* Added note about job ID.

master
Wirawan Purwanto 3 years ago
parent 8038cb091e
commit 29fc99fa66
  1. 27
      slurm/20190411.Slurm-accounting.md

@ -55,6 +55,25 @@ and executed while this job is being launched and executed.
in which various parts of a job can require very different resources.
See [this documentation](https://slurm.schedmd.com/heterogeneous_jobs.html)
for more information.)
The combination of all the job steps constitute the entire job.
Each job step generates its own record in the SLURM accounting database.
#### Summary on Job ID
A single SLURM job will generate the "master record" which logs the
overall execution of the job.
In addition, there can be zero or more extra records generated by the
"job steps" triggered during the course of that job.
The master record includes the resource utilization usage (CPU,
memory, etc) of the child "job steps".
The master job record is characterized by a plain number in the
`JobIDRaw` field.
Further, the `User` field must not be empty.
The rest of this section goes into greater detail of the various
`JobID`'s.
#### Observed Job ID Patterns
Several regex patterns have observed in the JobID field (from Turing
accounting):
@ -101,6 +120,14 @@ This will not be a job array.
* Regexp match : `JobID ~ /^[0-9]+$/`.
From my observation, only simple single-core jobs that do not involve any
MPI or other fancy stuff (no job array, for example) would not
generate extra "child records" for job steps in the SLURM accounting
database.
However, several job records with this type JobID will have no "User" field set.
These are also not vanilla jobs.
#### Array Job

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