RT Conference Proceedings T1 Energy efficiency optimization of task-parallel codes on asymmetric architectures A1 Igual, Francisco D. A1 Costero Valero, Luis María A1 Igual Peña, Francisco Daniel A1 Olcoz Herrero, Katzalin A1 Tirado Fernández, José Francisco AB We present a family of policies that, integrated within a runtime task scheduler (Nanox), pursue the goal of improving the energy efficiency of task-parallel executions with no intervention from the programmer. The proposed policies tackle the problem by modifying the core operating frequency via DVFS mechanisms, or by enabling/disabling the mapping of tasks to specific cores at selected execution points, depending on the internal status of the scheduler. Experimental results on an asymmetric SoC (Exynos 5422) and for a specific operation (Cholesky factorization) reveal gains up to 29% in terms of energy efficiency and considerable reductions in average power SN 978-1-5386-3250-5 YR 2017 FD 2017 LK https://hdl.handle.net/20.500.14352/101021 UL https://hdl.handle.net/20.500.14352/101021 LA eng DS Docta Complutense RD 5 abr 2025