Hi Marc, OpenLava is based on a pretty old version of LSF (4.x if i remember correctly) and i do not think LSF had support for parallel jobs tight integration at that time.
my understanding is that basically, there is two kind of direct integration : - mpirun launch: mpirun spawns orted via the API provided by the batch manager - direct launch: the mpi tasks are launched directly from the script/command line and no mpirun/orted is involved at that time, it works with SLURM and possibly other PMI capable batch manager i think OpenLava simply gets a list of hosts from the environment, build a machinefile, pass it to mpirun that spawns orted with ssh, so this is really loose integration. OpenMPI is based on plugins, so as long as the queing system provides an API to start/stop/kill tasks, mpirun launch should not be a huge effort. Are you aware of such an API provided by OpenLava ? Cheers, Gilles On 2014/11/18 16:31, Marc Höppner wrote: > Hi list, > > I have recently started to wonder how hard it would be to add support for > queuing systems to the tight integration function of OpenMPI (unfortunately, > I am not a developer myself). Specifically, we are working with OpenLava > (www.openlava.org), which is based on an early version of Lava/LSF and open > source. It’s proven quite useful in environments where some level of LSF > compatibility is needed, but without actually paying for a (rather pricey) > LSF license. > > Given that openLava shares quite a bit of DNA with LSF, I was wondering how > hard it would be to add OL tight integration support to OpenMPI. Currently, > OL enables OpenMPI jobs through a wrapper script, but that’s obviously not > ideal and doesn’t work for some programs that have MPI support built-in (and > thus expect to be able to just execute mpirun). > > Any thoughts on this would be greatly appreciated! > > Regards, > > Marc > > Marc P. Hoeppner, PhD > Team Leader > BILS Genome Annotation Platform > Department for Medical Biochemistry and Microbiology > Uppsala University, Sweden > marc.hoepp...@bils.se > > _______________________________________________ > devel mailing list > de...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/devel > Link to this post: > http://www.open-mpi.org/community/lists/devel/2014/11/16312.php
