On 08 Mar 2010 12:31:30 -0600, hxie at umn.edu wrote: > > I use left preconditioner. So the preconditioned residual should be less > than 10e-6||b||_2+10e^-10. How to print the final preconditioned residual > using the command line options? Or I will use -ksp_mpnitor to show all the > residuals. As I said in my last message, -ksp_monitor_true_residual Jed