petsc-3.14.6 2021-03-30
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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 Parameters

mat - the composite matrix

Options Database Keys

-mat_composite_merge - merge in MatAssemblyEnd()
-mat_composite_merge_type - set merge direction

Notes

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

See Also

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

Level

advanced

Location

src/mat/impls/composite/mcomposite.c

Examples

src/mat/tutorials/ex9.c.html

Implementations

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

Index of all Mat routines
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Index of all manual pages