Use -pc_type lu -pc_factor_mat_solver_type superlu_dist to use this direct solver
Works with AIJ matrices
| -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_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_statprint | - print factorization information |