Download or read book Restructuring Virtual Memory to Support Distributed Computing Environments written by Feng Huang and published by . This book was released on 1995 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "This dissertation considers the limitations of conventional memory and storage management approaches and proposes a coherent memory-mapped object system architecture for emerging distributed computing environments. Conventionally, main memory and secondary storage management is based on the two-level store architecture, which provides one interface to access memory segments and another to access secondary storage objects. The quality and productivity of software development is impaired by two different views of volatile data and persistent data. Operating system performance is compromised because of mandatory data copying and unnecessary user/kernel boundary crossings. This is exacerbated in microkernel architectures, in which most of the user/kernel boundary crossings become context switches. Double paging may cause resources to be used inefficiently and the double paging anomaly may occur if a data base system is implemented on top of this architecture. The work presented here seeks to tackle these problems by integrating main memory with secondary storage using memory-mapping techniques. The different views of volatile and persistent data are unified; mandatory information copying and unnecessary user/kernel boundary crossings (or context switches in microkernels) are avoided; and double paging is also eliminated. Distributed shared memory (DSM) has been proposed as an attractive abstraction for constructing distributed applications because it is easier to program than the message-passing abstraction. However, the overhead for maintaining memory coherency in DSM systems is high. Also, existing DSM systems typically provide only one coherence protocol and there exists a potential mismatch between the supplied protocol and some applications' requirements. This work explores the architectural support for a flexible coherence mechanism, through which clients can choose the most suitable protocols for their applications to avoid coherency mismatch. Also low-level coherency control is integrated with high-level concurrency control so that system-wide object coherency and synchronisation are realised without sacrificing performance. In this dissertation, an architectural framework is proposed; various design issues are discussed and the design of a flexible coherence mechanism, which accommodates multiple coherence protocols, is detailed. A prototype implementation and performance measurements are then presented; and the use of the architecture is illutstrated."

Download or read book Program Restructuring for Virtual Memory Systems in a Run time Memory Allocation Environment written by Gopa Kumar and published by . This book was released on 1980 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Program Restructuring for Virtual Memory Systems written by Jerry W. Johnson and published by . This book was released on 1975 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: The problem area addressed in this report is program restructuring, a method of reordering the relocatable sectors (subroutine and data modules) of a program in its address space to increase the locality of the program's reference behavior, thereby reducing the number of page fetches required for its execution in a virtual memory system. Theoretical upper and lower (optimum) bounds are derived for the paging performance of programs over all partitions of relocatable sectors into pages. Program restructuring techniques are developed which use intersector reference models based on sector working sets and sector stack distances. These intersector reference models identify the local reference behavior, and clustering procedures are developed that use this local reference behavior to rearrange sectors into pages such that significant improvement in paging performance is obtained. Results of measurements of paging performance obtained in the computer laboratory are discussed.

Download or read book Guide to Reliable Distributed Systems written by Amy Elser and published by Springer Science & Business Media. This book was released on 2012-01-15 with total page 733 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the key concepts, principles and implementation options for creating high-assurance cloud computing solutions. The guide starts with a broad technical overview and basic introduction to cloud computing, looking at the overall architecture of the cloud, client systems, the modern Internet and cloud computing data centers. It then delves into the core challenges of showing how reliability and fault-tolerance can be abstracted, how the resulting questions can be solved, and how the solutions can be leveraged to create a wide range of practical cloud applications. The author’s style is practical, and the guide should be readily understandable without any special background. Concrete examples are often drawn from real-world settings to illustrate key insights. Appendices show how the most important reliability models can be formalized, describe the API of the Isis2 platform, and offer more than 80 problems at varying levels of difficulty.

