[petsc-users] A question about DMPlexDistribute

[Julian Andrej]

Hi,

take a look at slide 10 of [1], there is visually explained what the
overlap between partitions is.

[1] https://www.archer.ac.uk/training/virtual/files/2015/06-PETSc/slides.pdf

On Thu, Aug 11, 2016 at 8:48 AM, leejearl <leejearl at 126.com> wrote:

> Hi, all:
>     I want to use PETSc to build my FVM code. Now, I have a question about
> the function  DMPlexDistribute(DM dm, PetscInt overlap, PetscSF *sf, DM
> *dmOverlap) .
>
>     In the example "/petsc-3.7.2/src/ts/examples/tutorials/ex11.c". When
> I set the overlap
> as 0 or 1, it works well. But, if I set the overlap as 2, it suffers a
> problem.
>     I am confused about the value of overlap. Can it be set as 2? What is
> the meaning of
> the parameter overlap?
>     Any helps are appreciated!
>
> leejearl
>
>
>
>
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