Energy Efficiency Analysis of Compiler Optimizations on the SPEC CPU 2017 Benchmark Suite

The growth of cloud services leads to more and more data centers that are increasingly larger and consume considerable amounts of power. To increase energy efficiency, both the actual server equipment and the software themselves must become more energy-efficient. It is the software that controls the hardware to a considerable degree. In this work-in-progress paper, we present a first analysis of how compiler optimizations can influence energy efficiency. We base our analysis on workloads of the SPEC CPU 2017 benchmark. With 43 benchmarks from different domains, including integer and floating-point heavy computations executed on a state-of-the-art server system for cloud applications, SPEC CPU 2017 offers a representative selection of workloads.