VecCreateShared

Creates a parallel vector that uses shared memory.

Synopsis

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

Collective

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

• v - the vector

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

Vectors and Parallel Data, Vec, VecType, VecCreateSeq(), VecCreate(), VecCreateMPI(), VecDuplicate(), VecDuplicateVecs(), VecCreateGhost(), VecCreateMPIWithArray(), VecCreateGhostWithArray()

Level

advanced

Location

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

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Index of all Vec routines
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Index of all manual pages