model2d        # basename,
model2d.grd    # modelfile,
model2d.slo    # slofile,
src1.dat       # srcfile,
src2.dat       # srcfile,
src3.dat       # srcfile,
rcv.dat        # rcvfile,
10             # secondary nodes,
1              # saveRayPaths,
3              # number of threads,
