On Tue, May 31, 2011 at 01:31, Matthew Knepley <knepley at gmail.com> wrote:
> You generate a NaN somewhere. I usually check for this using norms, since > NaN propagate. Check the norm > of the rhs, initial solution, matrix, etc. > You can also run with -fp_trap, possibly in a debugger, and it should break at the first place the NaN was computed. This works better (on more platforms) with petsc-dev. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20110531/b7c4446d/attachment.htm>
