I need to up the ulimit for open files from 1024 to maybe 10000.
I have added that limit for a user in
/etc/security/limits.conf on all nodes.
I have added “
session required pam_limits.so” to
With a normal login that larger limit now works but not for PBS interactive logins nor PBS jobs.
I have seen this post where they needed to up the stack-size.
They needed to edit PBS_EXEC/lib/init.d/limits.pbs_mom on each mom.
I have therefore edited
/usr/pbs/lib/init.d/limits.pbs_mom (on one not busy node) and added at the end of the file:
if [ -f /etc/sgi-release -o -f /etc/sgi-compute-node-release ] ; then MEMLOCKLIM=`ulimit -l` NOFILESLIM=`ulimit -n` STACKLIM=`ulimit -s` ulimit -l unlimited ulimit -n 16384 ulimit -s unlimited fi NOFILESLIM=10000
Using a PBS interactive login job to login to that node I get the old limit still:
mynode~$ ulimit -Sn 1024
If I login directly without going through PBS I get the larger limit set in limits.conf as expected.
So there is something else I need to do to get PBS to set a ulimit. (Note: I have not changed limits.pbs_mom on the head node.)
I’m using PBSPro 14.2. There is no mention of ulimit or NOFILESLIM in the Admin or Reference Guides.