We are trying to find a way for job_submit.lua to detect that a submit request is for a job array. I've been going through the source code trying to find which 'job_des.XXXXX' variable can be tested by job_submit.lua to make this determination but have not been successful. Can you provide a quick pointer as to how this may be accomplished? Thank you!
(In reply to rl303f from comment #0) > We are trying to find a way for job_submit.lua to detect > that a submit request is for a job array. Unfortunately, it doesn't look like anyone has previously asked for those fields to be made available, so they're not exposed on the Lua interface currently. I'm assuming that having access to the raw array string would be sufficient - i.e., the "1-100%2" part of an "sbatch --array=1-100%2 job_script.sh"? I can look at getting a patch for you shortly. > I've been going through the source code trying to find > which 'job_des.XXXXX' variable can be tested by job_submit.lua > to make this determination but have not been successful. There's no separate documentation on this at present, the best reference is the plugin itself. The job description fields are all constructed here: https://github.com/SchedMD/slurm/blob/master/src/plugins/job_submit/lua/job_submit_lua.c#L651 FYI - There's separate code to validate and update the record later, there's usually three locations any patch has to address if you're looking at modifying it yourself. I think the field you care to see is array_task_str. - Tim
Yes, the raw array string would be great. Thanks very much, Tim!
Created attachment 3072 [details] add array_inx to job_submit.lua
This is added in commit f52a331769. I attached a standalone patch to the bug as well. This will be in 15.08.12 / 16.05-rc2. The value is 'job_desc.array_inx', and needs a properly formatted job array string if you're going to set it for people. If you're just testing it, it is 'nil' (null) if unset, or a string if set on the submission. Note that this only works for submission, not for modification. (Slurm as a whole does not provide a method for modifying the overall job array at present.) - Tim
Wow, that's perfect! Many thanks, Tim.
