COSIRES (Computer Simulation of Radiation Effects in Solids) is a major international forum to present and discuss the recent achievements and advancement of computer modeling of materials effects produced by all forms of irradiation. Fundamental understanding of these phenomena is often not accessible by experiments, since they occur on very small time and length scales. A vigorous development of both computer hardware, software and theoretical methodologies occurred in recent years has pushed the field into the forefront of a modern science.