petsc-3.7.5 2017-01-01

VecCreateShared

Creates a parallel vector that uses shared memory.

#include "petscvec.h"   
PetscErrorCode  VecCreateShared(MPI_Comm comm,PetscInt n,PetscInt N,Vec *v)

comm -the MPI communicator to use

n -local vector length (or PETSC_DECIDE to have calculated if N is given)

N -global vector length (or PETSC_DECIDE to have calculated if n is given)

vv -the vector

Collective on MPI_Comm

Currently VecCreateShared() is available only on the SGI; otherwise, this routine is the same as VecCreateMPI().

Use VecDuplicate() or VecDuplicateVecs() to form additional vectors of the same type as an existing vector.