Research and Preliminary Realization of Parallel Computing Technology of Yellow River Mathematical Model Based on MPI

Parallel program design of Yellow River 2D water-sand model was realized based on MPI(Message Passing Interface). Load balance of computing quantity was realized through regional division according to distributive torage of data. Between whole grids and part-region, the mapping relation was established. Also especial treatments were made through protocols at critical units, input & output units and shared nodes, which, on the one hand can decrease communication as much as possible, on the other hand, can avoid information-jam. The Parallel program can meet the demands of computing capacity and speed in Yellow River mathematical model.