I did a quick test to see if I can use Podman in combination with Open
MPI:
[test@test1 ~]$ mpirun --hostfile ~/hosts podman run
quay.io/adrianreber/mpi-test /home/mpi/hello
Hello, world (1 procs total)
--> Process # 0 of 1 is alive. ->789b8fb622ef
Hello, world (1 procs total)
-->
Adrian,
the MPI application relies on some environment variables (they typically
start with OMPI_ and PMIX_).
The MPI application internally uses a PMIx client that must be able to
contact a PMIx server
(that is included in mpirun and the orted daemon(s) spawned on the
remote hosts).
lo
Gilles,
thanks for pointing out the environment variables. I quickly created a
wrapper which tells Podman to re-export all OMPI_ and PMIX_ variables
(grep "\(PMIX\|OMPI\)"). Now it works:
$ mpirun --hostfile ~/hosts ./wrapper -v /tmp:/tmp --userns=keep-id --net=host
mpi-test /home/mpi/hello
He
Not really a relevant reply, however Nomad has task drivers for Docker and
Singularity
https://www.hashicorp.com/blog/singularity-and-hashicorp-nomad-a-perfect-fit
I'm not sure if it woul dbe easier to set up an MPI enviroment with Nomad
though
On Thu, 11 Jul 2019 at 11:08, Adrian Reber via users
