I just installed openSUSE 11.1; not that it's relevant.

But I also installed the Intel Compilers, c++, fortran and openMPI...

The problem is, when I type the commands to invoke them such as; icc, ifort, mpirun

bash : command not found

I have to manually source to the .sh file in order to use the commands.

like.

source /opt/intel/cce/10.0.024/bin/iccvars.sh

in order to invoke the command "icc" at the command prompt.

I think it's pretty obvious what my question is going to be: how do I automatically source these commands on boot?

Just copy iccvars.sh and ifortvars.sh into /etc/profile.d. Take in mind that all the shell scripts into /etc/profile.d are sourced every time you login, hence this is one of the most useful ways to automate this task for many applications.

The same for mpivars.sh. If you installed openmpi from the RPM package, you should find it under /usr/lib/mpi/gcc/openmpi/bin/.

Strictly speaking, I assume, icc is not needed at boot time, but rather you need it inside a shell. So, since you are using bash, you could as well put this in your ~/.bash_profile.