Anyone with SP31 getting more than 4.7Th/s?
We have 13 SP31s here at
Toomim Bros Bitcoin Mining Concern right now. With 16C intake temps, we're currently seeing the lowest performer getting 4743 GH/s, highest 4915 GH/s, mean 4835 GH/s.
Do this from the ssh console:
echo "1' > /etc/mg_ignore_110_fcc
http://www.spondoolies-tech.com/blogs/technical-blogIf you have a lot of machines to configure, you can also scp it over. Example if your machines are 192.168.1.5 through 192.168.1.8:
echo "1" > mg_ignore_110_fcc
for ip in 5 6 7 8; do scp mg_ignore_110_fcc root@192.168.1.$ip; echo "Finished 192.168.1.$ip"; done
You will then want to change the power limit on the PSUs. In my experience, Murata PSUs can handle between 1330W and 1380W when run off of 235-245V in ambient temps no greater than 22C. Keep in mind that when Muratas hit their power limit, they sometimes lock up and need a power cycle to recover them, so you shouldn't increase the limits unless you're going to be nearby for several hours.
I also recommend using starting voltages of 650 mV or 645 mV with SP31s, not the default 655 mV, since 655 is too close to the settled voltage for some SP31s. You may want to change the fan speeds as well. I'm not sure yet what the optimum is, but I suspect it's the setting that will eliminate thermal throttling on the loop 4 and 9 ASICs, but no higher.