petsc-dev 2014-04-16
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SNESCreate

Creates a nonlinear solver context.

Synopsis

#include "petscsnes.h"  
PetscErrorCode  SNESCreate(MPI_Comm comm,SNES *outsnes)
Collective on MPI_Comm

Input Parameters

comm -MPI communicator

Output Parameter

outsnes -the new SNES context

Options Database Keys

-snes_mf - Activates default matrix-free Jacobian-vector products, and no preconditioning matrix
-snes_mf_operator - Activates default matrix-free Jacobian-vector products, and a user-provided preconditioning matrix as set by SNESSetJacobian()
-snes_fd - Uses (slow!) finite differences to compute Jacobian

Keywords

SNES, nonlinear, create, context

See Also

SNESSolve(), SNESDestroy(), SNES, SNESSetLagPreconditioner()

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

Examples

src/snes/examples/tutorials/ex1.c.html
src/snes/examples/tutorials/ex2.c.html
src/snes/examples/tutorials/ex3.c.html
src/snes/examples/tutorials/ex5.c.html
src/snes/examples/tutorials/ex5s.c.html
src/snes/examples/tutorials/ex7.c.html
src/snes/examples/tutorials/ex12.c.html
src/snes/examples/tutorials/ex14.c.html
src/snes/examples/tutorials/ex15.c.html
src/snes/examples/tutorials/ex18.c.html
src/snes/examples/tutorials/ex19.c.html