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# MATSOLVERSUPERLU_DIST
Parallel direct solver package for LU factorization Use `./configure --download-superlu_dist --download-parmetis --download-metis --download-ptscotch`  to have PETSc installed with SuperLU_DIST

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

Works with `MATAIJ` matrices


## Options Database Keys

- ***-mat_superlu_dist_r <n> -*** number of rows in processor partition
- ***-mat_superlu_dist_c <n> -*** number of columns in processor partition
- ***-mat_superlu_dist_3d -*** use 3d partition, requires SuperLU_DIST 7.2 or later
- ***-mat_superlu_dist_d <n> -*** depth in 3d partition (valid only if `-mat_superlu_dist_3d`) is provided
- ***-mat_superlu_dist_equil -*** equilibrate the matrix
- ***-mat_superlu_dist_rowperm <NOROWPERM,LargeDiag_MC64,LargeDiag_AWPM,MY_PERMR> -*** row permutation
- ***-mat_superlu_dist_colperm <NATURAL,MMD_AT_PLUS_A,MMD_ATA,METIS_AT_PLUS_A,PARMETIS> -*** column permutation
- ***-mat_superlu_dist_replacetinypivot -*** replace tiny pivots
- ***-mat_superlu_dist_fact <SamePattern> -*** (choose one of) `SamePattern`, `SamePattern_SameRowPerm`, `DOFACT`
- ***-mat_superlu_dist_iterrefine -*** use iterative refinement
- ***-mat_superlu_dist_printstat -*** print factorization information





## Note
If PETSc was configured with `--with-cuda` then this solver will automatically use the GPUs.


## See Also
 [](ch_matrices), `Mat`, `PCLU`, `PCFactorSetMatSolverType()`, `MatSolverType`, `MatGetFactor()`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/impls/aij/mpi/superlu_dist/superlu_dist.c.html#MATSOLVERSUPERLU_DIST">src/mat/impls/aij/mpi/superlu_dist/superlu_dist.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>


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