In order to create systems of vibroseismic monitoring for earthquakeprone areas it is needed to carry out the simulation of seismic wave propagation in the media typical of volcanic structures. To this end it is required to develop supercomputer technologies for decreasing the computation time and simulation of "big" 3D elastic media. Analysis of the efficiency of two parallel implementations of algorithms for solving the 3D elastodynamic problem written in different terms is carried out with the co-design. The software has been developed for both approaches and optimized for the architecture of a supercomputer equipped with GPU. A comparative analysis of the computation time, the size of the memory used and the software scalability is made.