updated pres

presentations/pasc/pres.md

@@ -337,6 +337,7 @@ tabulate_4d nx ny nz q (\x y z ipop ->
 ## What is great with Futhark? (IMHO)
 
 * Runs fast.
+* Multiple backends.
 * Great for rapid prototyping.
 * Simple (limited functionalities) but powerful (generics, modules).
 * Very difficult to make memory errors.