nonlinear solvers

Manav Bhatia bhatiamanav at
Mon Feb 12 17:26:33 CST 2007


   I am using the nonlinear solvers in Petsc. My application requires  
the jacobian at the final nonlinear solution, since after the  
nonlinear solution I solve a linear system of equations with the  
jacobian as the system matrix.
   I am curious to know if it is safe to assume that for all  
nonlinear solvers in Petsc, the last jacobian used before convergence  
is same as the jacobian evaluated at the final solution. If this is  
the case, then I will not need to evaluate the jacobian again,  
otherwise, I will need to compute it again after the final solution.

   Kindly help me with your comments.


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