Letter of the program chairs

Since the creation of IEEE Cluster fifteen years ago, the area of cluster computing has witnessed fast and significant evolution. Clusters have progressively become the workhorse for computational science and engineering research, powering innovation and discovery that advance science and society. Clusters are now everywhere: they are the base for building today´s rapidly evolving cloud and HPC infrastructure, and are used to solve some of the most complex problems. The challenge to make them scalable, efficient, and more functional requires the common effort of the cluster community in the areas of cluster system design, management and monitoring — at hardware, system, middleware, and application level. The Cluster conference has precisely this goal: to be a major venue for such collective effort.