Nonlinear solvers - SNES Manual Pages#

Examples

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. SNES users can set various algorithmic options at runtime via the options database (e.g., specifying a trust region method via -snes_type newtontr).

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 SNESGetKSP() and then directly calling various KSP (and PC) routines (e.g., PCSetType() ). Manual Pages Table of Contents

Manual Pages by Level#

Beginner - Basic usage#

Intermediate - Setting options for algorithms and data structures#

Advanced - Setting more advanced options and customization#

Developer - Interfaces intended primarily for library developers, not for typical applications programmers#

No deprecated routines#

Single list of manual pages#