Gnu parallel and multiple nodes using rsh instead ssh

Question

Can I use rsh instead of ssh to split jobs between nodes in an hpc setup?

Or gnu-parallel only can send different jobs by ssh?

Answer 1

Use --ssh to set the ssh command:

parallel --ssh rsh ...

Or $PARALLEL_SSH:

PARALLEL_SSH=rsh
export PARALLEL_SSH
parallel ...

Or do it on a server-by-server basis:

parallel -S '/usr/bin/rsh my_rsh_server' -S my_ssh_server ...