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World Community Grid Forums
Category: Support
Forum: Android Support Forum
Thread: Android on Raspberry Pi - MagPi #71 |
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Thread Status: Active Total posts in this thread: 10
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KerSamson
Master Cruncher Switzerland Joined: Jan 29, 2007 Post Count: 1673 Status: Offline Project Badges: 
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Even if I am definitively not a fan of Android on Raspberry Pi, you can take a look on the latest issue (#71, July 2018) of the MagPi Magazine , from page 16.
----------------------------------------Cheers, Yves ... still waiting for a WCG project support on Raspbian ... ---------------------------------------- [Edit 1 times, last edit by KerSamson at Jun 30, 2018 9:34:26 AM] |
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sunk818
Advanced Cruncher Joined: May 10, 2018 Post Count: 66 Status: Offline Project Badges: 
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Seems like a good alternative to ODroid that also runs Android. Trying to figure out the energy cost of Android devices (smartphone, ODroid, Rasp Pi) vs running an i5/i7 processor. I think i5 can run about 60W sustained... while it would take 10 old smartphones (4 core 1Ghz) to reach the same RAC (e.g. 1k).
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Coleslaw
Veteran Cruncher USA Joined: Mar 29, 2007 Post Count: 1343 Status: Offline Project Badges: 
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Last I looked Quad core ARM devices would use around 3.5-4W. Adjustable based on if the screen was on or not. So, 10 of them would still be less than the i5 reference.
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aaabaaab
Cruncher Joined: Jul 31, 2016 Post Count: 42 Status: Offline Project Badges: 
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My Raspberry Pi 3 running WCG on Android at 100% uses 4.2W with another 1W used by a small fan.
----------------------------------------I measured also that the 2 Odroid XU4 + network switch + 2 small fans use around 19W. However this measurement is not relevant as I already know that Odroids are running at a lower freq... I'm still waiting for bigger fans I've order on ebay...  [Edit 2 times, last edit by aaabaaab at Jul 10, 2018 6:24:27 AM] |
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cristipurdel
Senior Cruncher Joined: Dec 13, 2008 Post Count: 158 Status: Offline Project Badges:
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My rule is that freq is driving the temps and power draw and RAC
----------------------------------------So find your own optimal/desired freq (my case for phones temp<80 deg & no throttling = efficiency time > 95% & all cores active) My 10 Amlogic 912 sticks were using 35W at about 1GHz @80deg if they were not throttled (during winter) |
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numbermaniac
Cruncher Australia Joined: Mar 28, 2014 Post Count: 46 Status: Offline Project Badges:
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With 3 out of 4 ARM cores running BOINC on my Android phone (1.27 GHz) it's using about 2.6 watts. At that rate you'd need about 20 of these to match your 60 W estimation for an i5.
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I am porting android os (2.3) on raspberry pi but I am getting some commands on the screen end by rainbow color screen . I changed the config text file in android os by hdmi (groups and modes) but still getting same . If you have any config text working with android os post here based on that I will change the modes and groups in hdmi.
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
If you are trying to get WCG to run on android 2.3, it won't. It needs 4.1 or newer.
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sunk818
Advanced Cruncher Joined: May 10, 2018 Post Count: 66 Status: Offline Project Badges:
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Here's another link for Rasp Pi and Android. https://www.raspberrypi.org/magpi/android-raspberry-pi/
I bought an Asus Tinker Board. Quad core 1.8Ghz. Haven't looked at actual watt usage 100% on quad core, but it runs on a USB wall adapter 5V 2.4A . Trying to get my Odroid XU4 up and running too. With all the little accessories you need to get everything working, a low end prepaid Android phone ends up being a better value in terms of price. Not sure what the RAC to watts ratio is exactly. |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I like the odroids better. Active cooling, and 8 cores. I have never done ratio comparisons on mine though. The throw away phones do well too though. I have some of each.
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