SCAM !!!
Do not let your expensive machines work in this POOL!
You will NOT get a payout !!!
Please pass on this message to ALL MINER, THANK YOU !!!
This POOL is closed immediately !!!
SCAM !!!
http://fs5.directupload.net/images/180729/5xysruwq.jpg

I had so many problems with ubuntu 16.03 and 16.04... quick fix would be to grab ETHOS copy and make custom script to load tdxminer... easy as to do.

I noticed that some pools with high hash rate is doing something like an attack.
When difficulty is low, they push max hash rate until block is found and the atacker earn most part of block reward and he left the pool for a while until difficulty decreases. So i noticed that sometime the pool has huge hash rate like 3gh/s~7gh/s at gincoin for example and when block is found and diff increase it has only 150mh/s. It is like a cheat.
So, tiny poor guys like me with my 8x RX570 cant earn shit.

I was mining at zergpool and my reward after 24h mining at 22mh/s was 0.30gin instead 1.00.
But there are other pools that has same attack.

So the best for most users will be the pool that has a stable hash rate.
I was mining good at pickaxe.pro or gos.cx, it has low rash rate but it is stable, but you need to be patient because some days block is not found, but another day can found 2 or 3 blocks. After a week my average earns was higher than the calcs and much times higher than the attacked pools.

Just read this thread: https://bitcointalk.org/index.php?topic=4432704.0

Under water Vega hashes at 7.345Mh/s. But now on 33*C.
I made some testing under Windows. Normal settings for the cards in balance mode are 220W. And cards is throttling hits this power level. But you can set Power up to +50%. Than under full load I have 1630Mhz with 330W in some cases. Worth mentionned that getting 350W is no problem for the LC edition and VRM are able to delver more than 400W.

So the only way to get more H/s is to reflash bios from LC edition or maybe some improved ROCM release. Than, it shoud be around 8Mh/s.
Cheers:D

As a matter of fact I did read the reference thoroughly.

1. Setting --setoverdrive % is valid ONLY for the highest performance level which in case of Vega64 the 7'th. The 7'th performance level is @ 1711Mhz for the core. So increasing --setoverdrive % of 10% set (theoretically) the highest clock to 1882,1Mhz which is impossible to handle by the core at the stock voltage.

2. I don't know why Rocm set the 7'th clock level to 1711MHZ since the card have 7'th set to 1630Mhz under Windows.

3. Rocm can force Vega to work in 7'th clock level without the load( all diodes on the cards are on). Than it is 1630Mhz even though there is not such supported frequency.

First frequencies under load. Second idling.



4. There is no information about what kind of power is displayed in rocm-smi. If this is a hole card power we have a lot of room to growth. But if it is a Core power only. hmm.. I have never seen numbers above 211W. TDP VEGA 64 Air is 295W and LC 345W. Under Windows we can monitor at lest 4 different temperatur of the VEGA 64 (CPU thermal diode, HBM2 temp, Hot spot temp, vrm temp) and power for the core and for the GPU package. Rocm can provide only CPU thermal diode temp and some kind of udefined power consumption.

5. The most important temp in terms of Lyra2Z algo is the Hot spot temperature which we don't have under rocm. There is many speculations about what is a Hot spot temp in fact. I like to belive that it is actually a SoC temp. It has no direct contact with the heatsink so gets very hot. Especially during gaming or, as i presume, during Lyra2z mining. Using cryptonightv7 algo we can observe that the hotspot is up to 10*C higher than the core thermal diode since it is a memory intensive algo. But during gaming the difference can be up to 20*C and easy hit 100*C.

Conclusion:
Vega 64 on air can work up to 6'th freq level when mining (only 6 diodes on the cars in on) The limit is the power. At least the Vega 64 air bios not allowing to pass 220W.
Since the PowerPlay table can not overclock the 6'th or 5'th freq level to achieve higher hashing speed we have to undervolt the card to meet 220W limit. That should boost the core frequency by itself.
Since I don't know any way how to undervolt the the GPU we're back to square one.

At the end of the week I'am planning to install a water cooling on my 4 Vegas. I wonder how the frequency is scaling with the temperature. Than I will re-flash those cards using Vega LC bios.

I'll keep you posted.
Cheers:D

I don't wont setsclk to 5. It is 1401Mhz GPU. I wont to set it to 7 @ 1711Mhz.
This was easy done in Windows. Cards worked great. Here I can't force power play to pass 220W. Setting --setoverdrive to 10 and more crashes the system and does not change anything.

And --setmclk 0-2 does not change the mem freq. It is on level 3 constantly.

Even changing --setprofile # # # # # does nothing.

This was a great advice. Thanks

My rig is working great.
4xVega46 @28.Mh/s on stock settings except the fan speed.

Unfortunetly stock setings becouse I cannot OC.
Tried to use rocm-smi. No luck.


But that does not change anything.
Since those cards will be water cooled I wondering how to OC?

The only way is to flash my Vegas with LC bios? Really?
Cheers.

confirm, the problem is on lyra2z. On phi2 or any other algorithm 3-4% deviation with calculators but not 27%... And about the fact that the calculators specifically do it - it's not exactly, just the Lira was apparently not designed for such a power network, and now there is an error in the calculation of complexity.... Generally when podseti arrived at лиpe2з necessary from the final profit take 27%