[slurm-users] Change something in user's script using job_submit.lua plugin

[Ole Holm Nielsen]

Hi Paulo,

Which Slurm version do you have, and did you set this in slurm.conf: 
JobSubmitPlugins=lua ?

Perhaps you may find some useful information in this Wiki page:
https://wiki.fysik.dtu.dk/Niflheim_system/Slurm_configuration/#job-submit-plugins

/Ole


On 26-10-2023 19:07, Paulo Jose Braga Estrela wrote:
> Is it possible to change something in user’s sbatch script by using a 
> job_submit plugin? To be more specific, using Lua job_submit plugin.
> 
> I’m trying to do the following in job_submit.lua when a user changes 
> job’s partition to “cloud” partition, but the script got executed 
> without modification.
> 
> function slurm_job_modify(job_desc, job_rec, part_list, modify_uid)
> 
>          if job_desc.partition == "cloud" then
> 
>                  slurm.log_info("slurm_job_modify: Bursting job %u from 
> uid %u to the cloud...",job_rec.job_id,modify_uid)
> 
>                  script = job_rec.script
> 
>                  slurm.log_info("Script BEFORE change: %s",script)
> 
>                  -- changing user command to another command
> 
>                  script = string.gsub(script,"local command","cloud 
> command")
> 
>                  slurm.log_info("Script AFTER change %s",script)
> 
>                  -- The script variable is really changed
> 
>                  job_rec.script = script
> 
>                  slurm.log_info("Job RECORD SCRIPT %s",job_rec.script)
> 
>                  -- The job record also got changed, but the EXECUTED 
> script isn’t changed at all. It runs without modification.
> 
>          end
> 
>          return slurm.SUCCESS
> 
> end
> 
> *PAULO ESTRELA*