petsc-3.8.4 2018-03-24
Report Typos and Errors

MatCreateSubMatricesMPI

 Extracts MPI submatrices across a sub communicator of mat (by pairs of IS that may live on subcomms).

Synopsis

#include "petscmat.h" 
PetscErrorCode MatCreateSubMatricesMPI(Mat mat,PetscInt n,const IS irow[],const IS icol[],MatReuse scall,Mat *submat[])
Collective on Mat

Input Parameters

mat - the matrix
n - the number of submatrixes to be extracted
irow, icol - index sets of rows and columns to extract
scall - either MAT_INITIAL_MATRIX or MAT_REUSE_MATRIX

Output Parameter

submat -the array of submatrices

See Also

MatCreateSubMatrices(), MatCreateSubMatrix(), MatGetRow(), MatGetDiagonal(), MatReuse

Level:advanced
Location:src/mat/interface/matrix.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages