Download or read book On chip Optical Interconnects for Chip Multiprocessors written by Nevin Kirman and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation, we address the on-chip cross-core and -memory interconnection problem facing future large-scale chip multiprocessors (CMPs) through the use of silicon optical technology. CMOS-compatible silicon photonics is a disruptive technology that can potentially enable high-bandwidth, low-latency, and low-power interconnect solutions for both off- and on-chip data communication. Although the technology is still in its formative stages, and the more near-term application is chip-to-chip communication, rapid advances have been made in the development of on-chip optical interconnects and devices. We first investigate the potential of optical technology to construct a lowlatency, high-bandwidth shared bus supporting snoopy cache coherence in future CMPs. While not exhaustive, our initial investigation yields a hierarchical opto-electrical system that exploits the advantages of optical technology while abiding by projected limitations. Our evaluation shows that, compared to an aggressive all-electrical bus of similar power and area, significant performance improvements can be achieved using an opto-electrical bus. This performance improvement is largely dependent on the number of implemented wavelengths per waveguide. We further improve on the data network. We present an all-optical approach to constructing data networks on chip that combines the following key features: (1) Wavelength-based routing, where the route followed by a packet depends solely on the wavelength of its carrier signal, and not on information either con- tained in the packet or traveling along with it. (2) Oblivious routing, by which the wavelength (and thus the route) employed to connect a source-destination pair is invariant for that pair, and does not depend on ongoing transmissions by other nodes, thereby simplifying design and operation. And (3) passive optical wavelength routers, whose routing pattern is set at design time, which allows for area and power optimizations not generally available to solutions that use dynamic routing. We construct such an all-optical network and propose a connection-based operation. Our evaluation shows that our approach is competitive with prior proposals from the performance standpoint, yet it yields significantly more power-efficient designs.

Download or read book Photonic Interconnects for Computing Systems written by Mahdi Nikdast and published by River Publishers. This book was released on 2017 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photonic Interconnects for Computing Systems provides a comprehensive overview of the current state-of-the-art technology and research achievements in employing silicon photonics for interconnection networks and high-performance computing, summarizing main opportunities and some challenges.

Download or read book Integrated Optical Interconnect Architectures for Embedded Systems written by Ian O'Connor and published by Springer Science & Business Media. This book was released on 2012-11-07 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a broad overview of current research in optical interconnect technologies and architectures. Introductory chapters on high-performance computing and the associated issues in conventional interconnect architectures, and on the fundamental building blocks for integrated optical interconnect, provide the foundations for the bulk of the book which brings together leading experts in the field of optical interconnect architectures for data communication. Particular emphasis is given to the ways in which the photonic components are assembled into architectures to address the needs of data-intensive on-chip communication, and to the performance evaluation of such architectures for specific applications.

Download or read book Optical Interconnections and Parallel Processing written by Pascal Berthome and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical media are now widely used in the telecommunication networks, and the evolution of optical and optoelectronic technologies tends to show that their wide range of techniques could be successfully introduced in shorter-distance interconnection systems. This book bridges the existing gap between research in optical interconnects and research in high-performance computing and communication systems, of which parallel processing is just an example. It also provides a more comprehensive understanding of the advantages and limitations of optics as applied to high-speed communications. Audience: The book will be a vital resource for researchers and graduate students of optical interconnects, computer architectures and high-performance computing and communication systems who wish to understand the trends in the newest technologies, models and communication issues in the field.

