MatISSetLocalMat

Replace the local matrix stored inside a MATIS object.

Synopsis

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

Not Collective

Input Parameters

• mat - the matrix

• local - the local matrix

Notes

This call does not update the state of mat. After replacing the local matrix, call MatAssemblyBegin() and MatAssemblyEnd() on mat before using it, even if local is already assembled. All processes sharing mat must participate in this assembly, including those that did not replace their local matrix. Assembly propagates the change and invalidates cached diagonal blocks and assembled views.

See Also

Matrices, Mat, MATIS, MatISSetLocalMatType, MatISGetLocalMat(), MatAssemblyBegin(), MatAssemblyEnd()

Level

intermediate

Location

src/mat/impls/is/matis.c

Examples

src/mat/tests/ex23.c
src/mat/tests/ex321.c
src/ksp/ksp/tutorials/ex59.c

Implementations

MatISSetLocalMat_IS() in src/mat/impls/is/matis.c

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