Re: [Condor-users] group <none> appeared after upgrade from 7.4.3 to 7.6.2

[Dan Bradley <dan@xxxxxxxxxxxx>]

On 10/18/11 4:02 PM, Erik Erlandson wrote:
> > If you search for the first "Matched" line what you'll see is that the
> > jobs that were submitted without a group are now apparently in the group
> > "<none>" and that group actually has a quota somehow (the group doesn't
> > actually exist so it certainly doesn't have a quota).  Jobs for that
> > "group" get run in front of the groups that haven't filled their quota.
> Hi Joe,
>
> Accounting groups were enhanced to support fully generalized
> Hierarchical Accounting Groups (HGQ), as of 7.5.6:
>
> https://condor-wiki.cs.wisc.edu/index.cgi/tktview?tn=1393
>
> There is always a root node in the accounting group hierarchy, whose
> name is "<none>", and any job that does not map to some other accounting
> group will be assigned to<none>.  This group always accepts any surplus
> quota not used by other groups.
>
> You may also be interested in:
> https://condor-wiki.cs.wisc.edu/index.cgi/tktview?tn=1926
> (dev release only, not on current stable series 7.6)

Joe,

It sounds like in your case, the <none> group is being considered before 
most other groups because it is more "starved", meaning it is using a 
smaller fraction of its share of the pool compared to most other 
groups.  If I understand the new group quota system correctly, group 
<none>'s share of the pool is determined by computing the share of the 
pool for all the other groups and counting what is left.  In your pool 
there are 10216 slots.  5682 of these are being assigned to group <none>.

One thing that can cause trouble is if you have special slots that are 
not available to all jobs.  In this case, the size of the pool may be 
effectively overestimated.  The result is that dynamic quotas are too 
big, and groups which are considered first may get too many slots, while 
groups that follow will starve.  GROUP_DYNAMIC_MACH_CONSTRAINT can be 
used to attempt to work around this problem.  So can 
GROUP_QUOTA_ROUND_ROBIN_RATE.

I haven't had a chance to consider your case carefully enough to make a 
specific recommendation.  If you continue to have trouble, I recommend 
opening a help ticket with condor-admin@xxxxxxxxxxxx

--Dan