I’m afraid not. The MPI job would not be very happy to suddenly lose some nodes during execution, and relocating MPI processes during execution is something we don’t currently support.
There is work underway to integrate the RM more fully into that procedure so it could tell the MPI job to checkpoint, wait until that completed, terminate the job, and then fast-restart it on the new nodes - but that isn’t here yet. > On Apr 10, 2015, at 7:54 AM, Federico Reghenzani > <federico1.reghenz...@mail.polimi.it> wrote: > > The RM can ask for deallocation of some nodes? > > For example, mpirun asks to the RM which resources are available (let node1, > node2, node3) and spawns orted in the nodes. After some time during the > elaboration, can the RM ask to deassign node3 or reassign jobs on node3 to > node4? > > Cheers, > Federico Reghenzani > > 2015-03-26 18:09:22 GMT+06:00 Artem Polyakov <artpol84_at_[hidden]>: > > P.S. also check ESS (orte/mca/ess) for environment setup. > 2015-03-26 18:06 GMT+06:00 Artem Polyakov <artpol84_at_[hidden]>: > > > > 2015-03-26 17:58 GMT+06:00 Gianmario Pozzi <pozzigmario_at_[hidden]>: > > > >> Hi everyone, > >> I'm an italian M.Sc. student in Computer Engineering at Politecnico di > >> Milano. > >> > >> My team and I are trying to integrate OpenMPI with a real time resource > >> manager written by a group of students named BBQ ( > >> http://bosp.dei.polimi.it/ <http://bosp.dei.polimi.it/> ). We are > >> encountering some troubles, though. > >> > >> Our main issue is to understand how ORTE interacts with the resource > >> manager, which parts of the code (if any) are executed on the "slave" > >> nodes > >> and which ones on the "master". > >> We spent some time looking at the source code but we still have many > >> doubts. > >> > > > > Hello, > > check orte/mca/plm and orte/mca/ras > > PLM - process lifecycle manager > > RAS - resource allocation subsystem. > > > > In RAS mpirun detects under which RM it works and gets the allocation. > > in PLM spawn of remote processes is done. > > mpirun spawns orted daemons on the slave nodes and all the rest is done > > without RM intervention (IMHO). > > > > > >> > >> Thank you. > >> > >> _______________________________________________ > >> devel mailing list > >> devel_at_[hidden] > >> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/devel > >> <http://www.open-mpi.org/mailman/listinfo.cgi/devel> > >> Link to this post: > >> http://www.open-mpi.org/community/lists/devel/2015/03/17157.php > >> <http://www.open-mpi.org/community/lists/devel/2015/03/17157.php> > >> > > > > > > > > -- > > С Уважением, ÐŸÐ¾Ð»Ñ ÐºÐ¾Ð² Рртем Юрьевич > > Best regards, Artem Y. Polyakov > > > > -- > С Уважением, ÐŸÐ¾Ð»Ñ ÐºÐ¾Ð² Рртем Юрьевич > Best regards, Artem Y. Polyakov > _______________________________________________ > 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/2015/04/17210.php
