[Beowulf] shared memory versus MPI and bootless boot
jamesjamiejones at aol.com
Thu Jun 29 05:20:06 EDT 2006
> Mark Hahn wrote:
> > > btw does that 'boot over network means i need a 16 node hub for
100 mbit and connect all the machines besides the quadrics network also
to 100 mbit?
> >sure, you need some sort of ethernet. doesn't have to be a 16pt
switch(please don't say that you actually have a hub!)
> Heh, heh, heh..
> I have a box of Artisoft 2Mbps NICs out in the garage.
> Or, maybe, some of those NE1000 coax adapters. I have lots of old
> coax, a bag full of connectors, a crimper, and I'm not afraid to use
> Hey, it's only to boot.
assuming that you boot up to 4 at a time... for power distribution and
that, how much does booting over the network require...
if your ram disk or local storage is 128MB, over a 2Mbps connect, i make
it 8 mins, nearer 9 to load which is... urm slow.
again this for a 100Mbps hub you would get 10.24 seconds per node.
so assuming that you dont have any more than one node failing every 11
seconds.. a 100Mbps hub would do adequately.
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