[slurm-users] SLURM submit policy

[Paul Edmon]

You might try looking at a partition QoS using the GrpTRESMins or 
GrpTRESRunMins: https://slurm.schedmd.com/resource_limits.html

There are a bunch of options which may do what you want.

-Paul Edmon-

On 3/10/2021 9:13 AM, Marcel Breyer wrote:
>
> Greetings,
>
> we know about the SLURM configuration option *MaxSubmitJobsPerUser* to 
> limit the number of jobs a user can submit at a given time.
>
> We would like to have a similar policy that says that the total time 
> for all jobs of a user cannot exceed a certain time limit.
>
> For example (normal *MaxSubmitJobsPerUser = 2*):
>
> srun --time 10 ...
> srun --time 20 ...
> srun --time 10 ... <- fails since only 2 jobs are allowed per user
>
>
> However, we want something like (for a maximum aggregate time of e.g. 
> 40mins):
>
> srun --time 10 ...
> srun --time 20 ...
> srun --time 10 ...
> srun --time 5 ... <- fails since the total job times exceed 40mins
>
>
> However, another allocation pattern could be:
>
> srun --time 5 ...
> srun --time 5 ...
> srun --time 5 ...
> srun --time 5 ...
> srun --time 5 ...
> srun --time 5 ...
> srun --time 5 ...
> srun --time 5 ...
> srun --time 5 ... <- fails since the total job times exceed 40mins 
> (however, after the first job completed, the new job can be submitted 
> normally)
>
>
> In essence we would like to have a policy using the FIFO scheduler 
> (such that we don't have to specify another complex scheduler) such 
> that we can guarantee that another user has the chance to get access 
> to a machine after at most X time units (40mins in the example above).
>
> With the *MaxSubmitJobsPerUser *option we would have to allow only a 
> really small number of jobs (penalizing users that divide their 
> computation into small sub jobs) or X would be rather large (num_jobs 
> * max_wall_time).
>
> Is there an option in SLURM  that mimics such a behavior?
>
> With best regards,
> Marcel Breyer
>
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