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Presentation
Accelerating Parallel Verification via Complementary Property Partitioning and Strategy Exploration
Proceedings of the 20th International Conference on Formal Methods in Computer Aided Design
  • Rohit Dureja, Iowa State University
  • Jason Baumgartner, IBM Corporation
  • Robert Kanzelman, IBM Corporation
  • Mark Williams, IBM Corporation
  • Kristin Y. Rozier, Iowa State University
Document Type
Conference Proceeding
Conference
2020 Formal Methods in Computer Aided Design (FMCAD)
Publication Version
Published Version
Publication Date
12-22-2020
DOI
10.34727/2020/isbn.978-3-85448-042-6_8
Conference Title
20th International Conference on Formal Methods in Computer Aided Design
Conference Date
September 21-24, 2020
Geolocation
(32.7940463, 34.989571)
Abstract

Industrial hardware verification tasks often require checking a large number of properties within a testbench. Verification tools often utilize parallelism in their solving orchestration to improve scalability, either in portfolio mode where different solver strategies run concurrently, or in partitioning mode where disjoint property subsets are verified independently. While most tools focus solely upon reducing end-to-end walltime, reducing overall CPU-time is a comparably-important goal influencing power consumption, competition for available machines, and IT costs. Portfolio approaches often degrade into highly-redundant work across processes, where similar strategies address properties in nearly-identical order. Partitioning should take property affinity into account, atomically verifying high-affinity properties to minimize redundant work of applying identical strategies on individual properties with nearly-identical logic cones. In this paper, we improve multi-property parallel verification with respect to both wall- and CPU-time. We extend affinity-based partitioning to guarantee complete utilization of available processes, with provable partition quality. We propose methods to minimize redundant computation, and dynamically optimize work distribution. We deploy our techniques in a sequential redundancy removal framework, using localization to solve non-inductive properties. Our techniques offer a median 2.4× speedup yielding 18.1% more property solves, as demonstrated by extensive experiments.

Comments

This proceeding is published as Dureja, Rohit, Jason Baumgartner, Robert Kanzelman, Mark Williams, and Kristin Y. Rozier. "Accelerating Parallel Verification via Complementary Property Partitioning and Strategy Exploration." In Proceedings of the 20th International Conference on Formal Methods in Computer Aided Design (Strichman, O. and A. Ivrii, eds.) (2020): 16-25. DOI: 10.34727/2020/isbn.978-3-85448-042-6_8. Posted with permission.

Creative Commons License
Creative Commons Attribution 4.0 International
Copyright Owner
IEEE
Language
en
File Format
application/pdf
Citation Information
Rohit Dureja, Jason Baumgartner, Robert Kanzelman, Mark Williams, et al.. "Accelerating Parallel Verification via Complementary Property Partitioning and Strategy Exploration" Proceedings of the 20th International Conference on Formal Methods in Computer Aided Design (2020) p. 16 - 25
Available at: http://works.bepress.com/kristin-yvonne-rozier/51/