Algorithms for scheduling task-based applications onto heterogeneous many-core architectures

Abstract

In this paper we present an Integer Linear Programming (ILP) formulation and two non-iterative heuristics for scheduling a task-based application onto a heterogeneous many-core architecture. Our ILP formulation is able to handle different application performance targets, e.g., low execution time, low memory miss rate, and different architectural features, e.g., cache sizes. For large size problem where the ILP convergence time may be too long, we propose a simple mapping algorithm which tries to spread tasks onto as many processing units as possible, and a more elaborate heuristic that shows good mapping performance when compared to the ILP formulation. We use two realistic power electronics applications to evaluate our mapping techniques on full RTL many-core systems consisting of eight different types of processor cores.