[gridengine users] Request: Understanding qacct

Gowtham g at mtu.edu
Sat Sep 2 10:25:49 UTC 2017


Good morning, Reuti.

HT has been turned off in all nodes. So, 1536 is the real core count. Thank
you for help!

On Sat, Sep 2, 2017 at 3:47 AM Reuti <reuti at staff.uni-marburg.de> wrote:

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> Hi,
>
> Am 01.09.2017 um 23:14 schrieb Gowtham:
>
> > Good afternoon.
> >
> > I am having a difficult time understanding the output of 'qacct' in our
> cluster. The output of this command
> >
> > qacct -b 201601010000 -e 201612312359
> >
> > is as follows:
> >
> > WALLCLOCK: 5177246915
>
> Maximum wallclock would be 48,439,296,000 - the "-e" options specifies the
> latest start time of a job. So it might be a little bit more as jobs from
> the next year can be included.
>
>
> > UTIME: 18823970903.294
> > STIME: 1458328785.078
> > CPU: 97217627416.480
> >
> > I am assuming WALLCLOCK is the wall time of all simulations in seconds,
> and CPU is the CPU time of all simulations in seconds. Converting them to
> hours, I get 1,438,124 hours for wall time, and 27,004,896 hours for CPU
> time.
> >
> > Our HPC cluster has 1536 cores
>
> These are 1536 real cores or with HT?
>
> - -- Reuti
>
>
> > and the core count stayed the same in 2016. 1536 cores running 24 hours
> each day and 365 days a year would yield 13,455,360 core-hours.
> >
> > How would I go about explaining the observed discrepancy: maximum
> possible core hours (13,455,360) vs accounted core-hours (27,004,896)?
> >
> >
> > This RQS rule has always been in effect:
> >
> > {
> >    name         limit_oversubscription
> >    description  Prevent core over-subscription
> >    enabled      TRUE
> >    limit        hosts {*} to slots=$num_proc
> > }
> >
> > Thank you for your time and help.
> >
> > Best regards,
> > Gowtham
> >
> > --
> > Gowtham, PhD
> > Director of Research Computing, IT
> > Adj. Asst. Professor, ECE and Physics
> > Michigan Technological University
> >
> > P: (906) 487-4096
> > F: (906) 487-2787
> > https://it.mtu.edu
> > https://hpc.mtu.edu
> > _______________________________________________
> > users mailing list
> > users at gridengine.org
> > https://gridengine.org/mailman/listinfo/users
>
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-- 

Gowtham, PhD
Director of Research Computing, IT
Adj. Asst. Professor, ECE and Physics
Michigan Technological University

(906) 487-4096
http://it.mtu.edu
http://hpc.mtu.edu
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