# TSSundialsSetLinearTolerance
Sets the tolerance used to solve the linear system by `TSSUNDIALS`. 
## Synopsis
```
#include "petscts.h" 
PetscErrorCode TSSundialsSetLinearTolerance(TS ts, PetscReal tol)
```
Logically Collective


## Input Parameters

- ***ts     -*** the time-step context
- ***tol    -*** the factor by which the tolerance on the nonlinear solver is
multiplied to get the tolerance on the linear solver, .05 by default.





## See Also
 [](chapter_ts), `TSSundialsGetIterations()`, `TSSundialsSetType()`, `TSSundialsSetMaxl()`,
`TSSundialsSetGramSchmidtType()`, `TSSundialsSetTolerance()`,
`TSSundialsGetIterations()`, `TSSundialsSetType()`,
`TSSundialsSetLinearTolerance()`, `TSSundialsSetTolerance()`, `TSSundialsGetPC()`,
`TSSetExactFinalTime()`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/impls/implicit/sundials/sundials.c.html#TSSundialsSetLinearTolerance">src/ts/impls/implicit/sundials/sundials.c</A>

## Implementations

<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/impls/implicit/sundials/sundials.c.html#TSSundialsSetLinearTolerance_Sundials">TSSundialsSetLinearTolerance_Sundials in src/ts/impls/implicit/sundials/sundials.c</A><BR>


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


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