petsc-3.11.4 2019-09-28

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

Notes

These are used internally for some implementations of MatRARt()

Keywords

coloring

Level

advanced

Location

src/mat/interface/matrix.c

Implementations

MatTransColoringApplyDenToSp_SeqAIJ in src/mat/impls/aij/seq/matmatmult.c

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