Download or read book The Design and Implementation of a Coherent Distributed Shared Memory written by Gerald A. Jelinek and published by . This book was released on 1990 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distributed Shared Memory written by Jelica Protic and published by John Wiley & Sons. This book was released on 1997-08-10 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: The papers present in this text survey both distributed shared memory (DSM) efforts and commercial DSM systems. The book discusses relevant issues that make the concept of DSM one of the most attractive approaches for building large-scale, high-performance multiprocessor systems. The authors provide a general introduction to the DSM field as well as a broad survey of the basic DSM concepts, mechanisms, design issues, and systems. The book concentrates on basic DSM algorithms, their enhancements, and their performance evaluation. In addition, it details implementations that employ DSM solutions at the software and the hardware level. This guide is a research and development reference that provides state-of-the art information that will be useful to architects, designers, and programmers of DSM systems.
Download or read book Mirage written by Brett Dwayne Fleisch and published by . This book was released on 1989 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "Shared memory is an effective and efficient paradigm for interprocess communication. We are concerned with software that makes use of shared memory in a single site system and its extension to a multimachine environment. Here we describe the design of a distributed shared memory (DSM) system called Mirage developed at UCLA. Mirage provides a form of network transparency to make network boundaries invisible for shared memory and is upward compatible with an existing interface to shared memory. We present the rationale behind our design decisions and important details of the implementation. Mirage's basic performance is examined by component timings, a worst case application, and a "representative" application. Our experience is that the tuning parameter in our design can improve application throughput [i.e. throughout] for some instances of page contention. In other cases, we find the effect of thrashing on overall system performance can be ameliorated using our tuning parameter."
Download or read book The Design and Implementation of an Object based Distributed Shared Memory System written by Arve Hjønnevåg and published by . This book was released on 1997 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Design and Implementation of a Compliant Distributed Shared Shared Memory System written by Peng-Tso Chang and published by . This book was released on 1999 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Design and Implementation of Distributed Shared Memory Based on Scope Consistency written by Wenlian Yang and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Distributed Shared Memory (DSM) is one of the main approaches to implement distributed computing. The purpose of this project is to design and implement a prototype DSM that runs on popular TCP/IP networked Window PCs without special compliers and/or linkers. Our DSM uses lock based scope consistency (ScC), and supports central model, multiple server model and fully distributed model. We use object-oriented method to encapsulate these models within one framework. We provide C++ APIs and a DSM engine for C++ programmers to use DSM functions. The project is developed using C++ and Winsock APIs under Windows NT platform.
Download or read book Design and Implementation of Page based Distributed Shared Memory in Distributed Database Systems written by Padmanabhan Raman and published by . This book was released on 1999 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project is the simulation of page-based distributed shared memory originally called IVY. It consists of a collection of clients or workstations connected to a server, which contains a shared memory segment within which the distributed database is located.
Download or read book Consistent Distributed Storage written by Vincent Gramoli and published by Springer Nature. This book was released on 2022-05-31 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing a shared memory abstraction in distributed systems is a powerful tool that can simplify the design and implementation of software systems for networked platforms. This enables the system designers to work with abstract readable and writable objects without the need to deal with the complexity and dynamism of the underlying platform. The key property of shared memory implementations is the consistency guarantee that it provides under concurrent access to the shared objects. The most intuitive memory consistency model is atomicity because of its equivalence with a memory system where accesses occur serially, one at a time. Emulations of shared atomic memory in distributed systems is an active area of research and development. The problem proves to be challenging, and especially so in distributed message passing settings with unreliable components, as is often the case in networked systems. We present several approaches to implementing shared memory services with the help of replication on top of message-passing distributed platforms subject to a variety of perturbations in the computing medium.
Download or read book Design and Implementation of Distributed Shared Memory Segments on Networked Multiprocessor Systems written by Adarsh Holavanahalli and published by . This book was released on 1993 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distributed Shared Memory for New Generation Networks written by Leonidas I. Kontothanassis and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "Shared memory is widely believed to provide an easier programming model than message passing for expressing parallel algorithms. Distributed Shared Memory (DSM) systems provide the illusion of shared memory on top of standard message passing hardware at very low implementation cost, but provide acceptable performance on only a limited class of applications. In this paper we study the main sources of overhead found in software-coherent, distributed shared-memory systems and argue that recent revolutionary changes in network technology now allow us to design protocols that minimize such overheads and that approach the performance of full hardware coherence. Specifically, we claim that memory-mapped network interfaces that support a global physical address space can greatly improve the performance of DSM systems. To support this claim we study a variety of coherence protocols that can take advantage of the global physical address space and compare their performance with the best known protocol for pure message passing hardware. For the programs in our application suite, protocols taking advantage of the new hardware features improve performance by at least 50% and by as much as an order of magnitude."
