The role of thread-level speculation in the manycore era

Abstract

The purpose of this contribution is to discuss the role of software-based TLS solutions in the following years. From the software side, automatic parallelization techniques such as those based on the polyhedral model extracts parallelism from an increasing number of applications. The question here is whether this reduces the need from speculative runtime techniques. From the hardware side, the advent of manycore systems with dozens or hundreds of processors makes classic TLS techniques to have diminished returns. To deal with this scenario, an update of TLS runtime architectures may be desirable.