SNESSolve#

Solves a nonlinear system F(x) = b.

Synopsis#

#include "petscsnes.h"  
PetscErrorCode SNESSolve(SNES snes, Vec b, Vec x)

Collective

Input Parameters#

  • snes - the SNES context

  • b - the constant part of the equation F(x) = b, or NULL to use zero.

  • x - the solution vector.

Note#

The user should initialize the vector, x, with the initial guess for the nonlinear solve prior to calling SNESSolve() or use SNESSetInitialSolution(). In particular, to employ an initial guess of zero, the user should explicitly set this vector to zero by calling VecSet().

See Also#

SNES: Nonlinear Solvers, SNES, SNESCreate(), SNESDestroy(), SNESSetFunction(), SNESSetJacobian(), SNESSetGridSequence(), SNESGetSolution(), SNESNewtonTRSetPreCheck(), SNESNewtonTRGetPreCheck(), SNESNewtonTRSetPostCheck(), SNESNewtonTRGetPostCheck(), SNESLineSearchSetPostCheck(), SNESLineSearchGetPostCheck(), SNESLineSearchSetPreCheck(), SNESLineSearchGetPreCheck(), SNESSetInitialSolution()

Level#

beginner

Location#

src/snes/interface/snes.c

Examples#

src/snes/tutorials/ex1.c
src/snes/tutorials/ex19.c
src/snes/tutorials/ex3.c
src/snes/tutorials/ex59.c
src/snes/tutorials/ex17.c
src/snes/tutorials/ex21.c
src/snes/tutorials/ex15.c
src/tao/tutorials/ex1.c
src/tao/tutorials/ex2.c
src/snes/tutorials/ex5.c

Implementations#

SNESSolve_Composite() in src/snes/impls/composite/snescomposite.c
SNESSolve_FAS() in src/snes/impls/fas/fas.c
SNESSolve_NGS() in src/snes/impls/gs/snesgs.c
SNESSolve_KSPONLY() in src/snes/impls/ksponly/ksponly.c
SNESSolve_NEWTONLS() in src/snes/impls/ls/ls.c
SNESSolve_MS() in src/snes/impls/ms/ms.c
SNESSolve_Multiblock() in src/snes/impls/multiblock/multiblock.c
SNESSolve_NASM() in src/snes/impls/nasm/nasm.c
SNESSolve_NCG() in src/snes/impls/ncg/snesncg.c
SNESSolve_Anderson() in src/snes/impls/ngmres/anderson.c
SNESSolve_NGMRES() in src/snes/impls/ngmres/snesngmres.c
SNESSolve_NEWTONTRDC() in src/snes/impls/ntrdc/ntrdc.c
SNESSolve_Patch() in src/snes/impls/patch/snespatch.c
SNESSolve_QN() in src/snes/impls/qn/qn.c
SNESSolve_NRichardson() in src/snes/impls/richardson/snesrichardson.c
SNESSolve_Shell() in src/snes/impls/shell/snesshell.c
SNESSolve_NEWTONTR() in src/snes/impls/tr/tr.c
SNESSolve_VINEWTONRSLS() in src/snes/impls/vi/rs/virs.c
SNESSolve_VINEWTONSSLS() in src/snes/impls/vi/ss/viss.c


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