Yes - but the processes must stay in the same location
> On Apr 13, 2015, at 12:02 PM, Federico Reghenzani
> <federico1.reghenz...@mail.polimi.it> wrote:
>
> Thank you.
>
> And, to workaround, is it possible to temporary suspend processes on a node
> and later resume it (requested by RM)? I saw in the code that orted can
> receive SIGTSTP and SIGCONT to suspend/resume processes.
>
>
> Cheers,
> Federico Reghenzani
>
> 2015-04-10 16:58 GMT+02:00 Ralph Castain <r...@open-mpi.org
> <mailto:r...@open-mpi.org>>:
> 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
>> <mailto: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.
>> >>
>> >> _______________________________________________
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>> >> 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
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>
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