Optimisation automatique des chemins de données arithmétiques par l’utilisation des systèmes de numération redondants PDF Download
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Author: Sophie Bellœil-Dupuis
Publisher:
ISBN:
Category :
Languages : fr
Pages : 233
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Book Description
Cette thèse présente l'optimisation des chemins de données arithmétiques par l’intégration automatique de l’arithmétique redondante dans le flot de conception VLSI, de façon à le rendre plus accessible. Les travaux effectués se découpent en 2 phases. La 1ère a pour objectif d’incorporer les opérateurs redondants et le savoir-faire lié à leur usage dans la synthèse bas niveau. Les bonnes performances intrinsèques de ces opérateurs montrent l’intérêt de celle approche. Trois algorithmes d’optimisation sont proposés, basés sur la redéfinition des enchaînements entre opérateurs. La 2nde est consacrée à la mise en place de l’environnement de conception dans lequel seront utilisés ces algorithmes. Il répond aux besoins liés à l’arithmétique et fournit un langage de description de circuits avec un haut niveau d’abstraction. Ces algorithmes ont été appliqués sur des circuits arithmétiques. Les résultats confirment que l'intégration de l'arithmétique redondante améliore nettement les performances
Author: Sophie Bellœil-Dupuis
Publisher:
ISBN:
Category :
Languages : fr
Pages : 233
Get Book Here
Book Description
Cette thèse présente l'optimisation des chemins de données arithmétiques par l’intégration automatique de l’arithmétique redondante dans le flot de conception VLSI, de façon à le rendre plus accessible. Les travaux effectués se découpent en 2 phases. La 1ère a pour objectif d’incorporer les opérateurs redondants et le savoir-faire lié à leur usage dans la synthèse bas niveau. Les bonnes performances intrinsèques de ces opérateurs montrent l’intérêt de celle approche. Trois algorithmes d’optimisation sont proposés, basés sur la redéfinition des enchaînements entre opérateurs. La 2nde est consacrée à la mise en place de l’environnement de conception dans lequel seront utilisés ces algorithmes. Il répond aux besoins liés à l’arithmétique et fournit un langage de description de circuits avec un haut niveau d’abstraction. Ces algorithmes ont été appliqués sur des circuits arithmétiques. Les résultats confirment que l'intégration de l'arithmétique redondante améliore nettement les performances
Author: YANNICK.. DUMONTEIX
Publisher:
ISBN:
Category :
Languages : fr
Pages : 219
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Book Description
CETTE THESE PRESENTE L'INTEGRATION DE NOUVEAUX SYSTEMES DE REPRESENTATIONS DES NOMBRES, PLUS PRECISEMENT LES SYSTEMES DE NOTATIONS REDONDANTES, DANS LE FLOT DE CONCEPTION DE CURS DE CALCULS. LES TRAVAUX EFFECTUES SE DECOUPENT EN TROIS PHASES. LA PREMIERE EST CONSACREE A L'INTRODUCTION DES SYSTEMES DE NOTATIONS REDONDANTES AUX COTES DES SYSTEMES DE NOTATIONS CLASSIQUES. A CET EFFET NOUS AVONS DEFINI UNE NOUVELLE ARITHMETIQUE QUALIFIEE DE MIXTE. CELLE-CI REPOND AUX PROBLEMES LIES A L'USAGE SIMULTANE DES NOTATIONS CLASSIQUES ET REDONDANTES. ELLE A DONNE LIEU AU DEVELOPPEMENT DE NOUVEAUX OPERATEURS TRES PERFORMANTS CAPABLES DE TENIR COMPTE DE TOUTES LES COMBINAISONS DE NOTATIONS CLASSIQUES/REDONDANTES SUR LEURS ENTREES/SORTIES. LES TROIS OPERATIONS ELEMENTAIRES QUE SONT L'ADDITION, LA SOMME ET LA MULTIPLICATION, ONT ETE ETUDIEES. NOUS DISTINGUONS LE CAS PARTICULIER DE L'AJOUT DE DEUX OPERANDES (ADDITION) DU CAS GENERAL DE L'AJOUT DE TROIS OPERANDES ET PLUS (SOMME). CES DIVERSES OPERATIONS ONT ETE REALISEES SOUS FORMES DE GENERATEURS OU LA TAILLE, LE SIGNE ET LA NOTATION DE CHACUNE DES OPERANDES AINSI QUE L'ALGORITHME DE CALCUL UTILISE SONT PARAMETRABLES. LA DEUXIEME PHASE A EUT POUR OBJECTIF DE DETERMINER L'IMPACT DE L'ARITHMETIQUE MIXTE