[slurm-users] runtime priority

[Renfro, Michael]

There’s a --nice flag to sbatch and srun, at least. Documentation indicates it decreases priority by 100 by default.

And untested, but it may be possible to use a job_submit.lua [1] to adjust nice values automatically. At least I can see a nice property in [2], which I assume means it'd be accessible as job_desc.nice in the Lua script.

[1] https://github.com/SchedMD/slurm/blob/master/contribs/lua/job_submit.lua
[2] https://github.com/SchedMD/slurm/blob/master/src/lua/slurm_lua.c

> On Jun 30, 2020, at 9:52 AM, Lawrence Stewart <stewart at serissa.com> wrote:
> 
> How does one configure the runtime priority of a job?  That is, how do you set the CPU scheduling “nice” value?
> 
> We’re using Slurm to share a large (16 core 768 GB) server among FPGA compilation jobs.  Slurm handles core and memory reservations just fine, but runs everything nice -19, which makes for hugh load averages and terrible interactive performance.
> 
> Manually setting the compilation processes with “renice 19 <pid>” works fine, but is tedious.
> 
> -Larry
> 
>