ILP Aware Scheduling on Multithreaded Multi-core Processors

Abstract: Multithreaded Multi-core processors are prevalent today and are used for solving some of the important problems in computing. Resource imbalance can negatively impact overall performance in such processors. Hence balanced resource utilization is important in such processors. Particularly, it is important to maximize utilization of available instruction-level-parallelism (ILP). In this paper I present an ILP aware operating system (OS) scheduling algorithm for Multithreaded Multi-core processors. By keeping track of available ILP in each thread and by balancing it with available ILP resources in the system the OS will come up with a new schedule of threads for the next quantum. This new schedule will potentially result in a more balanced resource-utilization and improve performance for the next quantum. This work can be extended by doing a detailed quantitative evaluation.