[petsc-users] SNES convergence issue

[Tian(ICT)]

For the SNES solver, the option -mat_view printed out 12 matrices for 4 Newton iterations in a single load step. What these matrices are? I found some are not boundary treated and the rest are. For the formers,
they are of course signular. Does this have something to do with the bad convergence issue?

Rong
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20110516/dae12805/attachment.htm>