Hi Matt: I tried "-ksp_converged_reason" you suggested. With "-ksp_monitor", it shows "due to CONVERGED_RTOL". Without "-ksp_monitor", it shows "due to CONVERGED_ITS".
------------------ $ mpiexec -np 1 -machinefile mach ./ibm -ksp_type richardson \ -pc_type hypre -pc_hypre_type boomeramg -ksp_monitor \ -ksp_converged_reason | grep Linear Linear solve converged due to CONVERGED_RTOL iterations 5 $ mpiexec -np 1 -machinefile mach ./ibm -ksp_type richardson \ -pc_type hypre -pc_hypre_type boomeramg \ -ksp_converged_reason | grep Linear Linear solve converged due to CONVERGED_ITS iterations 0 ------------------ Thanks, Shao-Ching On Tue, Nov 11, 2008 at 07:45:11PM -0600, Matthew Knepley wrote: > > Nothing should change. You can try -ksp_converged_reason to see why it > terminates. The best way is to put a breakpoint in KSPDefaultConverged() > and check the convergence test. > > Matt >
