[OMPI users] Creating An MPI Job from Procs Launched by a Different Launcher

[Saliya Ekanayake via users]

Hi,

I am trying to run an MPI program on a platform that launches the processes
using a custom launcher (not mpiexec). This will end up spawning N
processes of the program, but I am not sure if MPI_Init() would work or not
in this case?

Is it possible to have a group of processes launched by some other means to
be tied into an MPI communicator?

Thank you,
Saliyaf