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Reducing The Communication Overhead Of Dynamic Applications On Shared Memory Multiprocessors
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Book Synopsis Reducing the Communication Overhead of Dynamic Applications on Shared Memory Multiprocessors by : Anand Sivasubramaniam
Download or read book Reducing the Communication Overhead of Dynamic Applications on Shared Memory Multiprocessors written by Anand Sivasubramaniam and published by . This book was released on 1996 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "Shared memory machines offer the convenience of a shared address space. This makes them particularly appealing for applications with dynamic communication behavior since the mechanisms for data transfer between processors is hidden from the programmer. But the scalability of these machines is often limited by the latencies incurred in accessing locations in remote memories. Caches alleviate this problem by exploiting the temporal and spatial locality in an application. However, the induced traffic for maintaining coherence can have a large impact on limiting performance. Invalidation-based protocols for coherence maintainance are conservative and always resort to receiver-initiated communication. Thus the receiver may have to experience the entire latency of the data transfer even though the data item may have been available much earlier. Update-based schemes, though sender-initiated can incur high write overheads by sending redundant updates to processors that may not need them. The goal of this research is to reduce the read and write latencies of applications with dyanmic communication behavior by employing intelligent sender-initiated data transfer mechanisms. In the process, we would like to keep our demands from the programmer, the compiler, and the hardware as low as possible. Towards this goal, we present a set of write primitives that lower the communication overhead for shared memory accesses governed by locks. We demonstrate the performance benefits of these primitives using a database application drawn from the Geographical Information Systems (GIS) domain. We explore the competitive update mechanism for the remaining shared memory accesses. Using a set of applications, we examine the amount of history that we need to maintain for an effective competitive update scheme. We also show how this effective scheme can be implemented in software on emerging shared memory architectures with little hardware support."
Book Synopsis An Analysis of the Interactions of Overhead-reducing Techniques for Shared-memory Multiprocessors by : University of Wisconsin--Madison. Computer Sciences Dept
Download or read book An Analysis of the Interactions of Overhead-reducing Techniques for Shared-memory Multiprocessors written by University of Wisconsin--Madison. Computer Sciences Dept and published by . This book was released on 1995 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "The fine-grain nature of shared-memory multiprocessor communication introduces overheads that can be substantial. Using the Scalable Coherent Interface (SCI) as a base hardware platform and the SPLASH benchmark suite for applications, we analyze three techniques to reduce this overhead: (i) efficient synchronization primitives, and in particular a hardware primitive called QOLB; (ii) weakened memory ordering constraints; and (iii) optimization of the cache-coherence protocol for two nodes sharing data. We perform simulations both for current technology and technology that we anticipate will be available five years hence. We find that QOLB (of which this study performs the first detailed simulations) shows a large and consistent improvement, much larger than that predicted by Mellor-Crummey and Scott [19]. The relaxation of memory ordering constraints also provides a consistent performance improvement. In accordance with prior results, we show that a more aggressive memory model produces more substantial performance improvements. The optimization for two-node sharing shows mixed results, correlating unsurprisingly with the presence of that sharing pattern in an application. Our most important results are (i) that the overheads eliminated with these optimizations are largely orthogonal -- the performance gains from supporting multiple optimizations concurrently are for the most part additive -- and (ii) that technological improvements increase both these overheads and the success of the optimizations at reducing them."
Book Synopsis Third International Symposium on High-Performance Computer Architecture by :
Download or read book Third International Symposium on High-Performance Computer Architecture written by and published by Institute of Electrical & Electronics Engineers(IEEE). This book was released on 1997 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reducing the Overhead of Sharing on Shared Memory Multiprocessors by : Maged M. Michael
Download or read book Reducing the Overhead of Sharing on Shared Memory Multiprocessors written by Maged M. Michael and published by . This book was released on 1997 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scalable Shared Memory Multiprocessors by : Michel Dubois
Download or read book Scalable Shared Memory Multiprocessors written by Michel Dubois and published by Springer Science & Business Media. This book was released on 1992 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mathematics of Computing -- Parallelism.
Book Synopsis Dynamic Scheduling of Parallel Applications on Shared-memory Multiprocessors by : Xavier Martorell Bofill
Download or read book Dynamic Scheduling of Parallel Applications on Shared-memory Multiprocessors written by Xavier Martorell Bofill and published by . This book was released on 2010 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Shared Memory Multiprocessing by : Norihisa Suzuki
Download or read book Shared Memory Multiprocessing written by Norihisa Suzuki and published by MIT Press. This book was released on 1992 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shared memory multiprocessors are becoming the dominant architecture for small-scale parallel computation. This book is the first to provide a coherent review of current research in shared memory multiprocessing in the United States and Japan. It focuses particularly on scalable architecture that will be able to support hundreds of microprocessors as well as on efficient and economical ways of connecting these fast microprocessors. The 20 contributions are divided into sections covering the experience to date with multiprocessors, cache coherency, software systems, and examples of scalable shared memory multiprocessors.
Book Synopsis High Performance Computing and Communications by : Michael Gerndt
Download or read book High Performance Computing and Communications written by Michael Gerndt and published by Springer Science & Business Media. This book was released on 2006-09-13 with total page 960 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the Second International Conference on High Performance Computing and Communications, HPCC 2006. The book presents 95 revised full papers, addressing all current issues of parallel and distributed systems and high performance computing and communication. Coverage includes networking protocols, routing, and algorithms, languages and compilers for HPC, parallel and distributed architectures and algorithms, wireless, mobile and pervasive computing, Web services, peer-to-peer computing, and more.
Book Synopsis Dynamic Scheduling of Parallel Applications on Shared-memory Multiprocessors by : Xavier Martorell Bofill
Download or read book Dynamic Scheduling of Parallel Applications on Shared-memory Multiprocessors written by Xavier Martorell Bofill and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Laurence Tianruo Yang Publisher :Springer Science & Business Media ISBN 13 :1461552052 Total Pages :234 pages Book Rating :4.4/5 (615 download)
Book Synopsis Parallel Numerical Computation with Applications by : Laurence Tianruo Yang
Download or read book Parallel Numerical Computation with Applications written by Laurence Tianruo Yang and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: Parallel Numerical Computations with Applications contains selected edited papers presented at the 1998 Frontiers of Parallel Numerical Computations and Applications Workshop, along with invited papers from leading researchers around the world. These papers cover a broad spectrum of topics on parallel numerical computation with applications; such as advanced parallel numerical and computational optimization methods, novel parallel computing techniques, numerical fluid mechanics, and other applications related to material sciences, signal and image processing, semiconductor technology, and electronic circuits and systems design. This state-of-the-art volume will be an up-to-date resource for researchers in the areas of parallel and distributed computing.
Download or read book FGCS '92 written by and published by IOS Press. This book was released on 1992 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Adaptive Parallel Programs by : Steven Lucco
Download or read book Adaptive Parallel Programs written by Steven Lucco and published by . This book was released on 1994 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "This dissertation describes a methodology for compiling and executing irregular parallel programs. Such programs implement parallel operations whose size and work distribution depend on input data. Irregular operations pose a particularly difficult scheduling problem because the information necessary to execute these operations efficiently can not be known at the time the program is compiled. This dissertation describes a set of four run-time scheduling techniques that can execute many irregular parallel programs efficiently. A common thread among these techniques is that they gather information about the work distribution of a program during its execution and use this information to adjust the allocation of processing resources. The most important contribution of this dissertation is its identification and exploitation of work distribution locality properties. Previous work on irregular parallel program scheduling unearthed the following dilemma: compilers can not predict work distribution accurately enough to schedule programs efficiently; however, runtime load balancing solutions, while more accurate, incur prohibitive overhead. This dissertation shows how to avoid this dilemma whenever irregular loops within parallel programs have work distribution locality, that is, when a loop retains a similar distribution of individual iteration execution times from one execution instance to the next. An execution instance is simply an execution of the entire loop, possibly in parallel. Where this common case arises, we exploit it through work distribution caching: guessing the work distribution of a loop execution instance based on earlier measurements. We also exploit work distribution locality through deferred load balancing: reducing the communication overhead and thrashing potential of load balancing algorithms by applying them across multiple execution instances of a loop. We evaluated these scheduling techniques using a set of application programs, including climate modeling, circuit simulation, and x-ray tomography, that contain irregular parallel operations. The results demonstrate that, for these applications, the techniques described in this dissertation achieve near-optimal efficiency on large numbers of processors. In addition, they perform significantly better, on these problems, than any previously proposed static or dynamic scheduling method."
