petsc-3.9.4 2018-09-11
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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
-mat_pastix_threadnbr <integer> - Set the thread number by MPI task.

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

PCFactorSetMatSolverType(), MatSolverType




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