Hello all 
I have installed ghc-7.4.0.20111219  and this announcement says that "The release candidate accidentally includes the random, primitive, vector and dph libraries. The final release will not include them". I tried to compile  a program 

[ntro@localhost src]$ ghc-7.4.0.20111219 -c -Odph -fdph-par ParallelMat.hs 
ghc: unrecognised flags: -fdph-par
Usage: For basic information, try the `--help' option.
[ntro@localhost src]$ ghc-7.2.1 -c -Odph -fdph-par ParallelMat.hs  

Also in   ghc-7.4.0.20111219 --help , i don't see any option related data parallel haskell.  I  search the ghc manual  and got one reference for data parallel haskell. This link again redirects to data parallel haskell  wiki page using ghc-7.2.1. Could some one please tell  me how to compile haskell program using dph with ghc-7.4.0.20111219. 

Regards 
Mukesh Tiwari