about Unstructured Meshes

[Matthew Knepley]

On 2/23/07, Niriedith Karina <niriedith at gmail.com> wrote:
> oka oka...
> thaks
> but... i don't understand very well....
> what can i do with petsc and the unstructured mesh support? because you say
> that petsc does not make meshes so what it's new about the meshes in petsc ?
> i'm sorry but i'm very new in this area...

Then I think you should not try out the PETSc stuff yet. I would just get the
appropriate mesh generator and go from there. The extra support is for
construction of functions and operators over a mesh, but you can do that
yourself after generating them.

   Matt

> thaks again...
>
>
> On 2/23/07, Matthew Knepley <knepley at gmail.com > wrote:
> > On 2/23/07, Niriedith Karina < niriedith at gmail.com> wrote:
> > > Hi !!
> > >
> > > I'm new here...and i'm new a petsc user.. :P
> > > I want to know if petsc has support for meshes...
> > > I was reading about that and i need create a mesh but all the software
> that
> > > i see are comercial ...so I use petsc for linear solver and matrices so
> if
> > > petsc create meshes it would be but easy for me  .. so..
> > > help me ! :D
> >
> > 1) PETSc does not make meshes, but there are good free meshing packages,
> >     Triangle in 2D and TetGen in 3D.
> >
> > 2) The unstructured mesh support in PETSc is very new, and at this point
> is
> >     probably only usable by expert programmers. If you feel up to it,
> > take a look
> >     at the examples in src/dm/mesh/examples/tutorials. Otherwise, you can
> use
> >     the packages above and manage the construction of Mats and Vecs
> yourself.
> >
> >   Thanks,
> >
> >     Matt
> >
> > > Thanks anyway...
> >
> >
>
>


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