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World Community Grid Forums
Category: Community
Forum: Hardware Chat Room
Thread: Tablets and results per day |
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Thread Status: Active Total posts in this thread: 17
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MrHasselblad
Cruncher Joined: Dec 20, 2014 Post Count: 42 Status: Offline Project Badges: 
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As a hardware reseller and also custom builder... Let me clearly stress to everyone. If you go with a tablet for crunching; do not go with Hewlett Packard.
Because with HP tablets; both the cases and a number of components in the physical hardware simply cannot handle the continual use. As I've personally observed - HP tablets on extended use pose a GRAVE fire hazard |
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fuzzydice555
Advanced Cruncher Joined: Mar 25, 2015 Post Count: 89 Status: Offline Project Badges: 
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Every single tablet and phone is a fire hazard. None of them were designed for 24/7 crunching.
----------------------------------------The constant charge/discharge of the battery is the problem here. It causes a good amount of heat, which the device cannot dissipate. BOINC even has a setting to stop crunching after the battery temperature reaches a certain level, to prevent battery damage or even an explosion. Depending on how good your battery/phone is, it may work for years. After two batteries inflated to 2x their normal size, I gave up on phone crunching. You can get a Pine64 or Android TV box for the same price or less, those don't have batteries.  [Edit 1 times, last edit by fuzzydice555 at Jan 26, 2017 7:50:42 PM] |
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MrHasselblad
Cruncher Joined: Dec 20, 2014 Post Count: 42 Status: Offline Project Badges:
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I've never seen more of a fire hazard in any tablet then what I've witnessed with numerous HP tablets. Yet on the flip side of the scale I've seen tablets even used for BitCoin mining; hooked up and running all out 24/7. Sure they don't generate much in the way of BitCoin, but the hardware still pays for itself inside of two years.
The HP tablets I've seen can fail well within warranty. Just how bad is it; about as common as the Samsung issue - just not as many sold or "out there" in the market. |
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enels
Senior Cruncher Joined: Apr 25, 2008 Post Count: 286 Status: Offline Project Badges:
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The RCA Cambio is $108 at walmart etc. Windows 10. Has an Intel Atom that turbos up to 1866 MHz. About 800 ppd at 4-6 watts. I don't know if the keyboard screen connection is robust. I mention it only as a 24/7 cruncher.
----------------------------------------Edit: 4 cores [Edit 1 times, last edit by enels at Jan 29, 2017 12:46:07 AM] |
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NixChix
Veteran Cruncher United States Joined: Apr 29, 2007 Post Count: 1187 Status: Offline Project Badges: 
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I set an old phone and tablet into service as crunchers. Didn't cost me a dime. I've told friends that when they retire their old phone send it to retire on my crunch farm. I did notice a Samsung phone that started bloating so I pulled it from service. I have the battery sitting here on my desk. I'll see if I can find a replacement.
----------------------------------------I also got a 2-core Android phone from Walmart for $20 to see if that cheap a device would actually work. It did and still does. Cheers   |
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NixChix
Veteran Cruncher United States Joined: Apr 29, 2007 Post Count: 1187 Status: Offline Project Badges:
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Here's yet another exhibit on why I'm not fond of WCG's badge system. Badges are cool to look at, but a device's indicated runtime is NOT a good indicator of how much work the device is actually doing. It multiplies the calendar day by the core count, but takes no consideration of how much work each core is actually doing, and thus how much work a system as a whole is doing. Runtime would indicate that a relatively modern smartphone is doing the same amount of work as a desktop computer running an i5-6600K, which is absurd. If badges are all you care about, going the Android tablet/mini PC route isn't a bad option, but if you actually care about how much work is being done, I'd save a few more bucks and go with something with a little more oomph, unless you can find a killer deal on a tablet or something. This issue has been discussed many times. The problem is that for whatever reason the different projects do not yield the same points per hour on the same system. Crunchers would gravitate to the projects that produced the best yield. Time was determined to be the best gauge that is available. The other statistic, number of result returned, certainly would not be a good basis to award badges. Cheers |
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enels
Senior Cruncher Joined: Apr 25, 2008 Post Count: 286 Status: Offline Project Badges:
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I don't know if it is still relevant, but the first Intel compute sticks had a fan. I would avoid anything with a fan.
An advantage of tablets/phones/sticks is they are generally very efficient electrically compared to Intels Core architecture and presumably AMD. We shall see about AMD's RyZen soon. Obviously the WCG doesn't care if you have 10 phones or one i7. Another route to energy efficiency is 2P and 4P Xeons and Opterons. |
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