Under the Data Objects section on the following page http://slurm.schedmd.com/selectplugins.html we find the statement:
"Slurmctld is a multi-threaded program with independent read and write locks on each data structure type." Which is what lead me to believe it's there, that we perhaps missed a configuration option. AC On 06/12/2013 12:43 PM, Paul Edmon wrote: > I'm also interested in this as I've only ever seen one slurmctld and > only at 100%. It would be good if making slurm multithreaded was on the > path for the future. I know we will have 100,000's of jobs in flight > for our config so it would be good to have something that can take that > load. > > -Paul Edmon- > > On 06/12/2013 12:30 PM, Alan V. Cowles wrote: >> Hey Guys, >> >> I've seen a few references to the slurmctld as a multithreaded process >> but it doesn't seem that way. >> >> We had a user submit 18000 jobs to our cluster (512 slots) and it shows >> 512 fully loaded, shows those jobs running, shows about 9800 currently >> pending, but upon her submission threw errors around 16500. >> >> Submitted batch job 16589 >> Submitted batch job 16590 >> Submitted batch job 16591 >> sbatch: error: Slurm temporarily unable to accept job, sleeping and >> retrying. >> sbatch: error: Batch job submission failed: Resource temporarily >> unavailable. >> >> The thing we noticed at this time on our master host is that slurmctld >> was pegging at 100% on one cpu quite regularly and paged 16GB of virtual >> memory, while all other cpu's were completely idle. >> >> We wondered if the pegging out of the control daemon is what led to the >> submission failure, as we haven't found any limits set anywhere to any >> specific job or user, and wondered if perhaps we missed a configure >> option for this when we did our original install. >> >> Any thoughts or ideas? We're running Slurm 2.5.4 on RHEL6. >> >> AC
