modifying the tolerances of newton solver for implicit time scheme: relative tolerance is now 1e-8

dgpy/scripts/slim.py

@@ -815,7 +815,7 @@ class Loop:
                 equation._temporal_solver = dgpy.dgDIRK(equation._equation, equation._sys.dof_manager, 2)
                 equation._temporal_solver.getNewton().setVerb(10)
                 equation._temporal_solver.getNewton().setAtol(1e-8)
-                equation._temporal_solver.getNewton().setRtol(1e-4)
+                equation._temporal_solver.getNewton().setRtol(1e-8)
             elif equation._temporal_scheme == "multirate":
                 equation._temporal_solver = dgpy.dgMultirateERK(equation._domain._groups, equation._equation, dgpy.ERK_22_C)
                 equation._dt_mr = equation._temporal_solver.splitGroupsForMultirate(15, equation._solution, [equation._solution, equation._domain._bath])
@@ -853,7 +853,7 @@ class Loop:
                 equation._temporal_solver = dgpy.dgMDIRK(equation._equation, equation._sys_tracer1.dof_manager, equation._sys_tracer2.dof_manager, 2)
                 equation._temporal_solver.getNewton().setVerb(10)
                 equation._temporal_solver.getNewton().setAtol(1.e-8)
-                equation._temporal_solver.getNewton().setRtol(1e-4)
+                equation._temporal_solver.getNewton().setRtol(1e-8)
             else: 
                 dgpy.Msg.Fatal("Temporal scheme '"+equation._temporal_scheme+"' not implemented!")
             self._number_of_tracer += 1