CURRICULUM VITAE. Luiz Angelo Barchet-Estefanel Date of birth: 22 April Meylan France

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1 CURRICULUM VITAE Personal Details Name: Luiz Angelo Barchet-Estefanel Address: 9, Allée de la Piat Date of birth: 22 April Meylan Nationality: Brazilian France Marital status: Married Work phone: Home phone: Fax: Luiz-Angelo.Estefanel@imag.fr Homepage: perso.html/pageperso_en.html Objective A post-doctoral position in the field of Parallel and Distributed Systems. Research domains: Parallel and Distributed Systems, Performance Modelling, Communication Scheduling, Distributed Algorithms, Fault Tolerance, Consensus, Failure Detectors Education PhD in Computer Science (expected December 2005) Graduate school of Mathematics and Computer Science, Institut National Polytechnique de Grenoble (INPG), Grenoble, France. Laboratory ID (Informatique et Distribution) IMAG (Institut d'informatique et Mathématiques Appliquées de Grenoble) Advisor: Professor Denis Tristram Associate Professor: Grégory Mounié Dissertation: Adaptive and Efficient Collective Communications for Grid Environments Abstract : Large scale computational grid, whose resources are distributed over large distances, are typical environments where the heterogeneity of both resources and connexions represent a challenge to efficient communication and coordination among the nodes. In this context, collective communication operations are specially concerned, once that achieving efficient collective communication operations on grid environments is a key aspect to high performance parallel applications. Therefore, efficient collective communications must be optimised and dynamically adapted to reflect the heterogeneity and/or the volatility of the environment. While traditional works on grid-aware collective communications simply rely on the separation of local and wide-area communications, this approach is far from the optimality. Our research subject, instead, considers the different aspects necessary to optimise collective communication performances. Indeed, in our work we investigate how topology discovery, performance modelling and optimisation heuristics may be associate to construct hierarchical communication structures that achieve a maximal performance while keeping a low complexity.

2 MSc in Communication Systems Doctoral School in Communication Systems, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland. Advisor: Professor André Schiper Dissertation: Analysing RBP, a Total Order Broadcast Protocol for Unreliable Channels Abstract : RBP is the acronym for Reliable Broadcast Protocol. It was published by Chang and Maxemchuck in 1984, and aims to provide total order and reliable broadcast in a distributed system subjected to process failures and fair lossy links. While the original definitions are not recent, new protocols and implementations still make use of its concepts (for example, RMP, Pinwheel and TRMP). We started our analysis by comparing RBP with another Total Order solution, the Primary Backup+VSC replication model. As View Synchronous Communication (VSC) is widely studied, it presents many techniques that can be used in order to update RBP. One of these techniques, called "two views" model is specially interesting because it allow us to take advantage from failure detectors with aggressive timeouts while minimizing the drawbacks from incorrect suspicions. Based on the analysis we ve done, we propose an improved version from the RBP protocol that uses the techniques studied in this work MSc in Computer Science Graduate School in Computer Science, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil. Advisor: Professor Ingrid Jansch-Pôrto Dissertation: Evaluation of Failure Detectors and their Influence on the Consensus Operations Abstract : This work presents our observations and analysis on the influence of the failure detectors on the consensus algorithm. Failure detectors are essential to the consensus over an asynchronous distributed system, as they represent one of the few techniques that are able to circumvent the limitation imposed by the FLP Impossibility (the impossibility to distinguish a crashed process from a slow one, in asynchronous systems). While failure detectors are well defined through two properties, completeness and accuracy, there's no rule about their implementation. Indeed, we only found one work that tried to compare different failure detectors. Using simulation techniques, that work evaluated the impact of the failure detectors on the consensus termination time, although that research was very limited in the number of detectors analysed and in the evaluation goals. The present work extended that experience, including more detectors in the analysis and evaluating them in a practical environment. Also, the observations were not restricted to those from the original paper, and the detectors were analysed with more metrics, failure patterns and operational parameters. The evaluation allowed us to identify the behaviour from the detectors in face of the most significant failure patterns, their influence on the consensus operation and their interaction with the execution environment. These evaluation also enabled us to compare the detectors, identifying their limitations, their best employment situations and possible optimizations to future developments BSc in Computer Science Universidade Federal de Santa Maria (UFSM), Santa Maria, Brazil Professional High School on "Eletrotechnics" Universidade Federal de Santa Maria (UFSM), Santa Maria, Brazil. Awards/Scholarships Brazilian Foundation for the Improvement of Higher Education Personnel (CAPES) Scholarship Brazilian National Council for Scientific and Technological Development (CNPq) Scholarship

