TSGetSNES

Returns the SNES (nonlinear solver) associated with a TS (timestepper) context. Valid only for nonlinear problems.

Synopsis

#include "petscts.h"  
PetscErrorCode TSGetSNES(TS ts, SNES *snes)

Not Collective, but snes is parallel if ts is parallel

Input Parameter

• ts - the TS context obtained from TSCreate()

Output Parameter

• snes - the nonlinear solver context

Notes

The user can then directly manipulate the SNES context to set various options, etc. Likewise, the user can then extract and manipulate the KSP, and PC contexts as well.

TSGetSNES() does not work for integrators that do not use SNES; in this case TSGetSNES() returns NULL in snes.

See Also

TS: Scalable ODE and DAE Solvers, TS, SNES, TSCreate(), TSSetUp(), TSSolve()

Level

beginner

Location

src/ts/interface/ts.c

Examples

src/ts/tutorials/ex14.c
src/ts/tutorials/ex47.c
src/ts/tutorials/ex52.c
src/ts/tutorials/ex22f.F90
src/ts/tutorials/ex7.c
src/ts/utils/dmplexlandau/tutorials/ex1f90.F90
src/ts/tutorials/ex15.c
src/ts/tutorials/ex22.c
src/ts/tutorials/ex27.c
src/ts/tutorials/ex17.c

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