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3. TINS: A Task-Based Dynamic Helper Core Strategy for In Situ Analytics

Author

Dirand, Estelle, Colombet, Laurent, Raffin, Bruno, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Yokota, Rio, editor, and Wu, Weigang, editor

Published
2018
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4. Dynamic Load Balancing with Pair Potentials

Author

Papin, Jean-Charles, Denoual, Christophe, Colombet, Laurent, Namyst, Raymond, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Kobsa, Alfred, Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Lopes, Luís, editor, Žilinskas, Julius, editor, Costan, Alexandru, editor, Cascella, Roberto G., editor, Kecskemeti, Gabor, editor, Jeannot, Emmanuel, editor, Cannataro, Mario, editor, Ricci, Laura, editor, Benkner, Siegfried, editor, Petit, Salvador, editor, Scarano, Vittorio, editor, Gracia, José, editor, Hunold, Sascha, editor, Scott, Stephen L., editor, Lankes, Stefan, editor, Lengauer, Christian, editor, Carretero, Jesús, editor, Breitbart, Jens, editor, and Alexander, Michael, editor

Published
2014
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5. ExaStamp: A Parallel Framework for Molecular Dynamics on Heterogeneous Clusters

Author

Cieren, Emmanuel, Colombet, Laurent, Pitoiset, Samuel, Namyst, Raymond, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Kobsa, Alfred, Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Lopes, Luís, editor, Žilinskas, Julius, editor, Costan, Alexandru, editor, Cascella, Roberto G., editor, Kecskemeti, Gabor, editor, Jeannot, Emmanuel, editor, Cannataro, Mario, editor, Ricci, Laura, editor, Benkner, Siegfried, editor, Petit, Salvador, editor, Scarano, Vittorio, editor, Gracia, José, editor, Hunold, Sascha, editor, Scott, Stephen L., editor, Lankes, Stefan, editor, Lengauer, Christian, editor, Carretero, Jesús, editor, Breitbart, Jens, editor, and Alexander, Michael, editor

Published
2014
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11. Parallelization of applications for homogeneous and heterogeneous processors network

Author

Colombet, Laurent, Laboratoire de Modélisation et Calcul (LMC - IMAG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), Institut National Polytechnique de Grenoble - INPG, Trystram Denis, and Imag, Thèses

Subjects
[INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI], [INFO.INFO-NI] Computer Science [cs]/Networking and Internet Architecture [cs.NI], Facteur d'acceleration, Efficacite, communication, Parallelization, communications, Efficiency, Overlapping computations, Speedup, Parallelisme, Recouvrement calcul
Abstract

The aim of this thesis is to study and develop efficient methods for parallelization of scientific applications on parallel computers with distributed memory. In the first part we present two libraries of PVM((\it Parallel Virtual Machine)) and MPI ((\it Message Passing Interface)) communication tools. They allow implementation of programs on most parallel machines, but also on heterogeneous computer networks. This chapter illustrates the problems faced when trying to evaluate performances of networks with heterogeneous processors. To evaluate such performances we modified and adapted the concepts of speed-up and efficiency to account for heterogeneity. The second part deals with a study of parallel application libraries such as ScaLAPACK and with the development of communication masking techniques. The general concept is based on communication anticipation, in particular by pipelining message sending operations. Experimental results on Cray T3D and IBM SP1 machines validates the theoretical studies performed on basic algorithms of the libraries discussed above., Le but de cette these est d'etudier et developper des methodes pour la parallelisation efficace des applications scientifiques sur machines paralleles a memoire distribuee. Dans une premiere partie nous presentons deux bibliotheques de fonctions de communication PVM ((\it Parallel Virtual Machine)) et MPI ((\it Message Passing Interface)). Ces dernieres fournissent une portabilite des programmes sur la grande majorite des machines paralleles, mais aussi sur des reseaux d'ordinateurs heterogenes. Cette partie illustre le probleme de la mesure des performances pour des reseaux de processeurs heterogenes. Ceci nous a amene a adapter le calcul du facteur d'acceleration et de l'efficacite afin de pouvoir evaluer les performances d'un algorithme sur un reseau de processeurs heterogenes. La deuxieme partie est consacree a l'etude de bibliotheques numeriques paralleles, comme ScaLAPACK, et au developpement d'une methode etudiee de maniere theorique, mais peu utilisee en pratique pour augmenter les performances des fonctions de ces bibliotheques : le recouvrement calcul/communication. L'idee generale consiste a anticiper les communications, notamment en pipelinant l'envoi des messages. Des resultats experimentaux sur machines Cray T3D et IBM SP1, permettent de valider les etudes theoriques effectuees sur des algorithmes de base de ces bibliotheques.

Published
1994

14. Towards On-the-Fly Processing.

Author

Bergeret, Nicolas, Colombet, Laurent, Durand, Olivier, and Soulard, Laurent

Subjects
*DATA transmission systems, *SIMULATION methods & models, *COMPUTER software, *LEARNING, *COMPUTER systems
Abstract

The article focuses on the growth in computing due to next generation computers enabling data transmission and simulation. It talks about the efficiency of computer systems as it helps to analyse and utilize data for development. It tells about the software Parallel Data Workflow for Analysis (PaDaWAn) created to make data transmission and simulation easier. It also tells about the software ExaStamp developed for physicist for their learning purposes.

Published
2017

16. La dynamique moléculaire pour les machines exascale

Author

CIEREN, Emmanuel, Namyst, Raymond, Colombet, Laurent, Calvin, Christophe, Germann, Timothy c., Coulaud, Olivier, Desprez, Frédéric, and Pérez, Christian

Subjects
Dynamique Moléculaire, Vectorisation, Xeon Phi, Calcul Intensif, Multi-Cœurs, Message Passing Interface, Threads, Équilibrage de charge, C++, Tbb

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