[ET Trac] [Einstein Toolkit] #1512: LoopControl slows down with time when exloring new tilings

[Einstein Toolkit]

#1512: LoopControl slows down with time when exloring new tilings
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  Reporter:  rhaas   |       Owner:  eschnett           
      Type:  defect  |      Status:  new                
  Priority:  major   |   Milestone:                     
 Component:  Carpet  |     Version:  development version
Resolution:          |    Keywords:  LoopControl        
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Comment (by rhaas):

 is it possible that LoopControl gets confused since there is not obviously
 good way of tiling this? In slab the loop is just a copy and I would
 (naively) expect that since this is completely memory bandwidth dominated
 it does not matter how many threads compete in which manner for the
 limited bandwidth.

 I attach LoopControl's statistics output for the parfile. As one can see
 there are very many params that loopcontrol explores. Since the loop in
 questions is small (just the boundary) the time to explore may well be
 comparable to the full runtime of the loop.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1512#comment:2>
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