use scf_os_stop to control esovler

Author: WHUweiqingzhou

source/module_esolver/esolver_ks.cpp

@@ -532,7 +532,10 @@ void ESolver_KS<T, Device>::runner(const int istep, UnitCell& ucell)
                 this->p_chgmix->mixing_restart_step = iter + 1;
             }
 
-            this->oscillate_esolver = this->p_chgmix->if_scf_oscillate(iter, drho, PARAM.inp.scf_os_ndim, PARAM.inp.scf_thr_os);
+            if (PARAM.inp.scf_os_stop) // if oscillation is detected, SCF will stop
+            {
+                this->oscillate_esolver = this->p_chgmix->if_scf_oscillate(iter, drho, PARAM.inp.scf_os_ndim, PARAM.inp.scf_thr_os);
+            }
 
             // drho will be 0 at this->p_chgmix->mixing_restart step, which is
             // not ground state