Download or read book Performance Evaluation Prediction and Visualization of Parallel Systems written by Xingfu Wu and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Performance Evaluation, Prediction and Visualization in Parallel Systems presents a comprehensive and systematic discussion of theoretics, methods, techniques and tools for performance evaluation, prediction and visualization of parallel systems. Chapter 1 gives a short overview of performance degradation of parallel systems, and presents a general discussion on the importance of performance evaluation, prediction and visualization of parallel systems. Chapter 2 analyzes and defines several kinds of serial and parallel runtime, points out some of the weaknesses of parallel speedup metrics, and discusses how to improve and generalize them. Chapter 3 describes formal definitions of scalability, addresses the basic metrics affecting the scalability of parallel systems, discusses scalability of parallel systems from three aspects: parallel architecture, parallel algorithm and parallel algorithm-architecture combinations, and analyzes the relations of scalability and speedup. Chapter 4 discusses the methodology of performance measurement, describes the benchmark- oriented performance test and analysis and how to measure speedup and scalability in practice. Chapter 5 analyzes the difficulties in performance prediction, discusses application-oriented and architecture-oriented performance prediction and how to predict speedup and scalability in practice. Chapter 6 discusses performance visualization techniques and tools for parallel systems from three stages: performance data collection, performance data filtering and performance data visualization, and classifies the existing performance visualization tools. Chapter 7 describes parallel compiling-based, search-based and knowledge-based performance debugging, which assists programmers to optimize the strategy or algorithm in their parallel programs, and presents visual programming-based performance debugging to help programmers identify the location and cause of the performance problem. It also provides concrete suggestions on how to modify their parallel program to improve the performance. Chapter 8 gives an overview of current interconnection networks for parallel systems, analyzes the scalability of interconnection networks, and discusses how to measure and improve network performances. Performance Evaluation, Prediction and Visualization in Parallel Systems serves as an excellent reference for researchers, and may be used as a text for advanced courses on the topic.

Download or read book Performance Evaluation of Non Uniform Memory Access and Cache Only Memory Architecture Distributed Shared memory Multiprocessors written by Michael Warren Holzrichter and published by . This book was released on 1995 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scalable Shared Memory Multiprocessors written by Michel Dubois and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: The workshop on Scalable Shared Memory Multiprocessors took place on May 26 and 27 1990 at the Stouffer Madison Hotel in Seattle, Washington as a prelude to the 1990 International Symposium on Computer Architecture. About 100 participants listened for two days to the presentations of 22 invited The motivation for this workshop was to speakers, from academia and industry. promote the free exchange of ideas among researchers working on shared-memory multiprocessor architectures. There was ample opportunity to argue with speakers, and certainly participants did not refrain a bit from doing so. Clearly, the problem of scalability in shared-memory multiprocessors is still a wide-open question. We were even unable to agree on a definition of "scalability". Authors had more than six months to prepare their manuscript, and therefore the papers included in this proceedings are refinements of the speakers' presentations, based on the criticisms received at the workshop. As a result, 17 authors contributed to these proceedings. We wish to thank them for their diligence and care. The contributions in these proceedings can be partitioned into four categories 1. Access Order and Synchronization 2. Performance 3. Cache Protocols and Architectures 4. Distributed Shared Memory Particular topics on which new ideas and results are presented in these proceedings include: efficient schemes for combining networks, formal specification of shared memory models, correctness of trace-driven simulations,synchronization, various coherence protocols, .

Download or read book The Cache coherence Problem in Shared memory Multiprocessors written by Milo Tomašević and published by Institute of Electrical & Electronics Engineers(IEEE). This book was released on 1993 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: A tutorial on the nature of the cache coherence problem and the wide variety of proposed hardware solutions currently available. A number of the most important papers in this field are included within seven sections: introductory issues; memory reference characteristics of parallel programs; directo

