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#

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.

If n is not PETSC_DECIDE, then the value determines the PetscLayout of the vector and the ranges returned by VecGetOwnershipRange() and VecGetOwnershipRanges()

See Also#

Vectors and Parallel Data, Vec, VecCreate(), VecCreateSeq(), VecCreateMPI(), VecGetSize(), PetscSplitOwnership(), PetscLayout, VecGetOwnershipRange(), VecGetOwnershipRanges(), MatSetSizes()

Level#

intermediate

Location#

src/vec/vec/interface/vector.c

Examples#

src/tao/tutorials/ex4.c
src/tao/constrained/tutorials/tomographyADMM.c
src/vec/vec/tutorials/ex11f.F90
src/tao/pde_constrained/tutorials/elliptic.c
src/tao/pde_constrained/tutorials/parabolic.c
src/tao/constrained/tutorials/ex1.c
src/vec/vec/utils/tagger/tutorials/ex1.c
src/tao/pde_constrained/tutorials/hyperbolic.c
src/tao/constrained/tutorials/maros.c
src/vec/vec/tutorials/ex11f90.F90


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