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control_options_solver_petsc_pctype index pctype

With this record you can set the Preconditioner type for the PETSc solver. Possibilities are: -jacobi, -bjacobi, -sor, -eisenstat, -icc, -ilu, -asm, -sles and -lu. Especially the -lu is noteworthy, since it is a complete LU factorisation so that it activatives a direct solver (sparse, profile).

tochnog 2001-09-02