2021/05/28 by Riley Roberts, Benjamin Lewis, Roberts, Riley +11
Computer Science · #Embedded Systems Design Techniques #FOS: Computer and information sciences #FOS: Electrical engineering #Formal Methods in Verification #Networking and Internet Architecture (cs.NI) #Systems and Control (eess.SY) #VLSI and Analog Circuit Testing #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2108.13148
openalex publication_date 2021/05/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Modern network-on-chip (NoC) systems face reliability issues due to process and environmental variations. The power supply noise (PSN) in the power delivery network of a NoC plays a key role in determining reliability. PSN leads to voltage droop, which can cause timing errors in the NoC. This paper makes a novel contribution towards formally analyzing PSN in NoC systems. We present a probabilistic model checking approach to observe the PSN in a generic 2x2 mesh NoC with a uniform random traffic load. Key features of PSN are measured at the behavioral level. To tackle state explosion, we apply incremental abstraction techniques, including a novel probabilistic choice abstraction, based on observations of NoC behavior. The Modest Toolset is used for probabilistic modeling and verification. Results are obtained for several flit injection patterns to reveal their impacts on PSN. Our analysis finds an optimal flit pattern generation with zero probability of PSN events and suggests spreading flits rather than releasing them in consecutive cycles in order to minimize PSN.