Performing Out-of-core FFTs on Parallel Disk Systems

Performing Out-of-core FFTs on Parallel Disk Systems PDF

Author: Thomas H. Cormen

Publisher:

Published: 1996

Total Pages: 20

ISBN-13:

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Abstract: "The Fast Fourier Transform (FFT) plays a key role in many areas of computational science and engineering. Although most one-dimensional FFT problems can be solved entirely in main memory, some important classes of applications require out-of-core techniques. For these, use of parallel I/O systems can improve performance considerably. This paper shows how to perform one-dimensional FFTs using a parallel disk system with independent disk accesses. We present both analytical and experimental results for performing out-of-core FFTs in two ways: using traditional virtual memory with demand paging, and using a provably asymptotically optimal algorithm for the Parallel Disk Model (PDM) of Vitter and Shriver. When run on a DEC 2100 server with a large memory and eight parallel disks, the optimal algorithm for the PDM runs up to 144.7 times faster than in-core methods under demand paging. Moreover, even including I/O costs, the normalized times for the optimal PDM algorithm are competitive, or better than, those for in-core methods even when they run entirely in memory."

Digital Systems and Applications

Digital Systems and Applications PDF

Author: Vojin G. Oklobdzija

Publisher: CRC Press

Published: 2017-12-19

Total Pages: 992

ISBN-13: 0849386209

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New design architectures in computer systems have surpassed industry expectations. Limits, which were once thought of as fundamental, have now been broken. Digital Systems and Applications details these innovations in systems design as well as cutting-edge applications that are emerging to take advantage of the fields increasingly sophisticated capabilities. This book features new chapters on parallelizing iterative heuristics, stream and wireless processors, and lightweight embedded systems. This fundamental text— Provides a clear focus on computer systems, architecture, and applications Takes a top-level view of system organization before moving on to architectural and organizational concepts such as superscalar and vector processor, VLIW architecture, as well as new trends in multithreading and multiprocessing. includes an entire section dedicated to embedded systems and their applications Discusses topics such as digital signal processing applications, circuit implementation aspects, parallel I/O algorithms, and operating systems Concludes with a look at new and future directions in computing Features articles that describe diverse aspects of computer usage and potentials for use Details implementation and performance-enhancing techniques such as branch prediction, register renaming, and virtual memory Includes a section on new directions in computing and their penetration into many new fields and aspects of our daily lives

The Computer Engineering Handbook

The Computer Engineering Handbook PDF

Author: Vojin G. Oklobdzija

Publisher: CRC Press

Published: 2019-07-05

Total Pages: 1648

ISBN-13: 1439833168

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After nearly six years as the field's leading reference, the second edition of this award-winning handbook reemerges with completely updated content and a brand new format. The Computer Engineering Handbook, Second Edition is now offered as a set of two carefully focused books that together encompass all aspects of the field. In addition to complete updates throughout the book to reflect the latest issues in low-power design, embedded processors, and new standards, this edition includes a new section on computer memory and storage as well as several new chapters on such topics as semiconductor memory circuits, stream and wireless processors, and nonvolatile memory technologies and applications.

Parallel I/O for High Performance Computing

Parallel I/O for High Performance Computing PDF

Author: John M. May

Publisher: Morgan Kaufmann

Published: 2001

Total Pages: 392

ISBN-13: 9781558606647

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"I enjoyed reading this book immensely. The author was uncommonly careful in his explanations. I'd recommend this book to anyone writing scientific application codes." -Peter S. Pacheco, University of San Francisco "This text provides a useful overview of an area that is currently not addressed in any book. The presentation of parallel I/O issues across all levels of abstraction is this book's greatest strength." -Alan Sussman, University of Maryland Scientific and technical programmers can no longer afford to treat I/O as an afterthought. The speed, memory size, and disk capacity of parallel computers continue to grow rapidly, but the rate at which disk drives can read and write data is improving far less quickly. As a result, the performance of carefully tuned parallel programs can slow dramatically when they read or write files-and the problem is likely to get far worse. Parallel input and output techniques can help solve this problem by creating multiple data paths between memory and disks. However, simply adding disk drives to an I/O system without considering the overall software design will not significantly improve performance. To reap the full benefits of a parallel I/O system, application programmers must understand how parallel I/O systems work and where the performance pitfalls lie. Parallel I/O for High Performance Computing directly addresses this critical need by examining parallel I/O from the bottom up. This important new book is recommended to anyone writing scientific application codes as the best single source on I/O techniques and to computer scientists as a solid up-to-date introduction to parallel I/O research. Features: An overview of key I/O issues at all levels of abstraction-including hardware, through the OS and file systems, up to very high-level scientific libraries. Describes the important features of MPI-IO, netCDF, and HDF-5 and presents numerous examples illustrating how to use each of these I/O interfaces. Addresses the basic question of how to read and write data efficiently in HPC applications. An explanation of various layers of storage - and techniques for using disks (and sometimes tapes) effectively in HPC applications.

