petsc-3.5.1 2014-07-24
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SNESNCG

Nonlinear Conjugate-Gradient method for the solution of general nonlinear systems.

Options Database

-snes_ncg_type <fr, prp, dy, hs, cd> - Choice of conjugate-gradient update parameter.
-snes_linesearch_type <cp,l2,basic> - Line search type.
-snes_ncg_monitor - Print relevant information about the ncg iteration.

Notes: This solves the nonlinear system of equations F(x) = 0 using the nonlinear generalization of the conjugate gradient method. This may be used with a nonlinear preconditioner used to pick the new search directions, but otherwise chooses the initial search direction as F(x) for the initial guess x.

See Also

SNESCreate(), SNES, SNESSetType(), SNESNEWTONLS, SNESNEWTONTR, SNESNGMRES, SNESNQN

Level:beginner
Location:
src/snes/impls/ncg/snesncg.c
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages