LSF Version 7.3 - Administering Platform LSF

Administering Platform LSF 315
Fairshare Scheduling
2 When queue Verona has done its work, queues Roma and Genova get their
respective shares of 8 and 3. This leaves 4 slots to be redistributed to queues
according to their shares: 50% (2 slots) to
Roma, 20% (1 slot) to Genova. The one
remaining slot is assigned to queue
Roma again:
bqueues
QUEUE_NAME PRIO STATUS MAX JL/U JL/P JL/H NJOBS PEND RUN SUSP
Roma 50 Open:Active - - - - 231 221 11 0
Verona 48 Open:Active - - - - 0 0 0 0
Genova 48 Open:Active - - - - 496 491 4 0
3 When queues Roma and Verona have no more work to do, Genova can use all
the available slots in the cluster:
bqueues
QUEUE_NAME PRIO STATUS MAX JL/U JL/P JL/H NJOBS PEND RUN SUSP
Roma 50 Open:Active - - - - 0 0 0 0
Verona 48 Open:Active - - - - 0 0 0 0
Genova 48 Open:Active - - - - 475 460 15 0
The following figure illustrates phases 1, 2, and 3:
2 pools, 30 job slots, and 2 queues out of any pool
◆ poolA uses 15 slots and contains queues Roma (50% share, 8 slots), Verona (30%
share, 5 slots), and
Genova (20% share, 2 remaining slots to total 15).
◆ poolB with 15 slots containing queues Pisa (30% share, 5 slots), Venezia (30%
share, 5 slots), and
Bologna (30% share, 5 slots).
◆ Two other queues Milano and Parma do not belong to any pool, but they can
use the hosts of
poolB. The queues from Milano to Bologna all have the same
priority.