Administering Platform LSF - SAS

Chapter 33
Running Interactive and Remote Tasks
Resource usage
Resource reservation is only available for batch jobs. If you run jobs using only
LSF Base, LIM uses resource usage to determine the placement of jobs.
Resource usage requests are used to temporarily increase the load so that a
host is not overloaded. When LIM makes a placement advice, external load
indices are not considered in the resource usage string. In this case, the syntax
of the resource usage string is
res[=value]:res[=value]: ... :res[=value]
The res is one of the resources whose value is returned by the lsload
command.
rusage[r1m=0.5:mem=20:swp=40]
The above example indicates that the task is expected to increase the 1-minute
run queue length by 0.5, consume 20 MB of memory and 40 MB of swap space.
If no value is specified, the task is assumed to be intensive in using that
resource. In this case no more than one task will be assigned to a host
regardless of how many CPUs it has.
The default resource usage for a task is r15s=1.0:r1m=1.0:r15m=1.0. This
indicates a CPU-intensive task which consumes few other resources.
Running a task on a specific host
If you want to run your task on a particular host, use the lsrun -m option:
% lsrun -m hostD mytask
Running a task by using a pseudo-terminal
Submission of interaction jobs using pseudo-terminal is not supported for
Windows for either lsrun or bsub LSF commands.
Some tasks, such as text editors, require special terminal handling. These tasks
must be run using a pseudo-terminal so that special terminal handling can be
used over the network.
The -P option of lsrun specifies that the job should be run using a pseudoterminal:
% lsrun -P vi
Running the same task on many hosts in sequence
Running parallel tasks
The lsgrun command allows you to run the same task on many hosts, one
after the other, or in parallel.
For example, to merge the /tmp/out file on hosts hostA, hostD, and hostB
into a single file named gout, enter:
% lsgrun -m "hostA hostD hostB" cat /tmp/out >> gout
lsgrun -p
The -p option tells lsgrun that the task specified should be run in parallel.
See lsgrun(1) for more details.
To remove the /tmp/core file from all 3 hosts, enter:
% lsgrun -m "hostA hostD hostB" -p rm -r /tmp/core
Administering Platform LSF 417