A power-efficient network on-chip topology pdf

Luminoc a novel design for a powerefficient, performance oriented photonic networkonchip divya bhadrakumar1, anoop t. Comparative analysis of different topologies based on network on chip architectures 72 ii. On chip networks seek to provide a scalable and highbandwidth communication substrate for multicore and manycore architectures. Kashwan2 1department of electronics and communication engineering. A comparative study of different topologies for networkon. 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. Topology is widely known as the most important characteristic of networks onchip noc, since it highly affects overall network performance, cost, and power consumption. It is a resource for both understanding onchip network basics and for providing an overview of state oftheart research in onchip networks. Small optimizations in noc router architecture can show a significant improvement in the overall performance of noc based systems.

An energyefficient networkonchip topology for constant. Design of adaptive communication channel buffers for low. 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 proposed noc switch reduces the power consumption of the butterfly fat tree bft architecture by 28 %. Differences motivate some surprising differences from onchip networks. Abstract this paper introduces techniques for power efficient design of power delivery network in multiple voltageisland system on chip soc designs. Abstract wireless networks onchip wnocs offer the most. Introduction the progress of vlsi technology allows resea rchers to design a complete system on a chip called system on chip soc. This work is designed to be a short synthesis of the most critical concepts in onchip network design. Smallworld network enabled energy efficient and robust 3d noc architectures. Network on chip topology design is one of the significant factors that affect the net delay of the system.

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. Network on chip wnoc significantly improves the latency over traditional wired nocs for multicore systems. Monolithic 3denabled high performance and energy efficient network on chip. In proceedings of the conference on design, automation and test in europe date09. Introduction network on chips nocs provide a scalable communication infrastructure for architectures with huge numbers of process ing elements. This is a network on chip noc architecture enables the network topology to be reconfigured. Network on chip noc is a subset of soc which accomplishes onchip. Thesimul a tion results are superior to conventional work.

Background network on chip noc is an emerging paradigm using packet switched networks for communications within large vlsi system on chip. In this paper we design and implement a dynamic voltage frequency scaling dvfs technique and extend it to provide power gating to the wis. Area overhead, power consumption, and noc performance is influenced by the router buffers. You can create an elegant regular topology but asicsare often irregular.

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. Due to the presence of multiple disjoint paths between. 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. Network onchip noc is a reliable and scalable communication paradigm deemed as an alternative to classic bus systems in modern systemsonchip designs. The performance of noc architecture is significantly affected by power and area. Keywords network on chip, router, power management, voltage scaling, frequency scaling, clock gating, power gating i. Exploring alternative topologies for networkonchip. A power efficient, oblivious, pathdiverse, minimal routing. Highly configurable topology with network on chip properties for building highperformance. 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.

Jul 27, 20 a network on chip noc router serves an important function in network communication performance. The architecture of networks on chip noc highly affects the overall performance of the system on chip soc. The key strength of this work is the holistic analysis of the network onchip and the memory hierarchy. Unified buffer powerefficient router for network onchip networks onchip nocs address many shortcomings of traditional interconnects. Network on chip noc is the platform of interconnection platform and is requirements of the modern on chip design. Regular forms of topologies are widely used for noc. 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. Experiments are carried out with a fullsystem simulator that carefully models the.

In this paper mesh topology and torus topology are compared in terms of network delay for a given noc application using xillinc 9. Pdf an efficient networkonchip architecture based on. Future directions for onchip interconnection networks. Multicasting based topology generation and core mapping for a power efficient networks on chip. For onchip networks, twodimensional 2d mesh is the most preferred topology choice due to its regularity. 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. A grid network connects the 16 groups and a grid topology is also employed within. 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. Power efficient router architecture for wireless networkonchip. 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. Design and evaluation of efficient router architecture for. 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. A low area overhead packetswitched network on chip.

