[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 bentivegna):

 A related question: what has changed in CarpetReduce between the git and
 mercurial versions? The error appears when switching from the former to
 the latter, with the exact same Open MPI implementation (1.5.4).

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/495#comment:6>
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