Nonlinear Solvers (SNES)#
The Scalable Nonlinear Equations Solvers (
SNES) component provides an
easy-to-use interface to Newton-type, quasi-Newton, full approximation scheme (FAS) multigrid, and other methods for solving systems of
nonlinear equations. User guide chapter: SNES: Nonlinear Solvers.
SNES internally employs
KSP for the solution of its linear systems.
SNES users can also set
KSP options directly in application
codes by first extracting the
KSP context from the
SNES context via
and then directly calling various