On 21/01/2012, at 22:47 , mukesh tiwari wrote:

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  

The -fdph-par flag doesn't exist anymore, but we haven't had a chance to update the wiki yet. Use -package dph-lifted-vseg to select the backend. You could also look at the cabal file for the dph-examples package to see what flags we use when compiling.

Ben.