The tipcc master command reports on (i) the five non-user processes that consumes the most memory on the head node as well as (ii) any user processes running on the head node (excluding basic ones such as ls, more, cp etc.)
$ tipcc master
alice [Alice Aliceson (alice@honeypot.ucsf.edu)]:
PIDs (on the head node): 87013
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
alice 87013 0.0 0.0 100944 104 pts/77 S+ Sep27 0:00 tail -f pilot.minfi.R.out
bob [Bob Bobson (bob@honeypot.ucsf.edu)]:
PIDs (on the head node): 514934
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
bob 514934 0.0 0.3 789660 403548 pts/51 S+ Sep16 1:05 /opt/R/R-3.2.0/lib64/R/bin/exec/R