ARM motherboards

[rihoward1 at gmail.com]

Sameer,

I see you already found a mention of MPICH2 .  Coincidentally  was going suggest this coming Saturday as something to demonstrate at OLPC-SF.
http://www.mcs.anl.gov/research/projects/mpich2/

http://www.mcs.anl.gov/research/projects/mpich2/documentation/files/mpich2-1.4.1-installguide.pdf

I know it is outside the scope of OLPC but it would be interesting to see what this type of message passing interface could do on a group of XOs.

Robert



On Sep 12, 2012, at 9:22 AM, Sameer Verma wrote:

> Something like this: http://paritynews.com/hardware/item/302-engineers-build-supercomputer-using-raspberry-pi-lego
> 
> On Sep 11, 2012 10:43 PM, "Sameer Verma" <sverma at sfsu.edu> wrote:
> On Tue, Sep 4, 2012 at 9:43 PM, John Watlington <wad at laptop.org> wrote:
> >
> > On Sep 4, 2012, at 10:47 PM, Sameer Verma wrote:
> >
> >> Hi gang!
> >>
> >> http://blog.laptop.org/2012/09/04/are-you-working-with-xo-laptops-that-need-an-upgrade/
> >>
> >> So, is there a minimum number of motherboards that one has to buy?
> >> Pricing?
> >
> > Both answers should be available from the email listed in the blog:
> > countries at laptop.org.
> >
> >> Any other details?
> >
> > We've supported this from the beginning by design.   Kits have been available
> > as spare parts for deployments to purchase.  Upgrading an XO-1 to an XO-1.5
> > or higher motherboard requires the insertion of a small metal bracket to hold the
> > WLAN card.   The XO-1.5/1.75 chassis are mechanically identical.
> > Upgrading an earlier laptop to an XO-4 motherboard will require a
> > small rubber piece inserted to change the size of one chassis hole
> > from USB to micro HDMI.
> >
> > Unfortunately, the mechanics of XO-4 Touch mean it cannot be retrofitted.
> > You can get the higher performance by upgrading to an XO-4, but sadly
> > no multi-touch support.
> >
> > A kit includes all the parts needed to upgrade a particular laptop model.  In
> > addition to a motherboard (if XO-4 with an internal connector missing)
> > this generally includes a new heat spreader, a WLAN card (if needed), and
> > conductive foam/tape as needed to improve the ESD shielding of the earlier
> > chassis.   We do perform some testing of older laptops upgraded to each
> > new motherboard design in order to construct appropriate upgrade kits.
> >
> > Cheers,
> > wad
> >
> >
> >
> 
> Thanks for the details.
> 
> I was walking through a replacement workflow in my mind for my Jamaica
> and India projects, and I realized that if/once the upgrades are done,
> one would be left with several older working motherboards. What's to
> become of these? If someone could design a chassis to hold a bunch of
> boards together...imagine a Beowulf cluster of these! (sorry, couldn't
> resist).
> 
> "Is that a lunch box? No, it's my Beowolf cluster. Can I compute
> something for you?"
> 
> cheers,
> Sameer
> _______________________________________________
> Devel mailing list
> Devel at lists.laptop.org
> http://lists.laptop.org/listinfo/devel

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.laptop.org/pipermail/devel/attachments/20120912/1b607c90/attachment.html>