petsc-3.7.7 2017-09-25

MatTransColoringApplyDenToSp

Given a symbolic matrix product Csp=A*B^T for which a MatTransposeColoring context has been created and a dense matrix Cden=A*Btdense in which Btdens is obtained from MatTransColoringApplySpToDen(), recover sparse matrix Csp from Cden.

Synopsis

#include "petscmat.h" 
PetscErrorCode MatTransColoringApplyDenToSp(MatTransposeColoring matcoloring,Mat Cden,Mat Csp)

Collective on MatTransposeColoring

Input Parameters

	coloring	- coloring context created with MatTransposeColoringCreate()
	Cden	- matrix product of a sparse matrix and a dense matrix Btdense

Output Parameter

Csp -sparse matrix

Options Database Keys

	-mat_multtranspose_coloring_view	- Activates basic viewing or coloring
	-mat_multtranspose_coloring_view_draw	- Activates drawing of coloring
	-mat_multtranspose_coloring_view_info	- Activates viewing of coloring info

Keywords

coloring