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In production Grids for scientific applications, service and resource failures must be detected and addressed quickly. In this paper, we describe the monitoring infrastructure used by the Earth System Grid (ESG) project, a scientific collaboration that supports global climate research. ESG uses the Globus Toolkit Monitoring and Discovery System (MDS4) to(More)
Methods for describing structured data are a key aid in application development. The MPI standard defines a system for creating " MPI types " at run time and using these types when passing messages, performing RMA operations, and accessing data in files. Similar capabilities are available in other middleware. Unfortunately many implementations perform(More)
Highly parallel applications often make use of either highly parallel file systems or large numbers of independent disks. Either of these approaches can provide high data rates necessary for parallel applications. However, the failure of a single disk or server can render the data useless. Conventional techniques, such as those based on applying erasure(More)
We introduce and discuss preliminary experience with an application that has vast potential to exploit the Grid for social benefit and offers interesting resource assessment and allocation challenges, having real-time aspects: image registration. Image registration is generally formulated as an optimization problem that satisfies constraints, such as(More)
In this paper, we discuss recent development and implementation efforts by the Earth System Grid (ESG) concerning its security infrastructure. ESG's requirements are to make user logon as easy as possible and to facilitate the integration of security services and Grid components for both developers and system administrators. To meet that goal, we leverage(More)
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