A power-efficient network on-chip topology pdf

The network onchip noc paradigm has been proposed as a revolutionary methodology to incorporate a great number of multiple cores of a given application into a single soc. As an improved topology is selected complexities decrease and power efficiency increases. For onchip networks, twodimensional 2d mesh is the most preferred topology choice due to its regularity. This work is designed to be a short synthesis of the most critical concepts in onchip network design. Abstract this paper introduces techniques for power efficient design of power delivery network in multiple voltageisland system on chip soc designs. The first technique is targeted to soc designs with static voltage assignment, while the second technique is pertinent to soc designs with dynamic voltage scaling capability. A networkon chip architecture for optimization of area and. Jan 11, 2017 dataflow architecture has shown its advantages in many highperformance computing cases. Highly configurable topology with network onchip properties for building highperformance, optimized, ambacompliant soc connectivity. Index terms virtual channel, noc, elastic buffer i. Poweraware topology optimization for networksonchips. Area overhead, power consumption, and noc performance is influenced by the router buffers.

A new topology for chip interconnection called torus connected rings is proposed. Network on chip design improves the scaling of modern chips by empowering them to integrate incr. Network on chip noc is the platform of interconnection platform and is requirements of the modern on chip design. Small optimizations in noc router architecture can show a significant improvement in the overall performance of noc based systems. Power efficient router architecture for wireless network onchip hemanta kumar mondal, sri harsha gade, raghav kishore, shashwat kaushik, sujay deb indraprastha institute of information technologydelhi, india email. The choice of a network topology for a networks onchip based application significantly impacts its power consumption. Luminoc a novel design for a powerefficient, performance oriented photonic networkonchip divya bhadrakumar1, anoop t. Network on chip architecture provides a way to design complex integrated circuits with an objective to reduce connection issues, design productivity, and energy utilization. Networks on chips an overview sciencedirect topics. A tool for networks on chip topology synthesis for 3d systems on chips. The processorhas 1024 cores organized into 16 groups. On chip networks seek to provide a scalable and highbandwidth communication substrate for multicore and manycore architectures. The network on chip noc design paradigm is seen as a way of enabling the integration of an exceedingly high number of computational and storage blocks in a single chip. The topologies play a major role in the area and network latency.

For regular topologies, some existing noc solutions assume a mesh architecture. Network onchipbased communication schemes represent a promising solution to the increasing complexity of systemonchip problems. Keywords nanophotonics, graphics processing unit gpu acm reference format. The noc architecture uses layered protocols and packetswitched networks which consist of on chip routers, links, and network interfaces on a predefined topology. Introduction the progress of vlsi technology allows resea rchers to design a complete system on a chip called system on chip soc. Dec 07, 2006 chungkuan cheng, communication latency aware low power noc synthesis through topology and wire style optimization pdf communication latency and power consumption are two competing objectives in networkonchip noc design. Analysis of network onchip topologies for costefficient chip multiprocessors. Power efficient router architecture for wireless network on chip hemanta kumar mondal, sri harsha gade, raghav kishore, shashwat kaushik, sujay deb indraprastha institute of information technologydelhi, india email. Abstractthis paper proposes an energyefficient networkon. Network on chip noc is a subset of soc which accomplishes on chip communication process.

Performance and thermal tradeoffs for energyefficient. Keywords network on chip noc, dynamic frequency scaling dfs, finite state machines fsm 1. Differences motivate some surprising differences from onchip networks. The topology of a network is the way in which routers. It is a resource for both understanding onchip network basics and for providing an overview of state oftheart research in onchip networks. A novel approach for an efficient network onchip using a modified fat tree is presented. An energyefficient networkonchip topology for constant. High bandwidth and low latency within the on chip network must be achieved while fitting within tight area and power budgets.

A low area overhead packetswitched network on chip. Analysis of networkonchip topologies for costefficient. A comparative study of different topologies for networkon. Abstract wireless networks on chip wnocs offer the most. Thesimul a tion results are superior to conventional work. This argues for hierarchical network topologies, such as the one shownin figure 1. Finally, onchip networks with regular topologies have short interconnects that can be optimized and reused using regular iterative blocks, thus making the verification process easy.

