[Mauiusers] confused about standing reservations
steve at isc.tamu.edu
Wed Feb 3 16:37:27 MST 2010
I've used SR's with decent success for blocking out access during lab times.
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.
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.
> 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
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