DANS LA CONCEPTION DE CHEMINS DE DONNEES. L'ETUDE PORTE SUR LA REDEFINITION DES ENCHAINEMENTS COMBINATOIRES ET SEQUENTIELS ENTRE OPERATEURS ET SUR L'UTILISATION D'ARBRES D'ADDITIONS (SOMME). CETTE SECONDE PHASE A PERMIS D'IDENTIFIER DES REGLES D'OPTIMISATION GENERIQUES LIEES A L'USAGE D'OPERATEURS ARITHMETIQUES DANS UNE ARCHITECTURE. LA TROISIEME PHASE EST CONSACREE A LA PRISE EN COMPTE DE NOUVEAUX SYSTEMES DE REPRESENTATIONS DANS LA LA SYNTHESE D'ARCHITECTURE. NOUS NOUS INTERESSONS ESSENTIELLEMENT A LA PHASE DE TRADUCTION COMPORTEMENTS STRUCTURES PHYSIQUES. L'OBJECTIF EST DE PROPOSER UNE METHODE DE PROJECTION EQUIVALENTE A CELLE UTILISEE DANS LA SYNTHESE BAS NIVEAU, INCORPORANT EN PLUS LES OPERATEURS ARITHMETIQUES ET LE SAVOIR-FAIRE LIE A LEUR USAGE. POUR REPONDRE A CES PARTICULARITES, LA PROJECTION NE SE FAIT PAS DIRECTEMENT VERS UNE BIBLIOTHEQUE DE CELLULES PRE-CARACTERISEES, MAIS VERS DES GENERATEURS D'ARCHITECTURES. CETTE DERNIERE PHASE A DONNE LIEU A LA DEFINITION D'UNE METHODOLOGIE DE CONCEPTION DE CHEMINS DE DONNEES BASEE SUR L'UTILISATION DE GENERATEURS DE FONCTIONS ELEMENTAIRES ET A LA SPECIFICATION D'UN OUTIL D'AIDE A LA CONCEPTION DE CHEMINS DE DONNEES. CE DERNIER PERMET DE DEFINIR UN CHEMIN DE DONNEES PAR UNE DESCRIPTION SIMPLIFIEE.
Author: Alan A. A. Donovan
Publisher: Addison-Wesley Professional
ISBN: 0134190564
Category : Computers
Languages : en
Pages : 1202
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Book Description
The Go Programming Language is the authoritative resource for any programmer who wants to learn Go. It shows how to write clear and idiomatic Go to solve real-world problems. The book does not assume prior knowledge of Go nor experience with any specific language, so you’ll find it accessible whether you’re most comfortable with JavaScript, Ruby, Python, Java, or C++. The first chapter is a tutorial on the basic concepts of Go, introduced through programs for file I/O and text processing, simple graphics, and web clients and servers. Early chapters cover the structural elements of Go programs: syntax, control flow, data types, and the organization of a program into packages, files, and functions. The examples illustrate many packages from the standard library and show how to create new ones of your own. Later chapters explain the package mechanism in more detail, and how to build, test, and maintain projects using the go tool. The chapters on methods and interfaces introduce Go’s unconventional approach to object-oriented programming, in which methods can be declared on any type and interfaces are implicitly satisfied. They explain the key principles of encapsulation, composition, and substitutability using realistic examples. Two chapters on concurrency present in-depth approaches to this increasingly important topic. The first, which covers the basic mechanisms of goroutines and channels, illustrates the style known as communicating sequential processes for which Go is renowned. The second covers more traditional aspects of concurrency with shared variables. These chapters provide a solid foundation for programmers encountering concurrency for the first time. The final two chapters explore lower-level features of Go. One covers the art of metaprogramming using reflection. The other shows how to use the unsafe package to step outside the type system for special situations, and how to use the cgo tool to create Go bindings for C libraries. The book features hundreds of interesting and practical examples of well-written Go code that cover the whole language, its most important packages, and a wide range of applications. Each chapter has exercises to test your understanding and explore extensions and alternatives. Source code is freely available for download from http://gopl.io/ and may be conveniently fetched, built, and installed using the go get command.
