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Automated generation of directed tests for transition coverage in cache coherence protocols

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2 Author(s)
Qin, X. ; Comput. & Inf. Sci. & Eng., Univ. of Florida, Gainesville, FL, USA ; Mishra, P.

Processors with multiple cores and complex cache coherence protocols are widely employed to improve the overall performance. It is a major challenge to verify the correctness of a cache coherence protocol since the number of reachable states grows exponentially with the number of cores. In this paper, we propose an efficient test generation technique, which can be used to achieve full state and transition coverage in simulation based verification for a wide variety of cache coherence protocols. Based on effective analysis of the state space structure, our method can generate more efficient test sequences (50% shorter) compared with tests generated by breadth first search. Moreover, our proposed approach can generate tests on-the-fly due to its space efficient design.

Published in:

Design, Automation & Test in Europe Conference & Exhibition (DATE), 2012

Date of Conference:

12-16 March 2012