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Full-Text Articles in Physical Sciences and Mathematics

Technologies For Ubiquitous Supercomputing: A Java Interface To The Nexus Communication System, Ian Foster, George K. Thiruvathukal, Steven Tuecke Nov 2011

Technologies For Ubiquitous Supercomputing: A Java Interface To The Nexus Communication System, Ian Foster, George K. Thiruvathukal, Steven Tuecke

George K. Thiruvathukal

We use the term ubiquitous supercomputing to refer to systems that integrate low- and mid-range computing systems, advanced networks and remote high-end computers with the goal of enhancing the computational power accessible from local environments. Such systems promise to enable new applications in areas as diverse as smart instruments and collaborative environments. However, they also demand tools for transporting code between computers and for establishing flexible, dynamic communication structures. In this article, we propose that these requirements be satisfied by introducing Java classes that implement the global pointer and remote service request mechanisms defined by a communication library called Nexus. …


A Machine-Learning Approach For Workflow Identification From Low-Level Monitoring Information, Thorsten Stein Jan 2011

A Machine-Learning Approach For Workflow Identification From Low-Level Monitoring Information, Thorsten Stein

Theses

Knowing which workflows are executed within Service Oriented Architectures (SOA) is essential for successful IT management. In many cases, SOAs grew out of previous existing IT architectures; existing components are used as single services and therefore as parts of newly created workflows. Since such workflows consist of newly developed and legacy services, traditional workflow management systems often cannot be applied. This thesis presents a method for gathering information about the executed workflows within such heterogeneous environments. An implementation of a framework is presented. This framework allows the training of machine-learning algorithms with workflow models and the mapping of low-level monitoring …


Understanding The Need And Importance Of The Cloud Computing Environment Within The National Institute Of Food And Agriculture, An Agency Of The United States Department Of Agriculture, Festus Onyegbula, Maurice Dawson, Jeffrey Stevens Dec 2010

Understanding The Need And Importance Of The Cloud Computing Environment Within The National Institute Of Food And Agriculture, An Agency Of The United States Department Of Agriculture, Festus Onyegbula, Maurice Dawson, Jeffrey Stevens

Maurice Dawson

Aligning information systems to corporate goals has emerged as a leading concern over the last couple of decades. It is essential that we understand the need for cloud computing and how this technology can be implemented. Through this literature review we review theories of cloud computing and further elaborate on the theoretical framework for the implementation of cloud computing technology across organizations. We also detail cloud computing implementations across various governmental organizations and also across the industry. This review is expected to provide the current study with a more practical perspective on the issues and complexities of using cloud computing …