Use the module command to manage modules.
You can find information on common module operations below. For full details, see the module man page.
List available modules
Use the module avail command to list all modules available on the system.
> module avail
-------------------------------------------------------- /cm/local/modulefiles ---------------------------------
cluster-tools/6.0 freeipmi/1.1.3 module-info shared torque/4.1.3(default)
cmd ipmitool/1.8.11 null torque/4.1.0 use.own
dot moab/7.1.0(default) openldap torque/4.1.2 version
-------------------------------------------------------- /cm/shared/modulefiles --------------------------------
blas/gcc/64/1 gcc/4.6.3 intel/impi/4.0.3 mpiexec/0.84
blas/open64/64/1 gcc/4.7.1 intel/impi/4.1.0 mpiexec/0.84_432
bonnie++/1.96 gsl/gcc/1.15 intel/mkl/10.3.11 netcdf/gcc/64/4.2
cmgui/6.0 gsl/intel/1.15 intel/mkl/11.0.0 netperf/2.5.0
default-environment hdf5/1.6.10 intel/tac/8.0.3 openmpi/gcc/1.6.3
fftw2/gcc/64/double/2.1.5 hpl/2.0 intel/tbb/4.0.5 openmpi/gcc/64/1.4.5
fftw2/gcc/64/float/2.1.5 hwloc/1.3.1 iozone/3_398 python/2.4.6
fftw2/open64/64/double/2.1.5 intel/compilers/12.1.0 lapack/gcc/64/3.4.0 python/2.7.3
fftw2/open64/64/float/2.1.5 intel/compilers/12.1.5 lapack/open64/64/3.4.0 python/3.2.3
fftw3/gcc/64/3.3.1 intel/compilers/13.0.0 mam/current suitesparse/4.0.1
gcc/4.5.4 intel/compilers/current moab/7.1.1-r15-b49-EL5
Interrogate a module
Use the module display command to list the actions that a module will perform on being loaded. Some modules do nothing except set some environment variables, so this is useful for finding out exactly what a module does:
> module display python/3.1.2
--------------------------------------------------------------
/cm/shared/modulefiles/python/3.1.2:
module-whatis Loads the Python 3.1.2 software environment
setenv root /cm/shared/apps/python
prepend-path PATH /cm/shared/apps/python/3.1.2/bin
prepend-path LD_LIBRARY_PATH /cm/shared/apps/python/3.1.2/lib
prepend-path MANPATH :ignore:/cm/shared/apps/python/3.1.2/share/man
--------------------------------------------------------------
Load a module
Use the module load command to make the specified application available. For example to make Python version 3.1.2 available:
> module load python/3.1.2
This would make the python3 command and associated Python libraries available.
Modules will take care of their own dependencies, and in general, loading one version of an application's module will unload another one already present in order to avoid conflicts.
List currently loaded modules
Use the module list command to see which modules are currently loaded:
> module list
Currently Loaded Modulefiles:
1) torque/2.4.7 2) moab/5.4.0 3) python/3.1.2
The torque and moab modules are automatically when you log in and should always be available.
Unload a module
Use the `module unload` command to remove the specified module from the current environment. For example, to make Python version 3.1.2 unavailable:
> module unload python/3.1.2
Purge Modules
Use the module purge command to unload all modules, except for the torque and moab modules. These cannot be removed as they are required for job submission
> module purge
> module list
Currently Loaded Modulefiles:
1) torque/2.4.7 2) moab/5.3.6