Sure, we can do this. Open MPI's support of various run-time systems is based
on a series of plugins to our run-time later (the Open MPI Run-Time
Environment, frequently abbreviated ORTE).
You can find details about creating new plugins (aka "components", in Open MPI
parlance) on this wiki page:
https://svn.open-mpi.org/trac/ompi/wiki/devel/CreateComponent
Open MPI v1.4 is a continuation of the v1.3 series; you might want to upgrade
to the latest-n-greatest, but it's not strictly necessary if you don't need to.
You probably need to create 2 or 3 components in the 1.3/1.4 series:
- orte/mca/ess: Environment-Specific Services
- orte/mca/plm: Process Launch Manager
- orte/mca/ras: Resource Allocation Subsystem
Look at the corresponding plugin API header file for each framework (i.e.,
orte/mca/ess/ess.h, orte/mca/plm/plm.h, and orte/mca/ras/ras.h) for the details
of what the components of each type need to provide.
Then look at examples provided by the other components -- e.g., if your
internal job scheduler is something like the SLURM model, look at
orte/mca/[ess,plm,ras]/slurm. If it's something like rsh, then look at
orte/mca/plm/rsh and (I think?) orte/mca/ess/env (there is no RAS module for
rsh because there's no back-end run-time system API that tells OMPI what
hostnames to use).
Does that help?
On Feb 22, 2011, at 7:10 PM, Tony Lam wrote:
> Hi,
>
> I'm looking into supporting running OMPI jobs on our internal compute farms,
> specially we'd like to schedule and launch the jobs under the control of an
> internal resource manager that we developed. My reading so far indicated this
> can be achieved with some orted/plm plug-in (preferred over rsh/ssh), I'll
> appreciate if someone can give me suggestion on what exact plug-ins should be
> provided and what interfaces are expected from the plug-ins, I didn't find
> much info on this with my search on the mailing list and OMPI docs.
>
> Currently we have ompi v1.3, we can upgrade to a newer version if needed.
>
> Thanks.
>
> Tony
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