关于并行计算的代码，对于新手来说有很好的参考价值。-About code parallel computing, there is a good reference value for the novice.

mpi fortran wave equation solver code !cc MAIN is the main program for WAVE_MPI. !c !c Discussion: !c !c WAVE_MPI solves the wave equation in parallel using MPI. !c !c Discretize the equation for u(x,t): !c d^2 u/dt^2 - c^2 * d^2 u