Ghost Zone Handling
I am experiencing multiple issues with ghost zone processing running in situ w/ catalyst. We are doing zero copy transfer from an AMR simulation that has 4 ghost zones around each block.
When I am trying to set up the catalyst script I save a dataset using the vth writer. The vth reader attempts to re-generate the ghost zones based on the number of levels slider in its PV UI. It correctly generates the mask for nested blocks. However it doesn't re-generate the 4 ghost zones. This leads to rendering data in the ghost zones.
The array range calculations seem to be including values in the ghost zones. I think that the range calculations are made inside vtkDataArray and hence don't have access to ghost zones?
I have not had time to work on this so I wanted to document some of the issues.