slim: make directory in parallel

dgpy/scripts/slimPre.py

@@ -946,8 +946,12 @@ def set_global_data_directory(path):
 
 def make_directory(data_dir):
     """Create data_dir directory if it does not exist yet"""
-    if not slim_private.path.isdir(data_dir) :
+    try:
         slim_private.makedirs(data_dir)
+    except:
+        pass
+    if not slim_private.path.isdir(data_dir) :
+        dgpy.Msg.Fatal("coult not create directory: %s" % data_dir)
     dgpy.Msg.Barrier()
     
 def partition_mesh(mesh_file_name, partitioned_mesh_file_name):