MATSOLVERKLU#
“klu” - A matrix type providing direct solvers, LU, for sequential matrices via the external package KLU. ./configure –download-suitesparse to install PETSc to use KLU
Use -pc_type lu -pc_factor_mat_solver_type klu to use this direct solver
Consult KLU documentation for more information on the options database keys below.
Options Database Keys#
-mat_klu_pivot_tol <0.001> - Partial pivoting tolerance
-mat_klu_use_btf <1> - Use BTF preordering
-mat_klu_ordering
- KLU reordering scheme to reduce fill-in (choose one of) AMD COLAMD PETSC-mat_klu_row_scale
- Matrix row scaling (choose one of) NONE SUM MAX
Note: KLU is part of SuiteSparse http://faculty.cse.tamu.edu/davis/suitesparse.html
See Also#
PCLU
, MATSOLVERUMFPACK
, MATSOLVERCHOLMOD
, PCFactorSetMatSolverType()
, MatSolverType
Level#
beginner
Location#
src/mat/impls/aij/seq/klu/klu.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages