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BUG: selfComm had 0 instead of parent rank for UPstream::procID (#2706)

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This commit is contained in:
Mark Olesen
2023-02-20 16:00:45 +01:00
parent 2569405383
commit a7d77391fa
1 changed files with 12 additions and 2 deletions
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14
src/Pstream/mpi/UPstream.C
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@ -348,6 +348,12 @@ bool Foam::UPstream::init(int& argc, char**& argv, const bool needsThread)
// For testing: warn use of non-worldComm
UPstream::warnComm = UPstream::worldComm;
// For selfComm : the processor number wrt the new world communicator
if (procIDs_[UPstream::selfComm].size())
{
procIDs_[UPstream::selfComm].front() = UPstream::myProcNo(subComm);
}
if (debug)
{
// Check
@ -565,7 +571,7 @@ void Foam::UPstream::allocatePstreamCommunicator
}
else if (parentIndex == -2)
{
// Self communicator
// Self communicator (selfComm)
PstreamGlobals::pendingMPIFree_[index] = PstreamGlobals::NonePending;
PstreamGlobals::MPICommunicators_[index] = MPI_COMM_SELF;
@ -588,8 +594,12 @@ void Foam::UPstream::allocatePstreamCommunicator
}
#endif
// For selfComm : the process IDs within the world communicator.
// Uses MPI_COMM_WORLD in case called before UPstream::globalComm
// was initialized
procIDs_[index].resize_nocopy(1);
procIDs_[index] = 0;
MPI_Comm_rank(MPI_COMM_WORLD, &procIDs_[index].front());
}
else
{