In the 07-Particles dirs there are sequential source code to be optimized and scripts for compiling and running on EURORA (with few changes on any other similar cluster). Tests have been realized with GNU compilers, but other C and Fortran compilers should do as well The generated image files could be assembled to create a video like stage.avi, 10 frames/sec During developing the program optimized version the "iterations for particle dynamics" param in Particles.inp could be changed in 10. Would you please read the comments in the source code for further instructions