Roc, please use a standard quoting style so that we can make sense of your replies. If you look at this thread, you can see that your replies repeatedly, actively destroy quoted context, and do not trim, so the message becomes unintelligible.
http://lists.mcs.anl.gov/pipermail/petsc-users/2013-November/019648.html The Krylov method is taking a very large number of iterations. Working on a better preconditioner is a better use of your time than micro-tuning Krylov parameters.
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