This tutorial is very similar to Installing and Configuring Environment Modules on CentOS 5 and the steps are very similar for CentOS 6 except that the tcl/tk 8.5.x used in CentOS repository does not have tclConfig.sh which is needed when you compile the Modules packages. I used 8.4.x which is similar to the version used in the CentOS 5 repository. You can use more more updated version of tcl

Step 1: Download the modules packages

Download the latest modules packages from Modules  Sourceforge Project Site.

Step 2. Download the tcl/tk package from tcl/tk download site

# tar -zxvf tcl8.4.19-src.tar.gz

# cd tcl8.4.19/unix

Step 2a. Compile the tcl package

# ./configure --prefix=/usr/local/tcl --enable-threads

# make && make install

Step 2b. Compile the tk package

# tar -zxvf tk8.4.19-src.tar.gz

# cd tk8.4.19

# ./configure --prefix=/usr/local/tk --with-tcl=/usr/local/tcl/lib

# make && make install

Make sure you put the tcl library in the /etc/ld.so.conf.d

# vim /etc/ld.so.conf.d/tclx-x86_64.conf

/usr/local/tcl/lib
/usr/local/tk/lib

Do a ldconfig to update dynamic linker run-time bindings

# /sbin/ldconfig

---

Step 3: Unpacked, Configure and Install

# tar -zxvf modules-3.2.9c.tar.gz

Go to the Modules folder ($ModuleHome)

# cd modules-3.2.9

I wanted to keep all my individual modules files at /usr/local/Modules/contents. You can keep module files anywhere you wish to keep.

# ./configure --with-module-path=/usr/local/Modules/contents

Make and install the configuration

# make && make install

Step 4:  Amend .modulefiles

Edit . modules to let Modules know where all the customized module files will be kept

# vim /usr/local/Modules/3.2.9/init/.modulespath

Comment out all the lines except the directory where all the customised modules files will be kept.

.....
.....
/usr/local/Modules/contents                             # General module files
.....
.....

Step 5: Update /etc/profile.d of the Servers

Copy the profile.modules from the $ModuleHome Directory

# cp /$ModuleHome/modules-3.2.9/etc/global/profile.modules /etc/profile.d/modules.sh

The content of modules.sh are as followed

#----------------------------------------------------------------------#
# system-wide profile.modules                                          #
# Initialize modules for all sh-derivative shells                      #
#----------------------------------------------------------------------#
trap "" 1 2 3

case "$0" in
-bash|bash|*/bash) . /usr/local/Modules/default/init/bash ;;
-ksh|ksh|*/ksh) . /usr/local/Modules/default/init/ksh ;;
-zsh|zsh|*/zsh) . /usr/local/Modules/default/init/zsh ;;
*) . /usr/local/Modules/default/init/sh ;; # sh and default for scripts
esac

trap 1 2 3

Create a softlink at /usr/local/Modules

# cd /usr/local/Modules
# ln -s 3.2.9 default

---

Sample Installation of an application using Modules (Intel Compilers)

Step 1: Create a Module File.

Place the Module File for Intel in /usr/local/Modules/contents

a. Create an Intel Folder inside /usr/local/Modules/contents

# mkdir /usr/local/Modules/contents/intel

b. Create a module file for the version of Intel (In my case, “12.0.2″). To save some time, you can copy a “sample” file and you can edit

# cp $ModuleHome/modules-3.2.9/modulefiles/modulefile /usr/local/Modules/contents/intel/12.0.2

# vim /usr/local/Modules/contents/intel/12.0.2

#%Module1.0
proc ModulesHelp { } {
global version prefix

puts stderr "\tIntel XE 12.0.2 (icc, icpc, ifort)"
}

module-whatis   "Intel XE 12.0.2 (icc, icpc, ifort)"

prepend-path    PATH            /opt/intel/composerxe/bin
prepend-path    LIBRARY_PATH    /opt/intel/composerxe/lib/intel64
prepend-path    LD_LIBRARY_PATH /opt/intel/composerxe/lib/intel64:/opt/intel/mkl/10.2.6.038/lib/em64t
prepend-path    MANPATH         /opt/intel/composerxe/man
prepend-path    MKL_HOME        /opt/intel/mkl/10.2.6.038

setenv CC       icc
setenv CXX      icpc
setenv FC       ifort
setenv F77      ifort
setenv F90      ifort

Step 2: Setting the Default versions of Intel.

If you have different version of software you wish to present to the users, do the following

# vim /usr/local/Modules/contents/intel/.version

#%Module1.0
set ModuleVersion "12.0.2"

More Information

1. Part 2 – Usage of Environment Modules on CentOS and in Cluster