TSSetRHSJacobian#
Sets the function to compute the Jacobian of G, where U_t = G(U,t), as well as the location to store the matrix.
Synopsis#
#include "petscts.h"
PetscErrorCode TSSetRHSJacobian(TS ts, Mat Amat, Mat Pmat, TSRHSJacobianFn *f, void *ctx)
Logically Collective
Input Parameters#
Amat - (approximate) location to store Jacobian matrix entries computed by
f
Pmat - matrix from which preconditioner is to be constructed (usually the same as
Amat
)f - the Jacobian evaluation routine
ctx - [optional] user-defined context for private data for the Jacobian evaluation routine (may be
NULL
)
Notes#
You must set all the diagonal entries of the matrices, if they are zero you must still set them with a zero value
The TS
solver may modify the nonzero structure and the entries of the matrices Amat
and Pmat
between the calls to f()
You should not assume the values are the same in the next call to f() as you set them in the previous call.
See Also#
TS: Scalable ODE and DAE Solvers, TS
, TSRHSJacobianFn
, SNESComputeJacobianDefaultColor()
,
TSSetRHSFunction()
, TSRHSJacobianSetReuse()
, TSSetIJacobian()
, TSRHSFunctionFn
, TSIFunctionFn
Level#
beginner
Location#
Examples#
src/ts/tutorials/ex20adj.c
src/ts/tutorials/ex1f.F90
src/ts/tutorials/extchemfield.c
src/ts/tutorials/ex20td.c
src/ts/tutorials/ex31.c
src/ts/tutorials/ex2.c
src/ts/tutorials/ex5.c
src/ts/tutorials/ex6.c
src/ts/tutorials/extchem.c
src/ts/tutorials/ex20opt_p.c
Index of all TS routines
Table of Contents for all manual pages
Index of all manual pages