A New High Performance Scientific Computation Method for High Resolution Earth’s Gravity Field Model

This paper focuses on high performance and scientific computation method in high resolution Earth’s gravity field modeling, based on the semi-analysis method, OpenMP and MPI parallel computing method. A new high performance and scientific computing method is designed, which is validated by numerical experiments on computing error and computing efficiency. The semi-analysis can effectively reduce the computation and storage consumption in high resolutoin gravity field modeling; the time consumption of OpenMP+MPI hybrid parallel computing is only 1/18.4 that of sequential computing with 20 cores; the new computing method proposed in this paper with semi-analysis and OpenMP+MPI computing can be used on super computers for earth’s gravity field modeling, and the modeling of coefficients up to d/o 5399 can be completed within one day by using 80 CPUs on 4 nodes.