This package computes seismic ray tracing through a mesh,and computes some scores based on ray information.Requirement===========-libraydecartes-libmeshParallel implementation=======================The parallel implementation is based on MPI code.It can be activated at configure time with./configure --with-mpi-name=<name of the mpi lib>i.e. mpich if you have libmpich.{a,so} or mpi for libmpi.{a,so}installed.Additionnal argument --with-mpi-prefix can be used to specifywhich mpi library and includes should be used.At present, the MPI implementation is as follows :o -i option is mandatory and the ray data input file must  be accessible for the MASTER processo The MASTER process (default is process 0) reads the entire  ray data file and distributes an equal share of ray data  to all processes (to itself as well). If the number of lines  is not a multiple of the number of processes, the remainder  is treated by the master.o MASTER/SLAVE modeo the -o <ofile> option that normally defines the output file,   renames <ofile> to <ofile>-<process_number> and each process  writes its output to its own disk space. The various output  files should be then merged into one to have an equivalent  result as a sequential execution.Importation of ray2mesh score in a mesh=======================================always use -r (raw output) to generate ray2mesh score filethat would be imported with the mesh package.ray2mesh -m iasp.xml -i file.ray -o score.r2m -rmesh -i score.r2m-0,...,score.r2m-i -o mesh-score.vtk