# Here's content of the hook
import pbs
import sys

EVENT_NAMES = {
    pbs.EXECHOST_PERIODIC: "EXECHOST_PERIODIC",
...
    pbs.RUNJOB: "RUNJOB",
}

def main():
    e = pbs.event()
    f = open('/tmp/pbs-hook-cgroup.log', 'a')
    f.write("#######################start\n")
    f.write(EVENT_NAMES[e.type])
    f.write(" jobid="+e.job.id+'\n')
    f.close()
main()

# Here's output of `qmgr -c "print hook cgroup"`
"""
create hook cgroup
set hook cgroup type = site
set hook cgroup enabled = true
set hook cgroup event = execjob_prologue
set hook cgroup event += execjob_launch
set hook cgroup event += execjob_attach
"""

# Here's content of pbs-intelmpi.o33338. (Surely the .e file was empty)
"""
node12
node12
node16
node16
"""

# Here's the job file
"""
#PBS -N pbs-intelmpi
#PBS -l select=2:ncpus=2:mpiprocs=2
#PBS -l place=scatter

I_MPI_HYDRA_BOOTSTRAP=rsh
I_MPI_HYDRA_BOOTSTRAP_EXEC=/opt/pbs/bin/pbs_tmrsh
ml load impi
mpirun -machinefile $PBS_NODEFILE -np 4 /bin/hostname
"""

# Here's output of `for i in 12 16;do echo -- ---------------node$i;ssh node$i cat /tmp/pbs*;done"`
"""
-- ---------------node12
#######################start
EXECJOB_PROLOGUE jobid=33339.w003
#######################start
EXECJOB_LAUNCH jobid=33339.w003
-- ---------------node16
cat: '/tmp/pbs*': No such file or directory
"""