Why are you using system() the second time ? As you want to spawn an MPI application calling MPI_Call_spawn would make everything simpler.
George On Jul 3, 2014 4:34 PM, "Milan Hodoscek" <mi...@cmm.ki.si> wrote: > > Hi, > > I am trying to run the following setup in fortran without much > success: > > I have an MPI program, that uses mpi_comm_spawn which spawns some > interface program that communicates with the one that spawned it. This > spawned program then prepares some data and uses call system() > statement in fortran. Now if the program that is called from system is > not mpi program itself everything is running OK. But I want to run the > program with something like mpirun -n X ... and then this is a no go. > > Different versions of open mpi give different messages before they > either die or hang. I googled all the messages but all I get is just > links to some openmpi sources, so I would appreciate if someone can > help me explain how to run above setup. Given so many MCA options I > hope there is one which can run the above setup ?? > > The message for 1.6 is the following: > ... routed:binomial: connection to lifeline lost (+ PIDs and port numbers) > > The message for 1.8.1 is: > ... FORKING HNP: orted --hnp --set-sid --report-uri 18 --singleton-died-pipe 19 -mca state_novm_select 1 -mca ess_base_jobid 3378249728 > > > If this is not trivial to solve problem I can provide a simple test > programs (we need 3) that show all of this. > > Thanks, > > > Milan Hodoscek > -------------- > National Institute of Chemistry tel:+386-1-476-0278 > Hajdrihova 19 fax:+386-1-476-0300 > SI-1000 Ljubljana e-mail: mi...@cmm.ki.si > Slovenia web: http://a.cmm.ki.si > _______________________________________________ > users mailing list > us...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > Link to this post: http://www.open-mpi.org/community/lists/users/2014/07/24744.php
