Sometimes finding incorrect hashes on a Mac about git-vanity

[tochev]

Thanks for reporting the problem and for the detailed information.

The good news is that I am able to reproduce the bug on a Sierra 10.12.6 MacBook Air 13 (Late 2010). Using the GPU (GeForce 320M) produces wrong results with any prefix, while using the CPU (Core2 Duo L9600) produces correct results (so far).

Unfortunately, at the moment I don't have a lot of free time and I will have to borrow the hardware in order to be able to debug the problem, but I hope to be able to work on it during this weekend and/or the weekend after. :)

[lukebatchelor]

Oh wow, that would be awesome, thank you!

[tochev]

@lukebatchelor I seem to have fixed it for the Air in 6a0bbdf .

I would like to run more tests, but the GeForce 320M does only about 3 MHash/s. I will continue with the tests next weekend.

For some reason on the Air's GPU it behaves in a mind boggling way, not that I'm an OpenCL guru (and I have used it almost exclusively on AMD), but some of the behaviour is outright bizarre.
I'll wait on merging it in the master for now. I'm considering rewriting the whole OpenCl code, but I'll probably not have the time.

It would be great if you could confirm that this works with your setup :)