Hi Gilles Gouaillardet,
Thank you for your kind assistant and YES --mca plm_rsh_no_tree_spawn 1
works fine. i think it suppose to be slower than normal mpi run.
as you mentioned slave1 can't ssh to others. only master can ssh to all
slaves. I'll fix it and check again.
Thanking you in advance,
By default, Open MPI spawns orted via ssh in a tree fashion. that
basically requires all nodes can ssh to each other.
this is likely not your case (for example slave2 might not be able to
ssh slave4)
as a workaround, can you try to
mpirun --mca plm_rsh_no_tree_spawn 1 ...
and see whether i
I have a parallel setup of 6 identical machines with Linux mint 18, ssh and
openmpi.
when i execute this,
mpiexec -np 16 --hostfile mpi-hostfile namd2 apoa1.namd > apoa1.log
with following host file
localhost slots=4
slave1 slots=4
slave2 slots=4
slave3 slots=4
slave4 slots=4
slave5 slots=4
it gi
