On Tue, 8 Oct 2013, David Knezevic wrote:

> It wasn't a segfault actually. The solver was crashing, reporting that there 
> was a NaN in the matrix.
>
> I reverted to e1167380e6872c6dbf2e487d4908be192caa21e3 and it still didn't 
> work. Then I reverted to 99edb484698f647358c539df5a229503147bcdfd and it 
> worked again.
>
> I'll continue with the binary search...

Hmm... not sure a binary search is going to be helpful here.  This
change required a major refactor, and then lots of the subsequent
changes are small bugfixes in that.

Testing feature by feature might help.  I assume your failure case
uses AMR and/or Dirichlet BCs?  Does it fail in serial?  If you print
the dof constraints for a working case vs the branch head, are there
differences?
---
Roy

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