Contact : Georges Da Costa
Email : georges.da-costa@irit.fr
Organisation : IRIT
Description du projet : Power consumption of computers is becoming an major concern. To optimise their power consumption it is necessary to have precise information on the behavior of applications. With this information, it is possible to choose the right frequency of a processor. The speed of some applications is not really impacted by changes of this frequency, while for some application it has an important effect.
The goal of this internship is to model the fine grained behavior of applications and to link this behavior with the impact (on performance and energy) of frequency changes. As it is difficult even for programmers to know this exact behavior, we will obtain it through fine grained monitoring (hardware performance counters, RAPL, ...)
This project will: * Acquire behavior of HPC applications at different frequencies (several datasets are already availble) * Model the performance and energy in function of the frequency and monitored values * If time allows, propose a scheduling algorithm harnessing the model to select the best frequency.