[slurm-users] [Slurm 18.08.4] sacct/seff Inaccurate usercpu values

Wed Jan 9 13:49:23 MST 2019

Thanks... looks like the bug should get some attention now that a paying site is complaining:

https://bugs.schedmd.com/show_bug.cgi?id=6332

Thanks Jurij!

Best,
Chris

—
Christopher Coffey
High-Performance Computing
Northern Arizona University
928-523-1167

On 1/9/19, 7:24 AM, "slurm-users on behalf of Paddy Doyle" <slurm-users-bounces at lists.schedmd.com on behalf of paddy at tchpc.tcd.ie> wrote:

    On Wed, Jan 09, 2019 at 12:44:03PM +0100, Bj?rn-Helge Mevik wrote:

    > Paddy Doyle <paddy at tchpc.tcd.ie> writes:
    > 
    > > Looking back through the mailing list, it seems that from 2015 onwards the
    > > recommendation from Danny was to use 'jobacct_gather/linux' instead of
    > > 'jobacct_gather/cgroup'. I didn't pick up on that properly, so we kept with
    > > the cgroup version.
    > >
    > > Is anyone else still using jobacct_gather/cgroup and are you seeing this
    > > same issue?
    > 
    > Just a side note: In last year's SLUG, Tim recommended the following
    > settings:
    > 
    > proctrack/cgroup, task/cgroup, jobacct_gather/cgroup
    > 
    > So the recommendation for jobacct_gather might have changed -- or Danny
    > and Tim might just have different opinions. :)

    Interesting... the cgroups documentation page still says the performance of
    jobacct_gather/cgroup is worse than jobacct_gather/linux. Although
    according to the git commits of doc/html/cgroups.shtml, that was added to
    the page in Jan 2015, so yeah maybe things have changed again. :)

    https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fslurm.schedmd.com%2Fcgroups.html&data=02%7C01%7Cchris.coffey%40nau.edu%7C2e47d9c9330646a8245f08d6763e2346%7C27d49e9f89e14aa099a3d35b57b2ba03%7C0%7C0%7C636826406595983378&sdata=i634oCV0NeO6DvBos05gM3iF7YxI%2FJC%2BZC7MJ222SW8%3D&reserved=0

    In that case, either set 'JobAcctGatherFrequency=task=0' or wait for the
    bug to be fixed.

    Paddy

    -- 
    Paddy Doyle
    Trinity Centre for High Performance Computing,
    Lloyd Building, Trinity College Dublin, Dublin 2, Ireland.
    Phone: +353-1-896-3725
    https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.tchpc.tcd.ie%2F&data=02%7C01%7Cchris.coffey%40nau.edu%7C2e47d9c9330646a8245f08d6763e2346%7C27d49e9f89e14aa099a3d35b57b2ba03%7C0%7C0%7C636826406595983378&sdata=S2PCubxVUifigrvyEnmFdrQb5G9Ak4roM2FJtUxiM%2Fw%3D&reserved=0