Reducing energy consumption by using data encoding techniques. Oct 07, 2016 data encoding techniques for reducing energy consumption in network on chip. In this paper we are discussed about a set of data encoding and decoding schemes at goal of reduce the power. Data encoding techniques for reducing energy consumption in network onchip. Previous research on routing techniques for noc has focused on the improvement of output selection. Reducing energy consumption by using data encoding. To analyze the power consumption of an noc router, a set of synthesized routers are modeled in vhdl. The substantial silicon density in 3d vlsi, albeit its numerous advantages, introduces serious thermal threats that would lead to faults and system failures. This encoding method uses ldpc encoding for reducing the transition activity in noc. In the first category, encoding techniques to concentrate the lowering power due to selfswitching activity of individual bus lines while ignoring to the power dissipation in their coupling switching activity. Minimizing power consumption of spatial division based.
Noc overcomes traditional system on chip soc problems. Unlike soc, network onchip noc has so many advantages for data transfer. Networkonchip noc an example of a meshbased networkonchip core 1 router router router 32 core 2 core 10 core 5 router core 4 router core 6 router core 3 router core router core router core 7 router 8 router 9 router advanced reliable systems ares lab. The dynamic energy consumption of the multicore onchip data bus is more and more large in the whole system energy consumption. Optimization of energy consumption in a noc link by using. Optimizing data encoding schemes to reducing energy consumption in network on chip jeeva anusha1, dr. Transmission energy is minimized by serialized low energy transmission coding on the serial interconnect by using data correlation properties that might be compromised during serialization. Network on chip advantages structured architecture lower complexity and cost of soc design reuse of components, architectures, design methods and tools efficient and high performance interconnect. Implementation of data encoding and decoding architecture. Selfcalibrated energyefficient and reliable channels for. Ppt networksonchip powerpoint presentation free to. Network on chip helps to reduce soc manufacturing cost, increase. Runtime dynamic programming network dpn is proposed to optimize routing directions and provide silicon. Home 2014 data encoding techniques for reducing energy consumption in network on chip data encoding techniques for reducing energy consumption in network on chip.
The power dissipated by the links of a network on chip. Data encoding techniques for reducing energy consumption in network on chip quantity add to cart categories. Semiconductor technology and computer architecture has provided the necessary infrastructure on top of which every computer system has been developed offering high performance for computationallyintensive applications and. Based on the number of citations, it seems that reference 4 below might be the one, even though some older references had already discussed the concept. A n efficient low power ldpc method for networkonchip. Index termscoupling switching activity, data encoding, interconnection on chip, low power, network onchip noc, power analysis.
In this, we present a conventionaldata encoding schemes meant to reducing. Data encoding technique for reducing energy consumption noc. The dynamic energy consumption of the multicore on chip data bus is more and more large in the whole system energy consumption. Veeraiah chowdary associate professor department of ece vijaya engineering college, ammapalem, thanikella m. Data correlation aware serial encoding for low switching. This requires an energy model for various system components. Data encoding techniques for lower power dissipation in. New chip reduces neural networks power consumption by up to. Reducing networkonchip energy consumption through data. The data encoding techniques may be classified into two types. Thermal optimization in networkonchipbased 3d chip. Computing technology affects every aspect of our modern society and is a major catalyst for innovation across different sectors. This selfcalibrated lowpower coding and voltage scaling technique increases reliability and reduces energy consumption simultaneously.
Reduction of power consumption using different coding schemes. The network on chip is a routerbased packet switching network between soc modules. As technology shrinks, the power dissipated by the links of a network onchip noc starts to compete with the power dissipated by the other elements of the communication subsystem, namely, the routers and the network interfaces nis. Tech student, department of ece vijaya engineering college, ammapalem, thanikella m, khammam, telangana state. Energy saving using data encoding scheme in networkon. Reducing networkonchip energy consumption through spatial locality speculation hyungjun kim pritha ghoshal boris groty paul v. The data encoding techniques may be classified into two categories. We formulate the problem of energy consumption and reliability oriented application mapping on regular networkonchip topologies.
As modern systems are often mobile, energy consumption is an important design criterion. Implementation of data encoding and decoding architecture for network on chip 1p. Therefore the transition activity reduced bits are transmitted to reduce power consumption in the link of the noc. Energyefficient and reliable channels are provided for onchip interconnection networks ocins using a selfcalibrated voltage scaling technique with selfcorrected green scg coding scheme. These include the techniques that make use of shielding 7, 8, increasing. Scalability of communication architecture disadvantages internal network contention can cause a latency. Introduction network on chip also referred as communication subsystem, dissipate more power because of selfswitching activity and coupling switching activity. A survey of network on chip tools ahmed ben achballah dept. Abstract network on chip noc is used as a main part of a system. While 4 used the term on chip network, today, arguably, network on. Noc technology applies the theory and methods of computer networking to on chip communication and brings notable improvements over conventional bus and crossbar communication architectures.
