night-time auto-reboot?

Cabaniols, Sebastien Sebastien.Cabaniols at compaq.com
Tue Sep 19 04:27:51 EDT 2000



		-----Original Message-----
		From:	rossini at blindglobe.net
[mailto:rossini at blindglobe.net]
		Sent:	Monday, September 18, 2000 9:01 AM
		To:	beowulf at beowulf.org
		Subject:	night-time auto-reboot?


		Our department is picking up a few decent PC's for staff.
I'm
		wondering about the current feasibility of auto-booting in
and out of
		Windows 2000 and Linux on a set schedule (say, out of
Windows to Linux
		at 8pm, into Windows at 6am, or something like that).  We've
got a
		small cluster, and this would be just to augment that.

		Most of our jobs are migrated via MOSIX, but we are looking
at some
		PVM/MPI code as well, and with respect to the later, will we
have
		problems?  (or would it just be a matter of making sure that
the
		MPI/PVM jobs are initiated as processes on the primary
cluster
		machines, since they can migrate back to "home" when the
augmenting
		machines switch over?)

		I guess, what I'm looking for is some kind of logic for
Lilo, or even
		using something like UMSDOS to start up a Linux job (to take
over the
		system). 

		On the linux side, it is easy to make a crontab event such
as
		/sbin/lilo -R Windows; /sbin/reboot: This will force the
next reboot
		(and the next reboot only) to take the Windows argument.

		Now on the windows side, you just need to make it rebooting:
		Having Lilo configurated for a linux reboot, it should be
fine.


		Any experiences?

		best,
		-tony

		-- 
		A.J. Rossini				Rsrch. Asst. Prof.
of Biostatistics
		BlindGlobe Networks (home/default)
rossini at blindglobe.net	
		UW Biostat/Center for AIDS Research
rossini at u.washington.edu	
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