This will give you the computer cores allocated (#3):
scontrol show node | grep CPUAlloc | cut -d" " -f 4 | sed 's/CPUAlloc=//g'
| awk '{total = total + $1}END{print total}'
But of course not very useful.. I would love also a good summary tool.
2013/4/26 Mario Kadastik <[email protected]>
>
> The thread has somewhat been branched for the RAM requirements. Any useful
> comments on the #2-#4? I can probably summarize this by running over all
> compute nodes with scontrol show host, but that may not be too efficient...
>
> On 25.04.2013, at 17:28, Mario Kadastik <[email protected]> wrote:
>
> >
> > Hi,
> >
> > I'm trying to get an overview of the state of the cluster. What I'd
> really like to know is for example:
> >
> > 1) compute nodes online
> > 2) compute cores online
> > 3) compute cores allocated
> > 4) distribution of job sizes currently running (and queued possibly)
> > 5) list of nodes that are down/draining and reason
> >
> > out of those #1 and #5 can be gotten from sinfo command with sinfo -Nle
> -p main, which shows nodes and their states with reasons.
> >
> > However I cannot find right now quickly how to find out how many cores
> in total are online (in theory it's nodes up * cpu count / node summed for
> each node type) and even more crucial is how many cores are actually used
> and by what size jobs. Today I was really tearing my hair out as 99% of the
> time we use single core jobs and on my ca 4300 cores I only saw ca 1800
> jobs with 6000 in queue. As it came out a user had submitted 5 jobs with
> subtasks. Four had 100 subtasks and one had 2000 nicely accounting for the
> missing jobs. However I would really appreciate some summary view of the
> cluster. Is it already available in sinfo, sstat, scontrol commands? If
> not, does anyone have a good script that gathers the info together
> efficiently and lists it.
> >
> > It'd have to be text only as all nodes are headless and I'd prefer to
> get the overview in a nice summary in shell.
> >
> > Thanks,
> >
> > Mario Kadastik, PhD
> > Researcher
> >
> > ---
> > "Physics is like sex, sure it may have practical reasons, but that's
> not why we do it"
> > -- Richard P. Feynman
>
> Mario Kadastik, PhD
> Researcher
>
> ---
> "Physics is like sex, sure it may have practical reasons, but that's not
> why we do it"
> -- Richard P. Feynman
>
