> On Mon, Dec 9, 2013 at 11:31 AM, Lorenzo Zanon > <za...@aices.rwth-aachen.de>wrote: > >> I get faster convergence with e.g. -snes_linesearch_type basic -ksp_rtol >> 1e-4: >> >> NL step 0, |residual|_2 = 3.464102e-05 >> NL step 1, |residual|_2 = 2.417540e-04 >> NL step 2, |residual|_2 = 6.174706e-08 >> NL step 3, |residual|_2 = 3.577768e-12 >> NL step 4, |residual|_2 = 7.687278e-17 >> StVen system solved at nonlinear iteration 4 , final nonlinear residual >> norm: 7.687278e-17
Your ksp_rtol might be hurting your convergence a bit near the root... Have you tried -snes_ksp_ew? There are several EW-specific options within you can play with as well: http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/SNES/SNESSetFromOptions.html -- John ------------------------------------------------------------------------------ Sponsored by Intel(R) XDK Develop, test and display web and hybrid apps with a single code base. Download it for free now! http://pubads.g.doubleclick.net/gampad/clk?id=111408631&iu=/4140/ostg.clktrk _______________________________________________ Libmesh-users mailing list Libmesh-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-users
