After constantly fighting with windows for months. I decided to make the leap to Linux for my mining rig thinking it would be more reliable. Well.... not really.



When I start mining, everything is fine. Temps never get above 73 on hottest card during mid-day. It appears that after about 30+ mins or so GPUs start disappearing from the miner terminal window and stop hashing (they still show in Nvidia x-server). Some GPUs can take 10+hours to disappear. After about 24 hours of mining, only 4 are still working (confirmed with pool). Only way to get them back is to reboot the rig. I have tried changing risers and I still have this issue. Any ideas?




Currently I am running,

 Ubuntu 16.04
B250 Mining Expert MOBO
DSTM mining ZelCash
7 GPUs
1x Gigabyte G1 GTX1070
2x Gigabyte Mini GTX1070
1x Asus Strix GTX1070
2x Zotac Mini GTX1070ti
1x Gigabyte GTX1080


All card undervolted to 150W or less. No OC no anything.

Power:
1200w PSU ---> 3x GPU + MOBO + HDD, etc.    ~~500W used
1200w Server PSU ---> 4x GPU                         ~~600W used

Hey All!

This forum has been super helpful while putting my rig together (thanks guys!) but, I still can't iron out these last few issues I am having.

It seems that every 3-4 hrs or so my rig hard crashes. The PC can only be recovered by completely unplugging it. With my luck, this usually happens as soon as I leave for work. I have had to resort to purchasing a Wifi outlet in the event this happens while I am away. Currently, the rig is mining 24/7 only with the aid of a BAT file I made that auto reboots every 2.5 hours. This seems to have happened shortly after adding the 6th card but, I also changed from Skunkhash to Neoscrypt around that time so I am not sure. The only thing that sticks out to me is I get weird power fluctuations (See pic) in MSI AB that seem to lower my hashrate while they happen. After about 5 mins, the flucuation goes away. Am I missing something?

The Satoshi Smasher


Fluctuation



MSI AfterBurner
Power 84%
Temp Limit 85%
1080-Core +45, Mem +450
1070-Core +70, Mem +375

Power:
~940W via Kill-a-Watt

Algo:
Neoscrypt ~6.15/MHs

Miner
Ccminer KlausT Cuda 8

System Specs:
Celeron G3920
Asus B250 Mining Expert MB
Crucial DDR4 2400Mhz 8GB
250GB HDD (SSD to come)
1200W 87% PSU
Virtual Mem= 98GB
Nvidia Driver-388.43
 
Cards:
1x Gigabyte 1080
3x Gigabyte 1070 Mini
1x Gigabyte G1 1070
1x Asus Strix Rog 1070