Association for Computing Machinery
To improve the performance of a single application on Chip Multi-Processors (CMPs), the application must be split into threads which execute concurrently on multiple cores. In multi-threaded applications, critical sections are used to ensure that only one thread accesses shared data at any given time. Critical sections can serialize the execution of threads, which significantly reduces performance and scalability. This paper proposes Accelerated Critical Sections (ACS), a technique that leverages the high-performance core(s) of an Asymmetric Chip Multi-Processor (ACMP) to accelerate the execution of critical sections. In ACS, selected critical sections are executed by a high-performance core, which can execute the critical section faster than the other, smaller cores.