[ET Trac] [Einstein Toolkit] #1797: allow new timelevels to be created at runtime

[Einstein Toolkit]

#1797: allow new timelevels to be created at runtime
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  Reporter:  rhaas        |       Owner:                     
      Type:  enhancement  |      Status:  review             
  Priority:  optional     |   Milestone:                     
 Component:  Cactus       |     Version:  development version
Resolution:               |    Keywords:  Cactus Carpet PUGH 
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Comment (by eschnett):

 The case I'm worried about is the following: Assume there's some code that
 allocates only a single time level. Now some other thorn "secretly"
 increases the number of time levels, e.g. for time interpolation. This
 will then "secretly" destroy the current time level during time level
 cycling.

 I propose to modify PUGH to copy the past to the current time level, and
 to modify Carpet to not overwrite the current timelevel with nans. MoL's
 copy routine would then be omitted.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1797#comment:4>
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