[gridengine users] taming qlogin

Kamel Mazouzi mazouzi at gmail.com
Mon Jun 26 12:08:14 UTC 2017


For qrsh you can check the option -now [y|n]. This option will distinguish
between batch and interactive execution.
To limit the number of interactive jobs per user we can use a global
consumable resource (with qconf -ac) attach this resource to queue or host,
add this option automatically in JSV when qlogin is invoked
and finally we can apply RQS like :   limit        users {*} queues all.q
to gloginsession=10


On Fri, Jun 23, 2017 at 7:19 PM, Ilya M <4ilya.m+grid at gmail.com> wrote:

> Hello,
> Thank you for the suggestion. I set this wrapper around qlogin in addition
> to the ssh wrapper script I already had and it worked - I now have the
> context variable I can use in JSV.
> If I do the same for qrsh, how can I distinguish interactive qrsh from a
> qrsh call in multi-node parallel job?
> Another question is how to limit the number of interactive jobs per user.
> Interactive jobs could potentially use more than one core/slot, so I am not
> sure it is possible to limit via RQL. How to let users know that they are
> limited because the already have a certain number of interactive jobs
> running?
> Thank you,
> Ilya.
> -------- Original Message --------
> Subject: Re: [gridengine users] taming qlogin
> From: Kamel Mazouzi <mazouzi at gmail.com> <mazouzi at gmail.com>
> To: Ilya <4ilya.m+grid at gmail.com> <4ilya.m+grid at gmail.com>
> Date: 6/23/17, 08:41
> Hi,
> You can use a wrapper to qlogin like this:
> qlogin -sc SGE_QLOGIN=1 $@
> and then check for that variable in JSV like this:
> var=$(jsv_get_param ac)
> if [[ $var =~ "SGE_QLOGIN=1" ]]; then
> ## this is a QLOGIN session
> ## force h_rt to 2h for example
> jsv_sub_add_param "l_hard" "h_rt" "02:00:00"
> else
>  jsv_log_info "This is a normal job"
> fi;
> Best,
> On Fri, Jun 23, 2017 at 5:24 PM, Ilya <4ilya.m+grid at gmail.com> wrote:
>> Hello,
>> I am running 6.2u5 with ssh transport for qlogin (not tight integration)
>> and users are abusing this service: run jobs for days, abandon their
>> sessions that stay opened forever, etc. So I want to implement mandatory
>> time limits for all interactive jobs and, perhaps, limit the number of
>> interactive sessions available to any user.
>> I was thinking about limiting time one of the two ways: either set h_rt
>> via JSV (server side) or by forcing all interactive jobs to a dedicated
>> queue with time limit. However, there seem to be issues with both
>> approaches.
>> There seems to be no way to reliably identify interactive job in JSV:
>> - The only telling attribute is jobname, i.e., QLOGIN or QRLOGIN. However
>> some users rename their interactive jobs, so this method will fails.
>> _______________________________________________
>> users mailing list
>> users at gridengine.org
>> https://gridengine.org/mailman/listinfo/users
> _______________________________________________
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