ok, I have released the source of the x15 ccminer.
It can be found here:
https://github.com/djm34/ccminercompilation on windows takes forever (sorry for that).
It should compile on linux (I fixed the Makefile.am), if anything is missing let me know...
To run x15 "ccminer -a x15"
as previously said, it is far from perfect (gpu usage rather low around 80%, so there are room for optimisation... and exceptionally the 780ti runs at 74°C).
I get at the moment (started on the previous compilation):
1467MHash/s for the 750ti
2900MHash/s for the 780ti (on supernova...)
which repository did you use as base? the official one, or the one from tsiv with cryptonight? anyway, thanks for you work, I'll test it when I have time (if it compiles on my ubuntu os ^^)