LSF Version 7.3 - Platform LSF Configuration Reference

lsb.hosts
The lsb.hosts file contains host-related configuration information for the server hosts in the cluster. It is also used
to define host groups and host partitions.
This file is optional. All sections are optional.
By default, this file is installed in LSB_CONFDIR/cluster_name/configdir.
Changing lsb.hosts configuration
After making any changes to lsb.hosts, run badmin reconfig to reconfigure mbatchd.
Host section
Description
Optional. Defines the hosts, host types, and host models used as server hosts, and contains
per-host configuration information. If this section is not configured, LSF uses all hosts in the
cluster (the hosts listed in lsf.cluster.cluster_name) as server hosts.
Each host, host model or host type can be configured to:
•
Limit the maximum number of jobs run in total
•
Limit the maximum number of jobs run by each user
•
Run jobs only under specific load conditions
•
Run jobs only under specific time windows
The entries in a line for a host override the entries in a line for its model or type.
When you modify the cluster by adding or removing hosts, no changes are made to
lsb.hosts. This does not affect the default configuration, but if hosts, host models, or host
types are specified in this file, you should check this file whenever you make changes to the
cluster and update it manually if necessary.
Host section structure
The first line consists of keywords identifying the load indices that you wish to configure on
a per-host basis. The keyword HOST_NAME must be used; the others are optional. Load
indices not listed on the keyword line do not affect scheduling decisions.
Each subsequent line describes the configuration information for one host, host model or host
type. Each line must contain one entry for each keyword. Use empty parentheses ( ) or a dash
(-) to specify the default value for an entry.
HOST_NAME
Required. Specify the name, model, or type of a host, or the keyword default.
host name
The name of a host defined in lsf.cluster.cluster_name.
host model
A host model defined in lsf.shared.
lsb.hosts
220 Platform LSF Configuration Reference