NDLI: SurfNoC: a low latency and provably non-interfering approach to secure networks-on-chip

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SurfNoC: a low latency and provably non-interfering approach to secure networks-on-chip

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SurfNoC: a low latency and provably non-interfering approach to secure networks-on-chip

Content Provider	ACM Digital Library
Author	Gao, Ying Huffmire, Ted Chong, Frederic T. Oberg, Jason K. Wassel, Hassan M. G. Kastner, Ryan Sherwood, Timothy
Abstract	As multicore processors find increasing adoption in domains such as aerospace and medical devices where failures have the potential to be catastrophic, strong performance isolation and security become first-class design constraints. When cores are used to run separate pieces of the system, strong time and space partitioning can help provide such guarantees. However, as the number of partitions or the asymmetry in partition bandwidth allocations grows, the additional latency incurred by time multiplexing the network can significantly impact performance. In this paper, we introduce SurfNoC, an on-chip network that significantly reduces the latency incurred by temporal partitioning. By carefully scheduling the network into waves that flow across the interconnect, data from different domains carried by these waves are strictly non-interfering while avoiding the significant overheads associated with cycle-by-cycle time multiplexing. We describe the scheduling policy and router microarchitecture changes required, and evaluate the information-flow security of a synthesizable implementation through gate-level information flow analysis. When comparing our approach for varying numbers of domains and network sizes, we find that in many cases SurfNoC can reduce the latency overhead of implementing cycle-level non-interference by up to 85%.
Starting Page	583
Ending Page	594
Page Count	12
File Format	PDF
ISBN	9781450320795
DOI	10.1145/2485922.2485972
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2013-06-23
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Non-interference High assurance systems Networks-on-chip
Content Type	Text
Resource Type	Article

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