MatCompositeMerge#

Given a composite matrix, replaces it with a “regular” matrix by summing or computing the product of all the matrices inside the composite matrix.

Synopsis#

#include "petscmat.h" 
PetscErrorCode MatCompositeMerge(Mat mat)

Collective

Input Parameter#

  • mat - the composite matrix

Options Database Keys#

  • -mat_composite_merge - merge in MatAssemblyEnd()

  • -mat_composite_merge_type - set merge direction

Note#

The MatType of the resulting matrix will be the same as the MatType of the FIRST matrix in the composite matrix.

See Also#

Matrices, Mat, MatDestroy(), MatMult(), MatCompositeAddMat(), MatCreateComposite(), MatCompositeSetMatStructure(), MatCompositeSetMergeType(), MATCOMPOSITE

Level#

advanced

Location#

src/mat/impls/composite/mcomposite.c

Examples#

src/mat/tutorials/ex9.c

Implementations#

MatCompositeMerge_Composite() in src/mat/impls/composite/mcomposite.c


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