Chess 960 might be a possible project. On a 2 GHz machine the tasks take
around 5 minutes. So, on a 600 MHz device the tasks ought to take around
15 minutes, and my bet is that it is all logic and does not use the FPU
much if any.
jm7
Petr Hájek
<hajek.p...@gmail
.com> To
Sent by: [email protected]
<boinc_dev-bounce cc
[email protected]
u> Subject
Re: [boinc_dev] BOINC for Mobile
Phones - please test on your Java
10/28/2009 10:11 phone
AM
I agree. Of course, this is not the right case for mobile phones. I will
not
think about porting the most hardcore and intensive ones...
Comapring DNA, whole numbers, smaller molecules, ... This is all acceptable
with right dosing.
Btw. even weather could be ported to phone - every user simply count ONE
day
which should take just a few days :)).
2009/10/28, [email protected] <[email protected]>:
>
> Only a very few projects will be able to create smaller tasks.
>
> CPDN tasks cannot be reduced without shovelling about 1GB of data from
the
> device back to the server.
> s...@h tasks are already reduced to the minimum.
> ...
>
> With no FPU, the increase in time is on the order of times 1000. Which
> would mean that the crunch times would have to be reduced by 1000, or the
> deadline would have to be increased by a factor of 1000. s...@h for example
> would have to increase the deadlines from one month to 100 years. Or the
> data span would have to be reduced from 115 seconds of data to 0.1
seconds
> of data (the overlap is currently 15 seconds of data).
>
> Integer only projects such as (possibly) prime grid do not suffer from
this
> problem.
>
> Non-CPU intensive projects also do not suffer from the problem.
>
> You should look to those types of projects for possibilities.
>
>
> jm7
>
>
>
> Petr Hájek
> <hajek.p...@gmail
> .com>
To
> Sent by: [email protected]
> <boinc_dev-bounce
cc
> [email protected]
> u>
Subject
> Re: [boinc_dev] BOINC for Mobile
> Phones - please test on your Java
>
> 10/28/2009 09:57 phone
> AM
>
>
>
>
>
>
>
>
>
>
> OK, for the 3rd time:
>
> "2. There will be absolutely need for different and smaller units so it
may
> be counted in few hours / days on typical phone / PDA"
>
> 2009/10/28, [email protected] <[email protected]>:
> >
> > CPDN has long deadlines because it has correspondingly long crunch
times.
> > An 800 MHz computer with an FPU (and CPDN uses the FPU) takes well in
> > excess of 9 months to crunch the data running 24/7. A 600 MHz device
> with
> > no FPU will not finish within the lifetime of the phone - even running
> > 24/7.
> >
> > Will this always be true? I cannot be certain - ever is an awfully
long
> > time.
> >
> > Deadlines vaguely track crunch times on most projects. Long deadlines
> > usually have correspondingly long
> >
> > jm7
> >
> >
> >
> >
> > Petr Hájek
> > <hajek.p...@gmail
> >
> > .com>
> To
> > Sent by: [email protected]
> > <boinc_dev-bounce
> cc
> > [email protected]
> > u>
> Subject
> >
> > Re: [boinc_dev] BOINC for Mobile
> >
> > Phones - please test on your
Java
> >
> > 10/28/2009 09:48 phone
> > AM
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > 1. Some projects has LONG deadlines - Climate for example.
> > 2. There will be absolutely need for different and smaller units so it
> may
> > be counted in few hours / days.
> >
> > 2009/10/28, [email protected] <[email protected]>:
> > >
> > > When you are not using the keypad and the phone is not active, the
> > > processor is probably running at about 6 MHz. With no FPU.
> > >
> > > jm7
> > >
> > >
> > >
> > > "Lynn W. Taylor"
> > > <[email protected]>
> > > Sent by:
> > To
> > > <boinc_dev-bounce Carl Christensen
> > > [email protected] <[email protected]>
> > > u>
> > cc
> > >
> > > [email protected]
> > >
> > >
> > Subject
> > > 10/27/2009 02:54 Re: [boinc_dev] BOINC for
Mobile
> > > PM Phones - please test on your
> Java
> > > phone
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > I keep thinking that there are a lot of cell phones out there, and a
> lot
> > > of untapped potential.
> > >
> > > The one in my pocket (Palm Pre) is running some variant of the ARM
> > > processor at something like 600 MHz, which is a nontrivial amount of
> CPU.
> > >
> > > Palm goofed on the battery (I can go two days, tops), but the rest of
> > > the phone, including WebOS, is pretty cool.
> > >
> > > Cell phones as a group are probably second only to smart cards in the
> > > total number of available clock cycles.
> > >
> > > -- Lynn
> > >
> > > Carl Christensen wrote:
> > > > I don't quite understand the bashing of this guy's mobile project;
> > there
> > > was that "boincoid" a year or two ago which was in vogue, and IMHO
the
> > same
> > > ones bashing the "usefulness" of mobiles are the ones crowing about
how
> > > great GPU's & CUDA & Sony Playstations etc are (completely ignoring
the
> > > fact that 99.99999% of real-world science apps won't run on it). Not
> to
> > > mention that there's all sorts of dubious-benefit computer sciencey
> stuff
> > > out there trying to turn boinc into some god-awful grid mess. so I'm
> > > willing to keep an open mind about it (and GPU's & grids ;-).
> > > >
> > > >
> > > >
> > > > _______________________________________________
> > > > boinc_dev mailing list
> > > > [email protected]
> > > > http://lists.ssl.berkeley.edu/mailman/listinfo/boinc_dev
> > > > To unsubscribe, visit the above URL and
> > > > (near bottom of page) enter your email address.
> > > >
> > > _______________________________________________
> > > boinc_dev mailing list
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> > >
> > >
> > >
> > > _______________________________________________
> > > boinc_dev mailing list
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> > > To unsubscribe, visit the above URL and
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> > >
> >
> >
> >
> > --
> > S Pozdravem
> > Petr Hájek
> > _______________________________________________
> > boinc_dev mailing list
> > [email protected]
> > http://lists.ssl.berkeley.edu/mailman/listinfo/boinc_dev
> > To unsubscribe, visit the above URL and
> > (near bottom of page) enter your email address.
> >
> >
>
>
> --
> S Pozdravem
> Petr Hájek
> _______________________________________________
> boinc_dev mailing list
> [email protected]
> http://lists.ssl.berkeley.edu/mailman/listinfo/boinc_dev
> To unsubscribe, visit the above URL and
> (near bottom of page) enter your email address.
>
>
--
S Pozdravem
Petr Hájek
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