Building Bridges from the Campus to XSEDE

XSEDE is the integration framework for national-scale, public HPC resources in the United States. XSEDE is used by thousands of researchers at hundreds of college and university campuses throughout the country, as well as many international collaborators. Over the past several program years, XSEDE has redefined its identity management, security, and service interfaces to bridge the gap between national-scale HPC resources and campus-based computing resources. These changes make it easier for research performed on campus to access our national computing resources and make them a part of the everyday research process. We report here on XSEDE´s new identity management system and how it provides a smooth bridge between campus and national identity systems. We also describe how this federated security system supports two additional bridges between campuses and national HPC services, one involving data movement and another involving scientific workflows.