I followed the instruction provided in the lecture to run a kinit command before mpirun. However, mpirun still complained that it is not able to use the computers I included in my machinefile. Here is the screenshot of the command that I have run.
It seems that the cdf admins do not allow you to ssh to a workstation.
I will inquire about it.
But you can still use wolf with a few cores so that you at least run something on parallel cores.