Exploitation of nested thread-level speculative parallelism on multi-core systems

Abstract

Multi-cores such as the Intel Core 2 Duo, AMD Barcelona and IBM POWER6 are becoming ubiquitous. The number of cores and the resulting hardware parallelism is poised to increase rapidly in the foreseeable future. Nested thread-level speculative parallelization has been proposed as a means to exploit the hardware parallelism of such systems. In this paper, we present a methodology to gauge the efficacy of nested thread-level speculation with increasing level of nesting.