Self-adaptive OmpSs tasks in heterogeneous environments
Tipus de documentText en actes de congrés
EditorInstitute of Electrical and Electronics Engineers (IEEE)
Condicions d'accésAccés obert
Projecte de la Comissió EuropeaTERAFLUX - Exploiting dataflow parallelism in Teradevice Computing (EC-FP7-249013)
As new heterogeneous systems and hardware accelerators appear, high performance computers can reach a higher level of computational power. Nevertheless, this does not come for free: the more heterogeneity the system presents, the more complex becomes the programming task in terms of resource management. OmpSs is a task-based programming model and framework focused on the runtime exploitation of parallelism from annotated sequential applications. This paper presents a set of extensions to this framework: we show how the application programmer can expose different specialized versions of tasks (i.e. pieces of specific code targeted and optimized for a particular architecture) and how the system can choose between these versions at runtime to obtain the best performance achievable for the given application. From the results obtained in a multi-GPU system, we prove that our proposal gives flexibility to application's source code and can potentially increase application's performance.
CitacióPlanas, J. [et al.]. Self-adaptive OmpSs tasks in heterogeneous environments. A: IEEE International Parallel and Distributed Processing Symposium. "IEEE 27th International Parallel and Distributed Processing Symposium: 20–24 May 2013, Boston, Massachusetts: proceedings". Boston, MA: Institute of Electrical and Electronics Engineers (IEEE), 2013, p. 138-149.