Osa powerefficient calibration and reconfiguration for. An efficient networkonchip architecture based on the fat. Although a complex soc can be viewed as a micronetwork of multiple standalone blocks, models and techniques from networking. A highperformance router will help build a highthroughput, power efficient, and lowlatency noc. This is a network on chip noc architecture enables the network topology to be reconfigured. A shortly connected mesh topology for high performance and. The system on chip soc design has few challenges, such as latency, power, area and reliable data transmission among subsystems interconnected on a single chip. A grid network connects the 16 groups and a grid topology is also employed within. Then, a bidirectional network onchip binoc architecture will be given in section 4. Both postfabrication and runtime calibration of the optical components ring resonators are essential to building a robust optical communication system, as they are highly sensitive to. There are cores that are connected to each other by means of a network by the name of interconnection network. In proceedings of the conference on design, automation and test in europe date09. Thus the router design has a significant impact on the performance of dataflow architecture.

Network on chip noc is the interconnection platform that answers the requirements of the modern on chip design. Designing an efficient network on chip noc interconnect for a 3d soc that. Monolithic 3denabled high performance and energy efficient network on chip. Contention is eliminated and latency is reduced through an improved topology and router architecture. A power efficient, oblivious, pathdiverse, minimal routing. Smallworld network enabled energy efficient and robust 3d noc architectures. Background network on chip noc is an emerging paradigm using packet switched networks for communications within large vlsi system on chip.

Network onchip noc has been recognized as an effective solution for complex onchip communication problems faced in systemonchips socs. The performance of noc architecture is significantly affected by power and area. A network on chip architecture for optimization of area and power with reconfigurable topology on cyclone ii specific device v. Highly configurable topology with network on chip properties for building highperformance. Experiments are carried out with a fullsystem simulator that carefully models the. The network on chip noc architecture enables the network topology to be reconfigured. Energy efficient networkonchip architectures for manycore near. In this letter, a new errorresilient router design for network on chips nocs is proposed to effectively address various transient errors considering power efficiency and implementation complexity. Topologies for onchip network are in two for 1 regular topology 2 irregular topology. However, with growing levels of integration, traditional nocs suffer from high latency and energy dissipation in on chip data transfer due to conventional multihop metaldielectricbased interconnects. R2, seema padmarajan3 1electronics and communication department, sree narayana gurukulam college of engineering, india 2electronics and communication department, sree narayana gurukulam college of engineering, india.

This paper proposes a power efficient, oblivious, pathdiverse, minimal routing popm for meshbased networksonchip. Introduction network on chips nocs provide a scalable communication infrastructure for architectures with huge numbers of process ing elements. Unified buffer powerefficient router for network onchip networks onchip nocs address many shortcomings of traditional interconnects. Guerrier and greiner 2000 a generic architecture for onchip packetswitched interconnections hemani et al.

However, the existing baseline router of a tripletbased noc topology cannot fully optimize the potential performance, because it does not consider. The key strength of this work is the holistic analysis of the network onchip and the memory hierarchy. Kashwan2 1department of electronics and communication engineering. In this work, a set of powerefficient calibration and. European design and automation association, belgium, 914. The modules on the ic are typically semiconductor ip cores schematizing various functions of the computer system, and are designed to be modular in.

Future directions for onchip interconnection networks. The network onchip noc design paradigm is seen as a way of enabling the integration of an exceedingly high number of computational and storage blocks in a single chip. The proposed noc switch reduces the power consumption of the butterfly fat tree bft architecture by 28 %. Power efficient router architecture for wireless networkonchip.

The adopted topology increases performance without a substantial increase in the routing cost. From implementations to programming paradigms provides a thorough and bottomup exploration of the whole noc design space in a coherent and uniform fashion, from lowlevel router, buffer and topology implementations, to routing and flow control schemes, to cooptimizations of noc and highlevel programming paradigms. The network on chip noc paradigm has emerged as a scalable interconnection infrastructure for modern massive multicore chips. Network on chip, power consumption, low power encoding, routing algorithm, topology. An efficient networkonchip router for dataflow architecture.

