VecCreateMPI#
Creates a parallel vector.
Synopsis#
#include "petscvec.h"
PetscErrorCode VecCreateMPI(MPI_Comm comm, PetscInt n, PetscInt N, Vec *v)
Collective
Input Parameters#
comm - the MPI communicator to use
n - local vector length (or
PETSC_DECIDEto have calculated ifNis given)N - global vector length (or
PETSC_DETERMINEto have calculated ifnis given)
Output Parameter#
v - the vector
Notes#
It is recommended to use VecCreateFromOptions() instead of this routine
Use VecDuplicate() or VecDuplicateVecs() to form additional vectors of the
same type as an existing vector.
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, VecType, VecCreateSeq(), VecCreate(), VecDuplicate(), VecDuplicateVecs(), VecCreateGhost(),
VecCreateMPIWithArray(), VecCreateGhostWithArray(), VecMPISetGhost(), PetscLayout,
VecGetOwnershipRange(), VecGetOwnershipRanges()
Level#
intermediate
Location#
Examples#
src/ts/tutorials/ex30.c
src/tao/bound/tutorials/plate2.c
src/tao/bound/tutorials/plate2f.F90
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages