Charka: A Reliability-Aware Test Scheme for Diagnosis of Channel Shorts Beyond Mesh NoCs

Biswajit Bhowmika, Jantindra Kumar Dekab and Santosh Biswasc
Department of Computer Science and Engineering, Indian Institute of Technology Guwahati, Assam, India.


This paper presents a fast and low cost on-line scheme named Charka that analyzes short faults in channels of octagon NoCs. Experimental results demonstrate that the proposed scheme achieves 100% coverage metrics and its online evaluation reveals compelling effect of these faults on system performance. We observe that the proposed scheme is upto 9X faster while packet latency is improved by 13.79-21.17% and energy consumption is reduced by 17.57-24.97%. Further, the test area overhead is reduced by 13-26% that shows 52-57.77% improvement.

Keywords: Channel short faults, Design for manufacturability, Yield, Reliability, and defect tolerance, On-line fault detection and diagnosis, Model effectiveness, On-line performance evaluation.

Full Text (PDF)