diff --git a/regression/multi_task.py b/regression/multi_task.py
index b592991261b..affaebac883 100644
--- a/regression/multi_task.py
+++ b/regression/multi_task.py
@@ -4,22 +4,46 @@
 import getopt
 from multiprocessing import Process, Pool
 import regression_config as rcfg
+import subprocess
 
-def run_case(name, simulator):
+def run_case(name, simulator, cfg):
   print('Run Case: %s' % name)
   vcs = 'make simv-run'
   emu = 'make emu_rtl-run'
+  simulation_prefix = cfg['config']['case_prefix']
   shell = ''
   if simulator == 'vcs':
-    shell = vcs + " RUN_BIN=" + name
+    shell = vcs + " RUN_BIN=" + simulation_prefix + name
   elif simulator == 'verilator':
-    shell = emu + " RUN_BIN=" + name
+    shell = emu + " RUN_BIN=" + simulation_prefix + name
   print(shell)
   os.system(shell)
 
+def run_case_timeout(name, simulator, cfg):
+  print('Run Case: %s' % name)
+  simulation_prefix = cfg['config']['case_prefix']
+  comp_dir = os.path.abspath('./') + '/sim/rtl/comp'
+  simv_dir = os.path.abspath('./') + '/sim/rtl/' + simulation_prefix + name
+  workload_dir = cfg['config']['workload']
+  create_simdir = 'mkdir -p ' + simv_dir
+  creat_simlog = 'touch ' + simv_dir + '/sim.log'
+  command_ln1 = 'ln -s ' + comp_dir + '/simv ' + simv_dir + '/simv'
+  command_ln2 = 'ln -s ' + comp_dir + '/simv.daidir ' + simv_dir + '/simv.daidir'
+  print(creat_simlog)
+  print(command_ln1)
+  print(command_ln2)
+  os.system(create_simdir + '&&' + creat_simlog + '&&' + command_ln1 + '&&' + command_ln2)
+  run_work_load = '+workload=' + workload_dir + simulation_prefix + name
+  run_diff = '+diff=' + workload_dir + 'riscv64-spike-so'
+  run_opts = '-fgp=num_threads:4,num_fsdb_threads:4,allow_less_cores'
+  run_assert = ['-assert', 'finish_maxfail=30', '-assert', 'global_finish_maxfail=10000', '2>', 'assert.log', '|', 'tee', 'sim.log']
+  try:
+    run_proc = subprocess.run(['./simv', run_work_load, run_diff, run_opts] + run_assert, cwd=simv_dir, timeout=10)
+  except subprocess.TimeoutExpired:
+    run_proc.kill()
+    run_proc.wait()
+
 def multi_task_run(task_num, cfg, case_file_list):
-  path = cfg['config']['case_abs_path']
-  case_prefix = cfg['config']['case_prefix']
   simulator = cfg['config']['simulator']
 
   test_case_list = rcfg.get_case_list('./regression', case_file_list)
@@ -30,8 +54,6 @@ def multi_task_run(task_num, cfg, case_file_list):
   for list_name in test_case_list.keys():
     case_list = test_case_list[list_name]
     for case in case_list:
-      case_name = case_prefix + '/' + case
-      print(case_name)
-      pool.apply_async(func = run_case, args = (case_name, simulator))
+      pool.apply_async(func = run_case_timeout, args = (case, simulator, cfg))
   pool.close()
   pool.join()
\ No newline at end of file
diff --git a/regression/record.py b/regression/record.py
index e6f4edbcd93..1fcfd21c355 100644
--- a/regression/record.py
+++ b/regression/record.py
@@ -26,35 +26,6 @@ def parse_sim_result(file_name):
 		return [file_name, "This case has not sim_file"]
 	return [file_name, "Unknown Error!!!!!!"]
 
-def result_record(file_name, case_list):
-	pass_list = []
-	fail_list = []
-	unknown_list = []
-	for case in case_list:
-		result = case[1]
-		if 'PASS' in result:
-			pass_list.append(case)
-		elif 'difftest Failed! Please debug it!' in result:
-			fail_list.append(case)
-		else:
-			unknown_list.append(case)
-	with open(file_name, 'a+') as f:
-		f.write('This regression passed %d cases:' % len(pass_list) + '\n')
-		for case in pass_list:
-			f.write(case[0] + "\t\t\t\t" + case[1] + '\n')
-		
-		f.write('\n\n\nThis regression failed %d cases:' % len(fail_list) + '\n')
-		for case in fail_list:
-			f.write(case[0] + "\t\t\t\t" + case[1] + '\n')
-		
-		f.write('\n\n\n%d cases had an unknown error:' % len(unknown_list) + '\n')
-		for case in unknown_list:
-			f.write(case[0] + "\t\t\t\t" + case[1] + '\n')
-
-		f.write('\n\n\nThis regression runs a total of %d cases\n' % len(case_list))
-		f.write('passing rate: %.2f' % (len(pass_list) / len(case_list)))
-		f.close()
-
 def res_analysis(cfg, test_list):
 	sim_prefix = ''
 	if cfg['config']['simulator'] == "verilator":
@@ -67,7 +38,7 @@ def res_analysis(cfg, test_list):
 	for list_name in test_case_list.keys():
 		case_list = test_case_list[list_name]
 		for case in case_list:
-			sim_name = sim_prefix + '/' + case
+			sim_name = sim_prefix + case
 			result = parse_sim_result(sim_name + '/sim.log')
 			results.append(result)
 	
