[Beowulf] Users abusing screen

Christopher Samuel samuel at unimelb.edu.au
Mon Oct 24 18:48:44 EDT 2011

Hash: SHA1

On 22/10/11 00:10, Prentice Bisbal wrote:

> I have a question that isn't directly related to clusters, but I suspect
> it's an issue many of you are dealing with are dealt with: users using
> the screen command to stay logged in on systems and running long jobs
> that they forget about. Have any of you experienced this, and how did
> you deal with it?

Hmm, any way of making a local version of screen which
puts all the processes into a cpuset or control group
so you can easily distinguish between ones in screen
and outside of it ? Perhaps even doing it with a wrapper
if you didn't want to build a modified version ?

That way you get to restrict the number of cores they
can monopolise..

Of course a user could get around it by building their
own copy, but at least then you'd be able to see that..

- -- 
    Christopher Samuel - Senior Systems Administrator
 VLSCI - Victorian Life Sciences Computation Initiative
 Email: samuel at unimelb.edu.au Phone: +61 (0)3 903 55545

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