conference paper
Formal specification and verification of a dataflow processor array
published
Thomas A
Henzinger
author 40876CD8-F248-11E8-B48F-1D18A9856A870000−0002−2985−7724
Xiaojun
Liu
author
Shaz
Qadeer
author
Sriram
Rajamani
author
ICCAD: Computer-Aided Design
We describe the formal specification and verification of the VGI parallel DSP chip [1], which contains 64 compute processors with ~30K gates in each processor. Our effort coincided in time with the “informal” verification stage of the chip. By interacting with the designers, we produced an abstract but executable specification of the design which embodies the programmer's view of the system. Given the size of the design, an automatic check that even one of the 64 processors satisfies its specification is well beyond the scope of current verification tools. However, the check can be decomposed using assume-guarantee reasoning. For VGI, the implementation and specification operate at different time scales: several steps of the implementation correspond to a single step in the specification. We generalized both the assume-guarantee method and our model checker MOCHA to allow compositional verification for such applications. We used our proof rule to decompose the verification problem of the VGI chip into smaller proof obligations that were discharged automatically by MOCHA. Using our formal approach, we uncovered and fixed subtle bugs that were unknown to the designers.
IEEE1999
494 - 499
yes
Henzinger, Thomas A., et al. <i>Formal Specification and Verification of a Dataflow Processor Array</i>. IEEE, 1999, pp. 494–99.
Henzinger, T. A., Liu, X., Qadeer, S., & Rajamani, S. (1999). Formal specification and verification of a dataflow processor array (pp. 494–499). Presented at the ICCAD: Computer-Aided Design, IEEE.
T.A. Henzinger, X. Liu, S. Qadeer, S. Rajamani, in:, IEEE, 1999, pp. 494–499.
Henzinger, Thomas A, Xiaojun Liu, Shaz Qadeer, and Sriram Rajamani. “Formal Specification and Verification of a Dataflow Processor Array,” 494–99. IEEE, 1999.
T. A. Henzinger, X. Liu, S. Qadeer, and S. Rajamani, “Formal specification and verification of a dataflow processor array,” presented at the ICCAD: Computer-Aided Design, 1999, pp. 494–499.
Henzinger TA, Liu X, Qadeer S, Rajamani S. 1999. Formal specification and verification of a dataflow processor array. ICCAD: Computer-Aided Design, 494–499.
Henzinger TA, Liu X, Qadeer S, Rajamani S. Formal specification and verification of a dataflow processor array. In: IEEE; 1999:494-499.
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