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AprilApril 1, 2019 |
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April 4, 2019(1 event)
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April 11, 2019(1 event)
Modélisation et implémentation du produit de matrice parallèle avec minimisation des communications, by Thomas LambertModélisation et implémentation du produit de matrice parallèle avec minimisation des communications, by Thomas Lambert – Avec l’émergence du calcul haute-performance (HPC) et des applications Big Data, de nouvelles problématiques cruciales sont apparues. Parmi elles on trouve le problème du transfert de données, c’est-à-dire des communications entre machines, qui peut générer des délais lors de gros calculs en plus d’avoir un impact sur la consommation énergétique. Dans cette présentation nous nous intéresserons à la réduction des communications pour un problème particulier : le produit de matrices. Dans un premier temps nous nous intéressons à eux modélisation théoriques, basées respectivement sur le partitionnement d'un carré et d'un cube, ainsi qu'au algorithmes d’approximations existant pour résoudre ce problème. Dans un second temps nous nous intéresserons à la mise en application de ces algorithmes avec une implémentation pratique du produit de matrice sur une plate-forme hétérogène. Bâtiment IMAG (442) |
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May 9, 2019(1 event)
One can only gain by replacing EASY Backfilling: A simple scheduling policies case study, by Salah Zrigui (Datamove)One can only gain by replacing EASY Backfilling: A simple scheduling policies case study, by Salah Zrigui (Datamove) – High-Performance Computing (HPC) platforms are salle 442 |
May 10, 2019
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May 16, 2019(1 event)
Using Big Data Solutions to Improve HPC systems, by Thomas Ropars (LIG)Using Big Data Solutions to Improve HPC systems, by Thomas Ropars (LIG) – Supercomputers are producing large amount of data that need to be analyzed. They produce mostly two kinds of data: scientific data and monitoring data. Scientific data are the results of the execution of numerical simulations and need to be analyzed to extract knowledge. Monitoring data are produced by all kinds of sensors and software components, and can be analyzed to detect, among other things, reliability and performance issues. Considering the scale of such systems, the amount of data to process is huge and analyzing these data with short response time is often necessary. Using techniques and algorithms coming from the Big Data community seems appealing in this context. This talk will present some of our efforts in trying to apply Big Data and Machine Learning techniques in the HPC context. It will cover 3 main topics: i) The use of Apache Spark Streaming as a tool for in-situ data analysis; ii) The analysis of time series to predict CPU overheating issues in Supercomputers; iii) The application of classification algorithms to the placement problem in NUMA platforms. Bâtiment IMAG (206) |
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May 21, 2019(1 event)
Modeling, Prediction and Optimization of Energy Consumption of MPI Applications using SimGrid, by Christian Heinrich (PhD defense)Modeling, Prediction and Optimization of Energy Consumption of MPI Applications using SimGrid, by Christian Heinrich (PhD defense) – The High-Performance Computing (HPC) community is currently undergoing The energy consumption of these machines will continue to grow in the One approach to predict energy consumption is
Committee:
Bâtiment IMAG (amphitheater) Saint-Martin-d'Hères, 38400 France |
May 22, 2019
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May 23, 2019(1 event)
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May 24, 2019(1 event)
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