Ichbin3 wrote:MeeLee wrote:sudo nvidia-smi -pl 133
This I do know.
MeeLee wrote:undervolt Nvidia GPUs, due to stability issues, you can do it on Ubuntu.
Please show me how.
It seems to be a very hidden secret, because nobody in the whole internet knows this.
It's been experimented with before, reported and done before.
Maybe you don't know about it...
Undervolting Nvidia GPUs, might work on Core 22, but then you're way above the optimal setting for Core 21.
But when you set it for core 21, the voltage setting will crash WUs on core 22, because core 22 WUs are more GPU demanding, causing voltage drops, and instabilities.
The voltage setting is hard set, and has no auto adjustment for Nvidia GPUs.
Not only that, but even if your voltage is set perfectly, if the WU has one small fraction (a spike) in power consumption, the WU crashes.
It's the same as when you'd overclock the GPU too high. It's a fine tuning that requires days or weeks of testing, and being ok with a setting that works for the heaviest WUs on the hottest of days, but is slightly less optimal for cold days on smaller atom WUs.
Instead, limiting power consumption, will allow the driver to do it's work of auto-tuning the voltage for the optimal setting.
Since power usage and overclocking, still allows the driver to autoadjust/correct in case there's a higher than normal demand of activity, it will be more forgiving.
From the Boinc Forums I've read (but haven't tested), that AMD drivers are forgiving when dropping the voltage too low; but power capping can cause them to crash WUs.