I made an optimized build with COPTFLAGS="-O0 -g" and FOPTFLAGS="-O0 -g". I will test it for the same simulation. -- Mehrdad -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20130320/4c44de10/attachment.html>