#End of PETSc Option Table entries There is one unused database option. It is: Option left: name:-snes_check_jacobian_view (no value)
-gideon > On Aug 11, 2015, at 1:50 PM, Matthew Knepley <[email protected]> wrote: > > On Tue, Aug 11, 2015 at 12:49 PM, Gideon Simpson <[email protected] > <mailto:[email protected]>> wrote: > Maybe it’s a quirk of the macports installation of petsc, but nothing seems > to be getting generated. > > Run with -options_left. Is it reading the option? > > Matt > > -gideon > >> On Aug 11, 2015, at 1:40 PM, Jed Brown <[email protected] >> <mailto:[email protected]>> wrote: >> >> Gideon Simpson <[email protected] <mailto:[email protected]>> >> writes: >> >>> I’m a bit confused by the following options: >>> >>> Run with -snes_check_jacobian_view [viewer][:filename][:format] to show >>> difference of hand-coded and finite difference Jacobian. >>> >>> What flags do I pass it to get some output to diagnose my Jacobian error? >> >> Nothing to display ASCII to the screen. You might use >> "binary:thematrix" if you want to read it in with Python or MATLAB, for >> example. > > > > > -- > What most experimenters take for granted before they begin their experiments > is infinitely more interesting than any results to which their experiments > lead. > -- Norbert Wiener
