 
Gesendet: 12:45 Freitag, 31.Mai 2013
Betreff: Re: [ompl-users] OMPL and multi Core
 


Hello Daniel,

One of the design principles for OMPL was to support parallel computation. We do not have explicit tutorials on this, but perhaps we should have one.


In short, all functions that are const are thread safe. There are some simple algorithms that do parallel computation: pRRT and pSBL. You can look at those to see how to implement a parallelized algorithm in OMPL. Each of these two algorithms offers the ability to set the number of cores, but they are not terribly efficient.



Ioan


On Fri, May 31, 2013 at 10:57 AM, daniel Schneider <tya...@ya...> wrote:

Dear OMPL Users,
>
>
>I'm new to OMPL  and want to us it for reasearch in MP algorithms. Is there any Information abount the usage of multiple cores? I was not able to find a hind or demo. Is OMPL using multicore as default? Can I set the amount of core?
>
>
>If I missed the Info in the demos and tutorials I'm sorry.
>
>
>Would really appreciate any help , hints or experience.
>
>
>Greetings Daniel
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