message: enabled multi-thread for MPI in DataMan tests
diff: @@ -436,7 +436,10 @@ TEST_F(DataManEngineTest, WriteRead_1D_Callback)
  int main(int argc, char **argv)
  {
  #ifdef ADIOS2_HAVE_MPI
  - MPI_Init(&argc, &argv);
  + int mpi_provided;
  + MPI_Init_thread(&argc, &argv, MPI_THREAD_MULTIPLE, &mpi_provided);
  + std::cout << "MPI_Init_thread required Mode " << MPI_THREAD_MULTIPLE
  + << " and provided Mode " << mpi_provided << std::endl;
  MPI_Comm_rank(MPI_COMM_WORLD, &mpiRank);
  MPI_Comm_size(MPI_COMM_WORLD, &mpiSize);
  #endif
  