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Load Share Facility (LSF) Job Scheduler: Commands to set up your Environment

Module Commands in an LSF 10.1 Environment

Note: In the following descriptions, the symbols “$” is used to indicate a LINUX terminal command prompt.

The LSF Job Scheduler in the CAD Compute Cluster runs constantly, and never has to be started. It has been configured with certain queues that handle requests for cores and memory. Any command prefaced by the letters ls or b is interpreted as a request for information about the cluster and its environment or set-up.

For example, to list the names of all nodes in the cluster with their static resources (cores and memory, plus other information):

$ lshosts

To display the available queues for batch operation with assigned levels of priority, or ‘niceness’:

$ bqueues

When logging into the CAD Compute Cluster, you will be in a standard LINUX environment with a default bash shell. This is a basic operating environment. More information about the bash shell is provided in the tutorials section here https://linuxconfig.org/

The LSF commands shown here are variations on the module key word.

To see a complete list of these variations:

$ module –help

The generic command structure is:

Usage: module [ switches ] [ subcommand ] [ subcommand – arguments ]

Discovering the CAD System Contents/Loaded Software

To report which module files are currently loaded in the environment:

$ module list

To report which tools and software have been installed under the directories:

    • usr/share/Modules/modulefiles  (bundled with the job scheduler)
    • CMC/modules/  (CAD tools installed by CMC Microsystems’ administrators)

$ module avail

Installing CAD Tools before a Simulation Run

To add a module to the user’s current environment (applies only to the terminal window in which it is called):

$ module load

To remove a module from the user’s current environment:

$ module unload

To swap modules as directed by the subcommands:

$ module switch

Information about the Modules

To find more detail about the specified module:

$ module whatis

To find PATH and environment variables for a particular module or tool name:

$ module show/display

Reference

https://www.ibm.com/support/knowledgecenter/en/SSWRJV_10.1.0/lsf_welcome/lsf_welcome.html

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