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# MATSOLVERSUPERLU
"superlu" - A solver package providing solvers LU and ILU for sequential matrices via the external package SuperLU. Use `./configure --download-superlu` to have PETSc installed with SuperLU

Use `-pc_type lu` `-pc_factor_mat_solver_type superlu` to use this direct solver


## Options Database Keys

- ***-mat_superlu_equil <FALSE>            -*** Equil (None)
- ***-mat_superlu_colperm <COLAMD>         -*** (choose one of) `NATURAL`, `MMD_ATA MMD_AT_PLUS_A`, `COLAMD`
- ***-mat_superlu_iterrefine <NOREFINE>    -*** (choose one of) `NOREFINE`, `SINGLE`, `DOUBLE`, `EXTRA`
- ***-mat_superlu_symmetricmode: <FALSE>   -*** SymmetricMode (None)
- ***-mat_superlu_diagpivotthresh <1>      -*** DiagPivotThresh (None)
- ***-mat_superlu_pivotgrowth <FALSE>      -*** PivotGrowth (None)
- ***-mat_superlu_conditionnumber <FALSE>  -*** ConditionNumber (None)
- ***-mat_superlu_rowperm <NOROWPERM>      -*** (choose one of) `NOROWPERM`, `LargeDiag`
- ***-mat_superlu_replacetinypivot <FALSE> -*** ReplaceTinyPivot (None)
- ***-mat_superlu_printstat <FALSE>        -*** PrintStat (None)
- ***-mat_superlu_lwork <0>                -*** size of work array in bytes used by factorization (None)
- ***-mat_superlu_ilu_droptol <0>          -*** ILU_DropTol (None)
- ***-mat_superlu_ilu_filltol <0>          -*** ILU_FillTol (None)
- ***-mat_superlu_ilu_fillfactor <0>       -*** ILU_FillFactor (None)
- ***-mat_superlu_ilu_droprull <0>         -*** ILU_DropRule (None)
- ***-mat_superlu_ilu_norm <0>             -*** ILU_Norm (None)
- ***-mat_superlu_ilu_milu <0>             -*** ILU_MILU (None)





## Notes
Do not confuse this with `MATSOLVERSUPERLU_DIST` which is for parallel sparse solves

Cannot use ordering provided by PETSc, provides its own.


## See Also
 [](ch_matrices), `Mat`, `PCLU`, `PCILU`, `MATSOLVERSUPERLU_DIST`, `MATSOLVERMUMPS`, `PCFactorSetMatSolverType()`, `MatSolverType`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/impls/aij/seq/superlu/superlu.c.html#MATSOLVERSUPERLU">src/mat/impls/aij/seq/superlu/superlu.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/ksp/tutorials/ex52.c.html">src/ksp/ksp/tutorials/ex52.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/tao/constrained/tutorials/maros.c.html">src/tao/constrained/tutorials/maros.c</A><BR>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/mat/impls/aij/seq/superlu/superlu.c)


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