MatGetLocalSize#

For most matrix formats, excluding MATELEMENTAL and MATSCALAPACK, Returns the number of local rows and local columns of a matrix. For all matrices this is the local size of the left and right vectors as returned by MatCreateVecs().

Synopsis#

#include "petscmat.h" 
PetscErrorCode MatGetLocalSize(Mat mat, PetscInt *m, PetscInt *n)

Not Collective

Input Parameter#

  • mat - the matrix

Output Parameters#

  • m - the number of local rows, use NULL to not obtain this value

  • n - the number of local columns, use NULL to not obtain this value

See Also#

Matrices, Mat, MatSetSizes(), MatGetSize()

Level#

beginner

Location#

src/mat/interface/matrix.c

Examples#

src/ksp/ksp/tutorials/ex10.c
src/ksp/ksp/tutorials/ex27.c
src/ksp/ksp/tutorials/ex72.c
src/ksp/ksp/tutorials/ex77.c
src/ksp/ksp/tutorials/ex77f.F90
src/snes/tutorials/ex12.c

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Index of all Mat routines
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Index of all manual pages