[slurm-users] ulimit in sbatch script

[Mahmood Naderan]

Excuse me... I think the problem is not pam.d.
How do you interpret the following output?


[hamid at rocks7 case1_source2]$ sbatch slurm_script.sh
Submitted batch job 53
[hamid at rocks7 case1_source2]$ tail -f hvacSteadyFoam.log
max memory size         (kbytes, -m) 65536000
open files                      (-n) 1024
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 4096
virtual memory          (kbytes, -v) 72089600
file locks                      (-x) unlimited
^C
[hamid at rocks7 case1_source2]$ squeue
             JOBID PARTITION     NAME     USER ST       TIME  NODES
NODELIST(REASON)
                53   CLUSTER hvacStea    hamid  R       0:27      1 compute-0-3
[hamid at rocks7 case1_source2]$ ssh compute-0-3
Warning: untrusted X11 forwarding setup failed: xauth key data not generated
Last login: Sun Apr 15 23:03:29 2018 from rocks7.local
Rocks Compute Node
Rocks 7.0 (Manzanita)
Profile built 19:21 11-Apr-2018

Kickstarted 19:37 11-Apr-2018
[hamid at compute-0-3 ~]$ ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 256712
max locked memory       (kbytes, -l) unlimited
max memory size         (kbytes, -m) unlimited
open files                      (-n) 1024
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 4096
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited
[hamid at compute-0-3 ~]$



As you can see, the log file where I put  "ulimit -a" before the main
command says limited virtual memory. However, when I login to the
node, it says unlimited!

Regards,
Mahmood




On Sun, Apr 15, 2018 at 11:01 PM, Bill Barth <bbarth at tacc.utexas.edu> wrote:
> Are you using pam_limits.so in any of your /etc/pam.d/ configuration files? That would be enforcing /etc/security/limits.conf for all users which are usually unlimited for root. Root’s almost always allowed to do stuff bad enough to crash the machine or run it out of resources. If the /etc/pam.d/sshd file has pam_limits.so in it, that’s probably where the unlimited setting for root is coming from.
>
> Best,
> Bill.