petsc-3.13.6 2020-09-29

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

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.

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