The Global Model Test Bed (GMTB) has been tasked to develop a Common Community PhysicsPackage (CCPP) for use within operational centers and the research community. Such a framework allows for a relatively small number of supported suites of physical parameterizations to be supported and easily shared among interested groups. Operational centers can draw from this repository for operational NWP, the research community has access to the same codes for R&D, and innovations can be effectively tested and funneled back to operational centers to improve forecasts.