Poster:Value-Aware Scheduler for Energy Reduction

Optimizing energy consumption for computing workloads is a critical challenge, especially as we push the limits of high-performance systems within resource constraints. An underexplored approach to reducing energy costs is exploiting value locality: the tendency of instructions to process similar operand values during execution. Instruction operand values have abundant similarities within the reachable instruction window, a factor that existing architectures currently ignore. This paper introduces the broad concept of instruction-level, value-aware scheduling, an approach that leverages value locality in the hardware scheduler. By redirecting instructions of similar operand values to move together down the pipeline, the scheduler can reduce switching activity and dynamic energy usage. Such value-aware design philosophy, capable of adapting to a diverse range of workloads and architectures, has potential to be applied in broader architectural improvements.