@@ -94,6 +65,7 @@ def res_analysis(cfg, test_list):
 				f.write(case + '\n')
 			f.write("---------------------------------------------------------------------------------------------\n\n")
 		f.close()
+	return analysis_res
 
 def only_fault_link(cfg, test_list):
 	sim_prefix = ''
@@ -107,7 +79,7 @@ def only_fault_link(cfg, test_list):
 	for list_name in test_case_list.keys():
 		case_list = test_case_list[list_name]
 		for case in case_list:
-			sim_name = sim_prefix + '/' + case
+			sim_name = sim_prefix + case
 			result = parse_sim_result(sim_name + '/sim.log')
 			results.append(result)
 	
@@ -122,7 +94,7 @@ def only_fault_link(cfg, test_list):
 			analysis_res[res].append(keyword)
 
 	cfg_file = os.path.abspath("./regression/analysis_info.toml")
-	cfg = toml.load(cfg_file)
+	cfg_analysis = toml.load(cfg_file)
 	os.system('rm -rf ./only_failed/*')
 	for res_type in analysis_res.keys():
 		if res_type == 'Unknown Error!!!!!!' or res_type == 'difftest failed':
@@ -130,5 +102,5 @@ def only_fault_link(cfg, test_list):
 			for case in res_list:
 				bin_name = case.split('/')
 				print(bin_name[-2])
-				link = 'ln -s /home/simulation_path/' + bin_name[-2] +  ' /home/simulation_path/only_failed'
+				link = 'ln -s ' + os.path.abspath('./') + '/sim/rtl/' + cfg['config']['case_prefix'] + bin_name[-2] +  ' ' + os.path.abspath('./') + '/only_failed'
 				os.system(link)
\ No newline at end of file
diff --git a/regression/regression.py b/regression/regression.py
index 550ecf71006..9f1b3aba642 100644
--- a/regression/regression.py
+++ b/regression/regression.py
@@ -7,14 +7,7 @@
 import multi_task
 import record
 
-def parse_case_list(file_name):
-	with open(file_name, 'r') as f:
-		case_list = f.readlines()
-		return case_list
-	return []
-
 def main():
-	simulator = ""
 	cfg = rcfg.parse_config('./regression')
 	test_list = []
 	if cfg['config']['sim_mode'] == 'part':
@@ -23,10 +16,10 @@ def main():
 		test_list = cfg['case']['list']
 	print(test_list)
 	sim_num = cfg['config']['sim_num']
-	multi_task.multi_task_run(sim_num, cfg, test_list)
-	record.res_analysis(cfg, test_list)
+	#multi_task.multi_task_run(sim_num, cfg, test_list)
+	exec_res = record.res_analysis(cfg, test_list)
+	print(exec_res)
 	record.only_fault_link(cfg, test_list)
 
-
 if __name__ == '__main__':
 	main()
\ No newline at end of file
diff --git a/regression/regression_config.py b/regression/regression_config.py
index f560c09891a..3fe1e8014eb 100644
--- a/regression/regression_config.py
+++ b/regression/regression_config.py
@@ -4,30 +4,6 @@
 import sys
 from pprint import pprint
 
-
-'''
-
-  'case': { 'vector': {'list': ['valu',
-                                'vcompare',
-                                'vfix',
-                                'vfp',
-                                'vmac',
-                                'vmask',
-                                'vnarrow',
-                                'vpermutation',
-                                'vreduction',
-                                'vwiden'
-                                ]
-                      }
-          },
-  'config': { 'case_path': 'vcase',
-              'part_list': ['vmask', 'vpermutation'],
-              'sim_mode': 'part',
-              'simulator': 'verilator'
-            }
-
-'''
-
 def case_list_check(all_list, part_list):
   for part in part_list:
     if part not in all_list:
@@ -77,8 +53,4 @@ def get_case_list(path, test_list):
           case_list[test_name] = []
         line = line.replace('\n', '').replace('\r', '')
         case_list[test_name].append(line)
-  return case_list
-
-# test_list = parse_config()['config']['part_list']
-# list_out = get_case_list('./', test_list)
-# print(list_out)
\ No newline at end of file
+  return case_list
\ No newline at end of file