Download or read book Design of Optical Interconnect Transceiver Circuits and Network on chip Architectures for Inter and Intra chip Communication written by Cheng Li and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The rapid expansion in data communication due to the increased multimedia applications and cloud computing services necessitates improvements in optical transceiver circuitry power efficiency as these systems scale well past 10 Gb/s. In order to meet these requirements, a 26 GHz transimpedance amplifier (TIA) is presented in a 0.25-[pico]m SiGeBiCMOS technology. It employs a transformer-based regulated cascode (RGC) input stage which provides passive negative-feedback gain that enhances the effective transconductance of the TIA's input common-base transistor; reducing the input resistance and providing considerable bandwidth extension without significant noise degradation or power consumption. The TIA achieves a 53 dB[U] single-ended transimpedance gain with a 26 GHz bandwidth and 21.3 pA [divided by the square root of Hz] average input-referred noise current spectral density. Total chip power including output buffering is 28.2 mW from a 2.5 V supply, with the core TIA consuming 8.2 mW, and the chip area including pads is 960 [pico]m x 780 [pico]m. With the advance of photonic devices, optical interconnects becomes a promising technology to replace the conventional electrical channels for the high-bandwidth and power efficient inter/intra-chip interconnect. Second, a silicon photonic transceiver is presented for a silicon ring resonator-based optical interconnect architecture in a 1V standard 65nm CMOS technology. The transmitter circuits incorporate high-swing drivers with non-linear pre-emphasis and automatic bias-based tuning for resonance wavelength stabilization. An optical forwarded-clock adaptive inverter-based transimpedance amplifier (TIA) receiver trades-off power for varying link budgets by employing an on-die eye monitor and scaling the TIA supply for the required sensitivity. At 5 GB/s operation, the ring modulator under 4Vpp driver achieves 12.7dB extinction ratio with 4.04mW power consumption, while a 0.28nm tuning range is obtained at 6.8[pico]W/GHz efficiency with the bias-based tuning scheme implemented with the 2Vpp transmitter. When tested with a wire-bonded 150f- F p-i-n photodetector, the receiver achieves -12.7dBm sensitivity at a BER=10-15 and consumes 2.2mW at 8 GB/s. Third, a novel Nano-Photonic Network-on-Chip (NoC) architecture, called LumiNoC, is proposed for high performance and power-efficient interconnects for the chip-multi- processors (CMPs). A 64-node LumiNoC under synthetic traffic enjoys 50% less latency at low loads versus other reported photonic NoCs, and ~25% less latency versus the electrical 2D mesh NoCs on realistic workloads. Under the same ideal throughput, LumiNoC achieves laser power reduction of 78%, and overall power reduction of 44% versus competing designs. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/151949

Download or read book Optical Interconnects for Data Centers written by Tolga Tekin and published by Woodhead Publishing. This book was released on 2016-11-01 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current data centre networks, based on electronic packet switches, are experiencing an exponential increase in network traffic due to developments such as cloud computing. Optical interconnects have emerged as a promising alternative offering high throughput and reduced power consumption. Optical Interconnects for Data Centers reviews key developments in the use of optical interconnects in data centres and the current state of the art in transforming this technology into a reality. The book discusses developments in optical materials and components (such as single and multi-mode waveguides), circuit boards and ways the technology can be deployed in data centres. Optical Interconnects for Data Centers is a key reference text for electronics designers, optical engineers, communications engineers and R&D managers working in the communications and electronics industries as well as postgraduate researchers. - Summarizes the state-of-the-art in this emerging field - Presents a comprehensive review of all the key aspects of deploying optical interconnects in data centers, from materials and components, to circuit boards and methods for integration - Contains contributions that are drawn from leading international experts on the topic

Download or read book System Synthesis for Optically Connected Multiprocessors On Chip written by and published by . This book was released on 2006 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical interconnects are being considered as a possible solution to the well known problems of scaling in VLSI interconnects. Along with enabling higher speed interconnects, optics allows the construction of highly connected and irregular networks that are streamlined for particular applications. Using these networks, it is possible to implement application mappings that allow flexible, single-hop communication patterns between processors. This has advantages for reduced system latency and power. Such optically connected multiprocessors are particularly promising for embedded digital signal processing (DSP) applications, which are highly parallel, and typically have tight constraints on latency and power consumption. This paper addresses novel trade-offs involving communication routing flexibility, power consumption, and performance that arise in the context of system synthesis of optically-interconnected multiprocessors. We report on experimental results that expose these trade-offs, and propose systematic techniques to address them efficiently. We demonstrate the performance of these techniques on several benchmark examples.

Download or read book Photonic Network on Chip Design written by Keren Bergman and published by Springer Science & Business Media. This book was released on 2013-08-13 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive synthesis of the theory and practice of photonic devices for networks-on-chip. It outlines the issues in designing photonic network-on-chip architectures for future many-core high performance chip multiprocessors. The discussion is built from the bottom up: starting with the design and implementation of key photonic devices and building blocks, reviewing networking and network-on-chip theory and existing research, and finishing with describing various architectures, their characteristics, and the impact they will have on a computing system. After acquainting the reader with all the issues in the design space, the discussion concludes with design automation techniques, supplemented by provided software.

