PARALLEL EXECUTION TRACING: AN ALTERNATIVE SOLUTION TO EXPLOIT UNDER-UTILIZED RESOURCES IN MULTI-CORE ARCHITECTURES FOR CONTROL-FLOW CHECKING

摘要

In this paper, a software behavior-based technique is presented to detect control-flow errors in multi-core architectures. The analysis of a key point leads to introduce the proposed technique: employing under-utilized CPU resources in multi-core processors to check the execution flow of the programs concurrently and in parallel with the main executions. To evaluate the proposed technique, a quad-core processor system was used as the simulation environment, and the behavior of SPEC CPU2006 benchmarks were studied as the target to compare with conventional techniques. The experimental results, with regard to both detection coverage and performance overhead, demonstrate that on average about 94% of the control-flow errors can be detected by the proposed technique, more efficiently.