[ET Trac] [Einstein Toolkit] #2023: CarpetInterp hangs with openmpi

[Einstein Toolkit]

#2023: CarpetInterp hangs with openmpi
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  Reporter:  anonymous  |       Owner:                     
      Type:  defect     |      Status:  new                
  Priority:  unset      |   Milestone:                     
 Component:  Other      |     Version:  development version
Resolution:             |    Keywords:  OpenMPI, Carpet    
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Comment (by hinder):

 This looks very similar to what we encountered with OmniPath on Minerva,
 which held up the acceptance for a few months.  In that case, it was a bug
 in the OmniPath driver, which Intel eventually found and fixed, using our
 reproducible example.  It looks the same on surface (a hang in
 MPI_Alltoallv), but you are using OpenMPI and infiniband, whereas we were
 using Intel MPI and OmniPath, so unfortunately this doesn't seem to be the
 same problem.  You could also try compiling without optimisation to see if
 that gives better backtraces.

 Is your problem reproducible?  What cluster is this?  Have you tried
 different OpenMPI versions, or a different MPI implementation?

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/2023#comment:1>
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