mpiWorld.getComm().Bcast (&opt_nsample, 1, MPI::INT, 0);
mpiWorld.getComm().Bcast (&optFilterParam, 1, MPI::DOUBLE, 0);
mpiWorld.getComm().Bcast (&optFilterBW, 1, MPI::DOUBLE, 0);
mpiWorld.getComm().Bcast (&opt_nsample, 1, MPI::INT, 0);
mpiWorld.getComm().Bcast (&optFilterParam, 1, MPI::DOUBLE, 0);
mpiWorld.getComm().Bcast (&optFilterBW, 1, MPI::DOUBLE, 0);