Administering Platform LSF - SAS

Chapter 9
Adding Resources
Configuring your application-specific SELIM
Naming your ELIM
Existing ELIMs
The master ELIM is installed as LSF_SERVERDIR/melim. After installation:
1 Define the external resources you need.
2 Write your application-specific SELIM to track these resources, as described
in “Writing an ELIM” on page 160.
3 Put your ELIM in LSF_SERVERIR.
Use the following naming conventions:
◆
◆
On UNIX, LSF_SERVERDIR/elim.application
For example, elim.license
On Windows, LSF_SERVERDIR\elim.application.[exe |bat]
For example, elim.license.exe
Your existing ELIMs do not need to follow this convention and do not need to be
renamed. However, since melim invokes any ELIM that follows this convention, you
should move any backup copies of your ELIM out of LSF_SERVERDIR or choose a name
that does not follow the convention (for example, use elim_bak instead of elim.bak).
elim.user is
reserved
The name elim.user is reserved for backward compatibility. Do not use the
name elim.user for your application-specific elim.
How LSF uses ELIM for external resource collection
When an ELIM is
started
The values of static external resources are specified through the
lsf.cluster.cluster_name configuration file. The values of all dynamic
resources, regardless of whether they are shared or host-based, are collected
through an ELIM.
An ELIM is started in the following situations:
◆ On every host, if any dynamic resource is configured as host-based. For
example, if the LOCATION field in the ResourceMap section of
lsf.cluster.cluster_name is ([default]), then every host will start
an ELIM.
◆ On the master host, for any cluster-wide resources. For example, if the
LOCATION field in the ResourceMap section of
lsf.cluster.cluster_name is ([all]), then an ELIM is started on the
master host.
◆ On the first host specified for each instance, if multiple instances of the
resource exist within the cluster. For example, if the LOCATION field in the
ResourceMap section of lsf.cluster.cluster_name is ([hostA
hostB hostC] [hostD hostE hostF]), then an ELIM will be stared on
hostA and hostD to report the value of that resource for that set of hosts.
If the host reporting the value for an instance goes down, then an ELIM is
started on the next available host in the instance. In above example, if
hostA became unavailable, an ELIM is started on hostB. If the hostA
becomes available again then the ELIM on hostB is shut down and the one
on hostA is started.
Administering Platform LSF 159