[ET Trac] [Einstein Toolkit] #558: Carpet with Periodic Boundary Conditions

[Einstein Toolkit]

#558: Carpet with Periodic Boundary Conditions
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 Reporter:  hfinkel@…        |       Owner:  eschnett
     Type:  enhancement      |      Status:  new     
 Priority:  major            |   Milestone:          
Component:  Carpet           |     Version:          
 Keywords:  carpet periodic  |  
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 The current Carpet driver is not compatible with the periodic boundary
 conditions (as provided by the Periodic thorn or otherwise).

 Erik's comment on the User's list was:
 "It is straightforward to implement periodicity in the grid structure
 -- one needs to take the current grid structure, shift it in the 26
 directions, and take the logical union of all 27 grid structures. This
 will then be automatically clipped. The most complex part is
 calculating by how much to shift."

 Please implement support for periodic BCs in Carpet. This will directly
 enable production science runs.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/558>
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