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218 results on '"Hagimont Daniel"'

1. Performance Optimization System for Hadoop and Spark Frameworks

Author

Astsatryan Hrachya, Kocharyan Aram, Hagimont Daniel, and Lalayan Arthur

Subjects
hadoop, spark, data compression, cpu/io tradeoff, performance optimization, Cybernetics, Q300-390
Abstract

The optimization of large-scale data sets depends on the technologies and methods used. The MapReduce model, implemented on Apache Hadoop or Spark, allows splitting large data sets into a set of blocks distributed on several machines. Data compression reduces data size and transfer time between disks and memory but requires additional processing. Therefore, finding an optimal tradeoff is a challenge, as a high compression factor may underload Input/Output but overload the processor. The paper aims to present a system enabling the selection of the compression tools and tuning the compression factor to reach the best performance in Apache Hadoop and Spark infrastructures based on simulation analyzes.

Published
2020
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2. Network in Disaggregated Datacenters

Author

Ekane, Brice, Pipereau, Yohan, Teabe, Boris, Tchana, Alain, Thomas, Gael, de palma, Noel, and Hagimont, Daniel

Subjects
Computer Science - Distributed, Parallel, and Cluster Computing, Computer Science - Networking and Internet Architecture
Abstract

Nowadays, datacenters lean on a computer-centric approach based on monolithic servers which include all necessary hardware resources (mainly CPU, RAM, network and disks) to run applications. Such an architecture comes with two main limitations: (1) difficulty to achieve full resource utilization and (2) coarse granularity for hardware maintenance. Recently, many works investigated a resource-centric approach called disaggregated architecture where the datacenter is composed of self-content resource boards interconnected using fast interconnection technologies, each resource board including instances of one resource type. The resource-centric architecture allows each resource to be managed (maintenance, allocation) independently. LegoOS is the first work which studied the implications of disaggregation on the operating system, proposing to disaggregate the operating system itself. They demonstrated the suitability of this approach, considering mainly CPU and RAM resources. However, they didn't study the implication of disaggregation on network resources. We reproduced a LegoOS infrastructure and extended it to support disaggregated networking. We show that networking can be disaggregated following the same principles, and that classical networking optimizations such as DMA, DDIO or loopback can be reproduced in such an environment. Our evaluations show the viability of the approach and the potential of future disaggregated infrastructures., Comment: 10 pages, 8 figures

Published
2021

3. Memory virtualization in virtualized systems: segmentation is better than paging

Author

Teabe, Boris, Yuhala, Peterson, Tchana, Alain, Hermenier, Fabien, Hagimont, Daniel, and Muller, Gilles

Subjects
Computer Science - Operating Systems
Abstract

The utilization of paging for virtual machine (VM) memory management is the root cause of memory virtualization overhead. This paper shows that paging is not necessary in the hypervisor. In fact, memory fragmentation, which explains paging utilization, is not an issue in virtualized datacenters thanks to VM memory demand patterns. Our solution Compromis, a novel Memory Management Unit, uses direct segment for VM memory management combined with paging for VM's processes. The paper presents a systematic methodology for implementing Compromis in the hardware, the hypervisor and the datacenter scheduler. Evaluation results show that Compromis outperforms the two popular memory virtualization solutions: shadow paging and Extended Page Table by up to 30% and 370% respectively.

Published
2020

8. Dealing with Performance Unpredictability in an Asymmetric Multicore Processor Cloud

Author

Teabe, Boris, Wapet, Patrick Lavoisier, Tchana, Alain, Hagimont, Daniel, 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, Rivera, Francisco F., editor, Pena, Tomás F., editor, and Cabaleiro, José C., editor

Published
2017
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10. Software Consolidation as an Efficient Energy and Cost Saving Solution for a SaaS/PaaS Cloud Model

Author

Tchana, Alain, Palma, Noel De, Safieddine, Ibrahim, Hagimont, Daniel, Diot, Bruno, Vuillerme, Nicolas, 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, Träff, Jesper Larsson, editor, Hunold, Sascha, editor, and Versaci, Francesco, editor

Published
2015
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12. DVFS Aware CPU Credit Enforcement in a Virtualized System

Author

Hagimont, Daniel, Mayap Kamga, Christine, Broto, Laurent, Tchana, Alain, De Palma, Noel, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Eyers, David, editor, and Schwan, Karsten, editor

Published
2013
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15. Autonomic Management Policy Specification: From UML to DSML

Author

Combemale, Benoît, Broto, Laurent, Crégut, Xavier, Daydé, Michel, Hagimont, Daniel, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Czarnecki, Krzysztof, editor, Ober, Ileana, editor, Bruel, Jean-Michel, editor, Uhl, Axel, editor, and Völter, Markus, editor

Published
2008
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16. Self-optimization of Clustered Message-Oriented Middleware

Author

Taton, Christophe, De Palma, Noël, Hagimont, Daniel, Bouchenak, Sara, Philippe, Jérémy, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Meersman, Robert, editor, and Tari, Zahir, editor

Published
2007
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17. Self-protection for Distributed Component-Based Applications

Author

Claudel, Benoit, De Palma, Noël, Lachaize, Renaud, Hagimont, Daniel, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Datta, Ajoy K., editor, and Gradinariu, Maria, editor

Published
2006
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18. Designing Self-adaptive Multimedia Applications Through Hierarchical Reconfiguration

Author

Layaida, Oussama, Hagimont, Daniel, 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, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Dough, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Kutvonen, Lea, editor, and Alonistioti, Nancy, editor

Published
2005
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21. Adaptive Media Streaming Using Self-reconfigurable Proxies

Author

Layaida, Oussama, Benattalah, Slim, Hagimont, Daniel, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Mammeri, Zoubir, editor, and Lorenz, Pascal, editor

Published
2004
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28. PerDiS: Design, Implementation, and Use of a PERsistent DIstributed Store

Author

Ferreira, Paulo, Shapiro, Marc, Blondel, Xavier, Fambon, Olivier, Garcia, João, Kloosterman, Sytse, Richer, Nicolas, Robert, Marcus, Sandakly, Fadi, Coulouris, George, Dollimore, Jean, Guedes, Paulo, Hagimont, Daniel, Krakowiak, Sacha, Goos, Gerhard, editor, Hartmanis, Juris, editor, van Leeuwen, Jan, editor, Krakowiak, Sacha, editor, and Shrivastava, Santosh, editor

Published
2000
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35. OFC

Author

Mvondo, Djob, primary, Bacou, Mathieu, additional, Nguetchouang, Kevin, additional, Ngale, Lucien, additional, Pouget, Stéphane, additional, Kouam, Josiane, additional, Lachaize, Renaud, additional, Hwang, Jinho, additional, Wood, Tim, additional, Hagimont, Daniel, additional, De Palma, Noël, additional, Batchakui, Bernabé, additional, and Tchana, Alain, additional

Published
2021
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49. PerDiS: Design, Implementation, and Use of a PERsistent DIstributed Store

Author

Ferreira, Paulo, primary, Shapiro, Marc, additional, Blondel, Xavier, additional, Fambon, Olivier, additional, Garcia, João, additional, Kloosterman, Sytse, additional, Richer, Nicolas, additional, Robert, Marcus, additional, Sandakly, Fadi, additional, Coulouris, George, additional, Dollimore, Jean, additional, Guedes, Paulo, additional, Hagimont, Daniel, additional, and Krakowiak, Sacha, additional

Published
2000
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