Trace-based microarchitecture-level diagnosis of permanent hardware faults

As devices continue to scale, future shipped hardware will likely fail due to in-the-field hardware faults. As traditional redundancy-based hardware reliability solutions that tackle these faults will be too expensive to be broadly deployable, recent research has focused on low-overhead reliability solutions. One approach is to employ lowoverhead (“always-on”) detection techniques that catch high-level symptoms and pay a higher overhead for (rarely invoked) diagnosis. This paper presents trace-based fault diagnosis, a diagnosis strategy that identifies permanent faults in microarchitectural units by analyzing the faulty core’s instruction trace. Once a fault is detected, the faulty core is rolled back and re-executes from a previous checkpoint, generating a faulty instruction trace and recording the microarchitecture-level resource usage. A diagnosis process on another fault-free core then generates a fault-free trace which it compares with the faulty trace to identify the fau...

• Type: Conference
• Year: 2008
• Where: DSN
• Authors: Man-Lap Li, Pradeep Ramachandran, Swarup Kumar Sahoo, Sarita V. Adve, Vikram S. Adve, Yuanyuan Zhou
• Keywords: Computer Networks, DSN 2008, Faulty Core, In-the-field Hardware Faults, Permanent Faults