Title :
Improving yield of torus nocs through fault-diagnosis-and-repair of interconnect faults
Author :
Concatto, Caroline ; Almeida, Pedro ; Kastensmidt, Fernanda ; Cota, Érika ; Lubaszewski, Marcelo ; Hervé, Marcos
Author_Institution :
Inst. de Inf., Univ. Fed. do Rio Grande do Sul, Porto Alegre, Brazil
Abstract :
We propose a fault tolerance method for torus NoCs capable of increase the yield with minimal performance overhead. The proposed approach consists in detecting and diagnosing interconnect faults using BIST structures and activating alternative paths for the faulty links. Experimental results show that alternative fault-free paths are found by the dynamic routing for 95% of the diagnosed faults (stuck-at and pairwise shorts within a single link or between any two links).
Keywords :
built-in self test; fault diagnosis; fault tolerance; interconnections; network routing; network-on-chip; BIST structures; alternative fault-free paths; dynamic routing; fault tolerance method; interconnect fault repair; torus NoCs; Built-in self-test; Fault detection; Fault diagnosis; Fault tolerance; Network-on-a-chip; Routing; Switches; System-on-a-chip; Testing; Wires; Diagnosis; Fault Tolerance; Interconnect faults; NoC; adaptive routing;
Conference_Titel :
On-Line Testing Symposium, 2009. IOLTS 2009. 15th IEEE International
Conference_Location :
Sesimbra, Lisbon
Print_ISBN :
978-1-4244-4596-7
Electronic_ISBN :
978-1-4244-4595-0
DOI :
10.1109/IOLTS.2009.5195984
