So wait.  Forgive me i'm not used to solo mining...


But are you saying my one 670 that's saying "accepted 37/38" has dug up 38 blocks?

So i broke something.  Hopefully someone can enlighten me to where my problem lies (other than in the chair)

Please keep in mind i make no claim to knowing what the hell i'm doing, but only one way to learn, right?

2 670 GTXs, not in sli, sep .bat files for each, x64 cudaminer


  On VTC, K7x32 was producing ~133kh per card.  After tinkering with some different kernals received cuda error 30 and display driver crashed.   Rebooted and went back to K7x32 but that now produced cuda error 30 and a crash.  Reinstalled cuda and vid drivers and was able to use K7x32 with same results (133/per).  Once again tinkered with different kernals (using WHQL driver instead of beta this time to see if there was any difference) and received cuda error 30 etc etc but this time a cuda/driver reinstall didn't fix issue.

Currently running K7x20 with 155kh on one card and 135 on the other atm, but what did i break exactly and how?   

Actually, it's funny you mention that.  If i try to run Y7x32, it fails horribly aand crashes the driver

            switch (kernelid)
            {
                case 'T': case 'Z': *kernel = new NV2Kernel(); break;
                case 't':           *kernel = new TitanKernel(); break;
                case 'K': case 'Y': *kernel = new NVKernel(); break;
                case 'k':           *kernel = new KeplerKernel(); break;
                case 'F': case 'L': *kernel = new FermiKernel(); break;
                case 'f': case 'X': *kernel = new TestKernel(); break;
                case ' ': // choose based on device architecture
                    *kernel = Best_Kernel_Heuristics(props);
                break;

1024 would get me ~280 with best results from Y14x20
2048 it's ~133 with the best results from K7x32

either way, this is surprising. There should not be much of a difference between N=1024 and N=2048 scrypt coins, really. At high N the low register count kernels have a significant advantage - they reach higher occupancy under tight memory constraints. And they can do a lookup gap without running into much register pressure. But N=2048 isn't high...

Christian