Online error detection in multiprocessor chips: A test scheduling study

Multicore architectures are employed in the majority of computing domains (general-purpose microprocessors as well as specialized high-performance architectures such as network processors). Online error detection in such chips can employ effective techniques from single core microprocessors, however, effective test scheduling should be employed to minimize the overall chip test execution time which can significantly increase due to congestion on common hardware resources used by the cores. In this paper, we analyze the most important aspects of online error detection and scheduling in multiprocessor chips and evaluate test execution time in several different configurations of Intel´s SCC architecture.