Short answer is yes, but it it a bit complicated to do. On Jan 25, 2022, at 12:28 PM, Saliya Ekanayake via users <users@lists.open-mpi.org <mailto:users@lists.open-mpi.org> > wrote:
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
