This volume presents original articles, reviewing various aspects of scalable computing. Parallel computation with optically interconnected systems makes its first appearance, and further work on distributed Java is also reported. Optimizing data grids and group communication are studied in two analytical chapters. The comprehensive treatment of these topics adds further to the current literature.Contents:An OMIS-based Approach to Monitoring Distributed Java ApplicationsScalable and Self-Optimizing Data GridsThe Immediate Dependency RelationHighly Scalable Parallel Matrix Computing with Optical BusesReadership: Graduate students, academics and researchers in supercomputing (parallel computing).