Download or read book Multiprocessor Performance Measurement and Evaluation written by Laxmi N. Bhuyan and published by . This book was released on 1995 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Flexible Use of Memory for Replication migration in Cache coherent DSM Multiprocessors written by Vijayaraghavan Soundararajan and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Shared-memory multiprocessors are being used increasingly as computer servers. These systems enable efficient usage of computing resources through the aggregation and tight coupling of CPUs, memory, and I/O. One popular design for such machines is a bus-based architecture. However, as processors get faster, the shared bus becomes a bandwidth bottleneck. CC-NUMA (Cache-Coherent with Non-Uniform Memory Access time) machines remove this architectural limitation and provide a scalable shared-memory architecture. One significant characteristic of the CC-NUMA architecture is that the latency to access remote data is considerably larger than the latency to access local data. On such machines, good data locality can reduce memory stall time and is therefore critical for high performance. In this thesis we study the various options available to system designers to transparently decrease the fraction of data misses serviced remotely. This work is done in the context of the Stanford FLASH multiprocessor. We utilize the programmability of the FLASH memory controller to explore a number of techniques for improving data locality: base cache-coherence (CC); a Remote Access Cache (RAC), in which a portion of local memory is used to cache remotely-allocated data at cache-line granularity; a Cache-Only Memory Architecture (COMA-F), in which all of local memory is used as a cache under hardware control; and OS-assisted page migration/replication (MigRep), in which the operating system migrates or replicates pages according to observed cache miss patterns. We then propose a novel hybrid scheme, MIGRAC, that combines the benefits of RAC and MigRep. We evaluate complete implementations of these schemes on the same platform using compute-server workloads (including OS effects), thereby providing a more consistent and detailed evaluation than has been done before. We find that a simple RAC can improve performance significantly over CC (up to 64% gains). COMA-F improves locality but its additional complexity limits its gains versus CC (only 14% improvement). MigRep performs well (up to 33% gains) but does not handle fine-grain sharing as effectively as RAC or COMA-F. Finally, our MIGRAC approach performs well relative to RAC (up to 57% faster) and MigRep (up to 24% faster) and is robust."--Abstract.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the 1994 International Conference on Parallel Processing August 15 19 1994 Architecture written by Dharma Prakash Agrawal and published by . This book was released on 1994 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Cache Coherence Problem in Shared Memory Multiprocessors written by Igor Tartalja and published by Wiley-IEEE Computer Society Press. This book was released on 1996-02-13 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book illustrates state-of-the-art software solutions for cache coherence maintenance in shared-memory multiprocessors. It begins with a brief overview of the cache coherence problem and introduces software solutions to the problem. The text defines and details static and dynamic software schemes, techniques for modeling performance evaluation mechanisms, and performance evaluation studies.

Download or read book Cache and Interconnect Architectures in Multiprocessors written by Michel Dubois and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cache And Interconnect Architectures In Multiprocessors Eilat, Israel May 25-261989 Michel Dubois UniversityofSouthernCalifornia Shreekant S. Thakkar SequentComputerSystems The aim of the workshop was to bring together researchers working on cache coherence protocols for shared-memory multiprocessors with various interconnect architectures. Shared-memory multiprocessors have become viable systems for many applications. Bus based shared-memory systems (Eg. Sequent's Symmetry, Encore's Multimax) are currently limited to 32 processors. The fIrst goal of the workshop was to learn about the performance ofapplications on current cache-based systems. The second goal was to learn about new network architectures and protocols for future scalable systems. These protocols and interconnects would allow shared-memory architectures to scale beyond current imitations. The workshop had 20 speakers who talked about their current research. The discussions were lively and cordial enough to keep the participants away from the wonderful sand and sun for two days. The participants got to know each other well and were able to share their thoughts in an informal manner. The workshop was organized into several sessions. The summary of each session is described below. This book presents revisions of some of the papers presented at the workshop.

Download or read book Performance Evaluation and Low Power Design of Network Processors written by Yan Luo and published by . This book was released on 2005 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Conference on Experimental Research in Computer Systems written by Lawrence Snyder and published by . This book was released on 1997 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Performance Evaluation of Shared Memory Multiprocessors with On chip Caches written by James Jui-Lin Yu and published by . This book was released on 1991 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Fifth IEEE Symposium on Parallel and Distributed Processing written by and published by . This book was released on 1993 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the 5th IEEE Symposium on Parallel and Distributed Processing held in Dallas, Texas, in December 1993. Among the topics: wormhold routing, storage management, multithreading, and mesh computations. No index. Annotation copyright by Book News, Inc., Portland, OR.

Download or read book Annual ACM Symposium on Parallel Algorithms and Architectures written by and published by . This book was released on 2001 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Performance Evaluation of Cache Hierarchy in Shared Memory Multiprocessors Using Trace Driven Simulation written by Senthil Krishnamoorthy and published by . This book was released on 1996 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluating Memory System Performance of a Large Scale NUMA Multiprocessor written by Karim Harzallah and published by . This book was released on 1993 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "The effectiveness of large scale computing depends to a great extent on the performance of the memory system. As shared memory multiprocessors grow in size, their memory hierarchy deepens, resulting in a design with non-uniform latencies. In this paper, we explore the implications of multi-valued memory latencies. In particular, we study the effect of a non-uniform traffic distribution on a hierarchical large scale NUMA multiprocessor named Hector. Memory analysis is of interest because memory is a frequent source of poor performance in large scale multiprocessors. We have developed an analytical model that includes the effects of increased contention for system resources, and the impact of the arbitration algorithm on the network traffic. Our analysis has been validated with a detailed simulator. Also, we have examined two techniques for reducing memory latency. We assess the potential performance gains from replication of data and investigate the improvement in memory utilization by allowing memory request buffering. Furthermore, we studied the sensitivity of the memory performance to changes in background traffic. We found that inter-station traffic has a significant performance effect."