<div class="gmail_extra">I already did it by changing level of fill of PC of KSP, but I received the following error:<br><br>[0]PETSC ERROR: --------------------- Error Message ------------------------------------<br>[0]PETSC ERROR: Object is in wrong state!<br>
[0]PETSC ERROR: Cannot change levels after use!<br>[0]PETSC ERROR: ------------------------------------------------------------------------<br><br></div>