petsc-dev 2014-07-21
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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 on MPI_Comm

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

Examples

src/vec/vec/examples/tutorials/ex1.c.html
src/vec/vec/examples/tutorials/ex11.c.html
src/vec/vec/examples/tutorials/ex1f.F.html
src/vec/vec/examples/tutorials/ex11f.F.html
src/snes/examples/tutorials/ex5s.c.html