Smartphone Crunching (Reprise)


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Profile Alex Storey
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Message 1321911 - Posted: 30 Dec 2012, 2:49:04 UTC

I remember one nugget of info in the original thread, and it was Raistmer saying that as long as (or especially if?) the chips become OpenCL capable it'll make more sense. To that I remember replying that "Bruce Wayne" Tegra (Tegra 4) was rumored to be OpenCL. For some reason the Wikipedia page I had linked to has no mention of OpenCL for Tegra 4 anymore, but the grapevine is buzzing:

" ...the high-end version of Tegra 4 will bring 72 cores in the GeForce GPU, without disclosing if the cores in question support CUDA or not. Remember that two years ago, Nvidia mentioned that their T40-class hardware will be fully compliant with the OpenCL and CUDA, and based on the Kepler architecture, which wasn't even announced at the time."

http://www.brightsideofnews.com/news/2012/12/18/nvidias-tegra-4-specs-leak.aspx

Will 2013 be the year smartphone crunching takes off? I guess we'll know in about 10 days:)

But until then,
Happy New Year to you all!

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Message 1321914 - Posted: 30 Dec 2012, 3:02:05 UTC
Last modified: 30 Dec 2012, 3:02:48 UTC

I didnt have a smart phone for that old thread but I do now. I still think it will be just a novelty. I left a app running by accident when i put the phone on the charger. It got hot as heck and never did charge the battery. Until the processors get a lot better and battery life is improved I dont see large scale crunching. And I would not do any on a phone anyway. Thats not why I have smart phone.
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Message 1322122 - Posted: 30 Dec 2012, 11:24:00 UTC
Last modified: 30 Dec 2012, 16:31:57 UTC

While smartphone crunching is technically possible I doubt that it is a practical proposition due to the amount of processing required to cope with a work unit and the limited battery life of a smartphone.
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Message 1322140 - Posted: 30 Dec 2012, 12:20:15 UTC - in response to Message 1322122.

LOL, yeah. When I see how quickly the battery of my Samsung gets zapped by just playing a 3D Tetris clone, or Angry Birds, I don't even want to crunch anything on it. 20 minutes of game play and a fully charged battery --coming off the USB wire-- is at 55%.
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Message 1322173 - Posted: 30 Dec 2012, 13:42:17 UTC

...but will not boinc on mobile devices be ideal for such as Quake Catcher?


Happy cool crunchin',
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Message 1322236 - Posted: 30 Dec 2012, 16:34:23 UTC

Only if you aren't jogging at the time...
Seriously smartphones sitting on desks not in bag/pockets/cars might be a way of capturing data on larger quakes. But if you didn't feel it,it wasn't a quake...
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Message 1322239 - Posted: 30 Dec 2012, 16:40:21 UTC

For the forseeable future it's pretty much a given that when smartphone/tablet crunching takes off, it'll only make sense to do so when charging the device. My only gripe with this (theoretical ATM) scenario is that these devices have integrated batteries (to help make the devices slimmer I guess). And batteries dislike heat...

I don't know if I'd be willing to fry my battery for the sake of a little bonus crunching. However if I had a device that made it semi-easy to pull out the battery (like my current dumb-phone) I'd probably make the extra effort.

A retired smartphone/tablet I'd probably leave plugged in and crunching 24/7 but that scenario is 4-5 years away, for me at least.

PS @ML1 I wonder if Quake Catcher is doable on such a highly mobile device. If it is I'd most definately run it, especially in Greece.

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Message 1322392 - Posted: 30 Dec 2012, 20:55:46 UTC

I don't know if they do crunch on smartphone here...
I have a 12year old Nokia....

Arm processor crunching at Oproject@Home, Sub-project ALX

http://oproject.info/apps.php

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Message 1322810 - Posted: 31 Dec 2012, 20:29:38 UTC - in response to Message 1322140.

LOL, yeah. When I see how quickly the battery of my Samsung gets zapped by just playing a 3D Tetris clone, or Angry Birds, I don't even want to crunch anything on it. 20 minutes of game play and a fully charged battery --coming off the USB wire-- is at 55%.

Bear in mind that a computer's USB port only provides a maximum of 500mA. If you have a wall charger for the phone, it's probably capable of supplying more current and will keep the battery charged. If the phone didn't come with one, some bluetooth devices do. A car charger also supplies enough juice.

As for heat, my phone has been overheating for almost a year just while doing things it's supposed to be able to do, sometimes even with its display off. If really necessary, I either blow cool air at it or take the back off and *carefully* dab water all over the battery. It's amazing how quickly it evaporates. Removing the battery to protect it from the heat is not an option; the phone shuts off without it, even when plugged in.

