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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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Domdom95
Cruncher Joined: Nov 25, 2006 Post Count: 21 Status: Offline Project Badges: 
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Hi.
I intend to buy a tablet only for crunch, connected 24/24 and calculating. I looked at: http://www.geekbuying.com/category/Tablet-PCs...82-1-40-3-3-0-0-grid.html I would buy from the first prices. Maybe another site, I will see where is the cheapest. 1 - Do you think it is a good idea to let a tablet always on 24/24 or can I damage it and should I turn it off every night and just let it crunch say 12 hours? Again if I buy a tablet, it is just for WCG, nothing else. I was afraid the battery could explode or something like that. 2 - Say I let the tablet connected 24/24. In my results, with a 4 cores tablet, will I get 4 days of work? 3 years ago I was crunching with my mobile phone, 4 cores, it took around 30 hours to finish one work unit. After many days of almost 24/24 with my mobile always crunching and connected on usb to get energy, I could not see any gain in my results. It was like my phone, slow as hell I guess, was not taking into account in my global results. So I'm afraid to buy a tablet, let it calculate day and night and that I get no more days of work in my contribution work. I expect with a tablet to send more results but also get faster badges, 5 years, 10 years, etc... I told myself that maybe a smartphone or a tablet could not seen as a powerful device and not taken into account completely. My Intel i7-6700K with HT (4 cores and 4 logical ones), I get 6 days of work/day when I'm not using it too much. Do you think with a 4 cores windows 10 tablet I will get 4 days too or much less? Thank you very much. I'm living in France, if anyone has any idea of a good tablet not expensive, could even get 2. |
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enels
Senior Cruncher Joined: Apr 25, 2008 Post Count: 286 Status: Offline Project Badges:
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I've had a quad core tablet (RCA voyager) running for a year. Resulting in 4 years of runtime. The biggest thing you have to worry about is if your battery and charger can keep up. For some reason most tablets require a good battery even when plugged in. Note that Android tablets can only run the VINA apps.
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Eric_Kaiser
Veteran Cruncher Germany (Hessen) Joined: May 7, 2013 Post Count: 1047 Status: Offline Project Badges: 
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I wouldn't recommend these expensive tablets for crunching only.
----------------------------------------I've bought a couple of cheap android boxes 4 cores for 20 $/€ and 8 cores for 50$/€. They run 24/7 very well.  |
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KLiK
Master Cruncher Croatia Joined: Nov 13, 2006 Post Count: 3108 Status: Offline Project Badges:
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Why to buy something for results?
----------------------------------------WCG uses time for badges? So any will do... ;) |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I prefer the devices that don't require batteries, but I have several el cheapo phones that crunch (they get hot though).
----------------------------------------I purchased an odroid xu4 a while back, and it has done great. I upgraded the heatsink and fan straight out of the box (they now offer upgraded ones on the site) and built it with 120MM fans for air cooling, and it does well. There are also tons of android tv boxes that could crunch on WCG as well. They will need to have android v 4.1 or later, and an ARM v7 processor or later I believe. Someone please correct me if I am wrong, but I think it is ARM v7 (might be v6). I would look for one with google play store pre-installed, then all you have to do is plug in, install and configure boinc, and off to the races it goes. And as a bonus, you can stream to a tv. [Edit 1 times, last edit by Former Member at Jan 5, 2017 12:13:08 PM] |
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Kasey Domer
Cruncher United States Joined: Jul 24, 2013 Post Count: 44 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.  Crunchers: 1: Xeon E5-2695 v3 @ 2.5GHz turbo (14C/28T) 2: Xeon E5-2658 v3 @ 2.3GHz turbo (12C/24T) 3: Ryzen 7 1700 @ 3.675GHz OC (8C/16T) 4: Core i7-4700MQ @ 3.2GHz cTDP up (4C/8T) |
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Eric_Kaiser
Veteran Cruncher Germany (Hessen) Joined: May 7, 2013 Post Count: 1047 Status: Offline Project Badges:
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As said above I've got some android tv boxes that run with a powersupply only. They have an armlogic s912 8-core cpu.
----------------------------------------4 cores run with 2 GHz and 4 with 1 GHz, which is the reference design for little big architecture. The other 4 core have a rockchip 3229 cpu. There are two versions out there. The one I have runs with 1.5 GHz but there is also one with 2 GHz. As said above all devices are really cheap and I run them headless. |
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Perelandra
Advanced Cruncher USA Joined: Dec 22, 2014 Post Count: 91 Status: Offline Project Badges: 
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I have an NVidia Shield tablet running 2 cores 24/7 without a problem. However when you get up to 3 cores the power used just about equals the power that can be supplied to recharge the battery. I use the tablet on a daily basis so crunching on it is more of a secondary use since I have it lying around anyway. I get about 3500 to 5000 points per day. If someone is looking for a fast tablet at a good price for everyday use I would recommend this one.
----------------------------------------However I would not recommend a tablet for dedicated crunching. Even an older Core2 Duo PC can get 10,000 to 14,000 points per day. Decent modern i5 PCs can get 45,000 points per day. I would recommend just getting an older PC for cheap, or even a more recent laptop that has a broken LCD screen someone doesn't want. Maybe Eric can chime in on what his ODroids get per day. I've considered getting into those.  |
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Eric_Kaiser
Veteran Cruncher Germany (Hessen) Joined: May 7, 2013 Post Count: 1047 Status: Offline Project Badges:
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He we go (boinccredit - for wcg credit x7):
----------------------------------------odroid u3 (4 cores 1.7 GHz): 800 per day odroid xu3 lite (8 cores 1.6 GHz/1.4 GHz; 120€): 1,500 per day sunvell T95Z/T95U (8 cores 2 GHz/1 GHz; 49€): 1,000 per day scishon V88 (4 cores 1.5 GHz; 18€): 450 per day |
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fuzzydice555
Advanced Cruncher Joined: Mar 25, 2015 Post Count: 89 Status: Offline Project Badges:
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"Why to buy something for results?
----------------------------------------WCG uses time for badges? So any will do... ;)" You're wrong :) WCG uses a badge system to encourage users with slower systems/low power systems to crunch. This way an i3 notebook can "compete" with an i7 6700k. If badges were awarded for points, older/low power systems could never compete with the big rigs. The "real" work is in the points though, so you should never build/buy based on runtime only. Badges are nice to look at, I'm even proud of my badges... But only your points show how much work you've done for WCG. Moving on, I have 5 Pine A64 1GB boards, they cost 19$. Pine A64 (4 cores 1.2 GHz) - 19$ - 410 points per day / 4 watts That's 103 points/watt, so in terms of efficiency these are much better than older PCs. Efficiency is around the level of 2011v3 Xeons.  |
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