Gets the function that computes the Jacobian of G w.r.t. the parameters P where U_t = G(U,P,t), as well as the location to store the matrix.


#include "petscts.h"  
PetscErrorCode TSGetRHSJacobianP(TS ts, Mat *Amat, PetscErrorCode (**func)(TS, PetscReal, Vec, Mat, void *), void **ctx)

Logically Collective

Input Parameter#

Output Parameters#

  • Amat - JacobianP matrix

  • func - function

  • ctx - [optional] user-defined function context

Calling sequence of func#

PetscErrorCode func(TS ts, PetscReal t, Vec y, Mat A, void *ctx)
  • t - current timestep

  • U - input vector (current ODE solution)

  • A - output matrix

  • ctx - [optional] user-defined function context


Amat has the same number of rows and the same row parallel layout as u, Amat has the same number of columns and parallel layout as p

See Also#

TS: Scalable ODE and DAE Solvers, TSSetRHSJacobianP(), TS, TSGetRHSJacobianP()





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