[Haskell-cafe] ghc 7.2.1 and super simple DPH

Hi - I'm trying to compile DotP.hs from http://www.haskell.org/haskellwiki/GHC/Data_Parallel_Haskell#A_simple_exampl... (see below) The compiler complains and says (twice in fact): DotP.hs:17:33: Not in scope: `fromPArrayP' Could someone help me out please? Thanks a lot! Peter {-# LANGUAGE ParallelArrays #-}{-# OPTIONS_GHC -fvectorise #-} module DotP (dotp_wrapper)where import qualified Preludeimport Data.Array.Parallel.Preludeimport Data.Array.Parallel.Prelude.Double dotp_double :: [:Double:] -> [:Double:] -> Double dotp_double xs ys = sumP [:x * y | x <- xs | y <- ys:] dotp_wrapper :: PArray Double -> PArray Double -> Double{-# NOINLINE dotp_wrapper #-} dotp_wrapper v w = dotp_double (fromPArrayP v) (fromPArrayP w)