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Special Issue on Clusters, Clouds, and Data for Scientific Computing; Guest Editors: J. Dongarra & B. TourancheauNo Access

GFFS — THE XSEDE GLOBAL FEDERATED FILE SYSTEM

    Federated, secure, standardized, scalable, and transparent mechanism to access and share resources, particularly data resources, across organizational boundaries that does not require application modification and does not disrupt existing data access patterns has been needed for some time in the computational science community. The Global Federated File System (GFFS) addresses this need and is a foundational component of the NSF-funded eXtreme Science and Engineering Discovery Environment (XSEDE) program. The GFFS allows user applications to access (create, read, update, delete) remote resources in a location-transparent fashion. Existing applications, whether they are statically linked binaries, dynamically linked binaries, or scripts (shell, PERL, Python), can access resources anywhere in the GFFS without modification (subject to access control). In this paper we present an overview of the GFFS and its most common use cases: accessing data at an NSF center from a home or campus, accessing data on a campus machine from an NSF center, directly sharing data with a collaborator at another institution, accessing remote computing resources, and interacting with remote running jobs. We present these uses cases and how they are realized using the GFFS.