[slurm-users] Increase MaxJobCount in slurm.conf

[Paul Edmon]

Nope per the documentation you have to restart the slurmctld to change 
MaxJobCount.

-Paul Edmon-

On 1/31/19 5:58 AM, Buckley, Ronan wrote:
>
> Hi,
>
> I want to increase the MaxJobCount in the slurm.conf file from its 
> default value of 10,000. I want to increase it to 250,000.
>
> The online documentation says:
>
> MaxJobCount
>
> The maximum number of jobs Slurm can have in its active database at 
> one time. Set the values of MaxJobCount and MinJobAge to ensure the 
> slurmctld daemon does not exhaust its memory or other resources. Once 
> this limit is reached, requests to submit additional jobs will fail. 
> The default value is 10000 jobs. NOTE: Each task of a job array counts 
> as one job even though they will not occupy separate job records until 
> modified or initiated. Performance can suffer with more than a few 
> hundred thousand jobs. *_Setting per MaxSubmitJobs per user is 
> generally valuable to prevent a single user from filling the system 
> with jobs. This is accomplished using Slurm's database and configuring 
> enforcement of resource limits. This value may not be reset via 
> "scontrol reconfig". It only takes effect upon restart of the 
> slurmctld daemon._*
>
> *__*
>
> My assumption is that a restart of the slurmctld daemon is only needed 
> if “Setting per MaxSubmitJobs per user”, which would be done by 
> updating the slurm database.
>
> To just update the value of the MaxJobCount in the slurm.conf file, I 
> assume I edit the slurm.conf file with the new value and run a 
> ‘scontrol reconfigure’ to update it. That is all that is needed, right??
>
> Rgds
>
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