diff --git a/simulatorManager.py b/simulatorManager.py
index 9b7895b..5e374fa 100644
--- a/simulatorManager.py
+++ b/simulatorManager.py
@@ -34,7 +34,8 @@ if __name__=='__main__':
                 if proc.info['name'] == process_name and len(proc.info['cmdline']) > 1 and proc.info['cmdline'][1] == simulation_id:
                     process_exists = True
                     break
-            if not process_exists:
+            if not simulation_id in runnings: #process_exists:
+                runnings.append(simulation_id)
                 command = ['./SimulationCore2', redis_address,str(redis_port),redis_password,simulation_id,str(log_level),str(stepTime)]
                 print(command)
                 subprocess.Popen(command, cwd=work_dir)