Gpupi is kinda hwbot fail. A lot of cpus and graphics cards are not recognized by database and you can get error saying that for submission there is required cpu/gpu. For now I think that screenshots are allowed ( at least mod who introduced this bench unlocked that option because of possible issues ).
Next thing is hardware support. Many older graphics cards with CUDA functionality are not supported for some reason. Many AMD cards are not supported too. Intel HD Graphics are sometimes working, sometimes not ( not recognized or fail the test ).
200 series Nvidia cards were working in 1.4 version, in 2.0 are not working but there will be a patch in 2.1 version.
AMD HD5700 - not supported, HD5800 - supported but fail the online submission.
Quadro with CUDA - not supported
There are more issues, not to mention benchmark consistency so I have no idea why hwbot added it to the official benchmark list with global/wr points. They could at least introduce it after proper tests. I won't be surprised if they start to block submissions soon.