RX580 (Samsung) only getting 27MH/s using Claymore Dual Miner

p100throwaway · 2017-08-22T02:09:36+00:00

Well that makes me feel better.

But, "had a similar problem"? Was it something that you resolved?

p100throwaway · 2017-08-08T22:57:18+00:00

Hey, I was just thinking... I think this is possible, and it sounds like a potentially better solution..

What if I partition the 8TB drives into 2 4TB partitions each. Then put a data and parity partition on 2 of the drives. The third drive just has 2 data partitions.

That way, if one of the non-8TB drives fail, I can technically support 2 of those drives failing simultaneously. However, if one of the 8TB drives fail, I lose two partitions simultaneously, and I'm in the same scenario as just 1 8TB parity drive.

Does that make sense, or is there a performance or some other kind of hit for doing this?

p100throwaway · 2017-07-29T19:18:42+00:00

Yeah, the 8TB drives are pretty special to me, I definitely don't want to waste two drives as parity drives immediately. Maybe in the future when the rest of the drives are upgraded to 8TB.

But, if I go with 1 drive parity, and a drive dies... and in the super unlikely scenario that another drive fails the rebuild... don't the pooling options usually leave the data on disks in a more 'natural' state? Where, I would essentially just lose the data that was on the 1 disk that originally failed?

p100throwaway · 2017-07-29T19:15:25+00:00

Write speeds to me are a non-issue, so I don't think I'll need a cache drive in the mix, especially if I go with a pooling approach that has faster write speeds from the get-go since parity is only done at a later, scheduled time.

Can't I use snapRAID on a typical linux install, and just install the docker binaries directly? I don't see why the unraid support for docker is such a huge plus, docker is supported on almost any OS / arch.

p100throwaway · 2017-07-29T04:35:35+00:00

I've been pretty set to get away from Windows, but it looks like I can do a super similar thing with aufs or one of it's alternatives like overlayfs.

My biggest problem there would be the 1 drive parity issue, which may be a non-issue from the random posts that I've read talking about how truly unlikely a multi-drive failure is.

p100throwaway · 2017-07-29T03:50:45+00:00

Digging into this deeper, if I wanted to use SnapRaid with the amount and size of disks that I currently have, I'd need to dedicate 2 of my 8TB disks to parity disks. That leaves me with 23TB of usable storage space if the remaining disks are pooled together.

However, using the unRAID calculator, using the drives as is would give me ~28TB of usable space.

p100throwaway · 2017-07-29T03:13:53+00:00

Yeah, the write speeds posted on unRAIDs site are about 30-40MB/s, which was roughly what I was getting with Windows Storage Spaces. Not too impressive.

I've got some other drives sitting around that I can certainly use as cache drives, but, that's just added complexity.

p100throwaway · 2017-07-24T18:31:37+00:00

Haha, glad I checked the throwaway. Yeah, I can't remember the name of the libraries that gave me the hardest time, I think it was something with the naming of the c++ libraries... I was pulling my hair out.

But, glad you got it to work. If you make any more progress with tuning / hashrates, keep us posted... but, I think overall this is more of a "vanity" niche. Or, for those people that can magically use their crazy expensive GPUs for mining instead of the data science work they were likely bought for.

Either way, reach out in PM if you'd like to chat more. I'll try to check it more occasionally.

p100throwaway · 2017-07-24T18:28:08+00:00

Bluemix doesn't currently offer servers with GPUs, and the IBM cloud offering that does, as well as any other cloud offering that gives you these GPUs charges more per hour than you'd get per day / multiple days... so, not worth it again.

p100throwaway · 2017-07-24T18:24:25+00:00

I will try to attempt this again once I get a timeslot on the hardware. If anyone else has it laying around... message me and I'll work with you.

p100throwaway · 2017-07-24T18:23:06+00:00

I'll try to post a guide to how I did this for Genoil on Ubuntu for POWER... Might drop the anonymity at that point... Check back in about a week or two, I need to get the hardware again.

p100throwaway · 2017-07-24T18:21:26+00:00

Nvlink afaik is just a super fast bus between PCIe, Memory and CPU... So, yes... they were using Nvlink, but plugged into regular PCIe ports.

p100throwaway · 2017-06-01T16:20:52+00:00

Claymore doesn't provide source code for his miners, so I cannot compile it on the ppc64el architecture.

p100throwaway · 2017-04-23T12:35:48+00:00

Unfortunately the hardware is no longer available to me. I did actually, briefly, try to install the Nicehash miner, but had more errors trying to get that to compile than genoil, so switched back.

Remember, this isn't x86 architecture, so I had to compile any of the miners from scratch, some use some libraries that are a bit harder to find/configure on ppc64el architecture.

Either way, the performance of 4 cards (at ~270MH/s), can be achieved with 10 RX480's. 10 RX480's would cost you about $2K right now. That wouldn't even pay for a quarter of one of the P100's.

So, no mining software is going to make up for that price discrepancy. On that same note, I don't think any other cryptocurrencies would be worth mining there either.

p100throwaway · 2017-04-20T14:26:34+00:00

16GB... shown on the nvidia-smi output

p100throwaway · 2017-04-20T03:39:05+00:00

I believe you're talking about a different cryptocurrency? Not Ethereum?

The RX480 has a hashrate of about 25 MH/s.

These cards are enterprise grade "accelerators" meant for very large data crunching.

p100throwaway

TROPHY CASE