Download or read book Lightweight Opportunistic Memory Resilience written by Irina Alam and published by . This book was released on 2021 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reliability of memory subsystems is worsening rapidly and needs to be considered as one of the primary design objectives when designing today's computer systems. From on-chip embedded memories in Internet-of-Things (IoT) devices and on-chip caches to off-chip main memories, they have become the limiting factor in the reliability of these computing systems. Today's applications demand large capacity of on-chip or off-chip memory or both. With aggressive technology scaling, coupled with the increase in the total area devoted to memory in a chip, memories are becoming particularly sensitive to manufacturing process variation, environmental operating conditions, and aging-induced wearout. However, the challenge with memory reliability is that the resiliency techniques need to be effective but with minimal overhead. Today's typical error correcting schemes do not take into consideration the data value that they are protecting and are purely based on positional errors. This increases their overheads and makes them too expensive, especially for on-chip memories. Also, the drive for denser off-chip main memories is worsening their reliability. But strengthening today's error correction techniques will result in non-negligible increase in overheads. Hence, this dissertation proposes Lightweight Opportunistic Memory Resilience. We exploit the following three aspects to make memories more reliable with low overheads: (1) Underlying memory fault models, (2) Data value behavior of commonly used applications, and (3) The architecture of the memory itself. We opportunistically exploit these three aspects to provide stronger protection against memory errors. We design novel error detecting and correcting codes and develop several other architectural fault tolerance techniques at minimal overheads compared to the conventional reliability techniques used in today's memories. In part 1 of this dissertation, we address the reliability concerns in lightweight on-chip caches or embedded memories like scratchpads in IoT devices. These memories are becoming larger in size, but needs to be low power. Using standard error correcting codes or traditional row/column sparing to recover from faults are too expensive for them. Here, we leverage the fact that manufacturing defects and aging-induced hard faults usually only affect only a few bits in a memory. These bits, however, inhibit how low of a voltage these chips can be operated at. Traditional software fails even when a small number of bits in a memory are faulty. For the first time, we provide two solutions, FaultLink and SAME-Infer, which help deal with these weak faulty cells in the memory by generating a custom-tailored fault-aware application binary image for each chip. Next, we designed Software-Defined Error Localization Code (SDELC) and Parity++ as lightweight runtime error recovery techniques that leverage the insight that data values have locality in them and certain ranges of data values occur more frequently than others. Conventional ECC is too expensive for these lightweight memories. SDELC uses novel ultra-lightweight error-localizing codes to localize the error to a chunk in the data. It then heuristically recovers from the localized error by exploiting side information about the application's memory contents. Parity++ is a novel unequal message protection scheme that preferentially provides stronger error protection to certain ''special messages". This protection scheme provides Single Error Detection (SED) for all messages and Single Error Correction (SEC) for a subset of special messages. Both these novel codes utilize data value behavior to provide single error correction at 2.5x-4x lower overhead than a conventional hamming single error correcting code. In part 2 of this dissertation, we focus on off-chip main memory technologies. We primarily leverage the details of the memory architecture itself and their dominant fault mechanisms to effectively design reliability schemes. The need for larger main memory capacity in today's workstation or server environments is driving the use of non-volatile memories (NVM) or techniques to enable high density DRAMs. Due to aggressive scaling, the single-bit error rate in DRAMs is steadily increasing and DRAM manufacturers are adopting on-die error correction coding (ECC) schemes, along with within memory controller ECC, to correct single-bit errors in the memory. In COMET we have shown that today's standard on-die ECCs can lead to silent data corruption if not designed correctly. We propose a collaborative on-die and in-controller error correction scheme that prevents double-bit error induced silent data corruption and corrects 99.9997% of these double-bit errors at absolutely no additional storage, latency, and area overheads. Not just DRAMs, reliability is a major concern in most of the emerging NVM technologies. In Compression with Multi-ECC (CME), we propose a new opportunistic compression-based ECC protection scheme for magnetic memory-based main memories. CME compresses every memory line and uses the saved bits to add stronger protection. In some of these NVMs, error rates increase as we try to improve read/write latencies. In PCM-Duplicate, we propose an enhanced PCM architecture that reduces PCM read latency by more than 3x and makes it comparable to that of DRAM. We then use ECC to tolerate the additional errors that arise because of the proposed optimizations. Overall, we have developed a complementary suite of novel methods for tolerating faults and correcting errors in different levels of the memory hierarchy. We exploit the memory architecture and fault mechanisms as well as the application data behavior to tune the proposed solutions to the particular memory characteristics; lightweight solutions for low-cost embedded memories and latency-critical on-chip caches while stronger protection for off-chip main memory subsystems. With memory reliability being a major bottleneck in today's systems, these novel solutions are expected to alleviate this problem, help cope with the unique outcomes of hardware variability in memory systems and provide improved reliability at minimal cost.
