[petsc-users] DMPlex shared node indexing

[袁煕]

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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