基于国产众核处理器三维地震声波正演模拟

3d seismic acoustic wave theory and calculation method are the basis of geological exploration research. By analyzing the propagation characteristics of acoustic waves in different media, we can apply the 3d seismic acoustic wave forward mod-eling in exploration work. In order to solve the problem of huge numerical calculation and large memory consumption while proceeding 3D seismic wave equation staggered grid finite difference forwarding model, we studied and implemented the parallel optimization on the heterogeneous many-core processors of the Sunway Taihulight supercomputer. Based on the implementation of a two-level parallel programming model by using MPI+Sunway Athread, we generated the DMA communication, 2.5D pipelining task division and other optimization strategies. The model with this improvement reduced the negative effects by bandwidth and greatly utilized the computing power. In large-scale conditions, we tackled the issue of low efficiency about program execution on SW26010 het-erogeneous many-core processors. The experimental results reveal that the performance of parallel-ism of a single node is much better than that of a master core. Another example is the calculation of solving numeri-cal stress is 80 times faster on the core group than that on the single master core. This experiment could keep a con-stant performance by using 266240 cores, 5.5GFlpos updates of field.