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This paper describes work in progress to develop a standard for interoperability among high-performance scientific components. This research stems from growing recognition that the scientific community needs to better manage the complexity of multidisciplinary simulations and better address scalable performance issues on parallel and distributed(More)
TeraGrid is a national-scale computational science facility supported through a partnership among thirteen institutions, with funding from the US National Science Foundation [1]. Initially created through a Major Research Equipment Facilities Construction (MREFC [2]) award in 2001, the TeraGrid facility began providing production computing, storage,(More)
Data management is growing in complexity as large-scale applications take advantage of the loosely coupled resources brought together by grid middleware and by abundant storage capacity. Metadata describing the data products used in and generated by these applications is essential to disambiguate the data and enable reuse. Data provenance, one kind of(More)
This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may(More)
Workflows have recently emerged as a paradigm for representing and managing complex distributed scientific computations and therefore accelerate the pace of scientific progress. A recent workshop on the Challenges of Scientific Workflows, sponsored by the National Science Foundation and held on May 1-2, 2006, brought together domain scientists, computer(More)
In this paper we describe a method for using data dependence analysis to estimate cache and local memory demand in highly iterative scientific codes. The estimates take the form of a family of " reference " windows for each variable that reflects the current set of elements that should be kept in cache. It is shown that, in important special cases, we can(More)
Security is one of the most important features for Grid services. There are several specifications used to add security to Grid services, and some of them have been implemented and are in use. However, since most of the security mechanisms involve slow XML manipulations, adding security to Grid services introduces a big performance penalty. In this paper,(More)