[slurm-users] Does the slurmctld node need access to Parallel File system and Runtime libraries of the SW in the Compute nodes.

Paul Edmon pedmon at cfa.harvard.edu
Tue Aug 2 14:03:25 UTC 2022

True.  Though be aware that Slurm will by default map the environment 
from login nodes to compute.  That's the real thing that matters.  So as 
long as the environment is setup properly, any filesystems excluding the 
home directory do not need to be mounted on login.

-Paul Edmon-

On 8/2/2022 9:56 AM, Brian Andrus wrote:
> A quick nuance:
> We only have home directories on the login node. Our software 
> installations are not accessible from there to prevent users from 
> running things there (you must have a running job to access the 
> software packages).
> So your login node does not necessarily need everything the compute 
> nodes do.
> Brian Andrus
> On 8/2/2022 6:45 AM, Paul Edmon wrote:
>> No, the node running the slurmctld does not need access to any of the 
>> customer facing filesystems or home directories.  While all the login 
>> and client nodes do, the slurmctld does not.
>> -Paul Edmon-
>> On 8/2/2022 9:30 AM, Richard Chang wrote:
>>> Hi,
>>> I am new to SLURM, so please bear with me.
>>> I need to understand whether the Server/Node running the slurmctld 
>>> daemon will need access to the Parallel file system, and if it will 
>>> need all the SW run time libraries installed, as in the compute nodes.
>>> The users will login to the Login/submission nodes with their home 
>>> mounted from say PFS1 and change directory to the PFS2 mount point 
>>> and then submit/run their jobs.
>>> Does it mean the Server/node running the slurmctld daemon will also 
>>> need access to both the PFS1 and PFS2 mount points ? I am not sure.
>>> The server running the slurmctld daemon will be exclusively for that 
>>> and is not a login node.
>>> Thanks & regards,
>>> Richard.

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