Dear All, I made a definition of the pyrochlore lattice (lattices.xml) and put it at a repository https://github.com/kadowaki-h/LatticesPyrochloreCubic. A simple example of calculating specific heat C(T, H=0) of the NN Spin Ice model is also given in the repository. Best wishes, Hiroaki Kadowaki Department of Physics, Tokyo Metropolitan University Hachioji-shi, Tokyo 192-0397, Japan kadowaki@tmu.ac.jp