[ET Trac] [Einstein Toolkit] #495: MPI error from Carpet with QuasiLocalMeasures: "MPI_SUM is not defined for non-intrinsic datatypes"

[Einstein Toolkit]

#495: MPI error from Carpet with QuasiLocalMeasures: "MPI_SUM is not defined for
non-intrinsic datatypes"
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  Reporter:  hinder  |       Owner:  eschnett
      Type:  defect  |      Status:  new     
  Priority:  major   |   Milestone:          
 Component:  Carpet  |     Version:          
Resolution:          |    Keywords:          
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Comment (by eschnett):

 This is most likely not a problem in QLM, since that thorn only uses
 intrinsic MPI datatypes. I conjecture that this is a problem in
 CarpetReduce, most likely uncovered by a recent version of an MPI library
 that is more strict about checking standard conformance.

 I am still waiting for mor information. Please send a stack backtrace or
 similar that helps identify which routine uses which MPI datatype when
 this error occurs.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/495#comment:1>
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