Summary of offchip networks topology fit to packaging and signaling technology. In proceedings of the ieee international conference on computer design iccd, boston, ma, 233240. There are several topology architectures, specially based on mesh and torus 2. This enables a general system on chip soc platform, which is currently running on the chip.

Multicasting based topology generation and core mapping for a power efficient networks on chip. Network onchip noc is a reliable and scalable communication paradigm deemed as an alternative to classic bus systems in modern systemsonchip designs. Network on chip is the term used to describe an architecture that has maintained readily designable solutions in face of communicationcentric trends. Design and evaluation of efficient router architecture for. Future directions for onchip interconnection networks william j. Power efficient photonic network onchip for a scalable gpu. Architecture for a powerefficient network on chip presents an all optical noc architecture with a novel topology and routing algorithm. Network on chip noc is a subset of soc which accomplishes onchip. Design and implementation of four port router for network on chip. Power and performanceefficient clusterbased networkon. Noc topologies to be configured, thus providing both efficiency and flexibility. Jun 24, 2019 design and implementation of four port router for network on chip written by raghav pakala, uma b v published on 20190624 download full article with reference data and citations.

Chip with communication delivers a strengthening solution to the rising complexity and problems in system. A power efficient and compact optical interconnect for. Design of adaptive communication channel buffers for low. Network on chip topology design is one of the significant factors that affect the net delay of the system. Nocs are poised to provide enhanced performance, scalability, modularity, and design. An efficient hardware implementation of dvfs in multicore. But on chip wireless interfaces wis have their own power and area overhead. Abstract wireless networks onchip wnocs offer the most. Network onchip noc is on a chip becomes a primary factor which limits the performance and power consumption. Powerefficient errorresilient networkonchip router using. Ntc systems, we propose boostnoca power efficient, multilayered network onchip architecture. Network performance of a network is calculated by various factors but. Network on chip noc has been recognized as an effective solution for complex on chip communication problems faced in system on chips socs.

The primary aim of this paper is to explore a poweref. Power efficient photonic networkonchip for a scalable gpu. The architecture of networks on chip noc highly affects the overall performance of the system on chip soc. You can create an elegant regular topology but asicsare often irregular. The papers comprising this special issue on noc were first presented in shorter forms at nocs 2011, the fifth acmieee international symposium on networksonchip, held in 2011 in pittsburgh, pennsylvania. Area and power efficient network on chip router architecture. A low power switch design is proposed to achieve powerefficient network on chip noc.

Powerefficient calibration and reconfiguration for. Comparative analysis of different topologies based on network on chip architectures 72 ii. In this paper, we propose a new methodology to reduce the total power. Scribd is the worlds largest social reading and publishing site. Onchip networks synthesis lectures on computer architecture. Stacking multiple active layers manufacturability mismatch between various layers yield is an issue. Jul 27, 20 a network on chip noc router serves an important function in network communication performance. Topology is widely known as the most important characteristic of networks onchip noc, since it highly affects overall network performance, cost, and power consumption. Introduction o solve the problem of the traditional bus in the area interconnect scaling and power consumption, etc. Compared to traditional bus based systems, a network. Resource sharing for on chip network is critical to reduce the chip area and power consumption. Currently, network onchip technology is widely used as an interconnection technology in multicore systems in which a large number of ips are integrated, and is gradually replacing the existing bus technology.

Ravikiran me, vlsi design, bangalore, india abstract. We use binaryweight snn bwsnn to simplify the operations and minimize the onchip storage. Powerefficient calibration and reconfiguration for optical. Network topologies topology physical and logical network layout physical actual layout of the computer cables and other network devices logical the way in which the network appears to the devices that use it. We can have an application with significant amount of locality of.

Area and power efficient router design for network on chip. Common routers are designed for controlflow multicore architecture and we find. Here, mesh topology is shortly connected, utilizing the symmetric properties of the network, and is introduced. Network on chip router with power management unit for. In this paper, we propose a reconfigurable architecture and design flow for nocs on which a customized topology for any target application can be implemented. Indian journal of science and technology, vol 812, doi. Multicasting based topology generation and core mapping for a. In this paper we investigate the topology synthesis approach for on chip interconnect network. Network topologies michigan technological university. Network on chip based communication schemes represent a promising solution to the increasing complexity of system on chip problems.

