[Mauiusers] confused about standing reservations

Douglas Wightman wightman at adaptivecomputing.com
Wed Feb 3 16:43:24 MST 2010


Can you modify your reservation to use SRCFG[] rather than the older SR* parameters?

If that doesn't help then please post the output of mdiag -r.  

Standing reservations can be easier to use than cron jobs once they are configured correctly.  

- Douglas

----- "Steve Johnson" <steve at isc.tamu.edu> wrote:

> I've used SR's with decent success for blocking out access during lab
> times.
> 
> Example:
> SRCFG[bloc122mw] GROUPLIST=root
> SRCFG[bloc122mw] STARTTIME=07:30:00
> SRCFG[bloc122mw] ENDTIME=17:00:00
> SRCFG[bloc122mw] DAYS=MON,WED
> SRCFG[bloc122mw] HOSTLIST=bloc122-[00-32]
> 
> I also do pbsnodes -o via cron to mark the nodes offline so that
> Globus MDS
> reports the correct number of available nodes.  It also provides a
> second
> layer of protection against a job starting when it's not suppose to.
> 
> It's a different story when using SR's in place of partitions.  I
> just
> couldn't get it to behave as desired in terms of keeping jobs from
> particular
> classes separated, so I went back to partitions.
> 
> // Steve
> 
> 
> Tom Rudwick wrote:
> > I recommend not using standing reservations. We found them to be
> buggy and
> > unreliable. I recommend using cron jobs to create regular
> reservations.
> > 
> > Tom
> > 
> > 
> > skip at pobox.com wrote:
> >> I'm trying to use standing reservations (Maui 3.2.6p21) to avoid
> running
> >> jobs on certain nodes during work hours.  For example:
> >>
> >>     SRSTARTTIME[userver171]     07:00:00
> >>     SRENDTIME[userver171]       16:00:00
> >>     SRPERIOD[userver171]        DAY
> >>     SRDAYS[userver171]          MON TUE WED THU FRI
> >>     SRHOSTLIST[userver171]      userver171
> >>     SROWNER[userver171]         USER:kim
> >>     SRMAXTIME[userver171]       5:00:00
> >>
> >> I interpreted the above to mean that on weekdays jobs can only be
> run on
> >> userver171 by Kim between 07:00 and 16:00.
> >>
> >> This doesn't seem to work.  Jobs continue to be placed on that
> machine
> >> during the reserved period.
> >>
> >> Is the assignment of jobs to nodes done dynamically or at the time
> of job
> >> submission? 
> >>
> >> Thanks,
> >>
> >>   
> > 
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