SUPERLU
Usage:
-mat_type superlu -ksp_type preonly -pc_type lu.
seqaij matrix type
Options:
-mat_superlu_ordering <0,1,2,3>
0: natural ordering
1: MMD applied to A'*A
2: MMD applied to A'+A
3: COLAMD, approximate minimum degree column ordering-mat_superlu_iterrefine
have SuperLU do iterative refinement after the triangular solve choices:
NOREFINE (default)
SINGLE
DOUBLE
EXTRA-mat_superlu_printstat
print SuperLU statistics about the factorization