[petsc-dev] Need mechanism to set LocalToGlobal mapping in a DMShell

[Peter Brune]

Jed, I disagree; It's quite natural to want custom bindings for these
things if you want some new mesh type to have local-to-global and
global-to-local operations over that mesh.  Having it abstracted out to the
matrix or vector is constraining.

They should totally be in there and should be implementation-level in
DMShell.

- Peter


On Thu, Feb 21, 2013 at 12:42 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote:

> It would be natural to have a matching interface, but why do you need it?
> You're in charge of making the matrices and vectors so you can give them
> local-to-global mappings. The only solver that calls
> DMGetLocalToGlobalMapping is PCEXOTIC, which only works with DMDA anyway.
>
>
> On Thu, Feb 21, 2013 at 12:35 PM, Richard Tran Mills <rtm at eecs.utk.edu>wrote:
>
>> Hi Folks,
>>
>> I want to set a LocalToGlobal mapping in a DMShell object.  Should we add
>> a DMShell routine to do this, or just add a DMSetLocalToGlobalMapping()
>> routine?
>>
>> Thanks,
>> Richard
>>
>> --
>> Richard Tran Mills, Ph.D.
>> Computational Earth Scientist      | Joint Assistant Professor
>> Hydrogeochemical Dynamics Team     | EECS and Earth & Planetary Sciences
>> Oak Ridge National Laboratory      | University of Tennessee, Knoxville
>> E-mail: rmills at ornl.gov  V: 865-241-3198 http://climate.ornl.gov/~**
>> rmills <http://climate.ornl.gov/~rmills>
>>
>>
>
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