Energy estimation for MPI broadcasting algorithms in large scale HPC systems
Mohammed El Mehdi Diouri, Olivier Glück, Jean-Christophe Mignot, Laurent Lefèvre · 2013
Future supercomputers will gather hundreds of millions of communicating cores. The movement of data in such systems will be very energy consuming. We address in this paper the issue of energy consumption of data broadcasting in such large scale systems. To this end, we propose a framework to estimate the energy consumed by different MPI broadcasting algorithms for various execution settings. Validation results show that our estimations are highly accurate and allow to select the least consuming broadcasting algorithm.