Environment Modules¶

Environment modules are useful to prepare the environment to compile and run your applications. Take a look at the official website:

http://modules.sourceforge.net/

You can use the yum repository to install as follow

 yum install environment-modules.x86_64

Or download the C release (as a gz package). Then uncompress it and install it on /opt:

./configure --prefix=/opt

Finally run make and make install:

make
make install

Now you have Envinroment modules installed on your machine, on version 3.2.10 (november 2013). Take a look at the installed directories:

ls /opt/Modules/3.2.10

Look for the profile script. It should be in /etc/profile.d/modules.sh

cat /etc/profile.d/modules.sh

If 'modules.sh' does not exist creat it with the folowing

nano /etc/profile.d/modules.sh 

#### BELLOW SHOULD BE ADDED TO THE FILE YOU CREATED ON TOP ####

trap "" 1 2 3

MID=/opt/Modules/3.2.10/init/

case "$0" in
    -bash|bash|*/bash) test -f $MID/bash && . $MID/bash ;;
       -ksh|ksh|*/ksh) test -f $MID/ksh  && . $MID/ksh ;;
          -sh|sh|*/sh) test -f $MID/sh   && . $MID/sh ;;
                    *) test -f $MID/sh   && . $MID/sh ;;        # default for scripts
esac

trap - 1 2 3

You may want to create your first module. Look at the examples and try to modify one of them to create your first module:

ls /opt/Modules/3.2.10/modulefiles/

Once you created your module, you have to specify where the module commands must look for you module files. So add the above directory to the hidden file .modulepath under /opt/Modules/3.2.10/init:

vi /opt/Modules/3.2.10/init/.modulespath

Once you created your module, exit and enter the shell again. Then, type module avail to see if the module is correctly loaded:

module avail

Finally, try to load the module:

module load

Some usefull module configuration