Clusters are now the platform of choice in scalable, high-performance computing, and the current industrial efforts to further reduce communication latencies by bringing interconnects closer to processors promises will further enhance their importance as an architecture. Clusters thus play a critical role in defining current and future supercomputing. With this workshop, we hope to bring together leaders in cluster-based research in a productive forum both for exchanging knowledge and for fostering collaborations.

We received many good submissions on a wide variety of topics. We accepted nine of these submissions on a range of topics from application studies and cluster management to runtime systems and performance tuning. We hope that you find them as enjoyable and as useful as have we.

We wish to thank the people that helped to make this workshop possible. First, we thank Constantine Polychronopoulos, who encouraged us to organize the first workshop and who gave freely of his help and advice throughout the process. We next thank the authors for contributing their work and for their cooperation and patience with the process. Finally, Alex Veidenbaum, program chair for ICS'00, was helpful in bringing this second conference into being.