Changes between Initial Version and Version 1 of Workshops/JobParallelism/AfterYourJobHasCompleted

Timestamp:

01/19/26 14:06:17 (25 hours ago)

Author:

Carl Baribault

Comment:

Setting up for sacct - WIP

Workshops/JobParallelism/AfterYourJobHasCompleted

@@ +1 @@
+[[PageOutline]]
+= After your job has completed - determining cumulative core efficiency =
+
+== Assumptions ==
+See [wiki:Workshops/JobParallelism/WhileYourJobIsRunning#Assumptions Assumptions] - same as for running jobs.
+
+== Preliminary: tools available ==
+
+=== LONI clusters ===
+
+LONI clusters provide the self-contained commands '''seff''' and '''qshow'''.
+
+  * '''seff''' (See [https://github.com/SchedMD/slurm/tree/master/contribs/seff seff on github].)
+
+  On LONI QB4 cluster:
+
+ {{{
+[loniID@qbd2 ~]$ seff -h
+Usage: seff [Options] <Jobid>
+       Options:
+       -h    Help menu
+       -v    Version
+       -d    Debug mode: display raw Slurm data
+[loniID@qbd2 ~]$ seff -v
+seff Version 2.1
+
+ }}}
+
+   * '''qshow''' (provided by LONI)
+
+  On LONI QB4 cluster:
+
+ {{{
+[loniID@qbd2 ~]$ qshow -h
+** usage: qshow -n <options> <base-name> <begin #> <end #> <command>
+...
+Show and optionally kill user processes on remote nodes or execute
+commands...
+[loniID@qbd2 ~]$ qshow -v
+qshow 2.74
+ }}}
+
+=== Cypress ===
+
+ In the following we'll need to use the '''sacct''' command for analyzing completed jobs on Cypress. (Cypress uses an older version of SLURM (v14.03.0) with insufficient support for the seff command.)
+
+ Here are the relevant outputs that we'll need from '''sacct'''.
+
+||='''sacct''' output column=||=Description=||=Format=||
+||'''TotalCPU'''||Total core hours used||[DD-[hh:]]mm:ss)||
+||'''CPUTimeRAW'''||Total cores hours allocated||Seconds||
+
+== Cumulative core efficency: (total core hours used) / (total core hours allocated ==
+
+ foo