[slurm-users] Users Logout when job die or complete

[Andrea Carotti]

Dear Chris,

thanks for the suggestions. I'm running Centos Stream 8.4.

I've done a couple of tests:

1) I've modified as suggested this line as this 
ProctrackType=proctrack/linuxproc. Restarted the slurmctld and nd the 
nodes' slurmd(hope it's enough) but didn't changed the behaviour.

2) I've tried the cgroup configuration like this:

##############Lines added/changed to slurm.conf ###############

ProctrackType=proctrack/cgroup
TaskPlugin=task/cgroup,task/affinity
JobAcctGatherType=jobacct_gather/cgroup #optional for gathering metrics
PrologFlags=Contain                     #X11 flag is also suggested

###########Lines of cgroup.conf#################

###
# Slurm cgroup support configuration file.
###
CgroupAutomount=yes
CgroupMountpoint=/sys/fs/cgroup
ConstrainCores=yes
ConstrainDevices=yes
ConstrainKmemSpace=no         #avoid known Kernel issues
ConstrainRAMSpace=yes
ConstrainSwapSpace=yes
TaskAffinity=no          #use task/affinity plugin instead

Restarted the slurmctld and nd the nodes' slurmd (again hoping it's 
enough) but again no luck...

Do I need a complete restart?

What ele can I check/change/try?

Hope someone can help, thanks

Andrea


Il 10/07/2021 22:54, Christopher Samuel ha scritto:
> Hi Andrea,
>
> On 7/9/21 3:50 am, Andrea Carotti wrote:
>
>> ProctrackType=proctrack/pgid
>
> I suspect this is the cause of your problems, my bet is that it is 
> incorrectly identifying the users login processes as being part of the 
> job and thinking it needs to tidy them up in addition to any processes 
> left over from the job. It also seems to be more for BSD systems than 
> Linux.
>
> At the very least you'd want:
>
> ProctrackType=proctrack/linuxproc
>
> Though I'd strongly suggest looking at cgroups for this, see:
>
> https://slurm.schedmd.com/slurm.conf.html#OPT_ProctrackType
>
> and:
>
> https://slurm.schedmd.com/cgroups.html
>
> Best of luck!
> Chris

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Andrea Carotti
Dipartimento di Scienze Farmaceutiche
Università di Perugia
Via del Liceo, 1
06123 Perugia, Italy
phone: +39 075 585 5121
fax: +39 075 585 5161
mail: andrea.carotti at unipg.it