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Message 1322817 - Posted: 31 Dec 2012, 20:46:29 UTC - in response to Message 1322810.

Bear in mind that a computer's USB port only provides a maximum of 500mA. If you have a wall charger for the phone, it's probably capable of supplying more current and will keep the battery charged.

I don't play the games on the phone when it's plugged in, I play them when I'm away from home, or sitting on the toilet... Then the battery is zapped pretty quickly.

Mind, without the gaming, and just using it for phoning or having it on standby, the battery lasts pretty long. Some of my other games also zap the battery a lot less than the 3D ones.
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Message 1323279 - Posted: 1 Jan 2013, 16:28:18 UTC - in response to Message 1322817.

... I play them when I'm away from home, or ...

Oh no!!!

Intense fire-fight, a Zaphod three fingered click required to save the game and...


Kersplosh!

Fizz crackle gurgle gurgle...

:-(


Is that why there must be no mains outlets or mains devices within arms reach...?

;-)


Keep searchin',
Martin

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Message 1323703 - Posted: 2 Jan 2013, 19:04:00 UTC

Well how about this

Ubuntu for smartphones
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Message 1323722 - Posted: 2 Jan 2013, 19:37:39 UTC

The client already exists for Andoid: NativeBOINC. I'm not sure what projects are being run, but the stats they have on the site show some devices with a higher RAC than most of my machines.
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Message 1323729 - Posted: 2 Jan 2013, 19:51:48 UTC - in response to Message 1323722.

The client already exists for Andoid: NativeBOINC. I'm not sure what projects are being run, but the stats they have on the site show some devices with a higher RAC than most of my machines.

Interesting -- I have temporary access to an ARM cluster...
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Message 1323934 - Posted: 2 Jan 2013, 23:51:16 UTC - in response to Message 1323722.

The client already exists for Andoid: NativeBOINC. I'm not sure what projects are being run, but the stats they have on the site show some devices with a higher RAC than most of my machines.

Milkyway for example, see this thread. PrimeGrid runs fine AFAIK and WUProp runs also on Android and that gives us a short list of projects that run on ARM/Android.
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Message 1324044 - Posted: 3 Jan 2013, 8:52:29 UTC

I'm running MilkyWay@home on G-tablet, WUprops and SubsetSum on Samsung mini phone.
NativeBOINC client is very nice and convenient BOINC implementation for Android. And fully functional already.

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Message 1324110 - Posted: 3 Jan 2013, 14:09:02 UTC - in response to Message 1323934.

The client already exists for Andoid: NativeBOINC. I'm not sure what projects are being run, but the stats they have on the site show some devices with a higher RAC than most of my machines.

Milkyway for example, see this thread. PrimeGrid runs fine AFAIK and WUProp runs also on Android and that gives us a short list of projects that run on ARM/Android.

I ran some Milkyway & Primegrid on my phone when I first tested the client a while back. I didn't have any issues with my old MyTouch 3G Slide. Looking further into that stats list the project SubsetSum@Home looks to be the one cranking out the highest RAC for these devices, or the users are dedicating most of their time to that project for these devices.
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Message 1324131 - Posted: 3 Jan 2013, 15:43:12 UTC - in response to Message 1322810.
Last modified: 3 Jan 2013, 15:44:11 UTC

Bear in mind that a computer's USB port only provides a maximum of 500mA. If you have a wall charger for the phone, it's probably capable of supplying more current...


Note that by its specification USB 3.0 ports can supply up to 900 mA when transferring data, and 1.5 A when in "battery charge" mode.
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Message 1324149 - Posted: 3 Jan 2013, 16:31:52 UTC - in response to Message 1324131.

Bear in mind that a computer's USB port only provides a maximum of 500mA. If you have a wall charger for the phone, it's probably capable of supplying more current...


Note that by its specification USB 3.0 ports can supply up to 900 mA when transferring data, and 1.5 A when in "battery charge" mode.

The current battery charge specification states 5A as the maximum. However the specification sheets for Molex's micro USB connectors state they have a maximum capacity of 1.8A. Which is also the maximum capacity stated in the old Battery Charging Specification from '07.
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Message 1325511 - Posted: 7 Jan 2013, 14:17:20 UTC

Meh... Sorry guys, false alarm:

"The GPU is non-unified. This almost certainly excludes OpenCL..."

-Ryan Smith (AnandTech writer, response from comments section)

http://www.anandtech.com/show/6550/more-details-on-nvidias-tegra-4-i500-5th-core-is-a15-28nm-hpm-ue-category-3-lte

PS. Welcome back Mr Spoons:)

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