[ET Trac] [Einstein Toolkit] #694: Behavior of Slab_Transfer between components owned by the same process

[Einstein Toolkit]

#694: Behavior of Slab_Transfer between components owned by the same process
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 Reporter:  bentivegna  |       Owner:                     
     Type:  defect      |      Status:  new                
 Priority:  major       |   Milestone:                     
Component:  Cactus      |     Version:  development version
 Keywords:  Slab        |  
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 Slab's documentation states that the Slab_Transfer only works when each
 process handles a single rectangular component. This affects small runs
 with periodic boundary conditions (imposed through Slab_Transfer), where
 two or more components on a single process are common because refinements
 that try to go past the symmetry boundary are carried over to the opposite
 side. Currently (attached parameter file), Slab_Transfer silently fails
 and the boundaries are simply never touched after initial data (except for
 the usual timelevel cycling).

 I'm not sure how easy it is to extend this functionality, but a check that
 Slab_Transfer is only used as intended should be inserted as soon as
 possible.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/694>
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