Download or read book Dependable Embedded Systems written by Jörg Henkel and published by Springer Nature. This book was released on 2020-12-09 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Open Access book introduces readers to many new techniques for enhancing and optimizing reliability in embedded systems, which have emerged particularly within the last five years. This book introduces the most prominent reliability concerns from today’s points of view and roughly recapitulates the progress in the community so far. Unlike other books that focus on a single abstraction level such circuit level or system level alone, the focus of this book is to deal with the different reliability challenges across different levels starting from the physical level all the way to the system level (cross-layer approaches). The book aims at demonstrating how new hardware/software co-design solution can be proposed to ef-fectively mitigate reliability degradation such as transistor aging, processor variation, temperature effects, soft errors, etc. Provides readers with latest insights into novel, cross-layer methods and models with respect to dependability of embedded systems; Describes cross-layer approaches that can leverage reliability through techniques that are pro-actively designed with respect to techniques at other layers; Explains run-time adaptation and concepts/means of self-organization, in order to achieve error resiliency in complex, future many core systems.
Download or read book MITRE Systems Engineering Guide written by and published by . This book was released on 2012-06-05 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book BUILDING a MODERN DATA CENTER Principles and Strategies of Design written by Scott D. Lowe and published by . This book was released on 2016-01-10 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cloud Computing written by Rajkumar Buyya and published by John Wiley & Sons. This book was released on 2010-12-17 with total page 607 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary purpose of this book is to capture the state-of-the-art in Cloud Computing technologies and applications. The book will also aim to identify potential research directions and technologies that will facilitate creation a global market-place of cloud computing services supporting scientific, industrial, business, and consumer applications. We expect the book to serve as a reference for larger audience such as systems architects, practitioners, developers, new researchers and graduate level students. This area of research is relatively recent, and as such has no existing reference book that addresses it. This book will be a timely contribution to a field that is gaining considerable research interest, momentum, and is expected to be of increasing interest to commercial developers. The book is targeted for professional computer science developers and graduate students especially at Masters level. As Cloud Computing is recognized as one of the top five emerging technologies that will have a major impact on the quality of science and society over the next 20 years, its knowledge will help position our readers at the forefront of the field.
Download or read book Power Aware Computing written by Robert Graybill and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the advent of portable and autonomous computing systems, power con sumption has emerged as a focal point in many research projects, commercial systems and DoD platforms. One current research initiative, which drew much attention to this area, is the Power Aware Computing and Communications (PAC/C) program sponsored by DARPA. Many of the chapters in this book include results from work that have been supported by the PACIC program. The performance of computer systems has been tremendously improving while the size and weight of such systems has been constantly shrinking. The capacities of batteries relative to their sizes and weights has been also improv ing but at a rate which is much slower than the rate of improvement in computer performance and the rate of shrinking in computer sizes. The relation between the power consumption of a computer system and it performance and size is a complex one which is very much dependent on the specific system and the technology used to build that system. We do not need a complex argument, however, to be convinced that energy and power, which is the rate of energy consumption, are becoming critical components in computer systems in gen eral, and portable and autonomous systems, in particular. Most of the early research on power consumption in computer systems ad dressed the issue of minimizing power in a given platform, which usually translates into minimizing energy consumption, and thus, longer battery life.
