Ethminer: GTX 970: Hashrate is dropping as DAG size is increasing

[arainchik]

It looks like GTX 970 (Compute 5.2) can only get 8-9 Mh/s at current DAG (ethminer -M 4700000 -U), while it was getting 13-14 Mh/s at block 4,100,000 (ethminer -M 4100000 -U) , and 14-16 at block 0 (ethminer -M -U)

Why such a dramatic drop in performance? "nvidia-smi" shows that Memory utilization is 100% during low block number benchmarks with high rx/tx transfer rates and only 60% at block 4700000

Any suggestions on how to get hashrate increased?

[jasonwee]

use opencl instead of cuda? mine 960m can get around average 12Mh/s

[arainchik]

Switching to OpenCL (Linux) didn't make any difference, still getting 8-9 Mh/s

[seevik2580]

same problem here ... i tried older drivers, newer drivers, overclock, underclock, different miners, different OS, nothing helps .. still getting max 9,6Mh/s...

[orofbrown]

@jasonwee how did you get that high of a rate with the 960m? I can only manage to squeeze 4.5 Mh/s out of mine

[Ludicam]

i'm managing 10.67 atm with mine being overclocked (+200 core, +200 mem and +15mv and 100% plimit and changing the GPU to Compute performance P0 State. Looks like its time to upgrade the GPu lol unless anyone knows any hidden tricks especially if u guys are saying ubuntu isn't even helping

[Ludicam]

quick guide for u @orofbrown, Step 1 overclock gpu (watch a video), step 2 change from p2 state to p0 using nvsmi (type into google someone has a guide how to do it) you need to overclock before doing step 2 or don't overclock at all as you are changing your values meaning the p2-->p0 process will be ignored. then change your gpu to compute performance should up your hash rate to the same value as mine approx 10.7

[orofbrown]

Awesome thanks @ludicam I'll try it out. I did manage to get some better ethash performance by installing Ubuntu, but I'll see if I can overclock it like you said, bc I'm pretty sure I've got it on P0 already. Are there any concerns with over locking on a laptop? And yeah, I'm working on getting a better card myself lol

[Ludicam]

Hmm if its a laptop you're overclocking in there is only 1 major risk like everything else which is heat dissipation. I would recommend overclocking but i would be more catious with the temperature of your gpu and cpu and watch the temp as you OC it. But you will need to redo the P0 state once you OC it as it keeps the previous values.

Sent from my Samsung Galaxy smartphone.

-------- Original message --------
From: Mike Young [e-mail]
Date: 20/01/2018 00:58 (GMT+00:00)
To: ethereum-mining/ethminer [e-mail]
Cc: Ludicam [e-mail], Mention [e-mail]
Subject: Re: [ethereum-mining/ethminer] GTX 970: Hashrate is dropping as DAG size is increasing (#489)

Awesome thanks @Ludicamhttps://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fludicam&data=02%7C01%7C%7C9799f08ed17347d05f0608d55fa0ed8a%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636520067141190497&sdata=6YJsiuH8fdRbDeVWZFsSJx4AZD81%2BNYsv1AoYBDOKro%3D&reserved=0 I'll try it out. I did manage to get some better ethash performance by installing Ubuntu, but I'll see if I can overclock it like you said, bc I'm pretty sure I've got it on P0 already. Are there any concerns with over locking on a laptop? And yeah, I'm working on getting a better card myself lol

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[phreakske]

No man, it works fine, yesterday, i did try myself with an MSI OC Gaming 4GB GTX 970, you've got to change Nvidia control panel and change "optimal performance" for computing power. Then Mh/s changes quickly to 26.411 MH/s at my place, which is very high for such an oldie. First it was 2.7MH/s. Simple solution :-)

[jasonwee]

try different --cl-local-work --cl-global-work that works for your card, @orofbrown

[RMRx]

phreakske, any chance you could share your system config & ethminer options?

[mihaipopescu3]

@phreakske what drivers are you using?

[phreakske]

Well i've been running windows 10 and it seems every time i start up, it's something different.. windows 10 suxx.. i've ordered a new motherboard and i'm gonna test ubuntu/windows 7 next week. After the latest update "fall creators update" it's back to 9MH/s... so i guess after each windows-update everything is fucked up. I've ordered 2x GTX 1050ti and an extra GTX970 .. i'll keep u up to date as soon as i've got my new setup. Searched the whole internet and every opinion is the same... don't use windows 10 !

[niralacrypto]

Yes my GTX 970 4G is also not giving more than 8-9Mh/a

[ImSelectional]

@phreakske How did you even manage to get 26 mh were all stuck at around 8. Windows 10 isn't the problem if you set it up correctly.

[phreakske]

I still don't know how it did manage it... it was the first time i did ran claymore miner, after upgrade of windows i can't get more than 10.7MH/s. I didn't even had to do anything, stopped and started it was 26MH/s.
I'll try again friday, with windows 7, and 2 GPU's same brand, same card. GTX970 MSI gaming 4GB OC edition.
I use the latest drivers, using geforce experience, i've tried different onces, but then card wasn't dedected. I'll keep on trying to get the same result again... weird.

[ImSelectional]

@phreakske to have the cards detected use cuda6.5 but either way, it had no effect on performance. how did you change optimal performance for computing power? where is that setting?

[phreakske]

SET GPU0=-setBaseClockOffset:0,0,158 -setMemoryClockOffset:0,0,200 -setPowerTarget:0,75 -setTempTarget:0,0,67 -forcepstate:0,0
nvidiaInspector.exe %GPU0%

That's the line i'm experimenting with, i use ethminer (works better).. even on windows.
I use it in a batch before calling ethminer with his options...
It's a small overclock but it helps and it gets the geforces in P0. Now it get's 10.5 maximum @ 114W

[phreakske]

In nvidia profile inspector you put "Force Cuda P2 state" to off... then you get an extra boost for free...

[quadaboum]

Hello, how do you manage this to achieve these rate i'm only at 2.5 using Claymore and it's the same with Ethminer

[ImSelectional]

@quadaboum Make sure you go to nvidia control panel and turn on "optimise for computer performance"

[tttonyyy]

Same issue here, got two Zotac GTX 970s, one in a Win10 box, one I've just put Ubuntu on, both get approx 9MH/s, same with claymore or WinEth. The Win10 one is optimised for compute.

I did wonder if the DAG could be in the 0.5Gb slow area of the GTX 970 memory, but it's only 2513MiB at the time of writing and I assume claymore loads the fast area first.

[ricardobaehr]

Same problem here... 7.5 MH/s

Any suggestion?

[phreakske]

No succes..sold my cards...

Op ma 16 apr. 2018 22:31 schreef Ricardo Baehr [e-mail]:

Same problem here... 7.5 MH/s

Any suggestion?

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[ricardobaehr]

Which card do you recommend?

[phreakske]

Best cards are rx470 mining edition...29MH/s even microns 8GB will
do..sapphire...

Op ma 16 apr. 2018 23:04 schreef Ricardo Baehr [e-mail]:

Which card do you recommend?

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