[petsc-users] checking jacobian

[Gideon Simpson]

Maybe it’s a quirk of the macports installation of petsc, but nothing seems to be getting generated.

-gideon

> On Aug 11, 2015, at 1:40 PM, Jed Brown <jed at jedbrown.org> wrote:
> 
> Gideon Simpson <gideon.simpson at gmail.com> 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.

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