Download or read book Cognitive Hyperconnected Digital Transformation written by Ovidiu Vermesan and published by CRC Press. This book was released on 2022-09-01 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cognitive Hyperconnected Digital Transformation provides an overview of the current Internet of Things (IoT) landscape, ranging from research, innovation and development priorities to enabling technologies in a global context. It is intended as a standalone book in a series that covers the Internet of Things activities of the IERC-Internet of Things European Research Cluster, including both research and technological innovation, validation and deployment. The book builds on the ideas put forward by the European Research Cluster, the IoT European Platform Initiative (IoT-EPI) and the IoT European Large-Scale Pilots Programme, presenting global views and state-of-the-art results regarding the challenges facing IoT research, innovation, development and deployment in the next years. Hyperconnected environments integrating industrial/business/consumer IoT technologies and applications require new IoT open systems architectures integrated with network architecture (a knowledge-centric network for IoT), IoT system design and open, horizontal and interoperable platforms managing things that are digital, automated and connected and that function in real-time with remote access and control based on Internet-enabled tools. The IoT is bridging the physical world with the virtual world by combining augmented reality (AR), virtual reality (VR), machine learning and artificial intelligence (AI) to support the physical-digital integrations in the Internet of mobile things based on sensors/actuators, communication, analytics technologies, cyber-physical systems, software, cognitive systems and IoT platforms with multiple functionalities. These IoT systems have the potential to understand, learn, predict, adapt and operate autonomously. They can change future behaviour, while the combination of extensive parallel processing power, advanced algorithms and data sets feed the cognitive algorithms that allow the IoT systems to develop new services and propose new solutions. IoT technologies are moving into the industrial space and enhancing traditional industrial platforms with solutions that break free of device-, operating system- and protocol-dependency. Secure edge computing solutions replace local networks, web services replace software, and devices with networked programmable logic controllers (NPLCs) based on Internet protocols replace devices that use proprietary protocols. Information captured by edge devices on the factory floor is secure and accessible from any location in real time, opening the communication gateway both vertically (connecting machines across the factory and enabling the instant availability of data to stakeholders within operational silos) and horizontally (with one framework for the entire supply chain, across departments, business units, global factory locations and other markets). End-to-end security and privacy solutions in IoT space require agile, context-aware and scalable components with mechanisms that are both fluid and adaptive. The convergence of IT (information technology) and OT (operational technology) makes security and privacy by default a new important element where security is addressed at the architecture level, across applications and domains, using multi-layered distributed security measures. Blockchain is transforming industry operating models by adding trust to untrusted environments, providing distributed security mechanisms and transparent access to the information in the chain. Digital technology platforms are evolving, with IoT platforms integrating complex information systems, customer experience, analytics and intelligence to enable new capabilities and business models for digital business.
Download or read book Postwar written by Tony Judt and published by Penguin. This book was released on 2006-09-05 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt: Finalist for the Pulitzer Prize • Winner of the Council on Foreign Relations Arthur Ross Book Award • One of the New York Times' Ten Best Books of the Year “Impressive . . . Mr. Judt writes with enormous authority.” —The Wall Street Journal “Magisterial . . . It is, without a doubt, the most comprehensive, authoritative, and yes, readable postwar history.” —The Boston Globe Almost a decade in the making, this much-anticipated grand history of postwar Europe from one of the world's most esteemed historians and intellectuals is a singular achievement. Postwar is the first modern history that covers all of Europe, both east and west, drawing on research in six languages to sweep readers through thirty-four nations and sixty years of political and cultural change-all in one integrated, enthralling narrative. Both intellectually ambitious and compelling to read, thrilling in its scope and delightful in its small details, Postwar is a rare joy. Judt's book, Ill Fares the Land, republished in 2021 featuring a new preface by bestselling author of Between the World and Me and The Water Dancer, Ta-Nehisi Coates.
