petsc-3.14.6 2021-03-30

TSSetIJacobianP

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

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

Logically Collective on TS

	ts	- TS context obtained from TSCreate()
	Amat	- JacobianP matrix
	func	- function
	ctx	- [optional] user-defined function context

func (TS ts,PetscReal t,Vec y,Mat A,void *ctx);

	t	- current timestep
	U	- input vector (current ODE solution)
	Udot	- time derivative of state vector
	shift	- shift to apply, see note below
	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

intermediate