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

[Paul Edmon]

In the past we used the LUA job submit plugin to block jobs that would 
intersect maintenance reservations.  I would look at that.

-Paul Edmon-


On 05/11/2018 08:19 AM, Bill Wichser wrote:
> 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
>>
>>
>>
>>
>>
>