June 18, 2020
Giorgio Fabbri (GAEL)
–
June 18, 2020
TBA
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Aurélien Garivier (Postponed due to COVID lockdown) – TBA Bâtiment IMAG (442) |
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15June 15, 2020
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Stéphan Plassart [PhD defense]: Online Energy Optimization for real-time systems – I have the pleasure to announce you my PhD defense, entitled « Online Energy Optimization for real-time systems », which will be held by video-conference. The members of the jury are:
Abstract: The energy consumption is a crucial issue for real-time systems, that's why optimizing it online, i.e. while the processor is running, has become essential and will be the goal of this thesis. This optimization is done by adapting the processor speed during the job execution. This thesis addresses several situations with different knowledge on past, active and future job characteristics. Firstly, we consider that all job characteristics are known (the offline case), and we propose a linear time algorithm to determine the speed schedule to execute n jobs on a single processor. Secondly, using Markov decision processes, we solve the case where past and active job characteristics are entirely known, and for future jobs only the probability distribution of the jobs characteristics (arrival times, execution times and deadlines) are known. Thirdly we study a more general case: the execution is only discovered when the job is completed. In addition we also consider the case where we have no statistical knowledge on jobs, so we have to use learning methods to determine the optimal processor speeds online. Finally, we propose a feasibility analysis (the processor ability to execute all jobs before its deadline when it works always at maximal speed) of several classical online policies, and we show that our dynamic programming algorithm is also the best in terms of feasibility. |
17June 17, 2020
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Giorgio Fabbri (GAEL) |
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22June 22, 2020
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24June 24, 2020
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PhD defense Dong Quan Vu – |
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30June 30, 2020
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July1July 1, 2020 |
Seminar: Salah Zrigui – Title: Classification of energy profiles of HPC tasks Abstract: Salah will present how he analyzed, characterized and tried to classify energy consumption traces (time series) of HPC codes running on one of the GRICAD cluster. |
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August1August 1, 2020 |
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