Liyaqat Nazir

Work place: National Institute of Technology, Srinagar, J&K, India

E-mail: liyaqat_02phd13@nitsri.net

Website:

Research Interests: Interaction Design, Network Architecture, Algorithm Design

Biography

Liyaqat Nazir, is presently a Ph.D. scholar in National Institute of Technology from India. He has received the B.Tech degree in Electronics and Communications Engineering from the Islamic University of Science and Technology, India, in 2011, He did his M.Tech degree in Communications and Information Technology from National Institute of Technology Srinagar, India in 2013. Currently he is a Ph.D. scholar in the department of Computer Science and Engineering, NIT, Srinagar. His main research interests include Network on chip, Digital VLSI design, Mixed signal design. Reconfigurable architectures, Architectural and technology dependent optimizations targeted for FPGA platforms, etc. He has many publications in the related field and is a Graduate student member of IEEE. He is also a lifetime member of IETE.

In recent years, Network on chip has been actively researched. Buffer management and buffering policies are the elementary problem in the applications.

Author Articles
Realization of Efficient High Throughput Buffering Policies for Network on Chip Router

By Liyaqat Nazir Roohie Naaz Mir

DOI: https://doi.org/10.5815/ijcnis.2016.07.08, Pub. Date: 8 Jul. 2016

The communication between processing elements is suffering challenges due to power, area and latency. Temporary flit storage during communication consumes the maximum power of the whole power consumption of the chip. The majority of current NoCs consume a high amount of power and area for router buffers only. Removing buffers and virtual channels (VCs) significantly simplifies router design and reduces the power dissipation by a considerable amount. The buffering scheme used in virtual channeling in a network-on-chip based router plays a significant role in determining the performance of the whole network-on-chip based mesh. Elastic buffer (EB) flow control is a simple control logic in the channels to use pipeline flip-flops (FFs) as storage locations. With the use of elastic buffers, input buffers are no longer required hence leading to a simplified router design. In this paper properties of buffers are studied with a test microarchitecture router for several packet injection rates given at an input port. The prime contribution of this article is the evaluation of various forms of the elastic buffers for throughput, FPGA resource utilization, average power consumed, and the maximum speed offered. The article also gives a comparison with some available buffering policies against throughput. The paper presents the synthesis and implementation on FPGA platforms. The work will help NoC designers in suitable simple router implementation for their FPGA design. The implementation targets Virtex5 FPGA and Stratix III device family.

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