Book Synopsis Control and Dynamic Systems V42: Analysis and Control System Techniques for Electric Power Systems Part 2 by : C.T. Leonides
Download or read book Control and Dynamic Systems V42: Analysis and Control System Techniques for Electric Power Systems Part 2 written by C.T. Leonides and published by Academic Press. This book was released on 2012-12-02 with total page 501 pages. Available in PDF, EPUB and Kindle. Book excerpt: Control and Dynamic Systems: Advances in Theory and Applications, Volume 42: Analysis and Control System Techniques for Electric Power Systems, Part 2 of 4 covers the research studies on the significant advances in areas including economic operation of power systems and voltage and power control techniques. This book is composed of eight chapters and begins with a survey of the application of parallel processing to power system analysis as motivated by the requirement for faster computation. The next chapters deal with the issues of power system protection from a system point of view, the voltage stability phenomenon, and an overview of the techniques used in the reliability evaluation of large electric power systems. These chapters also look into the reliability assessment of bulk power systems, which are the composite of generation and high-voltage transmission, often called composite systems. These topics are followed by investigations of the potential of integer quadratic optimization to improve efficiency in a radial electric distribution system through the coordination of switched capacitors and regulators. Other chapters consider the issues of the optimal operation of a power system that are substantially complicated as a result of the large system scale nature of these issues. The final chapters explore the techniques for achieving requisite speed improvements that are essential to electric power systems and the problems on effective methods in hydro optimization. This book will be of value to electrical engineers, designers, and researchers.
Book Synopsis Euro-Par 2006 Parallel Processing by : Wolfgang E. Nagel
Download or read book Euro-Par 2006 Parallel Processing written by Wolfgang E. Nagel and published by Springer Science & Business Media. This book was released on 2006-08-24 with total page 1228 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 12th International Conference on Parallel Computing, Euro-Par 2006. The book presents 110 carefully reviewed, revised papers. Topics include support tools and environments; performance prediction and evaluation; scheduling and load balancing; compilers for high performance; parallel and distributed databases, data mining and knowledge discovery; grid and cluster computing: models, middleware and architectures; parallel computer architecure and instruction-level parallelism; distributed systems and algorithms, and more.
Book Synopsis A Synchronization Mechanism for Dynamic Request Combining in Shared Memory Multiprocessors and Its Applications by : Der-Chung Cheng
Download or read book A Synchronization Mechanism for Dynamic Request Combining in Shared Memory Multiprocessors and Its Applications written by Der-Chung Cheng and published by . This book was released on 1991 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hiding Memory Latency Using Dynamic Scheduling in Shared-memory Multiprocessors by : Stanford University. Computer Systems Laboratory
Download or read book Hiding Memory Latency Using Dynamic Scheduling in Shared-memory Multiprocessors written by Stanford University. Computer Systems Laboratory and published by . This book was released on 1993 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper explores the use of dynamically scheduled processors to exploit the overlap allowed by relaxed models for hiding the latency of reads. Our results are based on detailed simulation studies of several parallel applications. The results show that a substantial fraction of the read latency can be hidden using this technique. However, the major improvements in performance are achieved only at large instruction window sizes."
Book Synopsis Scalable Shared-Memory Multiprocessing by : Daniel E. Lenoski
Download or read book Scalable Shared-Memory Multiprocessing written by Daniel E. Lenoski and published by Morgan Kaufmann. This book was released on 1995-06 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beginning with a discussion of the fundamentals of scalable multiprocessors and the characteristics of large-scale parallel programs, the book then presents an in-depth presentation of the hardware design issues for this class of machine, and a survey of existing and proposed scalable shared-memory systems.
