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Relaxed constraints on MPI thread mode when not using multiple comms threads

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This commit is contained in:
Christopher Kelly 2018-02-15 17:13:36 +00:00
parent c96483e3bd
commit e30a80a234
1 changed files with 4 additions and 1 deletions
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5
lib/communicator/Communicator_mpi3.cc
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@ -44,7 +44,10 @@ void CartesianCommunicator::Init(int *argc, char ***argv)
MPI_Initialized(&flag); // needed to coexist with other libs apparently
if ( !flag ) {
MPI_Init_thread(argc,argv,MPI_THREAD_MULTIPLE,&provided);
assert (provided == MPI_THREAD_MULTIPLE);
//If only 1 comms thread we require any threading mode other than SINGLE, but for multiple comms threads we need MULTIPLE
if( (nCommThreads == 1 && provided == MPI_THREAD_SINGLE) ||
(nCommThreads > 1 && provided != MPI_THREAD_MULTIPLE) )
assert(0);
}
Grid_quiesce_nodes();