Having a Yescrypt GPU miner is a new step in the development of the BSTY coin. Thanks for this great news. we hope to get feedback from miners very soon. But this doesn't mean the end of the cpu mining. we are expecting to have a GPU average hashrate similar to the hash rate of a CPU (we still need to prove this). we cannot prevent GPU farms the same way we cannot prevent cpu farms. but something that we really need is to increase the hashrate to secure the network against malicious attacks. Any comment or feedback about this new GPU miner or the BSTY coin is welcome. 
Hello,
I just released the gpu miners for yescrypt:
for nvidia cards (compute 35 and higher): github/djm34/ccminer-tpsp
for amd cards : gihutb/djm34/sgminer
sgminer is still a work in progress, I am working on a new kernel
best setting so far for my 290x -w 32 --thread-concurrency 512 -I 9
It is difficult to go higher in intensity due to the high mem requirement. (also current speed is rather low... for the same reasons)
I just released the gpu miners for yescrypt:
for nvidia cards (compute 35 and higher): github/djm34/ccminer-tpsp
for amd cards : gihutb/djm34/sgminer
sgminer is still a work in progress, I am working on a new kernel
best setting so far for my 290x -w 32 --thread-concurrency 512 -I 9
It is difficult to go higher in intensity due to the high mem requirement. (also current speed is rather low... for the same reasons)