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# TAOPDIPM
Barrier-based primal-dual interior point algorithm for generally constrained optimization. 
## Options Database Keys

- ***-tao_pdipm_push_init_lambdai -*** parameter to push initial dual variables away from bounds (> 0)
- ***-tao_pdipm_push_init_slack -*** parameter to push initial slack variables away from bounds (> 0)
- ***-tao_pdipm_mu_update_factor -*** update scalar for barrier parameter (mu) update (> 0)
- ***-tao_pdipm_symmetric_kkt -*** Solve non-reduced symmetric KKT system
- ***-tao_pdipm_kkt_shift_pd -*** Add shifts to make KKT matrix positive definite





## See Also
 `TAOPDIPM`, `Tao`, `TaoType`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/tao/constrained/impls/ipm/pdipm.c.html#TAOPDIPM">src/tao/constrained/impls/ipm/pdipm.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/tao/constrained/tutorials/ex1.c.html">src/tao/constrained/tutorials/ex1.c</A><BR>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/tao/constrained/impls/ipm/pdipm.c)


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