#include "petscvec.h" PetscErrorCode VecCreateGhostBlock(MPI_Comm comm,PetscInt bs,PetscInt n,PetscInt N,PetscInt nghost,const PetscInt ghosts[],Vec *vv)Collective
| comm | - the MPI communicator to use | |
| bs | - the block size | |
| n | - local vector length | |
| N | - global vector length (or PETSC_DECIDE to have calculated if n is given) | |
| nghost | - number of local ghost blocks | |
| ghosts | - global indices of ghost blocks, counts are by block, not by individual index, these do not need to be in increasing order (sorted) |
| vv | - the global vector representation (without ghost points as part of vector) |
n is the local vector size (total local size not the number of blocks) while nghost is the number of blocks in the ghost portion, i.e. the number of elements in the ghost portion is bs*nghost