Update arch.py

Author: tanner-andrulis

pytimeloop/timeloopfe/v4/arch.py

@@ -522,8 +522,8 @@ def declare_attrs(cls, *args, **kwargs):
         super().add_attr("n_banks", (str, int), 2)
         super().add_attr("block_size", (str, int), None)
         super().add_attr("cluster_size", (str, int), 1)
-        super().add_attr("width", (str, int), None)
-        super().add_attr("depth", (str, int), None)
+        super().add_attr("width", (str, int))
+        super().add_attr("depth", (str, int))
         super().add_attr("entries", (str, int), None)
         super().add_attr("sizeKB", (str, int), None)
         super().add_attr("reduction_supported", (str, bool), True)