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Interface 1: Extend PBS to support a list of scheduler objects
- Visibility: Public
- Change Control: Stable
- Details:
- PBS supports a list of scheduler objects to be created using qmgr. It is similar to how we create nodes in server.
- qmgr command can be used to create a scheduler object . It must be invoked by a PBS admin/manager.
- To create a scheduler object and make it run, the following are the attributes that can be set by the user
- Name of the scheduler is mandatory to be given while creating a scheduler object.
- qmgr -c "c sched multi_sched_1"
- This will create/set the following attributes for the sched object
- port - If not defined by the user, It will start from 15050 and try to run the scheduler on the next available port number.
- partition = "None" (default)*
- sched_priv = $PBS_HOME/sched_priv_multi_sched_1 (default)*
- sched_log = $PBS_HOME/sched_log_multi_sched_1 (default)*
- scheduling = False (default)*
- scheduler_iteration = 600 (default)*
- sched_user = <pbs_server user> (default)
- job_sort_formula_threshold
- comment
sites can use the comment field to
notify them if scheduler undergoes restarting 2-3 times due to potential crashes in an hour for example (i.e. comment => “NEEDS_ATTENTION”)
tell when a particular scheduler is ready to function again by setting the comment as follows.
comment => “READY_TO_USE
- This will create/set the following attributes for the sched object
- qmgr -c "c sched multi_sched_1"
- Name of the scheduler is mandatory to be given while creating a scheduler object.
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Interface 9: Deleted
Notes:
- What does is not work supported when multiple scheduler objects are present.
- When there are multiple scheduler objects configures following things might be brokenWith the introduction of this feature following things are not supported.
- Run limits set on server may seem to be broken are not supported because a scheduler object may does not have a view of the whole of the PBS universe.
- Fairshare is now only limited to what a specific scheduler views, it can not be done complex wide with multiple schedulersscheduling policy per whole PBS complex is not supported going forward instead this policy can be limited to each individual scheduler.
- When there are multiple scheduler objects configures following things might be brokenWith the introduction of this feature following things are not supported.