LSF Version 7.3 - Administering Platform LSF

Ways to Configure Fairshare
324 Administering Platform LSF
◆ User1 cannot associate the job with GroupC, because GroupC includes a
subgroup.
◆ User1 cannot associate the job with his individual user account, because
bsub -G only accepts group names.
Ways to Configure Fairshare
Global fairshare
Global fairshare balances resource usage across the entire cluster according to one
single fairshare policy. Resources used in one queue affect job dispatch order in
another queue.
If two users compete for resources, their dynamic share priority is the same in every
queue.
Configure global
fairshare
1 To configure global fairshare, you must use host partition fairshare. Use the
keyword
all to configure a single partition that includes all the hosts in the
cluster.
Begin HostPartition
HPART_NAME =GlobalPartition
HOSTS = all
USER_SHARES = [groupA@, 3] [groupB, 7] [default, 1]
End HostPartition
Chargeback fairshare
Chargeback fairshare lets competing users share the same hardware resources
according to a fixed ratio. Each user is entitled to a specified portion of the available
resources.
If two users compete for resources, the most important user is entitled to more
resources.
Configure
chargeback
fairshare
1 To configure chargeback fairshare, put competing users in separate user groups
and assign a fair number of shares to each group.
Example Suppose two departments contributed to the purchase of a large system. The
engineering department contributed 70 percent of the cost, and the accounting
department 30 percent. Each department wants to get their money’s worth from the
system.
1 Define 2 user groups in lsb.users, one listing all the engineers, and one listing
all the accountants.
Begin UserGroup
Group_Name Group_Member
eng_users (user6 user4)
acct_users (user2 user5)
End UserGroup