Author: Michael Sikorski
Publisher: No Starch Press
ISBN: 1593272901
Category : Computers
Languages : en
Pages : 802
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Book Description
Malware analysis is big business, and attacks can cost a company dearly. When malware breaches your defenses, you need to act quickly to cure current infections and prevent future ones from occurring. For those who want to stay ahead of the latest malware, Practical Malware Analysis will teach you the tools and techniques used by professional analysts. With this book as your guide, you'll be able to safely analyze, debug, and disassemble any malicious software that comes your way. You'll learn how to: –Set up a safe virtual environment to analyze malware –Quickly extract network signatures and host-based indicators –Use key analysis tools like IDA Pro, OllyDbg, and WinDbg –Overcome malware tricks like obfuscation, anti-disassembly, anti-debugging, and anti-virtual machine techniques –Use your newfound knowledge of Windows internals for malware analysis –Develop a methodology for unpacking malware and get practical experience with five of the most popular packers –Analyze special cases of malware with shellcode, C++, and 64-bit code Hands-on labs throughout the book challenge you to practice and synthesize your skills as you dissect real malware samples, and pages of detailed dissections offer an over-the-shoulder look at how the pros do it. You'll learn how to crack open malware to see how it really works, determine what damage it has done, thoroughly clean your network, and ensure that the malware never comes back. Malware analysis is a cat-and-mouse game with rules that are constantly changing, so make sure you have the fundamentals. Whether you're tasked with securing one network or a thousand networks, or you're making a living as a malware analyst, you'll find what you need to succeed in Practical Malware Analysis.
Author: Miguel F. Anjos
Publisher: Springer Science & Business Media
ISBN: 1461407699
Category : Business & Economics
Languages : en
Pages : 955
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Book Description
Semidefinite and conic optimization is a major and thriving research area within the optimization community. Although semidefinite optimization has been studied (under different names) since at least the 1940s, its importance grew immensely during the 1990s after polynomial-time interior-point methods for linear optimization were extended to solve semidefinite optimization problems. Since the beginning of the 21st century, not only has research into semidefinite and conic optimization continued unabated, but also a fruitful interaction has developed with algebraic geometry through the close connections between semidefinite matrices and polynomial optimization. This has brought about important new results and led to an even higher level of research activity. This Handbook on Semidefinite, Conic and Polynomial Optimization provides the reader with a snapshot of the state-of-the-art in the growing and mutually enriching areas of semidefinite optimization, conic optimization, and polynomial optimization. It contains a compendium of the recent research activity that has taken place in these thrilling areas, and will appeal to doctoral students, young graduates, and experienced researchers alike. The Handbook’s thirty-one chapters are organized into four parts: Theory, covering significant theoretical developments as well as the interactions between conic optimization and polynomial optimization; Algorithms, documenting the directions of current algorithmic development; Software, providing an overview of the state-of-the-art; Applications, dealing with the application areas where semidefinite and conic optimization has made a significant impact in recent years.
Author: Brian W. Kernighan
Publisher: Addison-Wesley Professional
ISBN: 0133133419
Category : Computers
Languages : en
Pages : 283
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Book Description
With the same insight and authority that made their book The Unix Programming Environment a classic, Brian Kernighan and Rob Pike have written The Practice of Programming to help make individual programmers more effective and productive. The practice of programming is more than just writing code. Programmers must also assess tradeoffs, choose among design alternatives, debug and test, improve performance, and maintain software written by themselves and others. At the same time, they must be concerned with issues like compatibility, robustness, and reliability, while meeting specifications. The Practice of Programming covers all these topics, and more. This book is full of practical advice and real-world examples in C, C++, Java, and a variety of special-purpose languages. It includes chapters on: debugging: finding bugs quickly and methodically testing: guaranteeing that software works correctly and reliably performance: making programs faster and more compact portability: ensuring that programs run everywhere without change design: balancing goals and constraints to decide which algorithms and data structures are best interfaces: using abstraction and information hiding to control the interactions between components style: writing code that works well and is a pleasure to read notation: choosing languages and tools that let the machine do more of the work Kernighan and Pike have distilled years of experience writing programs, teaching, and working with other programmers to create this book. Anyone who writes software will profit from the principles and guidance in The Practice of Programming.