This encoding method uses ldpc encoding for reducing the transition activity in noc link. The data encoding scheme is another method that was employed to reduce the link power dissipation. With the reduction of the technology size the bus dynamic energy consumption, which is brought by the coupling switching activity sa is increasing, and the effect of one single bus encoding on the bus energy saving is not significant. One e ective way to reduce noc power consumption is to. Because, soc has problems like cost, design risk, more complexity and more power consumption. The data encoding scheme is to reduce the link power dissipation. This is a collection of works on neural networks and neural accelerators. Noc technology is applied method for onchip communication and brings. Proposed encoding scheme for reduction energy consumption in. A survey of networkonchip tools ahmed ben achballah. Reducing switching activities through data encoding in. Coupling switching activity, data encoding, data decoding, noc, power reduction and verilog hdl. Implementation of data encoding and decoding architecture for.
Here, within the proposed work the encoder in ldpc is replaced with our data encoding schemes therefore as to cut back the power consumption in the ldpc techniques. A novel encoding method is proposed to reduce the transmission energy of serial communication. Energy and reliability oriented mapping for regular. Encoding techniques for reducing energy consumption in network on chip, 223.
Experimental results show that our proposed mapping approach can make a better balance between energy consumption and temperature, which reduces the peak temperature from 365. Pdf reducing networkonchip energy consumption through. The work started in this thesis ultimately provides designers with concrete numbers concerning the power and energy consumption of socs enabling them to optimize their. Power reduction technique for data encoding in networkon. Data encoding techniques for reducing energy consumption in. A n efficient low power ldpc method for networkonchip ms. Data encoding techniques for reducing energy consumption in networkonchip k. Encoding scheme for power reduction in network on chip links chetan s. Introduction 1every technology has facing some problems like power dissipation, energy consumption problems etc. Introduction the network on chip is an emerging approach for the implementation of on chip communication architecture. The proposed schemes are general and transparent with respect to the. This article introduces a new strategy to effectively diffuse heat from nocbased 3d cmps. An energyefficient deep neural network processor with onchip stereo matching dongjoo shin and hoijun yoo ieee hot chips symposium hcs, aug. Data encoding techniques for reducing energy consumption in network onchip article in ieee transactions on very large scale integration vlsi systems pp99.
Moreover many techniques were proposed by research community and some of. Data encoding techniques for lower power dissipation in network. Networksonchip seminar contents the premises homogenous and heterogeneous systemsonchip and their interconnection networks the networkonchip approach the. The performance of networkonchip noc largely depends on the underlying routing techniques, which have two constituencies. The data encoding scheme is another method that was employed to reducing the link power dissipation. Data encoding techniques for reducing energy consumption in networkonchip. Scaling cmos process technology continues to enable increased levels of system integration, leading to onchip communication demands beyond what traditional digital signaling techniques can efficiently provide with sufficient reliability. Optimization of energy consumption in a noc link by using novel data encoding technique asha j.
So network on chip came into existence, noc is the best. Using the data encoding with gray input is mainly reducing the errors and power dissipation by an noc. Reducing energy consumption by using data encoding techniques in network on chip v. Optimizing data encoding schemes to reducing energy. Keerthana padmanabhan 1 pg scholar, applied electronics. As the number of cores increases, this energy also increases, imposing serious constraints on design and performance of both applications and architectures.
Networkonchip shared bus is not a longterm solution it has poor scalability onchip micronetworks suit the demand of scalability and performance. The total power consumption of a 3d noc design depends on the allocation of the intellectual properties ips to the different network routers and the number of through silicon vias tsvs used in the design. Data encoding techniques for reducing energy consumption in networkonchip nima jafarzadeh, maurizio palesi, member, ieee, ahmad khademzadeh, and ali afzalikusha, senior member, ieee abstractas technology shrinks, the power dissipated by the links of a networkonchip noc starts to compete with the. Chip temperature and energy consumption become one of the most critical design issues with technology scaling to nanometrescale, especially for noc systems with large number of cores and shrunken core size. According to figure1 which represents noc architecture, shaded circle refers to wireless. With the target of reduction in power consumption in network on chip, three encoding schemes are presented in this. Data encoding techniques for reducing energy consumption. A major challenge to the e ciency of multicore chips is the energy used for communication among cores over a network on chip noc.
