On 15 May 2013 16:18, Nico Schlömer <[email protected]> wrote: > Also: Is there a way to extract the number of performed Newton iterations? >
Not from the high-level interface. If you use the NewtonSolver class directly, the solve function returns the number of iterations. Garth > --Nico > > > On Wed, May 15, 2013 at 5:02 PM, Nico Schlömer <[email protected]> > wrote: >> >> Hi, >> >> two brief question about the nonlinear solver interface, >> >> solve(F == 0, u) >> >> * How to specify an intial guess? Is the value used that's found in u? >> * In the output, >> >> Newton iteration 1: r (abs) = 3.402e-01 (tol = 1.000e-10) r (rel) = >> 1.040e+00 (tol = 1.000e-09) >> >> is it correct that r(rel) = F(x)/F(x0)? >> >> --Nico > > > > _______________________________________________ > fenics-support mailing list > [email protected] > http://fenicsproject.org/mailman/listinfo/fenics-support > _______________________________________________ fenics-support mailing list [email protected] http://fenicsproject.org/mailman/listinfo/fenics-support
