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Analysis Of Shared Memory Misses And Reference Patterns
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Book Synopsis Analysis of Shared Memory Misses and Reference Patterns by : Jeffrey B. Rothman
Download or read book Analysis of Shared Memory Misses and Reference Patterns written by Jeffrey B. Rothman and published by . This book was released on 1999 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "Shared bus computer systems permit the relatively simple and efficient implementation of cache consistency algorithms, but the shared bus is a bottleneck which limits performance. False sharing can be an important source of unnecessary traffic for invalidation-based protocols, elimination of which can provide significant performance improvements. For many multiprocessor workloads, however, most misses are true sharing and cost start misses. Regardless of the cause of cache misses, the largest fraction of bus traffic are words transferred between caches without being accessed, which we refer to as dead sharing. We establish here new methods for characterizing cache block reference patterns, and we measure how these patterns change with variation in workload and block size. Our results show that 42 percent of 64-byte cache blocks are invalidated before more than one word has been read from the block and that 58 percent of blocks that have been modified only have a single word modified before an invalidation to the block occurs. Approximately 50 percent of blocks written and subsequently read by other caches shown no use of the newly written information before the block is again invalidated. In addition to our general analysis of reference patterns, we also present a detailed analysis of false sharing and dead sharing in each shared memory multiprocessor program studied. We find that the worst 10 blocks from each our traces contribute almost 50 percent of the false sharing misses and almost 20 percent of the true sharing misses (on average). A relatively simple restructuring of four of our workloads based on analysis of these 10 worst blocks leads to a 21 percent reduction in overall misses and a 15 percent reduction in execution time. Permitting the block size to vary (as could be accomplished with a sector cache) shows that bus traffic can be reduced by 88 percent (for 64-byte blocks) while also decreasing the miss ratio by 35 percent."
Book Synopsis Simulation Analysis of Data Sharing in Shared Memory Multiprocessors by : Susan J. Eggers
Download or read book Simulation Analysis of Data Sharing in Shared Memory Multiprocessors written by Susan J. Eggers and published by . This book was released on 1989 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: A cross-protocol comparison provided empirical evidence of the performance loss caused by increasing block size in write- invalidate protocols and cache size in write-broadcast. It then measured the extent to which read broadcast
Book Synopsis Analysis of Sector Caches for Uni- and Multiprocessor Systems by : Jeffrey Blair Rothman
Download or read book Analysis of Sector Caches for Uni- and Multiprocessor Systems written by Jeffrey Blair Rothman and published by . This book was released on 1999 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Compiler Analysis for Cache Coherence by : Lynn Choi
Download or read book Compiler Analysis for Cache Coherence written by Lynn Choi and published by . This book was released on 1996 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "In this paper, we present compiler algorithms for detecting references to stale data in shared-memory multiprocessors. The algorithm consists of two key analysis techniques, stale reference detection and locality preserving analysis. While the stale reference detection finds the memory reference patterns that may violate cache coherence, the locality preserving analysis minimizes the number of such stale references by analyzing both temporal and spatial reuses. By computing the regions referenced by arrays inside loops, we extend the previous scalar algorithms [8] for more precise analysis. We develop a full interprocedural array data-flow algorithm, which performs both bottom- up side-effect analysis and top-down context analysis on the procedure call graph to further exploit locality across procedure boundaries. The interprocedural algorithm eliminates cache invalidations at procedure boundaries, which were assumed in the previous compiler algorithms [9]. We have fully implemented the algorithm in the Polaris parallelizing compiler [27]. Using execution-driven simulations on Perfect Club benchmarks, we demonstrate how unnecessary cache misses can be eliminated by the automatic stale reference detection. The algorithm can be used to implement cache coherence in the shared-memory multiprocessors that do not have hardware directories, such as Cray T3D [20]."
Book Synopsis High Performance Computing by : Hans P. Zima
Download or read book High Performance Computing written by Hans P. Zima and published by Springer. This book was released on 2003-08-01 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: I wish to welcome all of you to the International Symposium on High Perf- mance Computing 2002 (ISHPC2002) and to Kansai Science City, which is not farfromtheancientcapitalsofJapan:NaraandKyoto.ISHPC2002isthefourth in the ISHPC series, which consists, to date, of ISHPC ’97 (Fukuoka, November 1997), ISHPC ’99 (Kyoto, May 1999), and ISHPC2000 (Tokyo, October 2000). The success of these symposia indicates the importance of this area and the strong interest of the research community. With all of the recent drastic changes in HPC technology trends, HPC has had and will continue to have a signi?cant impact on computer science and technology. I am pleased to serve as General Chair at a time when HPC plays a crucial role in the era of the IT (Information Technology) revolution. The objective of this symposium is to exchange the latest research results in software, architecture, and applications in HPC in a more informal and friendly atmosphere. I am delighted that the symposium is, like past successful ISHPCs, comprised of excellent invited talks, panels, workshops, as well as high-quality technical papers on various aspects of HPC. We hope that the symposium will provide an excellent opportunity for lively exchange and discussion about - rections in HPC technologies and all the participants will enjoy not only the symposium but also their stay in Kansai Science City.
Book Synopsis High Performance Computing by : Hans Zima
Download or read book High Performance Computing written by Hans Zima and published by Springer Science & Business Media. This book was released on 2002-05-02 with total page 579 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 4th International Symposium on High Performance Computing, ISHPC 2002, held in Kansai Science City, Japan, in May 2002 together with the two workshops WOMPEI 2002 and HPF/HiWEP 2002. The 51 revised papers presented were carefully reviewed and selected for inclusion in the proceedings. The book is organized in topical sections on networks, architectures, HPC systems, Earth Simulator, OpenMP-WOMPEI 2002, and HPF-HiWEP 2002.