Download or read book Efficient and Scalable Distributed Shared Memory System written by Byung-Hyun Yu and published by LAP Lambert Academic Publishing. This book was released on 2012-02 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents the design and implementation of our novel hybrid software DSM system. We call our system hybrid home-based EAC (HHEAC) since the system implements our novel exclusive access consistency model (EAC) based on the hybrid protocol of the homeless and home-based protocols. HHEAC guarantees only that shared variables inside a critical section are up to date before the accesses. Other shared variables outside a critical section are guaranteed to be up to date after the next barrier synchronisation. Our home-based DSM implementation is different from the previous implementations in that a home node does not receive any diffs from non-home nodes until the next barrier synchronisation. It is also different in that during a lock synchronisation required diffs are prefetched before the critical section, which reduces not only data traffic but also page faults inside the critical section. We also present a diff integration technique that can further unnecessary data traffic during lock synchronisation. This technique is especially effective in reducing data traffic for migratory applications.
Download or read book Distributed Shared Memory for New Generation Networks written by Leonidas I. Kontothanassis and published by . This book was released on 1995 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "Shared memory is widely believed to provide an easier programming model than message passing for expressing parallel algorithms. Distributed Shared Memory (DSM) systems provide the illusion of shared memory on top of standard message passing hardware at very low implementation cost, but provide acceptable performance on only a limited class of applications. In this paper we study the main sources of overhead found in software-coherent, distributed shared-memory systems and argue that recent revolutionary changes in network technology now allow us to design protocols that minimize such overheads and that approach the performance of full hardware coherence. Specifically, we claim that memory-mapped network interfaces that support a global physical address space can greatly improve the performance of DSM systems. To support this claim we study a variety of coherence protocols that can take advantage of the global physical address space and compare their performance with the best known protocol for pure message passing hardware. For the programs in our application suite, protocols taking advantage of the new hardware features improve performance by at least 50% and by as much as an order of magnitude."
Download or read book Design and Implementation of a High performance Distributed Shared Memory Scheme written by 賴怡吉 and published by . This book was released on 2000 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design and Implementation of an Aggressive Consistency Distributed Shared Memory System written by 張勁學 and published by . This book was released on 1997 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Primer on Memory Consistency and Cache Coherence written by Vijay Nagarajan and published by Morgan & Claypool Publishers. This book was released on 2020-02-04 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many modern computer systems, including homogeneous and heterogeneous architectures, support shared memory in hardware. In a shared memory system, each of the processor cores may read and write to a single shared address space. For a shared memory machine, the memory consistency model defines the architecturally visible behavior of its memory system. Consistency definitions provide rules about loads and stores (or memory reads and writes) and how they act upon memory. As part of supporting a memory consistency model, many machines also provide cache coherence protocols that ensure that multiple cached copies of data are kept up-to-date. The goal of this primer is to provide readers with a basic understanding of consistency and coherence. This understanding includes both the issues that must be solved as well as a variety of solutions. We present both high-level concepts as well as specific, concrete examples from real-world systems. This second edition reflects a decade of advancements since the first edition and includes, among other more modest changes, two new chapters: one on consistency and coherence for non-CPU accelerators (with a focus on GPUs) and one that points to formal work and tools on consistency and coherence.
Download or read book Optimizing Communication in HPF Programs for Fine grain Distributed Shared Memory written by Satish Chandra and published by . This book was released on 1997 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "The coherence mechanisms underlying most shared-memory systems work equally well -- or poorly -- for regular and irregular programs. In both cases, data accesses go through a general-purpose protocol, which provides the only communication primitive available to software. However, in parts of many codes, compile-time information about data accesses could be used to transfer data more efficiently than a standard coherence protocol, if the underlying system provided suitable primitives. This paper demonstrates that for HPF programs running on fine- grain distributed shared memory [32], cooperation between the compiler and the coherence protocol can produce significant performance gains (upto [sic] 26%), while retaining the versatility and portability of coherent shared memory. This paper also describes the design choices in our implementation and reports detailed experimental results."
Download or read book Munin written by John K. Bennett and published by . This book was released on 1990 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: These type-specific mechanisms are part of a runtime system that accepts hints from the user or the compiler to determine the coherence mechanism to be used for each object. This paper focuses on the design and use of Munin's memory coherence mechanisms, and compares our approach to previous work in this area."
