VecGetLocalSize()

[Barry Smith]

     There isn't a routine for accessing the local to global mapping.  
But you can access it as
Vec x;
x->mapping

   Barry

On Jan 19, 2009, at 4:18 AM, Tim Kroeger wrote:

> Dear Matt,
>
> On Fri, 16 Jan 2009, Matthew Knepley wrote:
>
>> On Fri, Jan 16, 2009 at 6:58 AM, Tim Kroeger <
>> tim.kroeger at cevis.uni-bremen.de> wrote:
>>
>>> If I create a vector using VecCreateGhost() and then query the  
>>> local size
>>> using VerGetLocalSize(), will the resulting number then include  
>>> the number
>>> of ghost values or not?  In either case, how can I ask a vector  
>>> about the
>>> number of ghost values that are stored locally?
>>
>> No, it will have the local size without ghosts. You can get the  
>> number of
>> ghosts from the size of the local form VecGhostGetLocalForm()
>> or from the size of the LocalToGlobalMapping.
>
> Thank you very much.  My next question: How do I obtain the vector's  
> LocalToGlobalMapping?  I thought there would be a function like  
> VecGhostGetLocalToGlobalMapping(), but that doesn't exist.  Can you  
> help me?
>
> Best Regards,
>
> Tim
>
> -- 
> Dr. Tim Kroeger
> tim.kroeger at mevis.fraunhofer.de            Phone +49-421-218-7710
> tim.kroeger at cevis.uni-bremen.de            Fax   +49-421-218-4236
>
> Fraunhofer MEVIS, Institute for Medical Image Computing
> Universitaetsallee 29, 28359 Bremen, Germany
>