Call HOOMD with mpirun
Call HOOMD with mpirun

I'm currently only using this on ACCRE, and they recently switched over to HOOMD 1.0.5, and
updated the module file so that it must be run with mpirun. Eventually, this needs to be
fixed to be more general.

mosdef-hub/msibi,ctk3b/msibi,mosdef-hub/msibi