PETSc + HYPRE

[Lisandro Dalcin]

OK,

You said you are trying to solve NS eqs. Are you using a pressure
projection-like method? In that case, is the matrix of your pressure
problem much different than the Laplacian one? How do you handle the
pressure 'rigid-body' mode?

On 4/16/08, Márcio Ricardo Pivello <pivello at gmail.com> wrote:
> Hi, Lisandro. I must apologize for not answering. I read your email and
> changed my code, but then I went through a different path. I'm trying to
> call the preconditioner from the command line, without any mention to it in
> the source code. It should take a couple of hours to get some results and
> then, if it doesn't work, I'll change the code.
>
>
> Thank you very much.
>
>
> Márcio Ricardo
>
>
>
>
>
>
>
> On Tue, Apr 15, 2008 at 8:43 PM, Lisandro Dalcin <dalcinl at gmail.com> wrote:
>
> > Sorry for my insistence, but... Did you see my previous mail? The code
> > you wrote is not OK. You have to first create the KSP, next extract
> > the PC with KSPGetPC, and then configure the PC to use HYPRE+BoomerAMG
> >
> > To be sure you are actually being using hypre, add -ksp_view to command
> line.
> >
> >
> >
> >
> >
> > On 4/15/08, Márcio Ricardo Pivello <pivello at gmail.com> wrote:
> > > Hy, Matthew, thanks for your help.
> > >
> > > Firstly, I'm solving a 3D Incompressible Navier Stokes solver based on
> FEM,
> > > with fluid-structure interaction. In this case, I'm simulating the blood
> > > flow inside an aneurysm in an abdominal aorta artery.
> > >  By not working I mean the error does not decrease with time. Our team
> is
> > > just starting using HYPRE, in fact this is the very first case we run
> with
> > > it.
> > >
> > >
> > > Again, thanks for your help.
> > >
> > >
> > > Márcio Ricardo.
> > >
> > >
> > >
> >
> >
> > --
> >
> >
> >
> > Lisandro Dalcín
> > ---------------
> > Centro Internacional de Métodos Computacionales en Ingeniería (CIMEC)
> > Instituto de Desarrollo Tecnológico para la Industria Química (INTEC)
> > Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
> > PTLC - Güemes 3450, (3000) Santa Fe, Argentina
> > Tel/Fax: +54-(0)342-451.1594
> >
> >
>
>


-- 
Lisandro Dalcín
---------------
Centro Internacional de Métodos Computacionales en Ingeniería (CIMEC)
Instituto de Desarrollo Tecnológico para la Industria Química (INTEC)
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
PTLC - Güemes 3450, (3000) Santa Fe, Argentina
Tel/Fax: +54-(0)342-451.1594