Post
Topic
Board Mining (Altcoins)
Re: AMD Memory Tweak - Read and modify memory timings on the fly - [Vega Friendly]
by
coinscrow
on 29/03/2019, 19:38:58 UTC
Holy shit, that's nice man.
Is it stable? Is this ubuntu or you use hiveos/minerstat/similar?

Ubuntu 18.04.2 LTS and AMD-gpu-pro 18.50

Still struggling with 4.15 kernel not able to set clocks properly.
Anything above 1700MHz in P7 state puts the GPU in crimp mode. So I have to use 1700/1030mV in P7 to get the highest possible coreclk. Ideal would be something like 1800/975mV in P7, that would make ~1650 effective clock in P7 at much lower wattage
I learned I will have to upgrade kernel, but don't know which version, there are also complains everywhere about 4.17-4.20 all over the forums.

I'm currently testing stability.

Wondering what would be the eth hashrate with these timings.
Implying on CN algos it gives +15%, 45mh*1.15=51.75mh
Gonna test it later.

Hi,

We tested Vegas were the most stable with 18.50 driver + 4.16 kernel.
4.17 and upper had problems with stability and most of the times the GPUs were undetected. (clinfo)

https://github.com/minerstat/minerstat-os/blob/master/bin/overclock_vega.sh

This script works perfectly, you can give it a try.

Code:
sudo ./overclock_vega.sh 0 945 1100 80 950