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"host.processors=N+M": Dispatch to a worker with at least N to M open slots. Upon being dispatched to a worker, it occupies as many slots up to M, as slots free up.
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New in Qube! 6.5 Qube! 6.5 will allow for a more "dynamic" evaluation of the "host.processors=1+" or "host.processors=4-8" style of reservations. A "1+" reservation used to mean "all the slots", but there was no way to know how many slots it was allocated; there could be a 2-slot job already running on an 8-slot worker, and then the 1+ would just assume that it was getting all 8 slots and the worker would be over-scheduled for as long as both the 2-slot and the 1+ job were running at the same time. With Qube! 6.5, the reservations as evaluated on each worker at the time the job instance starts on the particular worker. So in the above example, the 2-slot job has already been allocated 2 worker slots, and when the 1+ instance starts, it's allocated the remaining 6 slots. |
Relevant environment variables
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