LSF Version 7.3 - Platform LSF Configuration Reference

•
Users not included in any other share assignment, individually (specify the keyword
default@) or collectively (specify the keyword default).
Note:
By default, when resources are assigned collectively to a
group, the group members compete for the resources on a first-
come, first-served (FCFS) basis. You can use hierarchical
fairshare to further divide the shares among the group
members. When resources are assigned to members of a
group individually, the share assignment is recursive. Members
of the group and of all subgroups always compete for the
resources according to FCFS scheduling, regardless of
hierarchical fairshare policies.
•
number_shares—Specify a positive integer representing the number of shares of the cluster
resources assigned to the user. The number of shares assigned to each user is only
meaningful when you compare it to the shares assigned to other users or to the total number
of shares. The total number of shares is just the sum of all the shares assigned in each share
assignment.
User section
Optional. If this section is not defined, all users and user groups can run an unlimited number
of jobs in the cluster.
This section defines the maximum number of jobs a user or user group can run concurrently
in the cluster. This is to avoid situations in which a user occupies all or most of the system
resources while other users’ jobs are waiting.
Structure
Three fields are mandatory: USER_NAME, MAX_JOBS, JL/P.
MAX_PEND_JOBS is optional.
You must specify a dash (-) to indicate the default value (unlimited) if a user or user group is
specified. Fields cannot be left blank.
Example of a User section
Begin User
USER_NAME MAX_JOBS JL/P MAX_PEND_JOBS
user1 10 - 1000
user2 4 - -
user3 - - -
groupA 10 1 100000
groupA@ - 1 100
groupC - - 500
default 6 1 10
End User
USER_NAME
User or user group for which job slot limits are defined.
Use the reserved user name default to specify a job slot limit that applies to each user and user
group not explicitly named. Since the limit specified with the keyword default applies to user
groups also, make sure you select a limit that is high enough, or explicitly define limits for user
groups.
lsb.users
Platform LSF Configuration Reference 361