Opf of a new power grid

[Mirco Carciani]

Dear all
I'm new user of MatPower.
I would like to run the opf implemented in MatPower for my own grid.
In this case, do i have to recompute all Jacobian and hessian terms ?
Otherwise does Matpower do this by itself?
Thanks to all
Best regards.
Carciani Mirco.