1. 1 NoCAlert (MICRO-2012) University of Cyprus International Symposium on Microarchitecture, December 3 2012, Vancouver, Canada The Multicore Computer Architecture Laboratory (multiCAL) Ξ - Computer Architecture Research Group (Ξ - CARCH) EuroCloud FP7 Project NoCAlert: An On-Line and Real-Time Fault Detection Mechanism for Network-on-Chip Architectures Andreas Prodromou, Andreas Panteli, Chrysostomos Nicopoulos, Yiannakis Sazeides

2. 2 NoCAlert (MICRO-2012) University of Cyprus Wrong is NOT Always Illegal In Networks-on-Chip, checking for legality is the same as checking for correctness. Let the values be wrong. As long as they are legal… But checking for legality is much simpler Extremely fast and efficient fault detection Instantaneous detection

3. 3 NoCAlert (MICRO-2012) University of Cyprus Invariance Checking How to achieve this: Invariance Checking Inputs and outputs of the main components are constantly monitored Extremely lightweight solution 3% Area Overhead 0.7% Power Overhead 1% Delay Overhead Scales efficiently to more complex designs

4. 4 NoCAlert (MICRO-2012) University of Cyprus Where and When 14:30 – 15:00 Section IB – Fault Tolerance We would be glad to see you there