Ciao Matteo, If you look through the archives, you will see I struggled with this problem too. A few people suggested some alternatives, but in the end I did not find anything really satisfying which did not require a ton of work for me.
Another piece of the story is users requesting a license but not using it (I don't think there is a solution there, other than perhaps make them "pay" something with their allocation to discourage the problem) and others NOT requesting the license but using it nevertheless, throwing up slurm count. I think the latter could be solved programmatically in slurm, but it felt like too much work compared to simply educating the users... Depending on your userbase (and their well-behaveness) you might or might not have this issue. Cheers, Davide On Fri, Mar 24, 2023 at 8:06 AM Matteo Guglielmi <matteo.guglie...@dalco.ch> wrote: > > Dear all, > > > we have a license server which is allocating licenses to a bunk of workstation > > not managed with slurm (completely independent boxes) and the nodes of a > cluster, > > all managed with slurm. > > > I wrote a simple script that keeps querying the number of licenses used by the > > outside "world" and changes the total number of available license in the slurm > > database. > > > Everything works as expected except when all licenses are used outside of > slurm. > > > When this occurs, the total number of licenses is set to zero and slurm > refuses > > to accept any job asking for one or more licenses with this error message: > > > "sbatch: error: Batch job submission failed: Invalid license specification" > > > So, > > > is there a way to configure slurm to still accept and queue jobs even when the > > total number of licenses is set temporarily to zero? > > > If my approach is not correct, > > > is there a way to share a common license server between slurm workers and non > > slurm workers? > > > Thank you. >
