:orphan:
# VecCreate
Creates an empty vector object. The type can then be set with `VecSetType()`, or `VecSetFromOptions().` 
## Synopsis
```
#include "petscvec.h"   
PetscErrorCode VecCreate(MPI_Comm comm, Vec *vec)
```
Collective


## Input Parameter

- ***comm -*** The communicator for the vector object



## Output Parameter

- ***vec  -*** The vector object





## Notes
If you never  call `VecSetType()` or `VecSetFromOptions()` it will generate an
error when you try to use the vector.


## See Also
 [](ch_vectors), `Vec`, `VecSetType()`, `VecSetSizes()`, `VecCreateMPIWithArray()`, `VecCreateMPI()`, `VecDuplicate()`,
`VecDuplicateVecs()`, `VecCreateGhost()`, `VecCreateSeq()`, `VecPlaceArray()`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/interface/veccreate.c.html#VecCreate">src/vec/vec/interface/veccreate.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/tutorials/ex14.c.html">src/dm/tutorials/ex14.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/ksp/tutorials/bench_kspsolve.c.html">src/ksp/ksp/tutorials/bench_kspsolve.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/ksp/tutorials/ex1.c.html">src/ksp/ksp/tutorials/ex1.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/ksp/tutorials/ex10.c.html">src/ksp/ksp/tutorials/ex10.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/ksp/tutorials/ex11.c.html">src/ksp/ksp/tutorials/ex11.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/ksp/tutorials/ex11f.F90.html">src/ksp/ksp/tutorials/ex11f.F90</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/ksp/tutorials/ex12.c.html">src/ksp/ksp/tutorials/ex12.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/ksp/tutorials/ex15.c.html">src/ksp/ksp/tutorials/ex15.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/ksp/tutorials/ex15f.F90.html">src/ksp/ksp/tutorials/ex15f.F90</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/ksp/tutorials/ex16.c.html">src/ksp/ksp/tutorials/ex16.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/ksp/tutorials/ex18.c.html">src/ksp/ksp/tutorials/ex18.c</A><BR>

## Implementations

<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/impls/mpi/cupm/cuda/vecmpicupm.cu.html#VecCreate_CUDA">VecCreate_CUDA in src/vec/vec/impls/mpi/cupm/cuda/vecmpicupm.cu</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/impls/mpi/cupm/cuda/vecmpicupm.cu.html#VecCreate_MPICUDA">VecCreate_MPICUDA in src/vec/vec/impls/mpi/cupm/cuda/vecmpicupm.cu</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/impls/mpi/cupm/hip/vecmpicupm.hip.c.html#VecCreate_HIP">VecCreate_HIP in src/vec/vec/impls/mpi/cupm/hip/vecmpicupm.hip.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/impls/mpi/cupm/hip/vecmpicupm.hip.c.html#VecCreate_MPIHIP">VecCreate_MPIHIP in src/vec/vec/impls/mpi/cupm/hip/vecmpicupm.hip.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/impls/mpi/kokkos/mpikok.kokkos.cxx.html#VecCreate_MPIKokkos">VecCreate_MPIKokkos in src/vec/vec/impls/mpi/kokkos/mpikok.kokkos.cxx</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/impls/mpi/kokkos/mpikok.kokkos.cxx.html#VecCreate_Kokkos">VecCreate_Kokkos in src/vec/vec/impls/mpi/kokkos/mpikok.kokkos.cxx</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/impls/mpi/mpiviennacl/mpiviennacl.cxx.html#VecCreate_MPIViennaCL">VecCreate_MPIViennaCL in src/vec/vec/impls/mpi/mpiviennacl/mpiviennacl.cxx</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/impls/mpi/mpiviennacl/mpiviennacl.cxx.html#VecCreate_ViennaCL">VecCreate_ViennaCL in src/vec/vec/impls/mpi/mpiviennacl/mpiviennacl.cxx</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/impls/mpi/pbvec.c.html#VecCreate_MPI">VecCreate_MPI in src/vec/vec/impls/mpi/pbvec.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/impls/mpi/pbvec.c.html#VecCreate_Standard">VecCreate_Standard in src/vec/vec/impls/mpi/pbvec.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/impls/seq/bvec3.c.html#VecCreate_Seq">VecCreate_Seq in src/vec/vec/impls/seq/bvec3.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/impls/seq/cupm/cuda/vecseqcupm.cu.html#VecCreate_SeqCUDA">VecCreate_SeqCUDA in src/vec/vec/impls/seq/cupm/cuda/vecseqcupm.cu</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/impls/seq/cupm/hip/vecseqcupm.hip.c.html#VecCreate_SeqHIP">VecCreate_SeqHIP in src/vec/vec/impls/seq/cupm/hip/vecseqcupm.hip.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/impls/seq/kokkos/veckok.kokkos.cxx.html#VecCreate_SeqKokkos">VecCreate_SeqKokkos in src/vec/vec/impls/seq/kokkos/veckok.kokkos.cxx</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/impls/seq/seqviennacl/vecviennacl.cxx.html#VecCreate_SeqViennaCL">VecCreate_SeqViennaCL in src/vec/vec/impls/seq/seqviennacl/vecviennacl.cxx</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/impls/shared/shvec.c.html#VecCreate_Shared">VecCreate_Shared in src/vec/vec/impls/shared/shvec.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/impls/shared/shvec.c.html#VecCreate_Shared">VecCreate_Shared in src/vec/vec/impls/shared/shvec.c</A><BR>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/vec/vec/interface/veccreate.c)


[Index of all Vec routines](index.md)  
[Table of Contents for all manual pages](/manualpages/index.md)  
[Index of all manual pages](/manualpages/singleindex.md)