[Beowulf] LXD containers for cluster services and cgroups?

[Josh Catana]

I know they have a canned scheduler hook to run docker. If you're familiar
with python modifying their code to run singularity shouldn't be difficult.
I rewrote their hook to operate in my environment pretty easily.

On Jun 16, 2017 4:29 AM, "John Hearns" <hearnsj at googlemail.com> wrote:

> Lance, thankyou very much for the reply. I will look at Docker for those
> 'system' type tasks also.
>
> Regarding Singularity does anyone know much about Singularity integration
> with PBSPro?
> I guess I could actually ask Altair....
>
>
> On 16 June 2017 at 01:30, Lance Wilson <lance.wilson at monash.edu> wrote:
>
>> Hi John,
>> In regards to your Singularity question we are using cgroups for the
>> containers. Mostly the containers are used in Slurm jobs which creates the
>> appropriate cgroups. We are also using the gpu driver passthrough
>> functionality of Singularity now for our machine learning and cryoem
>> processing containers which have the cgroups applied to gpus.
>>
>> Back to your systems containers questions many of our systems have been
>> put into docker containers as they run on same/similar operating system and
>> still need root to function correctly. Pretty much every new system thing
>> we do is scripted and put into a container so that we can recover quickly
>> in an outage scenario and move around things as part of our larger cloud
>> (private and public) strategy.
>>
>> Cheers,
>>
>> Lance
>> --
>> Dr Lance Wilson
>> Senior HPC Consultant
>> Ph: 03 99055942 (+61 3 99055942 <+61%203%209905%205942>
>> Mobile: 0437414123 (+61 4 3741 4123)
>> Multi-modal Australian ScienceS Imaging and Visualisation Environment
>> (www.massive.org.au)
>> Monash University
>>
>> On 15 June 2017 at 20:06, John Hearns <hearnsj at googlemail.com> wrote:
>>
>>> I'm not sure this post is going to make a lot of sense. But please bear
>>> with me!
>>> For applications containers are possible using Singularity or Docker of
>>> course.
>>>
>>> In HPC clusters we tend to have several 'service node' activities, such
>>> as the cluster management/ head node, perhaps separate provisioning nodes
>>> to spread the load, batch queue system masters, monitoring setups, job
>>> submission and dedicated storage nodes.
>>>
>>> These can all of course be run on a single cluster head node in a small
>>> setup (with the exception of the storage nodes).  In a larger setup you can
>>> run these services in virtual machines.
>>>
>>> What I am asking is anyone using technologies such as LXD containers to
>>> run these services?
>>> I was inspired by an Openstack talk by James Page at Canonical, where
>>> all the Opestack services were deployed by Juju charms onto LXD containers.
>>> So we pack all the services into containers on physical server(s) which
>>> makes moving them or re-deploying things very flexible.
>>> https://www.youtube.com/watch?v=5orzBITR3X8
>>>
>>> While I'm talking abotu containers, is anyone deploying singularity
>>> containers in cgroups, and limiting the resources they can use (I'm
>>> specifically thinking of RDMA here).
>>>
>>>
>>>
>>> ps. I have a terrible sense of deja vu here... I think I asked the
>>> Singularity question a month ago.
>>> I plead insanity m'lord
>>>
>>>
>>>
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>>
>
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