LSF Version 7.3 - Administering Platform LSF

Administering Platform LSF 291
Specifying Resource Requirements
◆ The following job requests two resources with same duration but different
decay:
bsub -R "rusage[mem=20:duration=30:decay=1, lic=1:duration=30] myjob
Specifying alternative usage strings
If you use more than one version of an application, you can specify the version you
prefer to use together with a legacy version you can use if the preferred version is
not available. Use the
OR (||) expression to separate the different usage strings that
define your alternative resources.
Job-level resource requirement specifications that use the
|| operator are merged
with other
rusage requirements defined at the application and queue levels.
Job-level examples The following examples assume that you are running an application version 1.5 as
a resource called
app_lic_v15 and the same application version 2.0.1 as a resource
called
app_lic_v201. The license key for version 2.0.1 is backward compatible with
version 1.5, but the license key for version 1.5 will not work with 2.0.1
◆ If you can only run your job using version 2.0.1 of the application, submit the
job without specifying an alternate resource. To submit a job that will only use
app_lic_v201:
bsub -R "rusage[app_lic_v201=1]" myjob
◆ If you can run your job using either version of the application, try to reserve
version 2.0.1 of the application. If it is not available, you can use version 1.5. To
submit a job that will try
app_lic_v201 before trying app_lic_v15:
bsub -R "rusage[app_lic_v201=1||app_lic_v15=1]" myjob
◆ If different versions of an application require different system resources, you
can specify other resources in your
rusage strings. To submit a job that will use
20 MB of memory for
app_lic_v201 or 20 MB of memory and 50 MB of swap
space for
app_lic_v15:
bsub -R "rusage[mem=20:app_lic_v201=1||mem=20:swp=50:app_lic_v15=1]" myjob
How LSF merges rusage strings that contain the || operator
The following examples show how LSF merges job-level and queue-level rusage
strings that contain the
|| operator.
Non-batch environments
Resource reservation is only available for batch jobs. If you run jobs using only LSF
Base, such as through
lsrun, LIM uses resource usage to determine the placement
of jobs. Resource usage requests are used to temporarily increase the load so that a
Queue level RES_REQ=rusage… Job level bsub -R "rusage … Resulting rusage string
[mem=200:duration=180] [w1=1 || w2=1 || w3=1]" [w1=1: mem=200:duration=180 ||
w2=1: mem=200:duration=180 ||
w3=1: mem=200:duration=180]
[w1=1 || w2=1 || w3=1] [mem=200:duration=180]" [mem=200:duration=180:w1=1 ||
mem=200:duration=180:w2=1 ||
mem=200:duration=180:w3=1]