MATSOLVERPASTIX#
A solver package providing direct solvers (LU) for distributed and sequential matrices via the external package PaStiX. Use ./configure --download-hwloc --download-metis --download-ptscotch --download-pastix --download-netlib-lapack [or MKL for ex. --with-blaslapack-dir=${MKLROOT}]
to have PETSc installed with PasTiX.
Use -pc_type lu
-pc_factor_mat_solver_type pastix
to use this direct solver.
Options Database Keys#
-mat_pastix_verbose <0,1,2> - print level of information messages from PaStiX
-mat_pastix_factorization <0,1,2,3,4> - Factorization algorithm (Cholesky, LDL^t, LU, LL^t, LDL^h)
-mat_pastix_itermax
Notes#
This only works for matrices with symmetric nonzero structure, if you pass it a matrix with nonsymmetric structure PasTiX, and hence, PETSc return with an error.
See Also#
Matrices, Mat
, PCFactorSetMatSolverType()
, MatSolverType
, MatGetFactor()
Level#
beginner
Location#
src/mat/impls/aij/mpi/pastix/pastix.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages