hmm..is that the value in cuda_groestlcoin.cu:
const int threadsperblock = 512;
? or do i need to change it somewhere else?
We will be looking into this ourselves. I don't really want to spoon feed code modifications to users here.
Feel free to modify yourself, but you HAVE to know CUDA and watch out for the shared memory initialization
at the start of the kernel code (don't run into this initialization code with more than 256 threads)
The next release will have the change, provided that it improves hash rates.
Christian