[torqueusers] Ulimit Help

Dr. Stephan Raub raub at uni-duesseldorf.de
Mon Jun 21 14:02:50 MDT 2010


Hello,

thank you for this answer. But why are the limits set correctly, if you e.g.
restart the pbs_mom within the rc.local-file?

Stephan

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| | Dr. rer. nat. Stephan Raub
| | Dipl. Chem.
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> -----Ursprüngliche Nachricht-----
> Von: torqueusers-bounces at supercluster.org [mailto:torqueusers-
> bounces at supercluster.org] Im Auftrag von Garrick Staples
> Gesendet: Montag, 21. Juni 2010 20:19
> An: Torque Users Mailing List
> Betreff: Re: [torqueusers] Ulimit Help
> 
> If you look at the limits.conf manpage, you will see that limits.conf
> is a config file for a PAM module.  PAM is for logins. System daemons
> started from initscripts do not run under a login shell. Any child
> process of pbs_mom will also not be running under a login shell.
> 
> 
> On Mon, Jun 21, 2010 at 01:04:46PM +0530, rishi pathak alleged:
> > Hi Chris,
> >               We faced the same problem with 2.3.6. It seemed like on
> > pbs_mom startup at system boot did'nt inherited limits from
> > /etc/security/limits.conf. We verified this by submitting a
> > interactive job and listing the limits using ulimit -a. Subsequent
> > restart of pbs_mom(w/o
> > reboot) comes up with defined limits. We observed that ssh login for
> a
> > user shows the correct limits for the node in question. Next what we
> > tried was to make pbs_mom start after sshd, but the results were
> same.
> >
> > On Fri, Jun 18, 2010 at 6:35 PM, Chris Vaughan
> > <chris at adaptivecomputing.com>wrote:
> >
> > > Hi,
> > >
> > >
> > > I have a customer with the following error with ulimits for the job
> > > not being unlimited, does anyone know how to resolve this?  Do I
> > > need to have this set when pbs_server and pbs_mom starts?
> > >
> > >
> > > Thanks,
> > >
> > >
> > > We've been having problems running Fluent software at our site. It
> > > works well when running interactively, but it give errors(see
> > > attached error file), when running it in a queue. You'll see in the
> > > file attached, it complains about 'locked down' memory, which it
> > > tries to use for MPI which is using locked memory for Infiniband
> > > communications. The /etc/security/limits.conf file on all nodes
> > > reads
> > >
> > > @ *            hard    memlock         unlimited
> > > @ *            soft    memlock         unlimited
> > >
> > >
> > >
> > > --
> > >
> > > *Chris Vaughan*  |  Technical Consultant - EMEA
> > >
> > > Adaptive Computing | Mobile: +44 7800 973062 | Office: +44 1483
> > > 243578
> > >
> > > 3000 Cathedral Hill | Guildford GU2 7YB  |  United Kingdom
> > >
> > >
> > >
> > >
> > >
> > > _______________________________________________
> > > torqueusers mailing list
> > > torqueusers at supercluster.org
> > > http://www.supercluster.org/mailman/listinfo/torqueusers
> > >
> > >
> >
> >
> > --
> > Regards--
> > Rishi Pathak
> > National PARAM Supercomputing Facility Center for Development of
> > Advanced Computing(C-DAC) Pune University Campus,Ganesh Khind Road
> > Pune-Maharastra
> 
> > _______________________________________________
> > torqueusers mailing list
> > torqueusers at supercluster.org
> > http://www.supercluster.org/mailman/listinfo/torqueusers
> 
> 
> --
> Garrick Staples, GNU/Linux HPCC SysAdmin University of Southern
> California
> 
> Life is Good!




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