Abstract : In this talk, we present the StarPU runtime system and its programming model, the Sequential Task Flow (STF) which aims in providing easy (performance) portability of code. We propose two extensions to StarPU and its programming model in order to allow better scalability of the runtime system, namely: parallel tasks and hierarchical tasks. These two extensions aim in tackling some limitations of the StarPU runtime system and we highlight the performance benefits of these techniques.
