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Machine Independent And And Or Parallel Execution Of Logic Programs
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Book Synopsis Machine Independent "and" and "or" Parallel Execution of Logic Programs by : Balkrishna Ramkumar
Download or read book Machine Independent "and" and "or" Parallel Execution of Logic Programs written by Balkrishna Ramkumar and published by . This book was released on 1991 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: Parallel machines are becoming increasingly cheap and more easily available. Commercial companies have already announced MIMD machines with more than 8000 processors. This prompts three questions: Should the programmer have to rewrite existing software for each new machine that comes along? Should it be necessary for the programmer to have intimate knowledge of the target machine in order to program it efficiently? Is it necessary for the programmer to identify the parallelism in programs explicitly? Our thesis is that the answer is 'no' on all three counts. We demonstrate that it is possible for users to write parallel programs in a machine independent manner. We address this problem at two levels. We first describe the design and implementation of a parallel run time support system called the Chare kernel that provides a uniform interface to the programmer on the class of MIMD machines. This support system makes it possible for programmers to write machine independent programs efficiently. We choose the logic programming paradigm where a high level specification of the problem is possible and it is amenable to the implicit detection of parallelism. We have designed and implemented a compiler that exploits AND and OR parallelism in logic programs. We have developed an emulator for abstract machine code generated by our compiler as an application on the Chare kernel which runs without modification on shared memory and nonshared memory machines alike. This thesis discusses addresses algorithmic issues relating to the design and implementation of an efficient parallel Prolog compiler on both shared and nonshared machines. This work differs significantly from most other related research, in part due to their dependence on a global memory address space. This work is the first to demonstrate that nonshared machines like the Intel and NCUBE hypercubes can be exploited effectively for the parallel execution of logic programs. It also provides a convincing demonstration of machine independent parallel programming.
Book Synopsis Optimisations for Machine Independent AND and OR Parallel Execution of Logic Programs by : B. Ramkumar
Download or read book Optimisations for Machine Independent AND and OR Parallel Execution of Logic Programs written by B. Ramkumar and published by . This book was released on 1990 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: We also describe grainsize control, a simple but extremely effective way of controlling the overhead of parallelization in our scheme. We show how grainsize control will make it possible on our system to achieve speeds comparable to the fastest available sequential compilers on one processor, and yet scale up with increasing number of processors. We also discuss some other optimisations briefly and illustrate the improvements due to the optimisations with some preliminary preformance data."
Book Synopsis Multiprocessor Execution of Logic Programs by : Gopal Gupta
Download or read book Multiprocessor Execution of Logic Programs written by Gopal Gupta and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multiprocessor Execution of Logic Programs addresses the problem of efficient implementation of logic programming languages, specifically Prolog, on multiprocessor architectures. The approaches and implementations developed attempt to take full advantage of sequential implementation technology developed for Prolog (such as the WAM) while exploiting all forms of control parallelism present in logic programs, namely, or-parallelism, independent and-parallelism and dependent and-parallelism. Coverage includes a thorough survey of parallel implementation techniques and parallel systems developed for Prolog. Multiprocessor Execution of Logic Programs is recommended for people implementing parallel logic programming systems, parallel symbolic systems, parallel AI systems, and parallel theorem proving systems. It will also be useful to people who wish to learn about the implementation of parallel logic programming systems.
Book Synopsis Parallel Execution of Logic Programs by : John S. Conery
Download or read book Parallel Execution of Logic Programs written by John S. Conery and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an updated version of my Ph.D. dissertation, The AND/OR Process Model for Parallel Interpretation of Logic Programs. The three years since that paper was finished (or so I thought then) have seen quite a bit of work in the area of parallel execution models and programming languages for logic programs. A quick glance at the bibliography here shows roughly 50 papers on these topics, 40 of which were published after 1983. The main difference between the book and the dissertation is the updated survey of related work. One of the appendices in the dissertation was an overview of a Prolog implementation of an interpreter based on the AND/OR Process Model, a simulator I used to get some preliminary measurements of parallelism in logic programs. In the last three years I have been involved with three other implementations. One was written in C and is now being installed on a small multiprocessor at the University of Oregon. Most of the programming of this interpreter was done by Nitin More under my direction for his M.S. project. The other two, one written in Multilisp and the other in Modula-2, are more limited, intended to test ideas about implementing specific aspects of the model. Instead of an appendix describing one interpreter, this book has more detail about implementation included in Chapters 5 through 7, based on a combination of ideas from the four interpreters.
