integer MPI_THREAD_SINGLE, MPI_THREAD_FUNNELED
integer MPI_THREAD_SERIALIZED, MPI_THREAD_MULTIPLE
parameter(MPI_THREAD_SINGLE=0)
integer MPI_THREAD_SINGLE, MPI_THREAD_FUNNELED
integer MPI_THREAD_SERIALIZED, MPI_THREAD_MULTIPLE
parameter(MPI_THREAD_SINGLE=0)