Book Synopsis Parallel Architectures and Compilation Techniques by : Michel Cosnard
Download or read book Parallel Architectures and Compilation Techniques written by Michel Cosnard and published by North Holland. This book was released on 1994 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fine and medium grain parallelism continues to hold its own as a vital, vibrant research topic. Within the area, new developments in superscalar and VLIW architectures and their associated compilation techniques, have provided exciting new avenues to extract performance from a slowing technology curve.Comprising 28 full-length papers and a number of short (poster) papers, this publication offers a high quality exploration of the current state-of-the art in the field. It will be of particular interest to those involved in control structures and microprogramming; processor architectures; computer system implementation; programming techniques; and software engineering.
Download or read book Report written by and published by . This book was released on 2000 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cache and Interconnect Architectures in Multiprocessors by : Michel Dubois
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.
Book Synopsis The Cache Coherence Problem in Shared-Memory Multiprocessors by : Igor Tartalja
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.
Book Synopsis Parallel Processing by : Bruno Buchberger
Download or read book Parallel Processing written by Bruno Buchberger and published by Springer Science & Business Media. This book was released on 1994-08-30 with total page 918 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings -- Parallel Computing.
Book Synopsis The Interaction of Compilation Technology and Computer Architecture by : David J. Lilja
Download or read book The Interaction of Compilation Technology and Computer Architecture written by David J. Lilja and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: In brief summary, the following results were presented in this work: • A linear time approach was developed to find register requirements for any specified CS schedule or filled MRT. • An algorithm was developed for finding register requirements for any kernel that has a dependence graph that is acyclic and has no data reuse on machines with depth independent instruction templates. • We presented an efficient method of estimating register requirements as a function of pipeline depth. • We developed a technique for efficiently finding bounds on register require ments as a function of pipeline depth. • Presented experimental data to verify these new techniques. • discussed some interesting design points for register file size on a number of different architectures. REFERENCES [1] Robert P. Colwell, Robert P. Nix, John J O'Donnell, David B Papworth, and Paul K. Rodman. A VLIW Architecture for a Trace Scheduling Com piler. In Architectural Support for Programming Languages and Operating Systems, pages 180-192, 1982. [2] C. Eisenbeis, W. Jalby, and A. Lichnewsky. Compile-Time Optimization of Memory and Register Usage on the Cray-2. In Proceedings of the Second Workshop on Languages and Compilers, Urbana l/inois, August 1989. [3] C. Eisenbeis, William Jalby, and Alain Lichnewsky. Squeezing More CPU Performance Out of a Cray-2 by Vector Block Scheduling. In Proceedings of Supercomputing '88, pages 237-246, 1988. [4] Michael J. Flynn. Very High-Speed Computing Systems. Proceedings of the IEEE, 54:1901-1909, December 1966.
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 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 Proceedings written by and published by . This book was released on 1987 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Building ASIPs: The Mescal Methodology by : Matthias Gries
Download or read book Building ASIPs: The Mescal Methodology written by Matthias Gries and published by Springer Science & Business Media. This book was released on 2006-07-01 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: An increasing number of system designers are using ASIP’s rather than ASIC’s to implement their system solutions. Building ASIPs: The Mescal Methodology gives a simple but comprehensive methodology for the design of these application-specific instruction processors (ASIPs). The key elements of this methodology are: Judiciously using benchmarking Inclusively identifying the architectural space Efficiently describing and evaluating the ASIPs Comprehensively exploring the design space Successfully deploying the ASIP This book includes demonstrations of applications of the methodologies using the Tipi research framework as well as state-of-the-art commercial toolsets from CoWare and Tensilica.
Book Synopsis Modeling and Optimization of Parallel and Distributed Embedded Systems by : Arslan Munir
Download or read book Modeling and Optimization of Parallel and Distributed Embedded Systems written by Arslan Munir and published by John Wiley & Sons. This book was released on 2016-02-08 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the state-of-the-art in research in parallel and distributed embedded systems, which have been enabled by developments in silicon technology, micro-electro-mechanical systems (MEMS), wireless communications, computer networking, and digital electronics. These systems have diverse applications in domains including military and defense, medical, automotive, and unmanned autonomous vehicles. The emphasis of the book is on the modeling and optimization of emerging parallel and distributed embedded systems in relation to the three key design metrics of performance, power and dependability. Key features: Includes an embedded wireless sensor networks case study to help illustrate the modeling and optimization of distributed embedded systems. Provides an analysis of multi-core/many-core based embedded systems to explain the modeling and optimization of parallel embedded systems. Features an application metrics estimation model; Markov modeling for fault tolerance and analysis; and queueing theoretic modeling for performance evaluation. Discusses optimization approaches for distributed wireless sensor networks; high-performance and energy-efficient techniques at the architecture, middleware and software levels for parallel multicore-based embedded systems; and dynamic optimization methodologies. Highlights research challenges and future research directions. The book is primarily aimed at researchers in embedded systems; however, it will also serve as an invaluable reference to senior undergraduate and graduate students with an interest in embedded systems research.
Book Synopsis Advances in Visual Informatics by : Halimah Badioze Zaman
Download or read book Advances in Visual Informatics written by Halimah Badioze Zaman and published by Springer Nature. This book was released on 2023-10-19 with total page 677 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 8th International Conference on Advances in Visual Informatics, IVIC 2023, held in Selangor, Malaysia in November 2023. The 51 full papers presented were carefully reviewed and selected from 101 submissions. The conference focused on 6 tracks: Modeling and Simulation, Mixed Reality and HCI, Systems Integration and IoT, Cybersecurity, Energy Informatics and Intelligent Data Analytics.
