PP-732
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Getting issue details...
STATUS
Overview:
- Using placement sets it is created a pool of nodes with unset resource. When scheduler tries to run a job, it considers to fit a job into this pool. The value of unset resource is "\"\"". A new parameter allows to control whether or not this pool is created.
Interface 1: only_explicit_psets
- Visibility: Public
- Change Control: stable
- Synopsis: scheduler attribute; attribute can control creation of pool of nodes with unset resource in placement sets
- Details: Scheduler attribute. Specifies whether or not the scheduler creates a pool of nodes with unset resource in placement sets. Default value is False.
- Set to False means: The behavior is unchanged. The pool with unset resource is created. If you use placement sets, scheduler creates pools of nodes: one pool per value and one pool for nodes with unset value. The scheduler tries to fit a job into the pools from the smallest one to the largest one.
- Set to True means: The pool with unset resource is NOT created and the nodes with unset resources are skipped in this placement set.
- Example:
- create resource infiniband
set resource infiniband type = string
set resource infiniband flag = h
...
set node n1 infiniband = A
set node n2 infiniband = B
unset node n3 infiniband
set sched do_not_span_psets = True
set sched only_explicit_psets = True
$ qsub -l place=group=infiniband
The job can run on n1 or n2 but will never run on n3 with 'only_explicit_psets = True'.
- create resource infiniband