Administering Platform LSF - SAS

Ways to Configure Fairshare
Ways to Configure Fairshare
Global fairshare
Configuring
Example
Chargeback fairshare
Configuring
Example
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 2 users compete for resources, their dynamic share priority is the same in
every queue.
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 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 2 users compete for resources, the most important user is entitled to more
resources.
To configure chargeback fairshare, put competing users in separate user
groups and assign a fair number of shares to each group.
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
2 Configure a host partition for the host, and assign the shares appropriately.
Begin HostPartition
HPART_NAME = big_servers
HOSTS = hostH
USER_SHARES = [eng_users, 7] [acct_users, 3]
End HostPartition
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Administering Platform LSF