diff --git a/_constraints b/_constraints
new file mode 100644
index 0000000..cba1d1b
--- /dev/null
+++ b/_constraints
@@ -0,0 +1,7 @@
+<constraints>
+	<hardware>
+		<memoryperjob>
+			<size unit="G">1</size>
+		</memoryperjob>
+	</hardware>
+</constraints>