[ale] Cluster software for Raspberry Pi?

Jeff Hubbs jhubbslist at att.net
Fri Jul 3 20:19:27 EDT 2015

And remember that Mosix/OpenMosix was but *a certain kind* of 
clustering. So is distcc, for a very specific problem space.

These days - or at least as of 2011, which was the last time I had my 
hands on/in cluster hardware - what makes a cluster a cluster seems to 
be 1) application software that uses some kind of message-passing 
library (like MPI IIRC) 2) optionally (it depends on the problem space), 
a cluster-aware shared filesystem (possibly to include one that combines 
volumes on each node, seeing as they'll likely have perfectly good disk 
controllers and spaces to put drives) 3) optionally (likewise), an 
appropriate network fabric or two (if Ethernet alone won't cut it).

A few years ago I had two Gentoo Linux machines connected to a third via 
AoE but since at the time a cluster-aware FS wasn't available without 
great pain, I just formatted the AoE volume with ext2. Worked great on 
both mounted machines...until one of them wrote, at which time things 
got a little crazy. :)

On 7/3/15 12:10 PM, Jim Kinney wrote:
> Openmosix is dead. However, Mosix is now $0.
> On Jul 3, 2015 11:35 AM, "Raj Wurttemberg" <rajaw at c64.us 
> <mailto:rajaw at c64.us>> wrote:
>     So... The parts are ordered Raspberry Pi cluster. I'm going to
>     start with just two nodes this month.  Now I just need to find a
>     good cluster program. I would like for the systems to act as one
>     distributed or parallel processing computer but I'm OK to start
>     with a high availability cluster while I figure this stuff out.  I
>     didn't setup our clusters at work (running VCS) so I'm reading up
>     on Fencing and a few other tidbits.
>     Cluster software I have located so far:
>     - Pacemaker
>     http://wiki.clusterlabs.org/
>     - HTCondor
>     http://research.cs.wisc.edu/htcondor/
>     - GreenTea Software
>     http://www.greenteatech.com/
>     - grun
>     https://github.com/earonesty/grun/wiki
>     - mpi4py
>     http://mpi4py.scipy.org/
>     - openMosix
>     https://en.wikipedia.org/wiki/OpenMosix (Shut down in 2008?)
>     - etcd
>     https://github.com/coreos/etcd/blob/master/README.md
>     - serf
>     https://www.serfdom.io/
>     - Beowulf
>     http://yclept.ucdavis.edu/Beowulf/aboutbeowulf.html
>     This is just about to get fun. :)
>     /Raj
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