Quantifying Thread Vulnerability for Multicore Architectures

Abstract—Continuously reducing transistor sizes and aggressive low power operating modes employed by modern architectures tend to increase transient error rates. Concurrently, multicore machines are dominating the architectural spectrum in various application domains. These two trends require a fresh look at resiliency of multithreaded applications against transient errors from a software perspective. In this paper, we propose and evaluate a new metric called the Thread Vulnerability Factor (TVF). A distinguishing characteristic of TVF is that its calculation for a given thread (which is typically one of the threads of a multithreaded application) does not depend on its code alone, but also on the codes of the threads that share data with that thread. As a result, we decompose TVF of a thread into two complementary parts: local and remote. While the former captures the TVF induced by the code of the target thread, the latter represents the vulnerability impact of the threads that int...

• Type: Journal
• Year: 2011
• Where: PDP
• Authors: Isil Oz, Haluk Rahmi Topcuoglu, Mahmut T. Kandemir, Oguz Tosun
• Keywords: Distributed And Parallel Computing, PDP 2011, Performance Reliability, Software Perspective, Source Code Level