Dear Slurm Users,
We've started using maintenance reservations. As you would expect, this
caused some confusion for users who were wondering why their jobs were
queuing up and not running. Some of my users provide a public service of
sorts that automatically submits jobs to our cluster. They would like to
have their submission framework automatically detect if there's a
reservation that may interfere with their jobs, and act accordingly.
What is the best way to do this? Typically, in my shell scripts, I have
some command that tests something, and then check exit code returned by
the command. For example to check if my name is in file 'foo.txt', I'd
do something like this:
grep -iq prentice foo.txt
retval=$?
if [ $retval -eq 0 ]; then
echo "Prentice found"
else
echo "Prentice not found"
fi
unset retval
Or something like that. I was also thinking this might work, too:
num_res=$(scontrol -o show res | wc -l)
if [ $num_res -eq 0 ]; then
echo "No reservations found"
else
echo "$num_res reservation(s) found"
fi
Are there any better or other ways that you would recommend? Also, if
there's more than one, is are they listed in any kind of order in the
scontrol or sinfo output (soonest first, soonest last, etc.)? From the
man page, it looks like 'scontrol show reservation' doesn't provide any
sorting.
Prentice
