M. Vinodhini currently serves as Assistant Professor(Sr.Gr) at department of Electronics and Communication, Amrita School of Engineering. She is currently pursuing her Ph. D. 


Publication Type: Conference Paper
Year of Publication Publication Type Title
2015 Conference Paper Ha Kalwad, Neeharika, Sb, Divya, Sc, M. Vinodhini, and N.S. Murty, “Merged switch allocation and transversal with dual layer adaptive error control for Network-on-Chip switches”, in 2015 International Conference on VLSI Systems, Architecture, Technology and Applications, VLSI-SATA 2015, 2015.[Abstract]

In this paper, we propose a Network on Chip router architecture with increased reliability, energy efficiency and with reduced area overhead. The proposed router architecture model adjusts dynamically to the error control strengths of the layers of NoC. In this paper, we target to optimize the combined operations of arbiter and multiplexer by using a Merged Arbiter Multiplexer (MARX) along with a dual layer cooperative error control protocol. By doing so, the number of pipe line stages, area and power consumed is reduced. We use XY Routing algorithm to send data from one router to the other when these routers are placed in network architecture. The proposed model outperforms the dual layer error control model without MARX unit. The router architecture with MARX unit has 22.7% less area and 2.4% less energy consumption than router architecture without MARX unit but has moderate increase in the delay. © 2015 IEEE.

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2015 Conference Paper M. Vinodhini, Lillygrace, K., and N.S. Murty, “A fault tolerant NoC architecture with runtime adaptive double layer error control and crosstalk avoidance”, in 2015 IEEE International Conference on Computational Intelligence and Computing Research, ICCIC 2015, 2015.[Abstract]

This paper proposes fault tolerant Network on Chip (NoC) architecture which enables switching of error control coding scheme present in data link layer and network layer as needed, depending upon the rate of error at runtime. The proposed Joint Crosstalk Avoidance-Five Bit Error Correction-Six Bit Error Detection (JCA-FBEC-SBED) error control coding scheme is used in both the layers. This scheme provides crosstalk avoidance and also random and burst error correction up to 5 bits and detection up to 6 bits. The error detection outcomes at all routers in the path are recorded in the error information flit. With the help of error information flit, the error rate is calculated in the destination network interface. The calculated error rate is compared with two threshold values selected based upon the traffic pattern used. If the error rate is less than the lower threshold value, only network layer error control coding scheme is activated. If the error rate is in between the lower and higher threshold values then the error control scheme present in both network layer and datalink layer will be activated, but the error control scheme present in data link layer is activated only in the alternate routers present in the routing path. If the error rate crosses higher threshold value, error control coding scheme present in both the layers will be activated. The proposed JCA-FBEC-SBED error control coding scheme has higher reliability in terms of error detection and correction, when compared to other error control coding schemes with trade-off in delay, area and power consumption. The proposed router architecture has reduced delay and slight increase in area and power consumption of 2.1% and 5.8% respectively, when compared to the runtime adaptive scrubbing router. Our proposed fault tolerant NoC architecture theoretically provide higher data transfer reliability and energy efficiency when compared to other double layer runtime adaptive fault tolerant NoC architectures. The runtime adaptive error control reduces the overall power consumption of the NoC architecture even though JCA-FBEC-SBED decoder consumes more power compared to other schemes. © 2015 IEEE.

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