Algorithms for Parallel Processing

Algorithms for Parallel Processing PDF

Author: Michael T. Heath

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 373

ISBN-13: 1461215161

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This IMA Volume in Mathematics and its Applications ALGORITHMS FOR PARALLEL PROCESSING is based on the proceedings of a workshop that was an integral part of the 1996-97 IMA program on "MATHEMATICS IN HIGH-PERFORMANCE COMPUTING. " The workshop brought together algorithm developers from theory, combinatorics, and scientific computing. The topics ranged over models, linear algebra, sorting, randomization, and graph algorithms and their analysis. We thank Michael T. Heath of University of lllinois at Urbana (Com puter Science), Abhiram Ranade of the Indian Institute of Technology (Computer Science and Engineering), and Robert S. Schreiber of Hewlett Packard Laboratories for their excellent work in organizing the workshop and editing the proceedings. We also take this opportunity to thank the National Science Founda tion (NSF) and the Army Research Office (ARO), whose financial support made the workshop possible. A vner Friedman Robert Gulliver v PREFACE The Workshop on Algorithms for Parallel Processing was held at the IMA September 16 - 20, 1996; it was the first workshop of the IMA year dedicated to the mathematics of high performance computing. The work shop organizers were Abhiram Ranade of The Indian Institute of Tech nology, Bombay, Michael Heath of the University of Illinois, and Robert Schreiber of Hewlett Packard Laboratories. Our idea was to bring together researchers who do innovative, exciting, parallel algorithms research on a wide range of topics, and by sharing insights, problems, tools, and methods to learn something of value from one another.

Handbook of Massive Data Sets

Handbook of Massive Data Sets PDF

Author: James Abello

Publisher: Springer

Published: 2013-12-21

Total Pages: 1209

ISBN-13: 1461500052

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The proliferation of massive data sets brings with it a series of special computational challenges. This "data avalanche" arises in a wide range of scientific and commercial applications. With advances in computer and information technologies, many of these challenges are beginning to be addressed by diverse inter-disciplinary groups, that indude computer scientists, mathematicians, statisticians and engineers, working in dose cooperation with application domain experts. High profile applications indude astrophysics, bio-technology, demographics, finance, geographi cal information systems, government, medicine, telecommunications, the environment and the internet. John R. Tucker of the Board on Mathe matical Seiences has stated: "My interest in this problern (Massive Data Sets) isthat I see it as the rnost irnportant cross-cutting problern for the rnathernatical sciences in practical problern solving for the next decade, because it is so pervasive. " The Handbook of Massive Data Sets is comprised of articles writ ten by experts on selected topics that deal with some major aspect of massive data sets. It contains chapters on information retrieval both in the internet and in the traditional sense, web crawlers, massive graphs, string processing, data compression, dustering methods, wavelets, op timization, external memory algorithms and data structures, the US national duster project, high performance computing, data warehouses, data cubes, semi-structured data, data squashing, data quality, billing in the large, fraud detection, and data processing in astrophysics, air pollution, biomolecular data, earth observation and the environment.

Algorithms and Data Structures for External Memory

Algorithms and Data Structures for External Memory PDF

Author: Jeffrey Scott Vitter

Publisher: Now Publishers Inc

Published: 2008

Total Pages: 192

ISBN-13: 1601981066

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Describes several useful paradigms for the design and implementation of efficient external memory (EM) algorithms and data structures. The problem domains considered include sorting, permuting, FFT, scientific computing, computational geometry, graphs, databases, geographic information systems, and text and string processing.

Discrete Methods in Epidemiology

Discrete Methods in Epidemiology PDF

Author: James Abello

Publisher: American Mathematical Soc.

Published: 2007-06-07

Total Pages: 276

ISBN-13: 9780821885840

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Selected data mining concepts by J. Abello, G. Cormode, D. Fradkin, D. Madigan, O. Melnik, and I. Muchnik Descriptive epidemiology: A brief introduction by D. Schneider Biostatistical challenges in molecular data analysis by W. D. Shannon Mining online media for global disease outbreak monitoring by L. Hirschman and L. E. Damianos Generalized contingency tables and concept lattices by D. Ozonoff, A. Pogel, and T. Hannan Graph partitions and concept lattices by J. Abello and A. Pogel Using transmission dynamics models to validate vaccine efficacy measures prior to conducting HIV vaccine efficacy trials by K. Desai, M.-C. Boily, B. Masse, and R. M. Anderson Causal tree of disease transmission and the spreading of infectious diseases by A. Vazquez Structure of social contact networks and their impact on epidemics by S. Eubank, V. S. Anil Kumar, M. V. Marathe, A. Srinivasan, and N. Wang Random graphs (and the spread of infections in a social network) by J. Abello and M. Capalbo Attempting to narrow the integrality gap for the firefighter problem on trees by S. G. Hartke Influences on breast cancer survival via SVM classification in the SEER database by J. Li, I. Muchnik, and D. Schneider Validation of epidemiological models: Chicken epidemiology in the UK by D. Fradkin, I. Muchnik, P. Hermans, and K. Morgan Index

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