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Fix MeasurementSet MPI_COMM handling for MPICH #1

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Merged
mwiering merged 1 commit into from
Mar 3, 2026
Merged

Fix MeasurementSet MPI_COMM handling for MPICH #1

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7 changes: 6 additions & 1 deletion ms/MeasurementSets/MeasurementSet.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -894,7 +894,12 @@ static Table create_table(SetupNewTable &tableSetup, T /*comm*/)

void MeasurementSet::createDefaultSubtables(Table::TableOption option)
{
createDefaultSubtables_impl(option, 0);
// With MPICH the MPI_COMM is an int, so need some trickery to avoid
// ending up calling the 2nd create_table template with invalid comm
#ifndef HAVE_MPI
float MPI_COMM_SELF = 1.0;
#endif
createDefaultSubtables_impl(option,MPI_COMM_SELF);
}

#ifdef HAVE_MPI
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