petsc-3.13.6 2020-09-29

MatISSetLocalMat

Replace the local matrix stored inside a MATIS object.

#include "petscmat.h" 
PetscErrorCode MatISSetLocalMat(Mat mat,Mat local)

Collective on Mat

	mat	- the matrix
	local	- the local matrix

This can be called if you have precomputed the local matrix and want to provide it to the matrix object MATIS.

advanced