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. 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. Although a complex soc can be viewed as a micronetwork of multiple standalone blocks, models and techniques from networking. A power efficient and compact optical interconnect for. Network onchip noc has been recognized as an effective solution for complex onchip communication problems faced in systemonchips socs. Recent research and industrial prototypes have validated that about 10%36% 3,10,26 of total chip power is consumed by noc. High bandwidth and low latency within the on chip network must be achieved while fitting within tight area and power budgets. European design and automation association, belgium, 914. Summary of offchip networks topology fit to packaging and signaling technology.

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. Powerefficient processor, designed for a wide range of devices with differing requirements demanding balance between power and performance. This paper proposes a power efficient, oblivious, pathdiverse, minimal routing popm for meshbased networksonchip. The network on chip noc paradigm has emerged as a scalable interconnection infrastructure for modern massive multicore chips. Analysis of networkonchip topologies for costefficient. Area and power efficient network on chip router architecture. Network on chip architecture provides a way to design complex integrated circuits with an objective to reduce connection issues, design productivity, and energy utilization.

We propose a novel method that unifies these two objectives in a multicommodity flow mcf formulation. Comparative analysis of different topologies based on network. However, the existing baseline router of a tripletbased noc topology cannot fully optimize the potential performance, because it does not consider. Chip with communication delivers a strengthening solution to the rising complexity and problems in system. Keywords network on chip noc, dynamic frequency scaling dfs, finite state machines fsm 1. An efficient hardware implementation of dvfs in multicore. Jan 11, 2017 dataflow architecture has shown its advantages in many highperformance computing cases. Future directions for onchip interconnection networks william j. Poweraware topology optimization for networksonchips. The network on chip noc architecture enables the network topology to be reconfigured. Luminoc a novel design for a powerefficient, performance. The simulated results of new architecture have shown a. The noc architecture uses layered protocols and packetswitched networks which consist of on chip routers, links, and network interfaces on a predefined topology.

Dally computer systems laboratory stanford university. 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. The adopted topology increases performance without a substantial increase in the routing cost. There are several topology architectures, specially based on mesh and torus 2. Contention is eliminated and latency is reduced through an improved topology and router architecture. The modules on the ic are typically semiconductor ip cores schematizing various functions of the computer system, and are designed to be modular in. 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. Nocs are poised to provide enhanced performance, scalability, modularity, and design. The processorhas 1024 cores organized into 16 groups. Stacking multiple active layers manufacturability mismatch between various layers yield is an issue. Abstractthis paper proposes an energyefficient networkon. Noc topologies to be configured, thus providing both efficiency and flexibility. As an improved topology is selected complexities decrease and power efficiency increases. Compared to traditional bus based systems, a network.

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. Pdf performance analysis of networkonchip topologies. Keywords nanophotonics, graphics processing unit gpu acm reference format. The primary aim of this paper is to explore a poweref. Performance and thermal tradeoffs for energyefficient. An efficient networkonchip router for dataflow architecture. 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 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. There are cores that are connected to each other by means of a network by the name of interconnection network. Indian journal of science and technology, vol 812, doi.

Low power 2d mesh networkonchip router using clock gating. The on chip network routers and links should be highly power efficient and occupy low area. Designing an efficient network on chip noc interconnect for a 3d soc that. Powerefficient calibration and reconfiguration for. For regular topologies, some existing noc solutions assume a mesh architecture. A novel approach for an efficient network onchip using a modified fat tree is presented. In this paper we investigate the topology synthesis approach for on chip interconnect network. Power efficient photonic network onchip for a scalable gpu.

Ravikiran me, vlsi design, bangalore, india abstract. 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. An efficient networkonchip architecture based on the fat. In proceedings of the ieee international conference on computer design iccd, boston, ma, 233240.

Network on chip router with power management unit for. Topics include network topologies, crossbar switches, and message. Osa powerefficient calibration and reconfiguration for. A network on chip architecture for optimization of area and power with reconfigurable topology on cyclone ii specific device v. 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. The choice of a network topology for a networks onchip based application significantly impacts its power consumption. A powerefficient hierarchical networkonchip topology for. Onchip networks synthesis lectures on computer architecture. Networks on chips an overview sciencedirect topics. A low power switch design is proposed to achieve powerefficient network on chip noc. Topologies for onchip network are in two for 1 regular topology 2 irregular topology. Resource sharing for on chip network is critical to reduce the chip area and power consumption.

