Reading through this thread for the first time, I only saw your announcement on the ZCoin subreddit earlier. A polite request though, with all due respect please stop the bs hints about ripping your kernels, I haven't even downloaded your miner, even less so tried to dump your kernels. I was just as surprised as you were about the weird coincidence that two very similar AMD lyra2z-related announcements were made within a friggin' day after months of silence. Furthermore, I don't know when you published on github, but otherwise all your announcements that I've seen were written after(!) my post here. It's a bit of a stretch that I somehow would have found your miner before your first announcement, ripped the kernels, massaged them into a Windows sgminer and made a wild announcement myself, like you wouldn't be able to release the same packaging yourself at some point .

As stated, my implementation was written bottom up in pure GCN ASM (well, not the Blake part) and has been running on Windows rigs for a number of months. No ROCm dependencies. We probably made the same analysis, that lyra2z was very far from well understood and a very good fit for what an AMD GCN CU can do with DPP ops. Your miner def has had me become less interested in releasing it public though, I'd rather keep the extra ~15% edge I seem to have for now.

Cheers, K

Guys, one miner is running on Linux, the other one on windows. If AMD mining community could use BOTH, it would just be perfect.

Is there restrictions to mining cards per rig? I thought I heard it is for 1 or max 2 gpu's?

And one more vote for windows miner.

I agree: I appreciate what you are doing for the community. A competitive miner with a dev fee somewhat reasonable is a win win situation. Thanks for both of you.

I didn't even know that setting existed.  Setting changed, fire away .

Also interested in a working out of a box version to test this miner.

There is a limit on how many GPUs are supported in ROCm. It has something to do with PCI atomics and is pretty much hardware based.
Any way we could use AMDGPU Pro drivers for Vegas with your miner in the future?

around 0.5 mhs

Thanks for posting your results.  It's nice to have some confirmation that the kernels scale well on RX 470 GPUs.  The GPU kernels should scale relatively linearly with the number of CU and core clock speed.  They should not be affected very much by memory speed.


The hash rates should be the same for both.  The GPU kernels do not use very much memory, and they only use it for intermediate state, so memory capacity and clock should have little impact.


Thanks principino!  It will be nice to have some feedback on how the miner runs with more than a couple GPUs at a time.  I look forward to your results!


The 0.5Mh/s number is about what I remember getting on sgminer the last time I ran it.  I think with some tuning you can get to around 1.5 Mh/s on a Vega 64.

As for switching over your stable rigs to this miner, please keep in mind that this is still a beta release.  I do not promise that it will be stable on all hardware.  I've done my best to test it for stability on the hardware I have and so far I have not received any reports of instability, but I've only received feedback from a handful of people.  I would suggest slowly switching your rigs over one at a time, making sure that they are stable along the way.  I don't want to ruin anybody's profits because of potential bugs in the miner.  Also remember to check your GPU temperatures as the miner does not check them, and will continue mining even if they exceed safe limits.

hello todxx
I read from your first post that to adopt your miner under windows would require about one month, but it is not clear will you do that?!
yes, this is time consuming deal, but the number of miners who use windows is about ten times more then people using linux..
so it should be very profitable for as a developer, cause more miner = more developer fee...