diff --git a/benchmark/Main.hs b/benchmark/Main.hs
index b113c82..05f1d3c 100644
--- a/benchmark/Main.hs
+++ b/benchmark/Main.hs
@@ -9,7 +9,18 @@ default (Int)
 main :: IO ()
 main = defaultMain [
   -- bgroup "Grid" [bench "init" $ nf (initGrid (0.0::Double) (0.0, 1.0)) 1001]
-  bgroup "Grid" [bench "init" $
-                 whnf (\np -> let g = initGrid (0.0::Double) (0.0, 1.0) np
-                              in energyGrid g) 1001]
+  bgroup "Grid" [ bench "init" $
+                  whnf (\np -> let g = initGrid (0.0::Double) (0.0, 1.0) np
+                               in energyGrid g) 1001
+                , bench "rhs" $
+                  whnf (\np -> let g = initGrid (0.0::Double) (0.0, 1.0) np
+                                   bs = bcGrid g
+                                   g' = rhsGrid bs g
+                               in energyGrid g') 1001
+                , bench "rk2" $
+                  whnf (\np -> let g = initGrid (0.0::Double) (0.0, 1.0) np
+                                   rhs x = rhsGrid (bcGrid x) x
+                                   step = rk2Grid 1.0e-8 rhs
+                                   g' = iterate step g !! 10
+                               in energyGrid g') 1001]
   ]