Area and power efficient router design for network on chip. Chip noc topology called zmesh, which is targeted towards the class of constantgeometry. Network onchipbased communication schemes represent a promising solution to the increasing complexity of systemonchip problems. Network on chip is the term used to describe an architecture that has maintained readily designable solutions in face of communicationcentric trends. The topology of a network is the way in which routers. This argues for hierarchical network topologies, such as the one shownin figure 1. Peng zhang, in advanced industrial control technology, 2010 2 network on chip for multicore processors. Multicasting based topology generation and core mapping for a. Highly configurable topology with network onchip properties for building highperformance, optimized, ambacompliant soc connectivity.

Power and performanceefficient clusterbased networkon. Power efficient router architecture for wireless network. Network on chip design improves the scaling of modern chips by empowering them to integrate incr. Power efficient photonic networkonchip for a scalable gpu. Guerrier and greiner 2000 a generic architecture for onchip packetswitched interconnections hemani et al. A shortly connected mesh topology for high performance and. Network on chip noc has been recognized as an effective solution for complex on chip communication problems faced in system on chips socs. 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. Then, a bidirectional network onchip binoc architecture will be given in section 4. But on chip wireless interfaces wis have their own power and area overhead. The demand for faster processors having high processing capability over area ratio is increasing.

The topology is configured using energy efficient topology switches based on physical circuitswitching the. Network on chip based communication schemes represent a promising solution to the increasing complexity of system on chip problems. A new topology for chip interconnection called torus connected rings is proposed. In this paper, we propose a new methodology to reduce the total power. In this work, a set of powerefficient calibration and. In this paper, we have investigated scope for extending 2d topologies for 3d. Onchip networks, second edition synthesis lectures on. 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. Also, this proposed work is evaluated for various performance parameters and compared with conventional work. A networkon chip architecture for optimization of area and. In dataflow computing, a large amount of data are frequently transferred among processing elements through the network on chip noc. The topologies play a major role in the area and network latency.

A powerefficient hierarchical networkonchip topology. Powerefficient calibration and reconfiguration for optical. Abstract wireless networks on chip wnocs offer the most. Network performance of a network is calculated by various factors but. Network on chip, power consumption, low power encoding, routing algorithm, topology. Recently, network on chip noc architectures are emerging as a candidate for the highly scalable, reliable, and modular on chip communication infrastructure platform 11. 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. Architecture for a powerefficient network on chip presents an all optical noc architecture with a novel topology and routing algorithm. Ntc systems, we propose boostnoca power efficient, multilayered network onchip architecture. Energy efficient networkonchip architectures for manycore near. Network onchip noc is on a chip becomes a primary factor which limits the performance and power consumption.

Optimal design of the power delivery network for multiple. Index terms virtual channel, noc, elastic buffer i. A highperformance router will help build a highthroughput, power efficient, and lowlatency noc. Here, mesh topology is shortly connected, utilizing the symmetric properties of the network, and is introduced. This enables a general system on chip soc platform, which is currently running on the chip. Common routers are designed for controlflow multicore architecture and we find. Thus the router design has a significant impact on the performance of dataflow architecture. Analysis of network onchip topologies for costefficient chip multiprocessors.

A scalable, energy efficient on chip interconnect network is needed to address these difficulties in order to facilitate the on chip communication. 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. Scribd is the worlds largest social reading and publishing site. Network on chip noc is the interconnection platform that answers the requirements of the modern on chip design. Design and implementation of four port router for network on chip. Powerefficient errorresilient networkonchip router using. Design and analysis of application specific network on. We use binaryweight snn bwsnn to simplify the operations and minimize the onchip storage. Network topologies michigan technological university. 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.