[Dune-devel] Semantics of {ghost,overlap}Size

[Oliver Sander]

Hi Martin,

> 
> Anyway, in my opionion (as stated on the wish list for the developer meeting) the parallel part of the dune-grid interface should be revised in the near future. I think there are several points worth
> discussion. I was already thinking about a "small" meeting of those directly involved in the parallel interface (both on the user's and on the developer's side). What do the others feel?

I think such a small meeting is the only possible way to do such a revision.
Cheers,
Oliver

> 
> Best,
> 
> Martin
> 
> On 11/07/2013 11:39 AM, Andreas Dedner wrote:
>> Hi.
>> I've wondered about that as well and am thinking that the method really only
>> makes sense for codim 0 (where it the semantics seems clear enough).
>>
>> In DUNE everything boils down to codim 0 anyway (i.e. what leaf entities
>> are for example). So if I have an overlap of 2 codim 0 entities then
>> I would expect that the corresponding entities of higher codimension are
>> there
>> as well....
>>
>> Does anybody use that method for c>0?
>>
>> Best
>> Andreas
>>
>> PS: should these method be deprecated on the grid class?
>>
>> On 07/11/13 10:33, Markus Blatt wrote:
>>> Hi,
>>>
>>> I recently looked at the documentation off these methodsbut this did
>>> not help me understand what they are doing. It reads "Return size of
>>> ghost region for a given codim on the leaf grid" but it is not clear
>>> to me what this size is.
>>>
>>> In the documentation of yaspgrid it says that size is the distance in
>>> graph, which is not really clearer. I assume that means the smallest
>>> path between any two entities on different borders of that
>>> region. Which still leaves the question open what the graph
>>> of an enitity set of a given codim is. The vertices are of course the
>>> codim entities. Seems like the edges would be the codim 1 entities for
>>> elements and for all other entities with codim c the ones with codim c+1.
>>>
>>> Is there a precise definition somewhere?
>>>
>>> Markus
>>
>>
>> _______________________________________________
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>> Dune-devel at dune-project.org
>> http://lists.dune-project.org/mailman/listinfo/dune-devel
>>
> 


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