[slurm-users] sreport time units explanation

[Loris Bennett]

Dear Kamil,

Kamil Wilczek <kmwil at mimuw.edu.pl> writes:

> Dear Slurm Users,
>
> I'm hope this would be an easy answer. I cannot find an explanation
> of what exactly "Hours" or other units of time mean in the context
> of sreport output. For example, when listing most active users
> in the current month (I'll be trying to even the usage, because
> I have several very active users who get most of the resources):
>
>   sreport --tres=gres/gpu -t hourper user top start=2022-06-01 end=now
>     topcount=20 format=login%15,proper%20,tresname%15,used%15
>
> ----------------------------------------------------------------------
> Top 20 Users 2022-06-01T00:00:00 - 2022-06-22T08:59:59 (1846800 secs)
> Usage reported in TRES Hours/Percentage of Total
> ----------------------------------------------------------------------
>           Login          Proper Name       TRES Name              Used
> --------------- -------------------- --------------- -----------------
>        redacted         redacted           gres/gpu       7470(23.11%)
>
> The number "7470" is obviously not a number of raw hours used by a user.

Why not?  How may GPU cards do you have?  We have 24 and our top user
for the same time period is 4382(27.41%).  This seems reasonable to me.

As there are 513 hours in the period, your user would have had to have
used around 15 cards fairly continuously.  Is that not possible? 

Cheers,

Loris

> How should this value be interpreted?
>
> Kind Regards
-- 
Dr. Loris Bennett (Herr/Mr)
ZEDAT, Freie Universität Berlin         Email loris.bennett at fu-berlin.de