RTL regression test selection using machine learning

G Parthasarathy, A Rushdi… - 2022 27th Asia and …, 2022 - ieeexplore.ieee.org
G Parthasarathy, A Rushdi, P Choudhary, S Nanda, M Evans, H Gunasekara, S Rajakumar
2022 27th Asia and South Pacific Design Automation Conference (ASP …, 2022ieeexplore.ieee.org
Regression testing is a technique to ensure that micro-electronic circuit design functionality
is correct under iterative changes during the design process. This incurs significant costs in
the hardware design and verification cycle in terms of productivity, machine and simulation
software costs, and time-sometimes as much as 70% of the hardware design costs. We
propose a machine learning approach to select a subset of tests from the set of all RTL
regression tests for the design. Ideally, the selected subset should detect all failures that the …
Regression testing is a technique to ensure that micro-electronic circuit design functionality is correct under iterative changes during the design process. This incurs significant costs in the hardware design and verification cycle in terms of productivity, machine and simulation software costs, and time - sometimes as much as 70% of the hardware design costs. We propose a machine learning approach to select a subset of tests from the set of all RTL regression tests for the design. Ideally, the selected subset should detect all failures that the full set of tests would have detected. Our approach learns characteristics of both RTL code and tests during the verification process to estimate the likelihood that a test will expose a bug introduced by an incremental design modification. This paper describes our approach to the problem and its implementation. We also present experiments on several real-world designs of various types with different types of test-suites that demonstrate significant time and resource savings while maintaining validation quality.
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