MATSOLVERPASTIX#
A solver package providing direct solvers (LU) for distributed and sequential matrices via the external package PaStiX. Use ./configure --download-pastix --download-ptscotch 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_threadnbr
- Set the number of threads for each MPI process
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