current groestlcoin performance on 3 GTX 780Ti (only mild overclock)
[2014-04-11 01:54:41] accepted: 111/111 (100.00%), 29119 khash/s (yay!!!)
[2014-04-11 01:54:46] accepted: 112/112 (100.00%), 29190 khash/s (yay!!!)
[2014-04-11 01:54:50] accepted: 113/113 (100.00%), 29117 khash/s (yay!!!)
[2014-04-11 01:54:54] accepted: 114/114 (100.00%), 29186 khash/s (yay!!!)
I am sure we can do better

Christian
I was wondering, wouldn't you be able to compile a module and have cudaminer/ccminer check to see if it is present, it uses your custom adaption of the algorithm, if not present uses the sph version. Wouldn't that satisfy gpl, since without the precompiled module it would still be fully functional? Example I have is gpl open source android kernel, that has precompiled drivers for prop hardware, etc. The precompiled module then could confirm that your software is what is calling it. Just a thought, instead of rewriting base code. A simple option would to offer as you do now a precompiled version and have a md5 checksum confirmation from your module.
Hmm this could be possible. You could even have it just include the file as it does with the required libs. Yes you would need to put the algorithm into the folder with ccminer but it could work. Again the issue is that some people may take it upon themselves to give it to the amd devs.
This is a very hard thing to overcome. But if i am honest,
Cpu-miner.c is not that large of a file to rebuild. Its finding a way to build it, optimize it, and make sure it is different enough to ensure it is not classed as a clone
While i am away from university i may dig into C++ some more and see what i can get done. I learn coding quickly aslong as i can see examples and figure out what things do. I may even attempt a full rewrite of cpu-miner :p
Hopes and dreams of someone who always wants more
@christian
That was fast :p from that i expect maybe 6mh/s for a 750ti? Right now i am getting around 3mh/s per card