[ET Trac] [Einstein Toolkit] #620: Simplify timelevel handling for Cactus thorn writers

[Einstein Toolkit]

#620: Simplify timelevel handling for Cactus thorn writers
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  Reporter:  hinder       |       Owner:          
      Type:  enhancement  |      Status:  reopened
  Priority:  major        |   Milestone:          
 Component:  Cactus       |     Version:          
Resolution:               |    Keywords:          
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Comment (by hinder):

 That would address interface.ccl. What about schedule.ccl?  I would like
 an application thorn to only have to declare the number of timelevels that
 it actually needs.  So a wave equation thorn, writing to only one
 timelevel, would just say
 {{{
   STORAGE: phi[1]
 }}}
 I think the 1 is actually optional in this case.  Then we need a way for
 MoL to dynamically tell the driver that it needs two timelevels for phi,
 and Carpet to indicate that it needs 3 if the time prolongation order
 requires it.  What would be a good way of implementing this?  It is not
 quite the same as SetMaxTimelevels.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/620#comment:6>
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