Ralph,
i (re)discovered an old and odd behaviour in v1.10, which was discussed
in https://github.com/open-mpi/ompi-release/pull/664
when running
mpirun --host xxx ...
mpirun v1.10 assumes one slot per host.
consequently, on my vm with 4 cores
mpirun -np 2 ./helloworld_mpi
works fine
but
mpirun -np 2 --host localhost ./helloworld_mpi
fails with the following error message
"There are not enough slots available ..."
if i understand correctly, and thought this is a different behaviour
from v1.8, this is compliant with the definition of the --host option.
it seems you were open to some change.
did you have time to think about it ?
Cheers,
Gilles
