"My new research group was looking for a way to implement MEEP-mpi (MIT Electromagnetic Equation Propagation) to simulate EM fields in nanoscale optical devices for cavity QED experiments. We believe that Amazon EC2 is an economical and time saving solution for our finite difference time domain (FDTD) simulations. My group's research iterates between fabrication and simulation thus it is advantageous to buy computing power only when needed. Moreover it is a relief not to have to maintain our own small cluster within our group." Kai-Mei Fu, University of Washington (Seattle, USA)
ATOMS 
Demeter 
iFEFFIT