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" <sve...@sfsu.edu> wrote: > On Tue, Sep 4, 2012 at 9:43 PM, John Watlington <w...@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: > > countr...@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@lists.laptop.org > http://lists.laptop.org/listinfo/devel
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