[torquedev] ulimit/setrlimit doesn't enforce RLIMIT_DATA on Linux

Christopher Samuel samuel at unimelb.edu.au
Fri Nov 19 17:52:52 MST 2010


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On 20/10/10 02:41, Eygene Ryabinkin wrote:

> resi_sum() does not use get_proc_stat(), it crawls over proc_array and
> sums up the rss usage basing on the session identifier.  You may argue
> that it is simple to escape the session.  Yes, it is, but only
> undeniable labels (like cgroups) can really help here.

Even that won't help if the MPI launcher uses SSH to farm
jobs out (such as with commercial codes like Fluent, etc).

I did try and figure out at one point if pam_torque would
be able to change the control group or cpuset of the SSH
session it was being used to authenticate/authorise, but
without success.

cheers,
Chris
- -- 
 Christopher Samuel - Senior Systems Administrator
 VLSCI - Victorian Life Sciences Computational Initiative
 Email: samuel at unimelb.edu.au Phone: +61 (0)3 903 55545
         http://www.vlsci.unimelb.edu.au/

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