Small fix for MPI to work with ddm
Small serror in Helmholtz.pro (D instead of myD) that makes ddm_waves example with mpirun not working (more than one process). Problem was a group was then not defined.
Small serror in Helmholtz.pro (D instead of myD) that makes ddm_waves example with mpirun not working (more than one process). Problem was a group was then not defined.