Claymore's ZCash/BTG AMD GPU Miner v12.6 (Windows/Linux)

[ayoungtech]

Has anyone had issues with 6 GPUs in Ubuntu 14.04, Clay v12.1 ?

I had been running smooth with 5, (2-280x, 3-7950)   But today I added a 290x, and after 2-3mins of mining, one of the cards displays 0 hashrate, and the watchdog restarts Claymore.

First I thought maybe I was overloading one of my power supplies (running 2 power supplies, 1000w and 750w), so I switched things around. This didn't help. 

Right now it's been going for 25mins with now issue. BUT, I had to run three separate instances of Claymore. I separated them based on the card type. 1-all three 7950s, 2-both 280x, 3-the one 290x.

[hawer183]

Hmm so I can confirm there is some weird stuff going on with claymore v12 and polaris hash reporting. First shot is claymore 24h average v12.1 right before I switched to optiminer 1.6.2. Second is optiminer after 24 hours. 

Claymore reports exactly 2804 average hashrate miner side which should equal ~2750 poolside after dev fee is taken out. Poolside reports over 100mh less than that though.
Optiminer reports 2734, which is exactly what pool is reporting at 2731

Whats more interesting is that Claymore on a 280x rig reports the exact hashrate minus fee that the pool reports. At first I thought this was either a pool/hashrate bug issue, but the fact that optiminer reports the correct hashrate, and the 280x rigs report correct with claymore.

My guess is that either there is a bug with polaris hash reporting (i hope) or he couldn't reach optiminer performance on polaris, so he bumped his numbers by 5% to make it look like his miner is faster 

1. Hashrate is calculated in the same way for all cards, so Polaris cards cannot get different numbers related to 280X calculations. Your idea about adding 5% on polaris is wrong too.
2. You know I don't care about Linux much. In Windows you can easily see that my miner is the fastest for Polaris because the difference is significant; in Linux speeds must be similar. If you get bad numbers on pool and think that it's because of the miner, don't use it, you have a choice. My opinion: it's something related to pool calculation, for ZEC I always get more hashrate variations on pools side than for ETH mining.

Great job Claymore!
I really like your miner. Do you have a full time job, or this is what are you developing all day long? Right now unfortunately the zcash is under 29$. Would be great to have a faster miner Is there always the opportunity to develop a faster software?
Thank you!

[Benchman]

Testing RX470 8gb right now.

310 mh/s stable for now. Is is good?

[Demarsac]

i had a rx470 reporting -30 sol. so there's definitly a bug
the -30 happend once, never able to reproduce it.

-30 sols, you better make sure you have the Zcash to pay to the pool then.

+1
HAHaha... smart comment

[Westant]

Testing RX470 8gb right now.

310 mh/s stable for now. Is is good?

It is quite good.

[yatta]

On v12 my rx480 get about 300 sols - undervolted.
On v12.1 they get about 160-170 sols ?

[Yaminat]

On v12 my rx480 get about 300 sols - undervolted.
On v12.1 they get about 160-170 sols ?

Did you use the right driver?

[yatta]

I'm using 16.9.2 drivers.

[hawer183]

Testing RX470 8gb right now.

310 mh/s stable for now. Is is good?

Can you show for us your radeon or watttol settings?

[IOTUSA]

zec will start rally soon, dont worry child

You've got it right! Over 20% pump is going on. Hopefully won't follow a dump  

There will be no dump, we will get price at 55/60usd by the end of next weekend

For those of you who were around when Ethereum went from Alpha to beta, we are now in the same place with Sapling in Zcash. I'm not saying it's 'going to happen' but Ethereum wen't from $0.50 - $34 in the 6 months following their second release.. AND we also have Ethereum moving to POW which most likely will push miners over to Zec, raising diff and price.

Food for thought, and let's keep our fingers crossed

[GamerMiner]

Hello,

Thanks for the new release 

With my R9 290x i'm reaching 330 H/s at stock speeds (even with playing with -i).

To anyone that have an R9 290(x) : can you confirm my results please ?

Thanks

[Corerj]

Hello,

Thanks for the new release 

With my R9 290x i'm reaching 330 H/s at stock speeds (even with playing with -i).

To anyone that have an R9 290(x) : can you confirm my results please ?

Thanks

same here... but i saw people talking about 400sols with modded rom...tried to tweak my 295 but no success...

[antantti]

zec will start rally soon, dont worry child

You've got it right! Over 20% pump is going on. Hopefully won't follow a dump  

There will be no dump, we will get price at 55/60usd by the end of next weekend

For those of you who were around when Ethereum went from Alpha to beta, we are now in the same place with Sapling in Zcash. I'm not saying it's 'going to happen' but Ethereum wen't from $0.50 - $34 in the 6 months following their second release.. AND we also have Ethereum moving to POW which most likely will push miners over to Zec, raising diff and price.

Food for thought, and let's keep our fingers crossed

No need to keep your fingers crossed, still waiting for kraken/ poloniex to enable margin trading on zec. When that happens it takes less than 24 hours to see what real value right now is.

