[GE issues] [Issue 3212] New - default_duration INFINITY in scheduler shouldn't start backfilling

reuti reuti at staff.uni-marburg.de
Wed Dec 9 19:58:28 GMT 2009


http://gridengine.sunsource.net/issues/show_bug.cgi?id=3212
                 Issue #|3212
                 Summary|default_duration INFINITY in scheduler shouldn't start
                        | backfilling
               Component|gridengine
                 Version|6.2u4
                Platform|Macintosh
                     URL|
              OS/Version|All
                  Status|NEW
       Status whiteboard|
                Keywords|
              Resolution|
              Issue type|DEFECT
                Priority|P3
            Subcomponent|scheduling
             Assigned to|andreas
             Reported by|reuti






------- Additional comments from reuti at sunsource.net Wed Dec  9 11:58:25 -0800 2009 -------
Observed behavior:

- submit jobs with no h_rt requested but request a consumable resource
- the last job will in addition request a complex with high urgency, resource reservation and a huge amount of the consumable resource
- this last job will skip to top of waiting jobs, but smaller requests always slip in from the former jobs

Giving every job a dedicated runtime of 5 minutes gives the expected behavior: last job will reserve the consumable resource.

The problem might be in the default_duration being INFINITY and other jobs which also are seen with an estimated runtime of INIFINTY are
allowed to start backfilling.

There should be a different entry UNDEFINED (maybe also as value for -l h_rt=). Other UNDEFINED jobs shouldn't be eligible for backfilling
to avoid starvation in the default configuration.

They can of course be scheduled when there was a job submitted with an explicit -l h_rt=INFINITY.

Workaround for now: set the default_duration to 9999:00:00 instead of INFINITY

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