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# PetscSFWindowSetInfo
Set the `MPI_Info` handle that will be used for subsequent windows allocation
## Synopsis
```
#include "petscsf.h"
PetscErrorCode PetscSFWindowSetInfo(PetscSF sf, MPI_Info info)
```
Logically Collective
## Input Parameters
- ***sf -*** star forest for communication
- ***info -*** `MPI_Info` handle
## Note
The info handle is duplicated with a call to `MPI_Info_dup()` unless info = `MPI_INFO_NULL`.
## See Also
`PetscSF`, `PETSCSFWINDOW`, `PetscSFSetFromOptions()`, `PetscSFWindowGetInfo()`
## Level
advanced
## Location
src/vec/is/sf/impls/window/sfwindow.c
## Implementations
PetscSFWindowSetInfo_Window in src/vec/is/sf/impls/window/sfwindow.c
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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/vec/is/sf/impls/window/sfwindow.c)
[Index of all PetscSF routines](index.md)
[Table of Contents for all manual pages](/manualpages/index.md)
[Index of all manual pages](/manualpages/singleindex.md)