Administering Platform LSF - SAS

Network Floating Licenses
Licenses used outside of LSF control
Example
lsf.shared
To handle the situation where application licenses are used by jobs outside of
LSF, use an ELIM to dynamically collect the actual number of licenses available
instead of relying on a statically configured value. The ELIM periodically
informs LSF of the number of available licenses, and LSF takes this into
consideration when scheduling jobs.
Assuming there are a number of licenses for the Verilog package that can be
used by all the hosts in the cluster, the LSF configuration files could be set up
to monitor this resource as follows:
Begin Resource
RESOURCENAME TYPE INTERVAL INCREASING DESCRIPTION
verilog Numeric 60 N (Floating
licenses for Verilog)
End Resource
lsf.cluster.cluster_name
Begin ResourceMap
RESOURCENAME LOCATION
verilog
([all])
End ResourceMap
The INTERVAL in the lsf.shared file indicates how often the ELIM is
expected to update the value of the Verilog resource—in this case every 60
seconds. Since this resource is shared by all hosts in the cluster, the ELIM only
needs to be started on the master host. If the Verilog licenses can only be
accessed by some hosts in the cluster, specify the LOCATION field of the
ResourceMap section as ([hostA hostB hostC ...]). In this case an ELIM
is only started on hostA.
Submitting jobs
The users would submit jobs requiring verilog licenses as follows:
% bsub -R "rusage[verilog=1:duration=1]" myprog
Configuring a dedicated queue for floating licenses
Example
Whether you run all license jobs through LSF or run jobs that use licenses that
are outside of LSF control, you can configure a dedicated queue to run jobs
requiring a floating software license.
For each job in the queue, LSF reserves a software license before dispatching
a job, and releases the license when the job finishes.
Use the bhosts -s command to display the number of licenses being reserved
by the dedicated queue.
The following example defines a queue named q_verilog in lsb.queues
dedicated to jobs that require Verilog licenses:
Begin Queue
QUEUE_NAME = q_verilog
RES_REQ=rusage[verilog=1:duration=1]
End Queue
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Administering Platform LSF