Download or read book Optical Fiber Telecommunications VIA written by Jason Orcutt and published by Elsevier Inc. Chapters. This book was released on 2013-05-03 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: This chapter introduces optical interconnects as a possible solution to the emerging performance wall in high-density supercomputer applications, arising from limited bandwidth and density of on-chip interconnects and chip-to-chip (processor-to-memory) electrical interfaces. The chapter focuses on the translation of system and link level performance metrics to photonic component requirements. The topics to be developed include the network topology, photonic link components, circuit and system design for photonic links.

Download or read book Optical Interconnects written by Ray T. Chen and published by Morgan & Claypool Publishers. This book was released on 2007 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes fully embedded board level optical interconnect in detail including the fabrication of the thin-film VCSEL array, its characterization, thermal management, the fabrication of optical interconnection layer, and the integration of devices on a flexible waveguide film. All the optical components are buried within electrical PCB layers in a fully embedded board level optical interconnect. Therefore, we can save foot prints on the top real estate of the PCB and relieve packaging difficulty reduced by separating fabrication processes. To realize fully embedded board level optical interconnects, many stumbling blocks need to be addressed such as thin-film transmitter and detector, thermal management, process compatibility, reliability, cost effective fabrication process, and easy integration. The material presented eventually will relieve such concerns and make the integration of optical interconnection highly feasible. The hybrid integration of the optical interconnection layer and electrical layers is ongoing.

Download or read book Photonic Interconnects for Computing Systems written by Gabriela Nicolescu and published by CRC Press. This book was released on 2022-09-01 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, there has been a considerable amount of effort, both in industry and academia, focusing on the design, implementation, performance analysis, evaluation and prediction of silicon photonic interconnects for inter- and intra-chip communication, paving the way for the design and dimensioning of the next and future generation of high-performance computing systems. Photonic Interconnects for Computing Systems provides a comprehensive overview of the current state-of-the-art technology and research achievements in employing silicon photonics for interconnection networks and high-performance computing, summarizing main opportunities and some challenges. The majority of the chapters were collected from presentations made at the International Workshop on Optical/Photonic Interconnects for Computing Systems (OPTICS) held over the past two years. The workshop invites internationally recognized speakers on the range of topics relevant to silicon photonics and computing systems. Technical topics discussed in the book include:Design and Implementation of Chip-Scale Photonic Interconnects;Developing Design Automation Solutions for Chip-Scale Photonic Interconnects;Design Space Exploration in Chip-Scale Photonic Interconnects;Thermal Analysis and Modeling in Photonic Interconnects;Design for Reliability;Fabrication Non-Uniformity in Photonic Interconnects;Photonic Interconnects for Computing Systems presents a compilation of outstanding contributions from leading research groups in the field. It presents a comprehensive overview of the design, advantages, challenges, and requirements of photonic interconnects for computing systems. The selected contributions present important discussions and approaches related to the design and development of novel photonic interconnect architectures, as well as various design solutions to improve the performance of such systems while considering different challenges. The book is ideal for personnel in computer/photonic industries as well as academic staff and master/graduate students in computer science and engineering, electronic engineering, electrical engineering and photonics.

Download or read book CMOS compatible On chip Optical Interconnects written by Robert Elliott Pownall and published by . This book was released on 2009 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Parallel Computer Architecture written by David Culler and published by Gulf Professional Publishing. This book was released on 1999 with total page 1056 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book outlines a set of issues that are critical to all of parallel architecture--communication latency, communication bandwidth, and coordination of cooperative work (across modern designs). It describes the set of techniques available in hardware and in software to address each issues and explore how the various techniques interact.

