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Running a Tmux(/Screen) session

Idle SSH sessions from MICe to Graham seem to be randomly dropped.dropped (but see the above section on ~/.ssh configuration, which resolves this).  For this and other reliability reasons, you may with to run a more permanent interactive process - i.e., a terminal multiplexer, likely either screen or tmux - on a Graham login node.  (See the "Pydpiper on HPF" page for more details.)  If a subsequent SSH connection to Graham is routed to a different node than the one running your multiplexer, simply connect from the former to the latter (e.g., '[gra-login-1 ~]$ ssh gra-login-3').