Download or read book Logic Programming written by Lee Naish and published by MIT Press. This book was released on 1997 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers the latest research in areas such as theoretical foundations, constraints, concurrency and parallelism, deductive databases,language design and implementation, non-monotonic reasoning, and logicprogramming and the Internet. 8-12 July 1997, Leuven, Belgium The International Conference on Logic Programming is the main annual conference sponsored by the Association for Logic Programming. It covers the latest research in areas such as theoretical foundations, constraints, concurrency and parallelism, deductive databases, language design and implementation, non-monotonic reasoning, and logic programming and the Internet.
Author :Robert H. Halstead Publisher :Springer Science & Business Media ISBN 13 :9783540573968 Total Pages :438 pages Book Rating :4.5/5 (739 download)
Book Synopsis Parallel Symbolic Computing: Languages, Systems, and Applications by : Robert H. Halstead
Download or read book Parallel Symbolic Computing: Languages, Systems, and Applications written by Robert H. Halstead and published by Springer Science & Business Media. This book was released on 1993-11-03 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Parallel and distributed computing are becoming increasingly important as cost-effective ways to achieve high computational performance. Symbolic computations are notable for their use of irregular data structures and hence parallel symbolic computing has its own distinctive set of technical challenges. The papers in this book are based on presentations made at a workshop at MIT in October 1992. They present results in a wide range of areas including: speculative computation, scheduling techniques, program development tools and environments, programming languages and systems, models of concurrency and distribution, parallel computer architecture, and symbolic applications.
Book Synopsis Parallel Execution of Logic Programs by : Anthony Beaumont
Download or read book Parallel Execution of Logic Programs written by Anthony Beaumont and published by Springer Science & Business Media. This book was released on 1991-12-11 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Logic programming refers to execution of programs written in Horn logic. Among the advantages of this style of programming are its simple declarativeand procedural semantics, high expressive power and inherent nondeterminism. The papers included in this volume were presented at the Workshop on Parallel Logic Programming held in Paris on June 24, 1991, as part of the 8th International Conference on Logic Programming. The papers represent the state of the art in parallel logic programming, and report the current research in this area, including many new results. The three essential issues in parallel execution of logic programs which the papers address are: - Which form(s) of parallelism (or-parallelism, and-parallelism, stream parallelism, data-parallelism, etc.) will be exploited? - Will parallelism be explicitly programmed by programmers, or will it be exploited implicitly without their help? - Which target parallel architecture will the logic program(s) run on?
Book Synopsis Parallel Algorithms for Machine Intelligence and Vision by : Vipin Kumar
Download or read book Parallel Algorithms for Machine Intelligence and Vision written by Vipin Kumar and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent research results in the area of parallel algorithms for problem solving, search, natural language parsing, and computer vision, are brought together in this book. The research reported demonstrates that substantial parallelism can be exploited in various machine intelligence and vision problems. The chapter authors are prominent researchers actively involved in the study of parallel algorithms for machine intelligence and vision. Extensive experimental studies are presented that will help the reader in assessing the usefulness of an approach to a specific problem. Intended for students and researchers actively involved in parallel algorithms design and in machine intelligence and vision, this book will serve as a valuable reference work as well as an introduction to several research directions in these areas.
Book Synopsis Parallel Execution of Logic Programs by : Anthony Beaumont
Download or read book Parallel Execution of Logic Programs written by Anthony Beaumont and published by Springer. This book was released on 1991-12-11 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Logic programming refers to execution of programs written in Horn logic. Among the advantages of this style of programming are its simple declarativeand procedural semantics, high expressive power and inherent nondeterminism. The papers included in this volume were presented at the Workshop on Parallel Logic Programming held in Paris on June 24, 1991, as part of the 8th International Conference on Logic Programming. The papers represent the state of the art in parallel logic programming, and report the current research in this area, including many new results. The three essential issues in parallel execution of logic programs which the papers address are: - Which form(s) of parallelism (or-parallelism, and-parallelism, stream parallelism, data-parallelism, etc.) will be exploited? - Will parallelism be explicitly programmed by programmers, or will it be exploited implicitly without their help? - Which target parallel architecture will the logic program(s) run on?