That could make it practical to run neural networks locally on smartphones or even to embed them in household appliances. This is due to the self switching and the second factor is cross coupling capacitance. Reducing networkonchip energy consumption through spatial. In this paper, we present a set of data encoding techniques aimed to reducing the power dissipated by the subsystem interconnections of an noc. To calculate the power consumption, experiments are performed using synopsys design vision, vhdlsim, and power compiler tools based on switching activity to measure the power consumption of 4, 5, 6, and 7port routers at various operating frequencies. In this paper, we focus on techniques aimed at reducing the power dissipated by the network links. Energy saving using data encoding scheme in networkonchip. A free powerpoint ppt presentation displayed as a flash slide show on. Reference 12 proposes a pulsewidth modulation scheme in which three bits are encoded into the clockrelative pulse delay and pulse width in order to reduce power by limiting the switching activity on the bus. Semiconductor technology and computer architecture has provided the necessary infrastructure on top of which every computer system has been developed offering high performance for computationallyintensive applications and low energy operation for less.
This endtoend encoding technique takes advantage of the pipeline nature of the wormhole switching technique. Index terms coupling switching activity, data encoding, interconnection on chip, low power, networkonchip noc, power analysis. Encoding techniques for reducing energy consumption in networkon. Reducing networkonchip energy consumption through spatial locality speculation.
Noc overcomes traditional systemonchip soc problems. Percentage energy reduction using different data encoding schemes under different synthetic traf. Mohanty, oghenekarho okobiah indian institute of engineering science and technology, shibpur, howrah 711103, wb, india. Network on chip, ldpc decoder, switching and coupling activity, encoding scheme. New chip reduces neural networks power consumption by up. Selfcalibrated energyefficient and reliable channels for on. Mit researchers have developed a specialpurpose chip that increases the speed of neuralnetwork computations by three to seven times over its predecessors, while reducing power consumption 93 to 96 percent. Aug 27, 2014 sd ieee vlsi 2014 data encoding techniques for reducing energy consumption in network on chip duration. In this paper we survey the state of the art of onchip interconnect techniques for improving performance, energy, and reliability and provide a. Data encoding techniques for reducing energy consumption in networkonchip article in ieee transactions on very large scale integration vlsi systems pp99.
Dasharath 2 1assistant professor, dept of ece, nalla malla reddy engineering college, hyderabad, ts, india. An efficient energy and thermalaware mapping for regular. This paper investigates the impact of input selection, and presents a novel contentionaware input selection cais. Reducing energy consumption by using data encoding techniques in networkonchip v. Data encoding techniques for reducing energy consumption in network onchip abstract. Data encoding techniques for reducing energy consumption in network on chip, vlsi ieee projects, vlsi image processing. This is due to the fact that for each four bits, six bits are transmitted which increases the communication traffic. Energy saving using data encoding scheme in networkonchip for ldpc application pooja painully. Optimizing data encoding technique for dynamic power. Data encoding techniques for reducing energy consumption in network onchip k.
Energy and reliability oriented mapping for regular networks. Chapter 5 systemnetworksystemnetworkonon chip test. Current state of the art energy estimation flows for mpsocs take a. Encoding scheme for power reduction in network on chip links.
Introduction moving from a silicon innovation hub to the. The modules on the ic are typically semiconductor ip cores schematizing various functions of the computer system, and are designed to be. Efficient data encoding and decoding for networkonchip. In this same realm of work, 911 introduce encoding schemes to reduce link energy consumption by reducing line transitions. Mit researchers have developed a specialpurpose chip that increases the speed of neural network computations by three to seven times over its predecessors, while reducing power consumption 93 to 96 percent. As technology improves, the power dissipated by the links of a networkonchip noc starts to compete with the power dissipated by the other elements of the. The dynamic power dissipation in links is major contributor to the power consumption in network on chip. Data encoding and data decoding technique for energy consumption for network on chip nxfee innovation vlsi ieee projects. Index termscoupling switching activity, data encoding, interconnection on chip, low power, networkonchip noc, power analysis.
Introduction as vlsi technologies continue to scale, wire densities increases to support eversmall transistor geometries and causes on chip wires to present increasing latency and energy problem. Reduction of power consumption using different coding schemes using fpga in noc by dr. Data encoding techniques for reducing energy consumption in network on chip k. Researchers step towards energyefficient multicore chips 29 march 2016, by carnegie mellon electrical and computer engineering. Therefore accurate estimates of the energy consumption of the implementation must be made early in the design process. We propose a novel branchandbound based algorithm to solve this problem. Proposed encoding scheme for reduction energy consumption in networkonchip p. Reducing networkonchip energy consumption thr ough. Different encoding techniques are proposed to reduce the power in reference to the bus based. Reduction of power consumption using different coding. Energy efficient and reliable channels are provided for on chip interconnection networks ocins using a selfcalibrated voltage scaling technique with selfcorrected green scg coding scheme.
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