Great post! I love how Gridcoin doesn't require ASICs (or even GPUs, or even Xeons) to be competitive/profitable. The best value I've found so far is actually a single board computer: the Odroid XU4. $80, generating 27 magnitude (6 GRC per day) on Universe@Home.
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hui, really? Thats a shitton of Mag for a cheapo board!
it's an absolute beast, whetstone 1475 dhrystone 5401, and like 10 watts
Thats a bit faster /about the same then the atom in the UPs under Linux - but there are only 4 cores. (And 5W less, but thats to expected :D).
Do your universe tasks run smoothly? Since about 2 month I often have one or even more that just don't go farther. It is one reason why I switched to TN Grid for the atoms.
In the last ~3,000 tasks, I've had to abort around 10 due to that issue. Kinda sucks that you have to babysit it.
I switched to tn-grid for like 12 hours the other day b/c universe@home ran out of work. but, things seem to be back to normal and i also increased my work buffer, so maybe next time my cores won't be interrupted.
i was just talking to someone about using a spare computer to mine; and reading your exchange was like confirmation
Wow that's a lot! My Orange Pi PC & One + Raspberry Pi 3 + Pine 64 all makes 26 mag combined in that project...
It's nice that the Odroid comes with powersupply and active cooler too. Just need to pop in a SD card and some kind of connectivity (wifi dongle or ethernet). My Pine64 is 8 mag, my RaspPi3's average 10 each. Orange Pis are still in the mail from China...
The problem I've seen is that my CPUs throttle because of the heat, and I tried attaching a USB fan and it fried one of the PSUs... :( With the fan, the Orange Pi One was running pretty nice. Maybe because of that is why my mag is pretty low.
Fortunately I had a couple of spare noctua 12v fans which I run off the Pi USB without isses; cool and quiet
It could be the fact that my PSUs are those cheap 5V 2A that are found on Amazon :p
Yeah I opted for official psus
Too much heat can really screw things up. My NanoPiM3 can only use 7 of the 8 cores. In fact, the OdroidXU4 throttles to 1.8-1.9ghz (2.0ghz max) even with the active cooler, plus another fan, and 21C ambient.
Excellent work!
I can't wait to receive the rest of my SBCs so I can write a post here comparing their relative values. By the way, was it very difficult to get the wallet running on a Pi?
If you use Ubuntu I think there is a community hosted repository. I use Raspian-lite so I compile it from source code, if you need it I have full instructions which I can make a post about if you like.
That would be very cool, as I'm still quite noob-ish
done https://steemit.com/gridcoin/@scalextrix/how-to-install-gridcoinboinc-on-a-raspberry-pi