[petsc-users] DMPlex shared node indexing

[Mark Adams]

First, ghost vertices only show up in "local" (vs "global") vectors and the
ghost values are ordered after the locally owned ones.
Others might have more to add.
Mark


On Fri, Nov 26, 2021 at 12:49 AM 袁煕 <yuanxi at advancesoft.jp> wrote:

> Dear PETSc-team,
>
> When the mesh is distributed, the vertices are renumbered and some
> vertices are shared by neighboring CPUs. My question is:
>
> 1. How to check which vertice is a ghost one?
> 2. Are those ghost vertices always at the end of vertices list? If not
> 3. Are there simple ways to let those ghost vertices come after owned ones?
>
> Many thanks
>
> Yuan
>
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