Index: /trunk/src/sandbox.py
===================================================================
--- /trunk/src/sandbox.py	(revision 126)
+++ /trunk/src/sandbox.py	(revision 127)
@@ -16,5 +16,12 @@
         name = name + key + '_' + str(eval('params_set.'+key)) + '_'
     return name
-                                   
+
+def check_name(sim_name):
+    if os.path.exists(sim_name+'running'):
+        return False
+    elif not os.path.exists(sim_name+'running'):
+        os.system('touch '+sim_name+'running')
+        return True
+
 def string_table(tablestring):
     """Convert a table written as a multi-line string into a dict of dicts."""