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# TSSundialsSetUseDense
Set a flag to use a dense linear solver in `TSSUNDIALS` (serial only) 
## Synopsis
```
#include "petscts.h" 
PetscErrorCode TSSundialsSetUseDense(TS ts, PetscBool use_dense)
```
Logically Collective


## Input Parameters

- ***ts         -*** the time-step context
- ***use_dense  -*** `PETSC_TRUE` to use the dense solver





## See Also
 [](ch_ts), `TSSUNDIALS`

## Level
advanced

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

## Implementations

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