Re: [Libmesh-users] using PCGAMG

[Ataollah M. <am...@ti...>]

Cody,

On May 9, 2013, at 9:29 AM, Cody Permann <cod...@gm...> wrote:

> 
> 
> 
> On Thu, May 9, 2013 at 8:07 AM, Ataollah Mesgarnejad <am...@ti...> wrote:
> Dear all,
> 
> I was wondering if anyone has any experience using gamg with libMesh (I'm particularly interested in elasticity)?
> 
> 
> It certainly works, however in my very limited experiecne, it's slightly more tricky to use than Hypre as we've found that it requires a few more options.  Gamg is very flexible and part of PETSc so it ties in nicely.
>  

That's wonderful. Do I need to add anything in the code itself like block size or ..? Or do you mean the command line options for gamg?

> My main question would be if the geometric part of gamg would work with the underlying mesh structure in libMesh?
> 
> I'm not sure if I'm missing something with this question.  I don't see why this preconditioner would care about the mesh structure, it's abstracted well above that level.  From libMesh's perspective, it's just another preconditioner.

OK. I'm not very familiar with low level structure in libMesh so I wasn't sure.

Thanks,
Ata

> 
> Cody
>  
> 
> I would appreciate any comments/recommendations,
> Ata
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