> On Nov 5, 2017, at 6:48 AM, Florian Lindner <mailingli...@xgm.de> wrote: > > Am 04.11.2017 um 00:05 schrieb r...@open-mpi.org <mailto:r...@open-mpi.org>: >> Yeah, there isn’t any way that is going to work in the 2.x series. I’m not >> sure it was ever fixed, but you might try the latest 3.0, the 3.1rc, and >> even master. >> >> The only methods that are known to work are: >> >> * connecting processes within the same mpirun - e.g., using comm_spawn > > That is not an option for our application. > >> * connecting processes across different mpiruns, with the ompi-server daemon >> as the rendezvous point >> >> The old command line method (i.e., what you are trying to use) hasn’t been >> much on the radar. I don’t know if someone else has picked it up or not... > > What do you mean with "the old command line method”. > > Isn't the ompi-server just another means of exchanging port names, i.e. the > same I do using files?
No, it isn’t - there is a handshake that ompi-server facilitates. > > In my understanding, using Publish_name and Lookup_name or exchanging the > information using files (or command line or stdin) shouldn't have any > impact on the connection (Connect / Accept) itself. Depends on the implementation underneath connect/accept. The initial MPI standard authors had fixed in their minds that the connect/accept handshake would take place over a TCP socket, and so no intermediate rendezvous broker was involved. That isn’t how we’ve chosen to implement it this time around, and so you do need the intermediary. If/when some developer wants to add another method, they are welcome to do so - but the general opinion was that the broker requirement was fine. > > Best, > Florian > > >> Ralph >> >>> On Nov 3, 2017, at 11:23 AM, Florian Lindner <mailingli...@xgm.de> wrote: >>> >>> >>> Am 03.11.2017 um 16:18 schrieb r...@open-mpi.org: >>>> What version of OMPI are you using? >>> >>> 2.1.1 @ Arch Linux. >>> >>> Best, >>> Florian >>> _______________________________________________ >>> users mailing list >>> users@lists.open-mpi.org >>> https://lists.open-mpi.org/mailman/listinfo/users >> >> _______________________________________________ >> users mailing list >> users@lists.open-mpi.org >> https://lists.open-mpi.org/mailman/listinfo/users >> > _______________________________________________ > users mailing list > users@lists.open-mpi.org <mailto:users@lists.open-mpi.org> > https://lists.open-mpi.org/mailman/listinfo/users > <https://lists.open-mpi.org/mailman/listinfo/users>
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