It seems there is a real appetite for MPI codes on ScotGrid at the moment. First off there was Optics running Lumerical's FDTD FDTD and now we have UKQCD running Chroma. Next up is an MPICH install of CASTEP for Solid State Physics. So nearly 2 years after it was first enabled at ScotGrid it is finally seeing it's first tour of duty. Better late than never. We still have some kinks to iron out such as better scheduling of MPI on our cluster but early results from benchmarking are promising even for an ethernet based MPI solution!