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#

Matrices, Mat, PCLU, MATSOLVERUMFPACK, MATSOLVERCHOLMOD, PCFactorSetMatSolverType(), MatSolverType

Level#

beginner

Location#

src/mat/impls/aij/seq/klu/klu.c

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