VecSetSizes

Sets the local and global sizes, and checks to determine compatibility of the sizes

Synopsis

#include "petscvec.h"   
PetscErrorCode VecSetSizes(Vec v, PetscInt n, PetscInt N)

Collective

Input Parameters

• v - the vector

• n - the local size (or PETSC_DECIDE to have it set)

• N - the global size (or PETSC_DETERMINE to have it set)

Notes

N cannot be PETSC_DETERMINE if n is PETSC_DECIDE

If one processor calls this with N of PETSC_DETERMINE then all processors must, otherwise the program will hang.

See Also

Vectors and Parallel Data, Vec, VecGetSize(), PetscSplitOwnership()

Level

intermediate

Location

src/vec/vec/interface/vector.c

Examples

src/tao/pde_constrained/tutorials/elliptic.c
src/vec/vec/utils/tagger/tutorials/ex1.c
src/tao/pde_constrained/tutorials/parabolic.c
src/tao/constrained/tutorials/maros.c
src/tao/pde_constrained/tutorials/hyperbolic.c
src/vec/vec/tutorials/ex5.c
src/vec/vec/tutorials/ex44.c
src/tao/constrained/tutorials/tomographyADMM.c
src/tao/tutorials/ex4.c
src/tao/constrained/tutorials/ex1.c

---

Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages