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Subject: Re: [OMPI users] cluster with iOS or Android devices?
From: shiny knight (theshinyknight_at_[hidden])
Date: 2012-12-02 02:37:09


On Dec 1, 2012, at 1:37 PM, Reuti wrote:

> Am 30.11.2012 um 07:16 schrieb shiny knight:
>
>> Thanks for all your replies.
>>
>> As now I have access to 3 iOS devices and 1 Android, so if possible I would be oriented to pursue more the iOS route.
>>
>> So it seems that there is not yet a simple way to do so on these devices (Thanks for the paper posted Dominik); I will have to look deeper in that project that you mentioned and wait for some official release (at least for the Android side)
>>
>> I may install linux distro on a virtual machine; mostly I work on OSX so it should not be that bad (OSX allows me to work with both Android and iOS hassle free; that's why I had the thought to use my devices for MPI).
>>
>> Beatty: My idea is to use the devices only when plugged in; I was reading a paper about how to use MPI and dynamically change the number of nodes attached, while crunching data for a process. So it would be possible to add and remove nodes on the fly, and was trying to apply it to a portable device (http://www.cs.rpi.edu/~szymansk/papers/ppam05.pdf) before realizing that there is no MPI implementation for them.
>
> NB: AFAICS this paper refers to the IOS from Cisco, not iOS from Apple.

I am aware of that :) I was more interested in the whole concept behind it; it is a good starting point (then it is a matter to see how feasible it is to put it in practice on iOS and Android)

>
> -- Reuti
>
>
>> I would never envision a system where a user has a device in his pocket that is actually doing "something" behind is back...mine was a simple issue with having devices sitting on my desk, which I use to test my apps, and I could use these devices in a more productive way, while I have them tethered to my main machine (which is the main server where MPI development is done).
>>
>> Would you mind elaborate on the approach that you mentioned? I never used Xgrid, so I am not sure about how your solution would work.
>>
>> Thanks!
>>
>> Lou
>>
>>
>> On Nov 29, 2012, at 4:14 PM, Beatty, Daniel D CIV NAVAIR, 474300D wrote:
>>
>>> Greetings Ladies and gentlemen,
>>> There is one alternative approach and this a psuedo-cloud based MPI. The
>>> idea is that MPI node list is adjusted via the cloud similar to the way
>>> Xgrid's Bonjour used to do it for Xgrid.
>>>
>>> In this case, it is applying an MPI notion to the OpenCL codelets. There
>>> are obvious issues with security, battery life, etc. There is considerable
>>> room for discussion as far expectations. Do jobs run free if the device is
>>> plugged in? If the device in the pocket, can the user switch to power
>>> conservation/ cooler pockets? What constitutes fairness? Do owners have a
>>> right to be biased in judgement? These are tough questions that I think I
>>> will have to provide fair assurances for. After all, everyone likes to
>>> think they are control of what they put in their pocket.
>>>
>>> V/R,
>>> Dan
>>>
>>>
>>> On 11/28/12 3:06 PM, "Dominik Goeddeke"
>>> <dominik.goeddeke_at_[hidden]> wrote:
>>>
>>>> shameless plug:
>>>> http://www.mathematik.tu-dortmund.de/~goeddeke/pubs/pdf/Goeddeke_2012_EEV.pdf
>>>>
>>>> In the MontBlanc project (www.montblanc-project.eu), a lot of folks from
>>>> all around Europe look into exactly this. Together with a few
>>>> colleagues, we have been honoured to get access to an early prototype
>>>> system. The runs for the paper above (accepted in JCP as of last week)
>>>> have been carried out with MPICH2 back in June, but OpenMPI also worked
>>>> flawlessly except for some issues with SLURM integration at the time we
>>>> did those tests.
>>>>
>>>> The bottom line is: The prototype machine (128 Tegra2's) ran standard
>>>> ubuntu, and since Android is essentially Linux, it should not be tooooo
>>>> hard to get the system you envision up and running, Shiny Knight.
>>>>
>>>> Cheers,
>>>>
>>>> Dominik
>>>>
>>>>
>>>> On 11/29/2012 12:00 AM, Vincent Diepeveen wrote:
>>>>> You might want to post in beowulf mailing list see cc
>>>>> and you want to install linux of course.
>>>>>
>>>>> OpenFabrics releases openmpi, yet it only works at a limited number of
>>>>> distributions - most important is having
>>>>> the correct kernel (usually old kernel).
>>>>>
>>>>> I'm gonna try get it to work at debian soon.
>>>>>
>>>>>
>>>>>
>>>>> On Nov 28, 2012, at 11:50 PM, shiny knight wrote:
>>>>>
>>>>>> I was looking for some info about MPI port on iOS or Android devices.
>>>>>>
>>>>>> I have some old devices that may result useful, if I could be able to
>>>>>> include them in my computation scheme.
>>>>>>
>>>>>> OpenCL runs on iOS and Android, so I was wondering if there is any
>>>>>> way to have an old iPhone/phone or iPad/tablet to run MPI.
>>>>>>
>>>>>> Tried to look everywhere, but I didn't find anything that says that
>>>>>> it is possible, nor I've found any practical example.
>>>>>>
>>>>>> Thanks!
>>>>>> _______________________________________________
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>>>>>> users_at_[hidden]
>>>>>> http://www.open-mpi.org/mailman/listinfo.cgi/users
>>>>>
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