Comparing to eth, margin trading started in Aug 2015, wonder why it takes so long for zec )

[IOTUSA]

zec will start rally soon, dont worry child

You've got it right! Over 20% pump is going on. Hopefully won't follow a dump  

There will be no dump, we will get price at 55/60usd by the end of next weekend

For those of you who were around when Ethereum went from Alpha to beta, we are now in the same place with Sapling in Zcash. I'm not saying it's 'going to happen' but Ethereum wen't from $0.50 - $34 in the 6 months following their second release.. AND we also have Ethereum moving to POW which most likely will push miners over to Zec, raising diff and price.

Food for thought, and let's keep our fingers crossed

No need to keep your fingers crossed, still waiting for kraken/ poloniex to enable margin trading on zec. When that happens it takes less than 24 hours to see what real value right now is.

Comparing to eth, margin trading started in Aug 2015, wonder why it takes so long for zec )

Agreed,
I do believe however that Margin trading most likely will follow the Sprout release as it signals some network maturity and will require upgrade of wallets and infrastructure software. But I agree, margin trading is the starter gun for a drastic valuation uptick.

[spyshagg]

Hello,

Thanks for the new release  

With my R9 290x i'm reaching 330 H/s at stock speeds (even with playing with -i).

To anyone that have an R9 290(x) : can you confirm my results please ?

Thanks

290x @  940mhz / 1250  = 364h/s

modded bios
V12
R15.12

[jstefanop]

Miner does not use 1.88 factor in calculations, using it is a bad idea because it is theoretical factor and real implementation may be not so good. Therefore miner just counts all solutions found, and time that was spent. If algorithm implementation has a bug that causes 1.8 factor, it will cause less number of solutions and less calculated hashrate. So this idea is wrong.
I still think it's related to pool. What pool do you use? I will put all my polaris cards to it and check 2-3 daily hashrates to see hashrate deviations.

Claymore I found your bug...seems like shares are dropped when there is high network latency in your share queue (time after block is found on network, network disconnects, pool disconnects etc). Either there is a bug in your share queue that not properly submitting queued shares, or when you do regain connection to pool, you dump all the shares at once to pool and pool software might be blocking/loosing those submits.

Below you can see a test of my theory, network is manually dropped at 12:58:22 and reconnected at 12:58.36 and in that time system finds 18 shares, but only 15 reach the pool.

This issue is obviously magnified by larger rigs since the faster the system finds shares the more shares will eventually be dropped if there is a network latency, so it explains why you or others might not see the same behavior. Maybe put in a slight delay(10-20ms) between queued shares so they are not all dumped at the pool at same time?

[Claymore]

Miner does not use 1.88 factor in calculations, using it is a bad idea because it is theoretical factor and real implementation may be not so good. Therefore miner just counts all solutions found, and time that was spent. If algorithm implementation has a bug that causes 1.8 factor, it will cause less number of solutions and less calculated hashrate. So this idea is wrong.
I still think it's related to pool. What pool do you use? I will put all my polaris cards to it and check 2-3 daily hashrates to see hashrate deviations.

Claymore I found your bug...seems like shares are dropped when there is high network latency in your share queue (time after block is found on network, network disconnects, pool disconnects etc). Either there is a bug in your share queue that not properly submitting queued shares, or when you do regain connection to pool, you dump all the shares at once to pool and pool software might be blocking/loosing those submits.

Below you can see a test of my theory, network is manually dropped at 12:58:22 and reconnected at 12:58.36 and in that time system finds 18 shares, but only 15 reach the pool.

This issue is obviously magnified by larger rigs since the faster the system finds shares the more shares will eventually be dropped if there is a network latency, so it explains why you or others might not see the same behavior. Maybe put in a slight delay(10-20ms) between queued shares so they are not all dumped at the pool at same time?

PM me entire log file, I'll check it.

[antantti]

For those of you who were around when Ethereum went from Alpha to beta, we are now in the same place with Sapling in Zcash. I'm not saying it's 'going to happen' but Ethereum wen't from $0.50 - $34 in the 6 months following their second release.. AND we also have Ethereum moving to POW which most likely will push miners over to Zec, raising diff and price.

Food for thought, and let's keep our fingers crossed

No need to keep your fingers crossed, still waiting for kraken/ poloniex to enable margin trading on zec. When that happens it takes less than 24 hours to see what real value right now is.

Comparing to eth, margin trading started in Aug 2015, wonder why it takes so long for zec )

Agreed,
I do believe however that Margin trading most likely will follow the Sprout release as it signals some network maturity and will require upgrade of wallets and infrastructure software. But I agree, margin trading is the starter gun for a drastic valuation uptick.

Before it can go up it first needs to be shorted to oblivion.

[UnclWish]

Using R9 280X with modded bios and some overclocked GPU. v12 works fine. Tested over 2-3 days working without issuies.

With v12.1 only 1st intensity is most stable. With any other intensity miner after about 10 min starts to show 0 hashrates and 0% GPU load.
With 1st intensity miner works normal 20-30 min and then speed is 0 too. Miner restarts and so on.

Returning back to v12. It's stable for me.

Windows 10 Pro.
Tryed 15.12 drivers, disable overclocking. Nothing helps.
Any other miners works fine. PSU 60-70% load.

[Socket54]

I see some of you guys getting 300+ H/s from RX 480's.
What is being done doing to achieve that?