LSF Version 7.3 - Platform LSF Configuration Reference

type
Description
Host type as defined in the HostType section of lsf.shared
The strings used for host types are determined by the system administrator: for example,
SUNSOL, DEC, or HPPA. The host type is used to identify binary-compatible hosts.
The host type is used as the default resource requirement. That is, if no resource requirement
is specified in a placement request, the task is run on a host of the same type as the sending
host.
Often one host type can be used for many machine models. For example, the host type name
SUNSOL6 might be used for any computer with a SPARC processor running SunOS 6. This
would include many Sun models and quite a few from other vendors as well.
Optionally, the ! keyword for the model or type column, indicates that the host model or type
is to be automatically detected by the LIM running on the host.
Threshold fields
The LIM uses these thresholds in determining whether to place remote jobs on a host. If one
or more LSF load indices exceeds the corresponding threshold (too many users, not enough
swap space, etc.), then the host is regarded as busy, and LIM will not recommend jobs to that
host.
The CPU run queue length threshold values (r15s, r1m, and r15m) are taken as effective queue
lengths as reported by lsload -E.
All of these fields are optional; you only need to configure thresholds for load indices that you
wish to use for determining whether hosts are busy. Fields that are not configured are not
considered when determining host status. The keywords for the threshold fields are not case
sensitive.
Thresholds can be set for any of the following:
•
The built-in LSF load indexes (r15s, r1m, r15m, ut, pg, it, io, ls, swp, mem, tmp)
•
External load indexes defined in the Resource section of lsf.shared
ResourceMap section
The ResourceMap section defines shared resources in your cluster. This section specifies the
mapping between shared resources and their sharing hosts. When you define resources in the
Resources section of lsf.shared, there is no distinction between a shared and non-shared
resource. By default, all resources are not shared and are local to each host. By defining the
ResourceMap section, you can define resources that are shared by all hosts in the cluster or
define resources that are shared by only some of the hosts in the cluster.
This section must appear after the Host section of lsf.cluster.cluster_name, because it
has a dependency on host names defined in the Host section.
ResourceMap section structure
The first line consists of the keywords RESOURCENAME and LOCATION. Subsequent lines
describe the hosts that are associated with each configured resource.
lsf.cluster
384 Platform LSF Configuration Reference