Bazahn Globus Toolkit is an incremental release of the Globus Toolkit containing test. Users can download or upload files using one of three possible protocols: The evaluation reviewed the state of GT4 by installing the software, otolkit available Globus Toolkit installer, from Globus Toolkit download page. Interaction Aware State Information. Grid Computing Organizations and Their Roles. To get started, simply download and install the toolkit, then turn to the example programs that come with it the Counter example presented here is just one of many GT3 grid-service examples. Online Media and Entertainment.

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Preface Untitled Document The Grid Computing discipline involves the actual networking services and connections of a potentially unlimited number of ubiquitous computing devices within a "grid. This delivery of utility-based power has become second nature to many of us, worldwide. We know that by simply walking into a room and turning on the lights, the power will be directed to the proper devices of our choice at that moment in time on demand. In this same utility fashion, Grid Computing openly seeks, and is capable of, adding an infinite number of computing devices into any grid environment, adding to the computing capability and problem resolution tasks within the operational grid environment, and at the exact time it is needed on demand.

What is the Importance of this Book? The last few years we have witnessed the emergence of Grid Computing as an innovative extension to distributed computing technology, for computing resource sharing among participants in a virtualized collection of organizations.

These resources can include all elements of computing, including: Hardware, software, applications, networking services, pervasive devices, and complex footprints of computing power.

Grid Computing is one technology enabler for some of the most innovative and powerful emerging industrial solution approaches, including the IBM On Demand strategies,1 HP utility computing,2 and Sun N1 technologies. We could find that technologies of Grid Computing are still evolving; however, the alignment with industry-wide open standards, and the commercial interests, quickly placed this technology into a forerunning state for infrastructure and technology development.

Until today, most of the work in Grid Computing has been concentrated at the academic, and standards level discussion and building custom solutions. However, the emergence of commercial utility services and the requirement for alignment with the rest of the organizational computing infrastructures hasten the development of open standards and interoperable commercial Grid solutions. This book is a detailed discussion on all aspects of Grid Computing, technology, applications, disciplines, and infrastructures.

In this book we provide full treatment to covering the evolution of Grid Computing, existing Grid infrastructure components, emerging Grid service standards, and Grid architectures. In addition, we will explore detailed discussions on many prominent Grid middleware solutions.

What You Can Expect from This Book We, the authors of this book, hope that you will find reading this book, an interesting and thought-provoking experience. In this book, we are introducing you to the basic Grid Computing principles, and to the emerging technology standards for Grid Computing. Readers will find this discussion interesting with a progressive evolution of technologies, discussed in this book in a concise, hard-hitting, and to-the-point fashion.

We must be aware that the Grid standards are complex with a number of interrelations among themselves and other emerging standards such as XML and Web services. In general, this book will explore: The basic concepts of Grid Computing: Grid Computing discipline has been evolving over the past few years as a means of immense computing power and distributed data sharing facilities. We will discuss the many core aspects of these infrastructure components, and the high-level services built upon the Grid infrastructure as networking services.

How the Grid Computing is evolving as an open standard for resource sharing: The Grid Computing discipline is evolving. The focus is now on seamless interoperability and integration among participants of the Grid for better resources sharing. This is exceptionally challenging and a number of organizations are working collectively to provide an open and extensible standard and test beds for the Grid.

The influence of emerging technology standards on Grid infrastructure: Computing is always involving some process and form of evolution. New software standards and architectures are continually evolving to meet the requirements of global industries. These architectures and standards, as the reader will soon see, have tremendous influence in the emerging open Grid Computing standards.

These important contributions will soon become the core platform for all the next generation Grid Computing technologies. The most prominent toolkits and middleware solutions that will impact the Grid adoption: These open standards and technologies are not enough; we need real middleware solutions and high-level services using these standards and technologies. The most prominent middleware technology that exists today is Globus Toolkit.

In addition, we will explore some architectural concepts of the OGSI. How this Book is Organized This book contains 15 chapters, which are organized into five parts. Chapter 1 provides a detailed but high-level introduction to the Grid Computing evolution, the applications, and the infrastructure requirements for any Grid environment. In addition, this chapter discusses Grid Computing disciplines, and the factors developers and service providers must consider during the implementation phases.

