MT3DMSP - A parallelized version of the MT3DMS code

A new parallel version of MT3DMS has been developed and tested, called MT3DMS5P. A new solver, called SSOR-AI, is developed and tested. The new version decreases the computation time significantly. A parallelized version of the 3-D multi-species transport model MT3DMS was developed and tested. Specifically, the open multiprocessing (OpenMP) was utilized for communication between the processors. MT3DMS emulates the solute transport by dividing the calculation into the flow and transport steps. In this article, a new preconditioner, derived from Symmetric Successive Over Relaxation (SSOR) was added into the generalized conjugate gradient solver. This preconditioner is well suited and appropriate for the parallel architecture. A case study in the test field at TU Bergakademie Freiberg was used to produce the results and analyze the code performance. It was observed that most of running time would be required for the advection, dispersion. As a result, the parallel version decreases significantly running time of solute transport modeling. In addition, this work provides a first attempt to demonstrate the capability and versatility of MT3DMS5P to simulate the solute transport in fractured gneiss rock.