[slurm-users] How to check if there's a reservation

[Bill Wichser]

The problem is that reservations can be in there yet have no effect on 
the submitted job if they would run before the reservation takes place. 
One can pull the starting time simply using something like this

scontrol show res -o | awk '{print $2}'

with output

StartTime=2018-06-12T06:00:00
StartTime=2018-06-12T06:00:00

You'd need more code around that, obviously, to determine if this 
starttime might hold up the job.

Bill


On 05/10/2018 04:23 PM, Prentice Bisbal wrote:
> 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
> 
> 
> 
> 
>