diff --git a/dpgen/generator/run.py b/dpgen/generator/run.py
index 69305229c..00f5e00af 100644
--- a/dpgen/generator/run.py
+++ b/dpgen/generator/run.py
@@ -3137,12 +3137,13 @@ def post_fp_vasp (iter_index,
                 else:
                     all_sys.append(_sys)
                 # save ele_temp, if any
-                with open(oo.replace('OUTCAR', 'job.json')) as fp:
-                    job_data = json.load(fp)
-                if 'ele_temp' in job_data:
-                    assert(use_ele_temp)
-                    ele_temp = job_data['ele_temp']
-                    all_te.append(ele_temp)
+                if(os.path.exists(oo.replace('OUTCAR', 'job.json')) ): 
+                    with open(oo.replace('OUTCAR', 'job.json')) as fp:
+                        job_data = json.load(fp)
+                    if 'ele_temp' in job_data:
+                        assert(use_ele_temp)
+                        ele_temp = job_data['ele_temp']
+                        all_te.append(ele_temp)
             else:
                 icount+=1
         all_te = np.array(all_te)
diff --git a/dpgen/simplify/simplify.py b/dpgen/simplify/simplify.py
index 9e8fc3632..66ac39ff8 100644
--- a/dpgen/simplify/simplify.py
+++ b/dpgen/simplify/simplify.py
@@ -315,14 +315,16 @@ def make_fp_configs(iter_index, jdata):
     create_path(work_path)
     picked_data_path = os.path.join(iter_name, model_devi_name, picked_data_name)
     systems = get_multi_system(picked_data_path, jdata)
+    ii = 0
     jj = 0
     for system in systems:
         for subsys in system:
-            task_name = "task." + fp_task_fmt % (0, jj)
+            task_name = "task." + fp_task_fmt % (ii, jj)
             task_path = os.path.join(work_path, task_name)
             create_path(task_path)
             subsys.to('vasp/poscar', os.path.join(task_path, 'POSCAR'))
             jj += 1
+        ii += 1
 
 
 def make_fp_gaussian(iter_index, jdata):