= Introduction =
This page ilustrates MUSCLization of real astrophysics code [http://piernik.astri.umk.pl/ PIERNIK] ("Gingerbread").

= The orginal code =
- monolitic
- fortran
- MPI/HDF5 dependency
- high scalability of the main MHD module
- propotype particule simulation Monte Carlo module
- coupling done via global variables
= The goal =
- couple using MUSCLE, why?
 * the coupling is done one way (from MHD to MC), this brings a potential of introducing new level of parallelism (in curent code MHD and MC simulations are called one after another, sequentially)
 * the MC is in process of GPU-enabling, one may want to run both modules on different heterogenous resources (i.e. MC on GPU cluster, base MHD code on Intel Nehalem cluster)
= The code =