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

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Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages