Feedback Compilation for Decoupled Access-Execute Techniques

Abstract: Software level optimization for compilers has become a major research field.Dynamic Voltage Frequency Scaling (DVFS) technology gives some options for optimization, such as tweaking the voltage or frequency. Improvements in voltage are quickly reaching their limits and hence this thesis work investigates approaches that are focused on dynamic frequency scaling. Finding an optimum with respect to two objectives: performance and energy, has been explored for Decoupled-Access-Execute(DAE) technology with iterative feedback compilations.The goal is to find a close-to-optimum output with a multi-versioned procedure within a limited budget and examine how well and on what aspect DAE can make improvements. This thesis work focuses on automating the compilation with DAE, including program instruction analysis for automatic selection of initial search parameters.