Download or read book Scalable Caching Techniques for a Weakly Coherent Memory written by K. Zamanifar and published by . This book was released on 1995 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "There is a growing acceptance that general purpose parallel computers need to be based on a scalable shared memory computational model, with the ability to exploit data locality for good performance. Today, this is commonly achieved by mapping the model onto a distributed memory computer with a scalable interconnect (supporting linear increases in bisection bandwidth). Example machines are the Cray T3D, IBM SP2 and Intel Paragon, which can scale in performance to 100's or 1000's of processors. This results in a two-level memory hierarchy, in which data is either local or shared across the machine. The next few years will see a trend in the move towards cache coherent multiprocessors, using the techniques employed by machines such as the KSR (cache-only memory) and the DASH (distributed directories). An example is the forthcoming Silicon Graphics cache coherent multiprocessor. This will simplify the programming model by presenting a single level memory hierarchy, consisting of a system-wide shared address space. Multiple copies of a shared variable are then automatically maintained in a coherent state by the machine. This paper describes a highly scalable caching technique, which is targeted at a specific form of shared memory model, called the WPRAM. Shared data is weakly coherent, in that a processor wishing to read newly written shared data must explicitly synchronise in some way with the writer of that data. The example provided supports coherency for barrier synchronisation operations, but can be extended to other forms. An example of the use of this method is shown through an implementation of the simplex method for linear programming. Results are based on a simulation of a scalable distributed memory machine. An analytical model is used to describe the performance of the algorithm and verify the simulation results."

Download or read book A Combination of Scalable Caching Methods for a Weakly Coherent Shared Memory Model written by K. Zamanifar and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scalable Cache Coherency Schemes for Weakly Coherent Memory Models written by Kamran Zamanifar and published by . This book was released on 1996 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Abstract Machine Models for Parallel and Distributed Computing written by M. Kara and published by IOS Press. This book was released on 1996 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract Machine Models have played a profound though frequently unacknowledged role in the development of modern computing systems. They provide a precise definition of vital concepts, allow system complexity to be managed by providing appropriate views of the activity under consideration, enable reasoning about the correctness and quantitative performance of proposed problem solutions, and encourage communication through a common medium of expression. Abstract Models in Parallel and Distributed computing have a particularly important role in the development of contemporary systems, encapsulating and controlling an inherently high degree of complexity. The Parallel and Distributed computing communities have traditionally considered themselves to be separate. However, there is a significant contemporary interest in both of these communities in a common hardware model; a set of workstation-class machines connected by a high-performance network. The traditional Parallel/Distributed distinction therefore appears under threat.

Download or read book Cache Coherence for Scalable Shared Memory Multiprocessors written by Manu Thapar and published by . This book was released on 1991 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Primer on Memory Consistency and Cache Coherence written by Daniel J. Sorin and published by Morgan & Claypool Publishers. This book was released on 2011 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many modern computer systems and most multicore chips (chip multiprocessors) 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 highlevel concepts as well as specific, concrete examples from real-world systems. Table of Contents: Preface / Introduction to Consistency and Coherence / Coherence Basics / Memory Consistency Motivation and Sequential Consistency / Total Store Order and the x86 Memory Model / Relaxed Memory Consistency / Coherence Protocols / Snooping Coherence Protocols / Directory Coherence Protocols / Advanced Topics in Coherence / Author Biographies

Download or read book Memory Consistency Directed Cache Coherence Protocols for Scalable Multiprocessors written by Marco Iskender Elver and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design and Analysis of Update Based Cache Coherence Protocols for Scalable Shared Memory Multiprocessors written by David Brian Glasco and published by . This book was released on 1994 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Overall, this work demonstrates that update-based protocols can be used not only as a coherence mechanism, but also as a latency reducing and tolerating technique to improve the performance of a set of fine-grain scientific applications. But as with other latency reducing techniques, such as data prefetch, the technique must be used with an understanding of its consequences.

Download or read book Scalable Directories for Cache coherent Shared memory Multiprocessors written by Wolf-Dietrich Weber and published by . This book was released on 1993 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Scalable New Cache Coherence Protocol for Hierarchical Distributed Shared Memory written by Phanindra K. Mannava and published by . This book was released on 1994 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Performance and Scalability of Distributed Shared Memory Cache Coherence Protocols written by Mark Andrew Heinrich and published by . This book was released on 1998 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Primer on Memory Consistency and Cache Coherence written by Daniel Sorin and published by Springer Nature. This book was released on 2011-05-10 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many modern computer systems and most multicore chips (chip multiprocessors) 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 highlevel concepts as well as specific, concrete examples from real-world systems. Table of Contents: Preface / Introduction to Consistency and Coherence / Coherence Basics / Memory Consistency Motivation and Sequential Consistency / Total Store Order and the x86 Memory Model / Relaxed Memory Consistency / Coherence Protocols / Snooping Coherence Protocols / Directory Coherence Protocols / Advanced Topics in Coherence / Author Biographies

Download or read book A Cache Coherence Mechanism for Scalable Shared memory Multiprocessors written by University of Wisconsin--Madison. Computer Sciences Dept and published by . This book was released on 1991 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reducing Memory and Traffic Requirements for Scalable Directory based Cache Coherence Schemes written by Anoop Gupta and published by . This book was released on 1990 with total page 12 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 Formal Techniques for Distributed Objects Components and Systems written by Elvira Albert and published by Springer. This book was released on 2016-05-23 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the proceedings of the 36th IFIP WG 6.1International Conference on Formal Techniques for Distributed Objects,Components, and Systems, FORTE 2016, held in Heraklion, Crete, Greece, in June2016, as part of the 11th International Federated Conference onDistributed Computing Techniques, DisCoTec 2016. The 18 revised full papers presented were carefully reviewed andselected from 44 submissions. The papers present a wide range of topicson distributed computing models and formal specification, testing, andverification methods.

Download or read book Value Communication Techniques to Improve Scalability of Transactional Memory Systems written by Salil Mohan Pant and published by . This book was released on 2010 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: cache coherence, value prediction, transactional memory, distritbuted systems, memory systems, parallel programming.