Download or read book On Chip Communication Architectures written by Sudeep Pasricha and published by Morgan Kaufmann. This book was released on 2010-07-28 with total page 541 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past decade, system-on-chip (SoC) designs have evolved to address the ever increasing complexity of applications, fueled by the era of digital convergence. Improvements in process technology have effectively shrunk board-level components so they can be integrated on a single chip. New on-chip communication architectures have been designed to support all inter-component communication in a SoC design. These communication architecture fabrics have a critical impact on the power consumption, performance, cost and design cycle time of modern SoC designs. As application complexity strains the communication backbone of SoC designs, academic and industrial R&D efforts and dollars are increasingly focused on communication architecture design. On-Chip Communication Architecures is a comprehensive reference on concepts, research and trends in on-chip communication architecture design. It will provide readers with a comprehensive survey, not available elsewhere, of all current standards for on-chip communication architectures. - A definitive guide to on-chip communication architectures, explaining key concepts, surveying research efforts and predicting future trends - Detailed analysis of all popular standards for on-chip communication architectures - Comprehensive survey of all research on communication architectures, covering a wide range of topics relevant to this area, spanning the past several years, and up to date with the most current research efforts - Future trends that with have a significant impact on research and design of communication architectures over the next several years

Download or read book Embedded Machine Learning for Cyber Physical IoT and Edge Computing written by Sudeep Pasricha and published by Springer Nature. This book was released on 2023-11-01 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents recent advances towards the goal of enabling efficient implementation of machine learning models on resource-constrained systems, covering different application domains. The focus is on presenting interesting and new use cases of applying machine learning to innovative application domains, exploring the efficient hardware design of efficient machine learning accelerators, memory optimization techniques, illustrating model compression and neural architecture search techniques for energy-efficient and fast execution on resource-constrained hardware platforms, and understanding hardware-software codesign techniques for achieving even greater energy, reliability, and performance benefits.

Download or read book Optical Fiber Telecommunications VIA written by Nikos Bamiedakis and published by Elsevier Inc. Chapters. This book was released on 2013-05-03 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical interconnection technologies are increasingly deployed in high-performance electronic systems to address challenges in connectivity, size, bandwidth, latency, and cost. Projected performance requirements are leading to formidable cost and energy efficiency challenges. Hybrid and integrated photonic technologies are currently being developed to reduce assembly complexity and to reduce the numbers of individually packaged parts. This chapter provides an overview of the important challenges that photonics currently face, identifies the various optical technologies that are being considered for use at the different interconnection levels, and presents examples of demonstrated state-of-the-art optical interconnection systems. Finally, the prospects and potential of these technologies in the near future are discussed.

Download or read book Toward an Ultra low Energy CMOS compatible Electro optical Modulator for On chip Optical Interconnects written by Sean P. Anderson and published by . This book was released on 2011 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The continually increasing speed of microprocessors over the past forty years has been due in large part to miniaturization. The smaller a transistor is made, the faster it can run, and the more can be packed onto a chip. More recently, the performance of the electrical interconnects, which are responsible for transporting data within the microprocessor and between the microprocessor and memory, has been unable to keep pace. As the interconnect is scaled down along with the transistors, its bandwidth decreases and its latency and power consumption increase. This not only decreases the bandwidth of the interconnect, but also increases both its latency and power consumption. Optical interconnects can directly address these problems by replacing electrical interconnects at the system level. In this work we outline the requirements for a successful optical interconnect, and show that the photonic crystal platform is ideal for optical interconnects. Specifically, we show how photonic crystals can be used to build one of the most basic components of an optical interconnect: the electro-optic modulator, which converts an electrical signal into the optical domain. We will first discuss the potential of photonic crystal slow light for modulation, and then introduce a new multi-channel slow light platform for improved bandwidth. Next we describe the design of a photonic crystal resonator that is embedded entirely in silicon dioxide, which is a fundamental requirement for chip compatibility. This resonator uses a graded cavity design and has a quality factor as high as 300,000. It can be coupled to standard strip waveguides, facilitating the integration of photonic crystal devices with other photonic devices. We will also describe a simplified model of photonic crystal line-defect cavities that can aid in their design. Finally, we propose a design for a low-energy electro-optic modulator based on this graded cavity. Due to the extremely small mode volume possible with photonic crystal resonators, the active region can be on the order of a single cubic wavelength in size. By optimizing a number of parameters, a theoretical switching energy as low as 1 fJ/ bit is possible using this design."--Leaves viii-ix.