Download or read book Cybernetic Revolutionaries written by Eden Medina and published by MIT Press. This book was released on 2014-01-10 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: A historical study of Chile's twin experiments with cybernetics and socialism, and what they tell us about the relationship of technology and politics. In Cybernetic Revolutionaries, Eden Medina tells the history of two intersecting utopian visions, one political and one technological. The first was Chile's experiment with peaceful socialist change under Salvador Allende; the second was the simultaneous attempt to build a computer system that would manage Chile's economy. Neither vision was fully realized—Allende's government ended with a violent military coup; the system, known as Project Cybersyn, was never completely implemented—but they hold lessons for today about the relationship between technology and politics. Drawing on extensive archival material and interviews, Medina examines the cybernetic system envisioned by the Chilean government—which was to feature holistic system design, decentralized management, human-computer interaction, a national telex network, near real-time control of the growing industrial sector, and modeling the behavior of dynamic systems. She also describes, and documents with photographs, the network's Star Trek-like operations room, which featured swivel chairs with armrest control panels, a wall of screens displaying data, and flashing red lights to indicate economic emergencies. Studying project Cybersyn today helps us understand not only the technological ambitions of a government in the midst of political change but also the limitations of the Chilean revolution. This history further shows how human attempts to combine the political and the technological with the goal of creating a more just society can open new technological, intellectual, and political possibilities. Technologies, Medina writes, are historical texts; when we read them we are reading history.
Download or read book IoT Fundamentals written by David Hanes and published by Cisco Press. This book was released on 2017-05-30 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today, billions of devices are Internet-connected, IoT standards and protocols are stabilizing, and technical professionals must increasingly solve real problems with IoT technologies. Now, five leading Cisco IoT experts present the first comprehensive, practical reference for making IoT work. IoT Fundamentals brings together knowledge previously available only in white papers, standards documents, and other hard-to-find sources—or nowhere at all. The authors begin with a high-level overview of IoT and introduce key concepts needed to successfully design IoT solutions. Next, they walk through each key technology, protocol, and technical building block that combine into complete IoT solutions. Building on these essentials, they present several detailed use cases, including manufacturing, energy, utilities, smart+connected cities, transportation, mining, and public safety. Whatever your role or existing infrastructure, you’ll gain deep insight what IoT applications can do, and what it takes to deliver them. Fully covers the principles and components of next-generation wireless networks built with Cisco IOT solutions such as IEEE 802.11 (Wi-Fi), IEEE 802.15.4-2015 (Mesh), and LoRaWAN Brings together real-world tips, insights, and best practices for designing and implementing next-generation wireless networks Presents start-to-finish configuration examples for common deployment scenarios Reflects the extensive first-hand experience of Cisco experts
Download or read book Ultra Low Voltage Nano Scale Memories written by Kiyoo Itoh and published by Springer Science & Business Media. This book was released on 2007-09-04 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultra-low voltage large-scale integrated circuits (LSIs) in nano-scale technologies are needed both to meet the needs of a rapidly growing mobile cell phone market and to offset a significant increase in the power dissipation of high-end microprocessor units. The goal of this book is to provide a detailed explanation of the state-of-the-art nanometer and sub-1-V memory LSIs that are playing decisive roles in power conscious systems. Emerging problems between the device, circuit, and system levels are systematically discussed in terms of reliable high-speed operations of memory cells and peripheral logic circuits. The effectiveness of solutions at device and circuit levels is also described at length through clarifying noise components in an array, and even essential differences in ultra-low voltage operations between DRAMs and SRAMs.
