Topic: tdxminer lyra2z/XZC Miner for AMD GPUs on Linux - page 8. (Read 44502 times)

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

yours is better. 106W / card. is it easy to adjust the core clock and mem clocks on linux ? i never installed linux for mining.

yours is better. 106W / card. is it easy to adjust the core clock and mem clocks on linux ? i never installed linux for mining.

8x rx580 cc1210 mc1000 cv900 gives 27kh/s and takes 950W, you can probably go lower with power consumption.

Any idea what is the power consumption of AMD RX580 mining with tdxminer on lyra2z algo? More than Nvidia GTX 1080Ti or better?
I think they wont release the windows version?

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.

Problem in a pool. If it is impossible to set difficulty, there will be a fall of profit.

Minecore.pro there is an opportunity to regulate difficulty. On ravein everything is good, but on gin for some reason there are no payments. If who knows still pools where difficulty can regulate, tell about it please.

On the picture two 8x1080ti from the set difficulty, and 6x584 (20,5Mh) difficulty appointed by a pool.

https://ibb.co/gUM82T

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%