#include "petscmat.h" PetscErrorCode MatCreateRedundantMatrix(Mat mat,PetscInt nsubcomm,MPI_Comm subcomm,MatReuse reuse,Mat *matredundant)Collective on Mat
| mat | - the matrix | |
| nsubcomm | - the number of subcommunicators (= number of redundant parallel or sequential matrices) | |
| subcomm | - MPI communicator split from the communicator where mat resides in (or MPI_COMM_NULL if nsubcomm is used) | |
| reuse | - either MAT_INITIAL_MATRIX or MAT_REUSE_MATRIX |
| matredundant | - redundant matrix |
This routine creates the duplicated matrices in subcommunicators; you should NOT create them before calling it.