Re: [External] Re: docker containerizer with nvidia-docker

[Huadong Liu]

Hi Ben, thanks for pointing me to the docker containerizer ticket. I do see
the value of UCR.

Since nvidia-docker already takes care of mounting the driver etc., if we
use the "--docker=nvidia-docker" agent option to replace the docker command
with the nvidia-docker command, GPU support with the docker containerizer
seems trivial. Did I miss anything?

On Thu, Apr 4, 2019 at 8:00 PM Benjamin Mahler  wrote:

> The "UCR" (aka mesos containerizer) and "Docker containerizer" are two
> different containerizers that users tend to choose between. UCR is what
> many of our serious users rely on and so we made the investment there
> first. GPU support for the docker containerizer was also something that was
> planned, but hasn't been prioritized:
> https://issues.apache.org/jira/browse/MESOS-5795
>
> These days, many of our users use Docker images with UCR (i.e. bypassing
> the need for the docker daemon).
>
> Maybe the containerization devs can chime in here I'm in saying anything
> inaccurate or to shed some light on where things are headed.
>
> On Wed, Apr 3, 2019 at 2:21 PM Huadong Liu  wrote:
>
> > Hi,
> >
> > Nvidia GPU support in Mesos/Marathon mandates the mesos containerizer
> > <
> >
> https://github.com/mesosphere/marathon/blob/master/src/main/scala/mesosphere/marathon/state/AppDefinition.scala#L557
> > >
> >  which "mimics" nvidia-docker.
> >  Can someone
> > help me understand why docker containerizer with agent option
> > "--docker=nvidia-docker" wasn't the choice? Thank you!
> >
> > --
> > Huadong
> >
>

Re: docker containerizer with nvidia-docker

[Benjamin Mahler]

The "UCR" (aka mesos containerizer) and "Docker containerizer" are two
different containerizers that users tend to choose between. UCR is what
many of our serious users rely on and so we made the investment there
first. GPU support for the docker containerizer was also something that was
planned, but hasn't been prioritized:
https://issues.apache.org/jira/browse/MESOS-5795

These days, many of our users use Docker images with UCR (i.e. bypassing
the need for the docker daemon).

Maybe the containerization devs can chime in here I'm in saying anything
inaccurate or to shed some light on where things are headed.

On Wed, Apr 3, 2019 at 2:21 PM Huadong Liu  wrote:

> Hi,
>
> Nvidia GPU support in Mesos/Marathon mandates the mesos containerizer
> <
> https://github.com/mesosphere/marathon/blob/master/src/main/scala/mesosphere/marathon/state/AppDefinition.scala#L557
> >
>  which "mimics" nvidia-docker.
>  Can someone
> help me understand why docker containerizer with agent option
> "--docker=nvidia-docker" wasn't the choice? Thank you!
>
> --
> Huadong
>