[ET Trac] [Einstein Toolkit] #928: openmp parallelization within Exact broken

[Einstein Toolkit]

#928: openmp parallelization within Exact broken
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  Reporter:  knarf                  |       Owner:                     
      Type:  defect                 |      Status:  confirmed          
  Priority:  minor                  |   Milestone:  ET_2012_11         
 Component:  EinsteinToolkit thorn  |     Version:  development version
Resolution:                         |    Keywords:                     
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Comment (by eschnett):

 "single" alone would not solve the issue. It ensures that only a single
 thread executes the code (similar to "critical"), but would still be
 executed for every grid point for this thread. To ensure that the other
 threads see the result of the single region, one would need some kind of
 synchronisation, probably either a barrier or (again) an if statement
 checking first_call. I don't see any advantage. Could you give a
 particular example?

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/928#comment:12>
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