Book Synopsis Concepts, Design, and Performance Analysis of a Parallel Prolog Machine by : Joachim Beer
Download or read book Concepts, Design, and Performance Analysis of a Parallel Prolog Machine written by Joachim Beer and published by Springer Science & Business Media. This book was released on 1989-12-13 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph presents a novel execution model for the parallel execution of standard sequential Prolog. In this execution model Prolog procedure calls can be efficiently pipelined, and the author shows how even fully deterministic Prolog programs can be effectively mapped onto the proposed architecture. The design is based on a highly optimized abstract Prolog specific instruction set. A special feature of this work is a sophisticated classification scheme for Prolog variables which substantially reduces the overhead for unification with occur-check. To support the model an architecture consisting of a circular pipeline of independent processors has been designed. This pipeline has been designed to work as a co-processor to a UNIX based workstation. In contrast to other attempts to execute sequential Prolog in parallel, the proposed model does not restrict the use of any of the standard Prolog language features. The book gives a full account of the execution model, the system architecture, and the abstract Prolog instruction set.
Book Synopsis Logic Programming '85 by : Eiiti Wada
Download or read book Logic Programming '85 written by Eiiti Wada and published by Springer Science & Business Media. This book was released on 1986-05 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Execution Models of Prolog for Parallel Computers by : Péter Kacsuk
Download or read book Execution Models of Prolog for Parallel Computers written by Péter Kacsuk and published by MIT Press (MA). This book was released on 1990 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research described in this book addresses the semantic gap between logic programming languages and the architecture of parallel computers - the problem of how to implement logic programming languages on parallel computers in a way that can most effectively exploit the inherent parallelism of the language and efficiently utilize the parallel architecture of the computer. Following a useful review of other research results, the first project explores the possibilities of implementing logic programs on MIMD, nonshared memory massively parallel computers containing 100 to 1,000 processing elements. The second investigates the possibility of implementing Prolog on a typical SIMD machine, called a Distributed Processor Array. The author's objectives are to define a parallel computational paradigm (the Extended Cellular-Dataflow Model) that can be used to create a Parallel Prolog Abstract Machine as a general starting point for implementing logic programming languages on parallel computers, to exploit the different types of parallelism of these programs, to define an efficient parallel logic machine, to explore the possibilities of implementing logic programming languages on array processors, such as the DAP, to invent parallel implementation techniques for effectively executing Prolog on the DAP, and to define a parallel extension of Prolog that is able to utilize the processor aggregate of the DAP for effectively solving numerical subproblems within logic programs Peter Kacsuk is with Multilogic Computing Ltd. of Budapest, Hungary.
Book Synopsis Parallel and Constraint Logic Programming by : Ioannis Vlahavas
Download or read book Parallel and Constraint Logic Programming written by Ioannis Vlahavas and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: Constraint Logic Programming (CLP), an area of extreme research interest in recent years, extends the semantics of Prolog in such a way that the combinatorial explosion, a characteristic of most problems in the field of Artificial Intelligence, can be tackled efficiently. By employing solvers dedicated to each domain instead of the unification algorithm, CLP drastically reduces the search space of the problem, which leads to increased efficiency in the execution of logic programs. CLP offers the possibility of solving complex combinatorial problems in an efficient way, and at the same time maintains the advantages offered by the declarativeness of logic programming. The aim of this book is to present parallel and constraint logic programming, offering a basic understanding of the two fields to the reader new to the area. The first part of the book gives an introduction to the fundamental aspects of conventional logic programming which is necessary for understanding the parts that follow. The second part includes an introduction to parallel logic programming, architectures and implementations proposed in the area. Finally, the third part presents the principles of constraint logic programming. The last two parts also include descriptions of the supporting facilities for the two paradigms in two popular systems; ECLIPSe and SICStus. These platforms have been selected mainly because they offer both parallel and constraint features. Annotated and explained examples are also included in the relevant parts, offering a valuable guide and a first practical experience to the reader. Finally, applications of the covered paradigms are presented. The authors felt that a book of this kind should provide some theoretical background necessary for the understanding of the covered logic programming paradigms, and a quick start for the reader interested in writing parallel and constraint logic programming programs. However it is outside the scope of this book to provide a deep theoretical background of the two areas. In that sense, this book is addressed to a public interested in obtaining a knowledge of the domain, without spending the time and effort to understand the extensive theoretical work done in the field – namely postgraduate and advanced undergraduate students in the area of logic programming. This book fills a gap in the current bibliography, since there is no comprehensive book of this level that covers the areas of conventional, parallel, and constraint logic programming. Parallel and Constraint Logic Programming: An Introduction to Logic, Parallelism and Constraints is appropriate for an advanced level course on Logic Programming or Constraints, and as a reference for practitioners and researchers in industry.
