VecCreateShared#

Creates a parallel vector that uses shared memory.

Synopsis#

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

Input Parameters#

  • 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)

Output Parameter#

  • vv - the vector

Collective

Notes#

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.

See Also#

VecCreateSeq(), VecCreate(), VecCreateMPI(), VecDuplicate(), VecDuplicateVecs(), VecCreateGhost(), VecCreateMPIWithArray(), VecCreateGhostWithArray()

Level#

advanced

Location#

src/vec/vec/impls/shared/shvec.c

Examples#

src/vec/vec/tutorials/ex11.c.html
src/vec/vec/tutorials/ex11f90.F90.html
src/vec/vec/tutorials/ex11f.F90.html
src/vec/vec/tutorials/ex13.c.html
src/vec/vec/tutorials/ex1.c.html
src/vec/vec/tutorials/ex1f.F90.html


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