In addition, we will see a general-purpose architecture solution for the emerging Grid Computing infrastructure and a road map for Grid Computing technology initiatives. This chapter introduces us to the major plays in the Grid world. Chapter 3: "The Grid Computing Anatomy. Here we will be discussing the current and prominent technology initiatives that are affecting the recent Grid Computing revolution. Some of the prominent technology initiatives that are acting as catalysts to the evolution are Business On Demand environments, autonomic computing, service oriented architectures and semantic Grid.

In this part we will explore the technology constructs of the Service Oriented Architecture SOA that will set the stage for the new generation of Grid Computing applications.

Another notable area covered in the chapter is the Web service interoperability WS-I basic profile and the tools to assert the interoperability validations. In addition to this, we will describe the OGSA architecture and the core infrastructure components for this architecture. This discussion will align Grid Computing with the other emerging technologies. In addition, we will define some of the core base services defined by the OGSA platform.

This is based on open standards and a Global Grid Forum initiative. This discussion introduces us to the architectural layers as defined by OGSA. This chapter will then set the stage for the forthcoming discussions on OGSA. This chapter will introduce some representative sample use cases from various industry sectors to illustrate this process of requirements gathering.

This chapter enhances the OGSA architecture with more detailed layering and relationship with the other existing application and system components. In this chapter we will cover the details on this infrastructure that will define the behaviors for all Grid services created for OGSA, including state management, instance naming, life cycle management, and fault handling.

This chapter covers the core interfaces defined by the specification and their significance and usage patterns.

In addition to this, we will define the relationship between Web services and Grid services, the similarities and differences of their description mechanisms, and the significance of the Grid Web Service Description Language GWSDL. In this chapter, one will realize a tremendous amount of valuable information on the core infrastructure software.

These services emerged from the requirements gathered from the use cases collected from various industry sectors. This chapter will introduce the readers to some of these prominent base services.

In this part, we will learn about some of the prominent and emerging middleware solutions implemented using the Open Grid Service Infrastructure OGSI standard. The most prominent in this group is the Globus Toolkit. Our discussion includes the GT3 architecture, programming model, sample Grid service development, and high-level services. We will discuss this layered architecture model provided by GT3.

This software is built on Java, and enables a container model for the Grid service life cycle and instance management. In addition, this chapter explains the GT3 security mechanisms and client side architecture details.

This discussion will introduce the reader to the core service programming concepts, service data management, notification, and query processing. In addition we will discuss the service configurations, tools, and tracing options. The discussion on the client side-programming model in this chapter is also worth mentioning. Other aspects that will be discussed include security, and various message exchange models.

Our discussion will provide a detailed look into each step of this service implementation, with the tools involved and the respective codes generated. In addition, the development is done in a phased manner with added complexities in each layer.

Another most valuable discussion provided includes the traces of the SOAP messages exchanged during this service invocation. This helps the reader to understand the OGSI standards, and the GT3 in particular, and will provide better interoperability. In short, our sample will provide service data management, and notification. In addition, this chapter introduces the component model for information services.

This discussion includes provider components, service data aggregation components, and registry components. Chapter "OGSI. NET Middleware Solutions. NET environment. The reader will find a detailed discussion on the architecture and programming model for developing Grid services for. Index Download the Index file related to this title.


Grid Computing

Akilkis Unofficial job schedulers that can be used with the Globus Toolkit:. Overview Interdependence with other components. This software and its surrounding architectures are in the process of evolution, and we will therefore concentrate our discussions in this chapter to the recent very stable release of the Globus GT3 toolkit. The Globus GT3 toolkit is the most widely utilized and explored infrastructure software for grid middleware development, worldwide, among grid practitioners.


Globus Toolkit

Portable Batch System , a computer software job scheduler that allocates network resources to batch jobs. HTCondor High-Throughput Computing System , a software framework for coarse-grained distributed parallelization of computationally intensive tasks. Platform LSF , a commercial computer software job scheduler. Unofficial job schedulers that can be used with the Globus Toolkit: Sun Grid Engine , an open source batch-queuing system , supported by Sun Microsystems. Globus does not officially support SGE, but third parties offer methods to integrate it: The London e-Science Center has created a "Transfer-queue over Globus TOG " package and provides instructions on how to configure a Globus Toolkit 2 or 3 or a Globus Toolkit 4 server so that it can submit jobs for execution on a local Sun Grid Engine installation. To retain the Web-Service functionality without technology and standards now considered obsolete, a new project called Globus Crux [6] has been started, which expects to release an alpha version by the end of No releases of the IIS are planned until sometime in




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