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World Community Grid Forums
Category: Support
Forum: Android Support Forum
Thread: PINE A64 |
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Thread Status: Active Total posts in this thread: 16
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psmacmur
Cruncher Joined: Oct 23, 2008 Post Count: 6 Status: Offline Project Badges: 
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So, I finally got my PINE A64 crunching WCG last night. Only 1 official result in so far, but at least it's running.
 Curious how it'll compare to my Atom-based Windows tablet at low-power crunching.I saw on the PINE64 forum someone else is planning to crunch on theirs, and there are some android box crunchers here obviously. Has anyone else encountered a bug whereby BOINC puts the display into portrait mode? My TV doesn't rotate that way, so I'm doing science sideways.  |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Never heard of them before. Just looked them up. Looks interesting. What OS are you running on it? Android?
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psmacmur
Cruncher Joined: Oct 23, 2008 Post Count: 6 Status: Offline Project Badges:
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Yup, the non-rooted Android 5.1.1 build that they supply. Still has some kinks; arguably the orientation thing, as well as a flaky ethernet driver, but otherwise seems solid.
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vlado101
Senior Cruncher Joined: Jul 23, 2013 Post Count: 226 Status: Offline Project Badges: 
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Are you able to only crunch OET and OpenZika since its an Android OS?
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OldChap
Veteran Cruncher UK Joined: Jun 5, 2009 Post Count: 978 Status: Offline Project Badges: 
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Interested in how much cooling you need to stop it throttling
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psmacmur
Cruncher Joined: Oct 23, 2008 Post Count: 6 Status: Offline Project Badges:
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Yes, only OET and OpenZika at the moment, but I'm cool with that as I have a windows tablet for the rest.
Cooling is certainly an issue. Been tracking it using CPUz. At first, it was throttling on and off to 1008 MHz (from the default ~1108MHz), even after I installed the small heat sinks that came with my power kit (intended for RPI3, so they fit perfectly). The CPU heat sink gets quite hot to the touch, so I know it's working, but it was still bouncing off 80 degrees. I then arctic silvered a couple of old voltage regulator heat sinks to the RAM and left it overnight. This morning, it seemed stable at 1108 (?) MHz and 78 degrees. I do hope to upgrade to a decent copper heatsink at some point, as I'm sure it's still throttling from time to time. |
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fuzzydice555
Advanced Cruncher Joined: Mar 25, 2015 Post Count: 89 Status: Offline Project Badges: 
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I just finished setting up a 5 pine rig.
---------------------------------------- The boards are cooled with self-adhesive heatsinks and a 140mm fan at 800RPM. With passive cooling the CPUs throttle to 800MHz, with the fan they hover between 1100 and 1158MHz. Power consumption at the wall is 21-22W with a Blitzwolf 40W power supply. Add 1W for the fan and 0.5-1W for the switch. Based on this, it could be possible to run 10 boards from a single 60W 10 port PSU like this: https://www.amazon.com/dp/B00YRYS4T4?psc=1  |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I like that setup. My odroid uses a brick power supply, no microUSB. If it did, I would definitely look into stacking multiples like you did.
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fuzzydice555
Advanced Cruncher Joined: Mar 25, 2015 Post Count: 89 Status: Offline Project Badges:
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With a bit of soldering, you could run multiple Odroids from a PC power supply.
---------------------------------------- The biggest benefit of stacking was the single cooling fan, it's basically noiseless at 800RPM. I'm not sure an odroid stack could be run with small passive sinks and a single fan, I think those boards have higher TDPs than the 4W pine. |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Yes I believe you are right about the TDP on the xu4. I put an aftermarket heatsink and fan on mine since the OEM one they offered at the time was garbage, and it is much better at heat dissipation. I also built it into a small wooden box I found at a craft store and cut holes for 120mm intake and exhaust fans for it. Overkill, yes, but I didn't want it overheating. Works well. I was going to use it for my streaming rig, but it just crunches at the moment. Your setup reminds me of this pi cluster: https://www.youtube.com/watch?v=i_r3z1jYHAc
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