Literature review of approaches to improve software energy efficiency: findings and recommendations

This report presents an overview of the state of the art on several approaches to improve software energy efficiency: code optimisation to speed up execution and to reduce memory access; parallelisation across multiple hardware cores to speed up execution; tuning compiler optimisations; code rewrite to target accelerators. Our recommendations are to invest in experts to assist researchers with those tasks and to invest in funding for research and development into tools to automate energy efficiency optimisation.Part of the UKRI Net Zero Digital Research Infrastructure Scoping Projec