Good morning we need to launch a MPMD application with two fortran
excutables and one interpreted python (mpi4py) application.
The natural ordering in the resulting comm_world would come from
mpirun -np 4 fortranexe_1 : -np 4 python3 pyapp.py : -np 2 fortranexe_2
but openmpi seems to neglect (or loose at start time) the second fortran
executable.
Notice that the making pyapp.py executable with a shebang and avoiding
mentioning python3 does not change the behaviour).
Intelmpi can run the application.
We tried (but we would prefer not for some assumptions on the position
in the comm world) to change the program order and indeed
mpirun -np 4 fortranexe_1 : -np 2 fortranexe_2 : -np 4 python3 pyapp.py
runs to the end.
I did not find any mention in the documentation or in the forums about a
prescribed order for multilanguage applications, nor an alternative
suggested syntax.
Thank you for your help
Andrea Piacentini
(CERFACS Toulouse)
--
Andrea Piacentini
piacentini.p...@gmail.com
Tel. +39/3356007579
skype: andrea3.14
