# TSGetKSP
Returns the KSP (linear solver) associated with a TS (timestepper) context. 
## Synopsis
```
#include "petscts.h"  
PetscErrorCode TSGetKSP(TS ts, KSP *ksp)
```
Not Collective, but KSP is parallel if TS is parallel


## Input Parameter

- ***ts -*** the TS context obtained from TSCreate()



## Output Parameter

- ***ksp -*** the nonlinear solver context



## Notes
The user can then directly manipulate the KSP context to set various
options, etc.  Likewise, the user can then extract and manipulate the
KSP and PC contexts as well.

TSGetKSP() does not work for integrators that do not use KSP;
in this case TSGetKSP() returns NULL in ksp.




## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/interface/ts.c.html#TSGetKSP">src/ts/interface/ts.c</A>


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


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