Book Synopsis Logic Programming '86 by : Eiiti Wada
Download or read book Logic Programming '86 written by Eiiti Wada and published by Springer Science & Business Media. This book was released on 1987-06-03 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the papers presented, and subsequently submitted for publication, at the 5th Logic Programming Conference, held June 23-26, 1986 in Tokyo. Topics covered include Prolog machine architecture, Prolog processors, variations of Prolog language, and applications of Prolog to natural language understanding, and expert systems. Most of the works reported in the volume are related to the Japanese Fifth Generation Computer Project allowing readers to compare results from this project with those from similar projects currently being conducted in other countries.
Book Synopsis Parallelism and Implementation of Logic and Constraint Logic Programming by : Ines de Castro Dutra
Download or read book Parallelism and Implementation of Logic and Constraint Logic Programming written by Ines de Castro Dutra and published by Nova Biomedical Books. This book was released on 1999 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the main areas of research in logic programming is the design and implementation of sequential and parallel (constraint) logic programming systems. This research goes broadly from the design and specification of novel implementation technology to its actual evaluation in real life situations. This book includes topics such as the analysis and description of implemented systems (or currently under implementation) and their associated techniques, problems found in their development or design, and steps taken towards the solution of these problems.
Book Synopsis Combined And-Or Parallel Execution of Logic Programs by : Gopal Gupta
Download or read book Combined And-Or Parallel Execution of Logic Programs written by Gopal Gupta and published by . This book was released on 1988 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: A number of approaches have recently been proposed for the parallel execution of logic programming languages, but most of them deal with either or-parallelism or and-parallelism but not both. This paper describes a high-level design for efficiently supporting both and-parallelism and or-parallelism. Our approach is based on the binding arrays method for or-parallelism and the RAP method for and-parallelism. Extensions to the binding-arrays method are proposed in order to achieve constant access-time to variables in the presence of and-parallelism. The RAP (Restricted And-Parallelism) method becomes simplified because backtracking is unnecessary in the presence of or-parallelism. The author's approach has the added effect of eliminating redundant computations when goals exhibit both and-and or-parallelism. The paper first briefly describes the basic issues in pure and-parallelism and or-parallelism, states desirable criteria for their implementation (with respect to variable access, task creation and switching), and then describes the combined and-or implementation.
Book Synopsis Programming Language Implementation and Logic Programming by : Jaan Penjam
Download or read book Programming Language Implementation and Logic Programming written by Jaan Penjam and published by Springer Science & Business Media. This book was released on 1994-08-24 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume constitutes the proceedings of the 6th International Symposium on Programming Language Implementation and Logic Programming (PLILP '94), held in Madrid, Spain in September 1994. The volume contains 27 full research papers selected from 67 submissions as well as abstracts of full versions of 3 invited talks by renowned researchers and abstracts of 11 system demonstrations and poster presentations. Among the topics covered are parallelism and concurrency; implementation techniques; partial evaluation, synthesis, and language issues; constraint programming; meta-programming and program transformation; functional-logic programming; and program analysis and abstract interpretation.