Download or read book Managing Risk and Information Security written by Malcolm Harkins and published by Apress. This book was released on 2013-03-21 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: Managing Risk and Information Security: Protect to Enable, an ApressOpen title, describes the changing risk environment and why a fresh approach to information security is needed. Because almost every aspect of an enterprise is now dependent on technology, the focus of IT security must shift from locking down assets to enabling the business while managing and surviving risk. This compact book discusses business risk from a broader perspective, including privacy and regulatory considerations. It describes the increasing number of threats and vulnerabilities, but also offers strategies for developing solutions. These include discussions of how enterprises can take advantage of new and emerging technologies—such as social media and the huge proliferation of Internet-enabled devices—while minimizing risk. With ApressOpen, content is freely available through multiple online distribution channels and electronic formats with the goal of disseminating professionally edited and technically reviewed content to the worldwide community. Here are some of the responses from reviewers of this exceptional work: “Managing Risk and Information Security is a perceptive, balanced, and often thought-provoking exploration of evolving information risk and security challenges within a business context. Harkins clearly connects the needed, but often-overlooked linkage and dialog between the business and technical worlds and offers actionable strategies. The book contains eye-opening security insights that are easily understood, even by the curious layman.” Fred Wettling, Bechtel Fellow, IS&T Ethics & Compliance Officer, Bechtel “As disruptive technology innovations and escalating cyber threats continue to create enormous information security challenges, Managing Risk and Information Security: Protect to Enable provides a much-needed perspective. This book compels information security professionals to think differently about concepts of risk management in order to be more effective. The specific and practical guidance offers a fast-track formula for developing information security strategies which are lock-step with business priorities.” Laura Robinson, Principal, Robinson Insight Chair, Security for Business Innovation Council (SBIC) Program Director, Executive Security Action Forum (ESAF) “The mandate of the information security function is being completely rewritten. Unfortunately most heads of security haven’t picked up on the change, impeding their companies’ agility and ability to innovate. This book makes the case for why security needs to change, and shows how to get started. It will be regarded as marking the turning point in information security for years to come.” Dr. Jeremy Bergsman, Practice Manager, CEB “The world we are responsible to protect is changing dramatically and at an accelerating pace. Technology is pervasive in virtually every aspect of our lives. Clouds, virtualization and mobile are redefining computing – and they are just the beginning of what is to come. Your security perimeter is defined by wherever your information and people happen to be. We are attacked by professional adversaries who are better funded than we will ever be. We in the information security profession must change as dramatically as the environment we protect. We need new skills and new strategies to do our jobs effectively. We literally need to change the way we think. Written by one of the best in the business, Managing Risk and Information Security challenges traditional security theory with clear examples of the need for change. It also provides expert advice on how to dramatically increase the success of your security strategy and methods – from dealing with the misperception of risk to how to become a Z-shaped CISO. Managing Risk and Information Security is the ultimate treatise on how to deliver effective security to the world we live in for the next 10 years. It is absolute must reading for anyone in our profession – and should be on the desk of every CISO in the world.” Dave Cullinane, CISSP CEO Security Starfish, LLC “In this overview, Malcolm Harkins delivers an insightful survey of the trends, threats, and tactics shaping information risk and security. From regulatory compliance to psychology to the changing threat context, this work provides a compelling introduction to an important topic and trains helpful attention on the effects of changing technology and management practices.” Dr. Mariano-Florentino Cuéllar Professor, Stanford Law School Co-Director, Stanford Center for International Security and Cooperation (CISAC), Stanford University “Malcolm Harkins gets it. In his new book Malcolm outlines the major forces changing the information security risk landscape from a big picture perspective, and then goes on to offer effective methods of managing that risk from a practitioner's viewpoint. The combination makes this book unique and a must read for anyone interested in IT risk." Dennis Devlin AVP, Information Security and Compliance, The George Washington University “Managing Risk and Information Security is the first-to-read, must-read book on information security for C-Suite executives. It is accessible, understandable and actionable. No sky-is-falling scare tactics, no techno-babble – just straight talk about a critically important subject. There is no better primer on the economics, ergonomics and psycho-behaviourals of security than this.” Thornton May, Futurist, Executive Director & Dean, IT Leadership Academy “Managing Risk and Information Security is a wake-up call for information security