petsc-3.14.5 2021-03-03
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# VecDuplicateVecs

Creates several vectors of the same type as an existing vector.

### Synopsis

    #include "petscvec.h"
    PetscErrorCode  VecDuplicateVecs(Vec v,PetscInt m,Vec *V[])

Collective on Vec

### Input Parameters

| m | - the number of vectors to obtain
| v | - a vector to mimic

### Output Parameter

| V | - location to put pointer to array of vectors

### Notes

Use VecDestroyVecs() to free the space. Use VecDuplicate() to form a single vector.

### Fortran Note

The Fortran interface is slightly different from that given below, it requires one to pass in V a Vec (integer) array of size at least m. See the Fortran chapter of the users manual and petsc/src/vec/vec/examples for details.

### See Also

VecDestroyVecs(), VecDuplicate(), VecCreate(), VecDuplicateVecsF90()

### Level

intermediate

### Location

src/vec/vec/interface/vector.c

### Examples

src/vec/vec/tutorials/ex1.c.html
src/vec/vec/tutorials/ex1f.F90.html
src/ksp/ksp/tutorials/ex49.c.html
src/tao/pde_constrained/tutorials/parabolic.c.html
src/tao/pde_constrained/tutorials/hyperbolic.c.html
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages