PCTM Description
The Parallel Climate Transitional Model (PCTM) is the next generation of the Parallel Climate Model. It is made up of atmosphere, ocean, land-surface, and sea-ice component models, and a coupler to exchange fluxes between the component models. The atmospheric model is a recent version of the Community Climate Model, developed at the National Center for Atmospheric Research (NCAR). The ocean model is POP (Parallel Ocean Program), developed at Los Alamos National Laboratory (LANL), the National Physical Laboratory (NPL), and NCAR.
The code is run as pure MPI. Each component utilizes a different parallelization strategy, and has significantly different performance characteristics.