MATSOLVERCHOLMOD
"cholmod" - A matrix type providing direct solvers (Cholesky) for sequential matrices via the external package CHOLMOD. ./configure --download-cholmod to install PETSc to use CHOLMOD
Consult CHOLMOD documentation for more information about the Common parameters
which correspond to the options database keys below.
Options Database Keys
-mat_cholmod_dbound <0>: Minimum absolute value of diagonal entries of D (None)
-mat_cholmod_grow0 <1.2>: Global growth ratio when factors are modified (None)
-mat_cholmod_grow1 <1.2>: Column growth ratio when factors are modified (None)
-mat_cholmod_grow2 <5>: Affine column growth constant when factors are modified (None)
-mat_cholmod_maxrank <8>: Max rank of update, larger values are faster but use more memory [2,4,8] (None)
-mat_cholmod_factor <AUTO> (choose one of) SIMPLICIAL AUTO SUPERNODAL
-mat_cholmod_supernodal_switch <40>: flop/nnz_L threshold for switching to supernodal factorization (None)
-mat_cholmod_final_asis: <TRUE> Leave factors "as is" (None)
-mat_cholmod_final_pack: <TRUE> Pack the columns when finished (use FALSE if the factors will be updated later) (None)
-mat_cholmod_zrelax <0.8>: 3 real supernodal relaxed amalgamation parameters (None)
-mat_cholmod_nrelax <4>: 3 size_t supernodal relaxed amalgamation parameters (None)
-mat_cholmod_prefer_upper: <TRUE> Work with upper triangular form (faster when using fill-reducing ordering, slower in natural ordering) (None)
-mat_cholmod_print <3>: Verbosity level (None)
See Also
PCCHOLESKY, PCFactorSetMatSolverPackage(), MatSolverPackage
Level:beginner
Location:src/mat/impls/sbaij/seq/cholmod/sbaijcholmod.c
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Index of all manual pages