[ET Trac] [Einstein Toolkit] #1238: implement buffer mask in CarpetEvolutionMask

[Einstein Toolkit]

#1238: implement buffer mask in CarpetEvolutionMask
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  Reporter:  rhaas        |       Owner:  eschnett           
      Type:  enhancement  |      Status:  review             
  Priority:  minor        |   Milestone:                     
 Component:  Carpet       |     Version:                     
Resolution:               |    Keywords:  CarpetEvolutionMask
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Comment (by rhaas):

 I seem to want something non-standard. What I would like is the
 intersection of allbuffers (as defined in dh::regrid) and
 local_boxes...exterior. What is stored in local_boxes.buffers is
 allbuffers intersected with local_boxes...owned (and the difference
 between owned and exterior are the ghosts, yes?). Using just the
 information in local_boxes I guess I could get what I want by first
 setting up the buffer_mask using local_boxes...buffers, then do a low-
 level sync() call (or set prolongation_type = copy and do a SYNC in
 schedule.ccl). Would that be an acceptable method?

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1238#comment:9>
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