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# DMGlobalToLocal
update local vectors from global vector
## Synopsis
```
#include "petscdm.h"
#include "petscdmlabel.h"
#include "petscds.h"
PetscErrorCode DMGlobalToLocal(DM dm, Vec g, InsertMode mode, Vec l)
```
Neighbor-wise Collective
## Input Parameters
- ***dm -*** the `DM` object
- ***g -*** the global vector
- ***mode -*** `INSERT_VALUES` or `ADD_VALUES`
- ***l -*** the local vector
## Notes
The communication involved in this update can be overlapped with computation by instead using
`DMGlobalToLocalBegin()` and `DMGlobalToLocalEnd()`.
`DMGlobalToLocalHookAdd()` may be used to provide additional operations that are performed during the update process.
## See Also
[](ch_dmbase), `DM`, `DMGlobalToLocalHookAdd()`, `DMCoarsen()`, `DMDestroy()`, `DMView()`, `DMCreateGlobalVector()`, `DMCreateInterpolation()`,
`DMGlobalToLocalEnd()`, `DMLocalToGlobalBegin()`, `DMLocalToGlobal()`, `DMLocalToGlobalBegin()`, `DMLocalToGlobalEnd()`,
`DMGlobalToLocalBegin()` `DMGlobalToLocalEnd()`
## Level
beginner
## Location
src/dm/interface/dm.c
## Examples
src/dm/impls/stag/tutorials/ex1.c
src/dm/impls/stag/tutorials/ex3.c
src/dm/impls/stag/tutorials/ex4.c
src/dm/impls/stag/tutorials/ex6.c
src/dm/tutorials/ex2.c
src/snes/tutorials/ex3k.kokkos.cxx
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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/dm/interface/dm.c)
[Index of all DM routines](index.md)
[Table of Contents for all manual pages](/manualpages/index.md)
[Index of all manual pages](/manualpages/singleindex.md)