Pdf design of efficient router with low power and low latency. Recently, network on chip noc architectures are emerging as a candidate for the highly scalable, reliable, and modular on chip communication infrastructure platform 11. Chip noc topology called zmesh, which is targeted towards the class of constantgeometry. Dally computer systems laboratory stanford university. Design and analysis of application specific network on. In this paper, we have investigated scope for extending 2d topologies for 3d. As the switch speed of crossbar switch increases rapidly, on big problem we should a new method for on chip communication to solve the problem that challenges the system on chip. In order to improve the performance of the network, popm makes routing decisions locally at each hop rather than establishing a fixed and deterministic path between the source and destination nodes. The demand for faster processors having high processing capability over area ratio is increasing.

A powerefficient hierarchical networkonchip topology. Evaluated on a cycleaccurate onchip network simulator simulated 8 x 8 mesh and 8 x 8 folded torus topologies synthetic benchmarks such as uniform, and nonuniform workloads butterfly, complement, perfect shuffle, matrix transpose, bit reversal were evaluated parameters evaluated include throughput, latency and overall network. Topics include network topologies, crossbar switches, and message. The topology is configured using energy efficient topology switches based on physical circuitswitching the. In dataflow computing, a large amount of data are frequently transferred among processing elements through the network on chip noc. In this paper mesh topology and torus topology are compared in terms of network delay for a given noc application using xillinc 9. Regular forms of topologies are widely used for noc. Peng zhang, in advanced industrial control technology, 2010 2 network on chip for multicore processors. Luminoc a novel design for a powerefficient, performance. The on chip network routers and links should be highly power efficient and occupy low area. A powerefficient hierarchical networkonchip topology for. Recent research and industrial prototypes have validated that about 10%36% 3,10,26 of total chip power is consumed by noc. Onchip networks, second edition synthesis lectures on.

A scalable, energy efficient on chip interconnect network is needed to address these difficulties in order to facilitate the on chip communication. Keywords network on chip, router, power management, voltage scaling, frequency scaling, clock gating, power gating i. Pdf performance analysis of networkonchip topologies. Optimal design of the power delivery network for multiple. The simulated results of new architecture have shown a. The use of nocs in socs has been a gradual process, with the interconnects evolving from single bus structures to multiple buses with bridges, crossbars and a packetswitching network. Although standard topologies can easily be implemented and also ensure the regularity of the onchip network, they might not be the best choice for applicationspecific network onchip asnoc due to mismatch between the topology and the application characteristics. Also, this proposed work is evaluated for various performance parameters and compared with conventional work. In this paper we design and implement a dynamic voltage frequency scaling dvfs technique and extend it to provide power gating to the wis. In this paper, we propose a new meshlike topology called the shortly connected mesh technology scmesh, which is based on the traditional mesh topology, to exploit the graph symmetry properties of interconnection networks.

Network on chip noc is a reliable and scalable communication paradigm deemed as an alternative to classic bus systems in modern systems on chip designs. International journal of computer applications 0975 8887 recent trends in engineering technology20 27 a comparative study of different topologies for network onchip architecture sonal s. Powerefficient processor, designed for a wide range of devices with differing requirements demanding balance between power and performance. Power efficient router architecture for wireless network. In this paper, the main research field in network on chip design focussing on optimized topology design is analyzed. We propose a novel method that unifies these two objectives in a multicommodity flow mcf formulation. Recent advances in nanophotonic fabrication have made the optical network on chip an attractive interconnect option for nextgeneration multimanycore systems, providing high bandwidth and power efficiency. Exploring alternative topologies for networkonchip. Network on chip wnoc significantly improves the latency over traditional wired nocs for multicore systems. Comparative analysis of different topologies based on network. Due to the presence of multiple disjoint paths between. Low power 2d mesh networkonchip router using clock gating. Pdf an efficient networkonchip architecture based on.