petsc-3.10.5 2019-03-28
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# VecGetOwnershipRange

Returns the range of indices owned by this processor, assuming that the vectors are laid out with the first n1 elements on the first processor, next n2 elements on the second, etc. For certain parallel layouts this range may not be well defined.

### Synopsis

    #include "petscvec.h"
    PetscErrorCode  VecGetOwnershipRange(Vec x,PetscInt *low,PetscInt *high)

Not Collective

### Input Parameter

x -the vector

### Output Parameters

| low | - the first local element, pass in NULL if not interested
| high | - one more than the last local element, pass in NULL if not interested

### Note

The high argument is one more than the last element stored locally.

Fortran: NULL_INTEGER should be used instead of NULL

### See Also

MatGetOwnershipRange(), MatGetOwnershipRanges(), VecGetOwnershipRanges()

### Level

beginner

### Location

src/vec/vec/interface/vector.c

### Examples

src/vec/vec/utils/tagger/examples/tutorials/ex1.c.html
src/vec/vec/examples/tutorials/ex3.c.html
src/vec/vec/examples/tutorials/ex5.c.html
src/vec/vec/examples/tutorials/ex8.c.html
src/vec/vec/examples/tutorials/ex9.c.html
src/vec/vec/examples/tutorials/ex10.c.html
src/vec/vec/examples/tutorials/ex15.c.html
src/vec/vec/examples/tutorials/ex16.c.html
src/vec/vec/examples/tutorials/ex18.c.html
src/vec/vec/examples/tutorials/ex3f.F.html
src/vec/vec/examples/tutorials/ex9f.F90.html
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages