thanks for sweeping the topic under the carpet ( sorry, moved to linux support here : http://forums.amd.com/game/messageview.cfm?catid=488&threadid=167216&forumid=11 )
But it is not only Linux issue, with Windows it is the same problem.
With 12.10 drivers it works (I have to disable optimizations - probable cause is AMD_BFI_INT) well,
with 13.8beta it returns incorrect GPU sum compared to CPU.
Full log is here:
You can try yourself ::
Windows + 13.x drivers + 7xxx card ?
oclvanitygen -v -i -d9 1Lostx
###select proper GPU
oclvanitygen -v -i -d0 1Lostx
###wait 15 seconds
As stated before "Please help me improve the long time bad driver reputation AMD always had." but I do not believe it much now, I am going short with AMD again