[petsc-users] [petsc-maint] virtual nodes at processes boundary

[Matthew Knepley]

I cannot understand your description. Maybe you can draw a picture in 1D.

    Matt

On Fri, May 6, 2016 at 5:08 AM, praveen kumar <praveenpetsc at gmail.com>
wrote:

> Hi,
>
> I am trying to implement Petsc for DD in a serial fortran FVM code.  I
> want to use solver from serial code itself. Solver consists of gauss seidel
> + TDMA. BCs are given along with the solver at boundary virtual nodes. For
> Ex: CALL TDMA(0,nx+1), where BCs are given at 0 and nx+1 which are virtual
> nodes (which don't take part in computation). I partitioned the domain
> using DMDACreate and got the ghost nodes information using DMDAGetcorners.
> But how to create the virtual nodes at the processes boundary where BCs are
> to be given. Please suggest all the possibilities to fix this other than
> using PETSc for solver parallelization.
>
> Thanks,
> Praveen
>
>


-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20160506/b92f42b1/attachment.html>