petsc-dev 2014-08-28
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MatGetBrowsOfAcols

Creates a SeqAIJ matrix by taking rows of B that equal to nonzero columns of local A

Synopsis

#include "petscmat.h" 
PetscErrorCode  MatGetBrowsOfAcols(Mat A,Mat B,MatReuse scall,IS *rowb,IS *colb,Mat *B_seq)
Collective on Mat

Input Parameters

A,B - the matrices in mpiaij format
scall - either MAT_INITIAL_MATRIX or MAT_REUSE_MATRIX
rowb, colb - index sets of rows and columns of B to extract (or NULL)

Output Parameter

rowb, colb - index sets of rows and columns of B to extract
B_seq - the sequential matrix generated

Level:developer
Location:
src/mat/impls/aij/mpi/mpiaij.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages