[ET Trac] [Einstein Toolkit] #1618: Compile with adaptive MPI (based on Charm++)

[Einstein Toolkit]

#1618: Compile with adaptive MPI (based on Charm++)
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  Reporter:  jtao@…            |       Owner:                     
      Type:  enhancement       |      Status:  new                
  Priority:  major             |   Milestone:                     
 Component:  Cactus            |     Version:  development version
Resolution:                    |    Keywords:                     
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Comment (by eschnett):

 The reason Jian says that NR may not benefit is that simulation with large
 number of ghost zones may not benefit. Switching to other numerical
 methods, such as DG, may change the picture.

 Re Carpet: Most of Carpet's global variables live in a namespace. The
 reason this was done was one of convenience -- it is easier to access a
 namespace than a singleton class object where the pointer has to be
 retrieved from cctkGH. The changes to avoid global variables are
 straightforward, but tedious.

 There exist other global variables having to do with profiling, timing,
 keeping statistics etc. Those should probably be put into thread-local
 storage.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1618#comment:1>
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