[Paraview-developers] how does a reader say it cannot produce ghost cells?

[Favre Jean]

developers,

I have a parallel reader producing several unstructured grid objects which are quite heavy. My reader does not know how to generate ghost cells (the underlying legacy format makes it too complicated and very I/O inefficient). I use D3 downstream and whenever ghost-cells are required, the request is propagated all the way upstream, forcing the re-execution of my reader. Wasted effort since I cannot produce the ghosts.

Is there anyway my reader can advertize the fact that it cannot generate ghost cells and that it should by-pass any new request for execution.

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Jean