LSF Version 7.3 - Administering Platform LSF

Administering Platform LSF 235
Understanding Resources
Some examples of Boolean resources:
Shared resources
Shared resources are configured resources that are not tied to a specific host, but are
associated with the entire cluster, or a specific subset of hosts within the cluster. For
example:
◆ Floating licenses for software packages
◆ Disk space on a file server which is mounted by several machines
◆ The physical network connecting the hosts
LSF does not contain any built-in shared resources. All shared resources must be
configured by the LSF administrator. A shared resource may be configured to be
dynamic or static. In the above example, the total space on the shared disk may be
static while the amount of space currently free is dynamic. A site may also configure
the shared resource to report numeric, string or Boolean values.
An application may use a shared resource by running on any host from which that
resource is accessible. For example, in a cluster in which each host has a local disk
but can also access a disk on a file server, the disk on the file server is a shared
resource, and the local disk is a host-based resource. In contrast to host-based
resources such as memory or swap space, using a shared resource from one
machine affects the availability of that resource as seen by other machines. There
will be one value for the entire cluster which measures the utilization of the shared
resource, but each host-based resource is measured separately.
The following restrictions apply to the use of shared resources in LSF products.
◆ A shared resource cannot be used as a load threshold in the Hosts section of
the
lsf.cluster.cluster_name file.
◆ A shared resource cannot be used in the loadSched/loadStop thresholds, or in
the STOP_COND or RESUME_COND parameters in the queue definition in
the
lsb.queues file.
Resource Name Describes Meaning of Example Name
cs Role in cluster Compute server
fs Role in cluster File server
solaris Operating system Solaris operating system
frame Available software FrameMaker license