On 10/21/20 7:46 PM, Doug Shi-Dong wrote:
Thanks, yes, that should work well for 2D. I actually just thought of a corner
case (pun intended) in 3D. It is possible for a cell's vertex to be on a
boundary, without any of its neighbour actually have a boundary face.
Yes, precisely: None of the face neighbors have to be on the boundary. But at
least one of the vertex neighbors have to be -- which is why the ghost layer
consists of all of the vertex neighbors of locally owned cells.
You can create the same situation in 2d, by the way: Start with a single
vertex and put 5 or more quadrilateral cells around it. Then put another layer
of cells around those. Then remove one of the cells that are adjacent to the
original vertex and look at the cell opposite from it.
Any advice on how to approach this since the current processor would not find
it within its ghost cells?
Yes, it will -- see above.
W.
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