Download or read book Virtual Shared Memory for Distributed Architectures written by Eva Kühn and published by Nova Publishers. This book was released on 2001 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: Virtual Shared Memory for Distributed Architecture

Download or read book Architectural and Operating System Support for Virtual Memory written by Abhishek Bhattacharjee and published by Morgan & Claypool Publishers. This book was released on 2017-09-29 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides computer engineers, academic researchers, new graduate students, and seasoned practitioners an end-to-end overview of virtual memory. We begin with a recap of foundational concepts and discuss not only state-of-the-art virtual memory hardware and software support available today, but also emerging research trends in this space. The span of topics covers processor microarchitecture, memory systems, operating system design, and memory allocation. We show how efficient virtual memory implementations hinge on careful hardware and software cooperation, and we discuss new research directions aimed at addressing emerging problems in this space. Virtual memory is a classic computer science abstraction and one of the pillars of the computing revolution. It has long enabled hardware flexibility, software portability, and overall better security, to name just a few of its powerful benefits. Nearly all user-level programs today take for granted that they will have been freed from the burden of physical memory management by the hardware, the operating system, device drivers, and system libraries. However, despite its ubiquity in systems ranging from warehouse-scale datacenters to embedded Internet of Things (IoT) devices, the overheads of virtual memory are becoming a critical performance bottleneck today. Virtual memory architectures designed for individual CPUs or even individual cores are in many cases struggling to scale up and scale out to today's systems which now increasingly include exotic hardware accelerators (such as GPUs, FPGAs, or DSPs) and emerging memory technologies (such as non-volatile memory), and which run increasingly intensive workloads (such as virtualized and/or "big data" applications). As such, many of the fundamental abstractions and implementation approaches for virtual memory are being augmented, extended, or entirely rebuilt in order to ensure that virtual memory remains viable and performant in the years to come.

Download or read book Performance Improvement of Virtual Memory Systems by Restructuring and Prefetching written by Edwin James Lau and published by . This book was released on 1979 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Performance Improvement of Virtual Memory Systems written by Edwin James Lau and published by . This book was released on 1982 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reliable Distributed Systems written by Kenneth Birman and published by Springer Science & Business Media. This book was released on 2006-07-02 with total page 685 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explains fault tolerance in clear terms, with concrete examples drawn from real-world settings Highly practical focus aimed at building "mission-critical" networked applications that remain secure

Download or read book A Study of Program Restructuring in a Virtual Memory System written by Jerry Breecher and published by . This book was released on 1987 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book British Reports Translations and Theses written by British Library. Document Supply Centre and published by . This book was released on 1995 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Designing Virtual Memory Systems for Parallel and Distributed Computing written by Verônica Lagrange Moutinho dos Reis and published by . This book was released on 1996 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High throughput Image Reconstruction and Analysis written by A. Ravishankar Rao and published by Artech House. This book was released on 2009 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: This innovative volume surveys the latest image acquisition advances in serial block face techniques in scanning electron microscopy, knife-edge scanning microscopy, and 4D imaging of multi-component biological systems. The book introduces parallel processing for biological applications. You learn advanced parallelization techniques for decomposing a problem domain and mapping it onto a parallel processing architecture using the message-passing interface (MPI) and OpenMP. Case studies show how these techniques have been successfully used in simulation tasks, data mining, and graphical visualization of biological datasets. You also find coverage of methods for developing scalable biological image databases and for facilitating greater interactive visualization of large image sets.

Download or read book Proceedings written by International Workshop on Object-Orientation in Operating Systems 4, 1995, Lund, Sweden and published by . This book was released on 1995 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book British National Bibliography for Report Literature written by and published by . This book was released on 1998 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Application of Restructuring Techniques to the Optimization of Program Behavior in Virtual Memory Systems written by Jehan Franc̦ois Pâris and published by . This book was released on 1981 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High Performance Scientific Computing written by Michael W. Berry and published by Springer Science & Business Media. This book was released on 2012-01-18 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the state of the art in parallel numerical algorithms, applications, architectures, and system software. The book examines various solutions for issues of concurrency, scale, energy efficiency, and programmability, which are discussed in the context of a diverse range of applications. Features: includes contributions from an international selection of world-class authorities; examines parallel algorithm-architecture interaction through issues of computational capacity-based codesign and automatic restructuring of programs using compilation techniques; reviews emerging applications of numerical methods in information retrieval and data mining; discusses the latest issues in dense and sparse matrix computations for modern high-performance systems, multicores, manycores and GPUs, and several perspectives on the Spike family of algorithms for solving linear systems; presents outstanding challenges and developing technologies, and puts these in their historical context.