petsc-3.12.5 2020-03-29
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VecCreateMPI

 Creates a parallel vector.

Synopsis

#include "petscvec.h"   
PetscErrorCode  VecCreateMPI(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_DETERMINE to have calculated if n is given)

Output Parameter

vv -the vector

Notes

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

See Also

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

Level

intermediate

Location

src/vec/vec/impls/mpi/vmpicr.c

Examples

src/vec/vec/examples/tutorials/ex1.c.html
src/vec/vec/examples/tutorials/ex11.c.html
src/vec/vec/examples/tutorials/ex42a.c.html
src/vec/vec/examples/tutorials/ex1f.F90.html
src/vec/vec/examples/tutorials/ex1f90.F90.html
src/vec/vec/examples/tutorials/ex2f.F.html
src/vec/vec/examples/tutorials/ex11f.F.html
src/vec/vec/examples/tutorials/ex11f90.F90.html
src/vec/vec/examples/tutorials/ex20f90.F90.html
src/dm/field/examples/tutorials/ex1.c.html
src/ksp/ksp/examples/tutorials/ex2f.F90.html

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