executives and a ray of light for business leaders. It equips organizations with the knowledge required to transform their security programs from a “culture of no” to one focused on agility, value and competitiveness. Unlike other publications, Malcolm provides clear and immediately applicable solutions to optimally balance the frequently opposing needs of risk reduction and business growth. This book should be required reading for anyone currently serving in, or seeking to achieve, the role of Chief Information Security Officer.” Jamil Farshchi, Senior Business Leader of Strategic Planning and Initiatives, VISA “For too many years, business and security – either real or imagined – were at odds. In Managing Risk and Information Security: Protect to Enable, you get what you expect – real life practical ways to break logjams, have security actually enable business, and marries security architecture and business architecture. Why this book? It's written by a practitioner, and not just any practitioner, one of the leading minds in Security today.” John Stewart, Chief Security Officer, Cisco “This book is an invaluable guide to help security professionals address risk in new ways in this alarmingly fast changing environment. Packed with examples which makes it a pleasure to read, the book captures practical ways a forward thinking CISO can turn information security into a competitive advantage for their business. This book provides a new framework for managing risk in an entertaining and thought provoking way. This will change the way security professionals work with their business leaders, and help get products to market faster. The 6 irrefutable laws of information security should be on a stone plaque on the desk of every security professional.” Steven Proctor, VP, Audit & Risk Management, Flextronics
Download or read book Smart and Multifunctional Concrete Toward Sustainable Infrastructures written by Baoguo Han and published by Springer. This book was released on 2017-06-12 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest research advances and findings in the field of smart/multifunctional concretes, focusing on the principles, design and fabrication, test and characterization, performance and mechanism, and their applications in infrastructures. It also discusses future challenges in the development and application of smart/multifunctional concretes, providing useful theory, ideas and principles, as well as insights and practical guidance for developing sustainable infrastructures. It is a valuable resource for researchers, scientists and engineers in the field of civil-engineering materials and infrastructures.
Download or read book Persistent Object Systems written by Graham N.C. Kirby and published by Springer Science & Business Media. This book was released on 2001-10-10 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the thoroughly refereed post-proceedings of the 9th International Workshop on Persistent Object Systems, POS-9, held in Lillehammer, Norway, in September 2001. The 19 revised full papers presented together with seven session overviews and an epilogue were selected during two rounds of reviewing and revision for inclusion in the proceedings. Among the topics addressed are persistence-enabled optimization, Java applications, JVM, systems architecture, persistent GIS, data sharing middleware, polylingual persistence, transactions, distributed object systems, object stores, garbage collectors, WWW and persistence, persistent computation implementation, orthogonally persistent Java, and personal information devices.
Download or read book Global Value Chains in a Postcrisis World written by Olivier Cattaneo and published by World Bank Publications. This book was released on 2010 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book looks to address the following questions in a post-crisis world: How have lead firms responded to the crisis? Have they changed their traditional supply chain strategy and relocated and/or outsourced part of their production? How will those changes affect developing countries? What should be the policy responses to these changes?
Download or read book The Global Technology Revolution 2020 In Depth Analyses Bio Nano Materials Information Trends Drivers Barriers and Social Implications written by Richard Silberglitt and published by Rand Corporation. This book was released on 2002-08-30 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2020, areas of particular importance for technology trends will include biotechnology, nanotechnology, materials technology, and information technology. This report, the companion document to The Global Technology Revolution 2020, Executive Summary (Silberglitt et al., MG-475-NIC, 2006), assesses in detail a sample of 29 countries with respect to their ability to acquire and implement 16 key technology applications.
Download or read book Restoring Tropical Forests written by Stephen D. Elliott and published by Royal Botanic Gardens Kew. This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Restoring Tropical Forests is a user-friendly guide to restoring forests throughout the tropics. Based on the concepts, knowledge and innovative techniques developed at Chiang Mai University's Forest Restoration Research Unit, this book will enable improvements in existing forest restoration projects and provide a key resource for new ones. The book presents three aspects of the restoration of tropical forest ecosystems: the concepts of tropical forest dynamics and regeneration that are relevant to tropical forest restoration, proven restoration techniques and case studies of their successful application, and research methods to refine such techniques and adapt them to local ecological and socio-economic conditions.