3 Teaching Experience February - June 2005 April-June 2005 February 2005 January 2005 Lecturer Institut de Géographie Alpine, Université Joseph Fourier (UJF) Grenoble I, Grenoble, France. Teaching : Introduction to Computer Sciences Undergraduate level (Geography students) 2 groups of 18 hours Supervisor Co-supervision of one student (MSc level) in a network performance modeling research project. Teaching Assistant Ecole Nationale Supérieure de Génie Industriel, Institut National Polytechnique de Grenoble (INPG), Grenoble, France. Teaching : Informatics Project - Java programming Undergraduate level (Industrial Engineering students) 42 hours Teaching assistant CIMENT Project, Université Joseph Fourier (UJF) Grenoble I, Grenoble, France. Teaching : Introduction to Parallel Processing - MPI programming Graduate level (MSc in Biology and Doctoral School in Mathematics and Computer Science) 12 hours Working Experience/Internships Universidade Federal de Santa Maria, Santa Maria, Brazil. Network management and support at the university computer centre. Management/support of AIX, Linux and VM/ESA systems CEEE SA, Santa Maria, Brazil. 6 months internship on construction and maintenance of electrical transformers. Publications International Conferences/Workshops 2004 Barchet-Estefanel, L. A., Mounié, G. "Performance Characterisation of Intra-Cluster Collective Communications". In: Proceedings of the SBAC-PAD th Symposium on Computer Architecture and High Performance Computing, Foz-do-Iguacu, Brazil, IEEE Press, pp , Barchet-Estefanel, L. A., Mounié, G. "Identifying Logical Homogeneous Clusters for Efficient Wide-area Communications". In: Proceedings of the EuroPVM/MPI th European PVM/MPI Users' Group Meeting (2004) Budapest, Hungary, September LNCS vol. 3241, Springer-Verlag, pp , 2004.

4 2004 Barchet-Estefanel, L. A., Mounié, G. "Fast Tuning of Intra-Cluster Collective Communications". In: Proceedings of the EuroPVM/MPI th European PVM/MPI Users' Group Meeting (2004) Budapest, Hungary, September LNCS vol. 3241, Springer-Verlag, pp , Barchet-Estefanel, L. A. "irbp, A Fault Tolerant Total Order Broadcast for Large Scale Systems". In: Proceedings of the 9th International Conference on Parallel Computing (EURO-PAR 2003), University Klagenfurt, Klagenfurt, Austria, August LNCS vol. 2790, Springer-Verlag, pp , Barchet-Estefanel, L. A.; Jansch-Pôrto, I. "On the Evaluation of heartbeat-like Detectors" In: Proceedings of the IEEE 2nd Latin-American Test Workshop, Cancun, México, February 2001, pp National Conferences 2005 Barchet-Estefanel, L. A., Mounié, G. "Prédiction de Performances pour les Communications Collectives" (Performance Prediction for Collective Communications). In: Proceedings of the 16th Rencontre Francophone du Parallélisme (RenPar'16), Le Crosic, France, pp , (language: French) 2001 Barchet-Estefanel, L. A.; Jansch-Pôrto, I. "On the Evaluation of Failure Detectors Performance". In: Proceedings of the IX Simpósio de Computação Tolerante a Falhas (IX SCTF), Florianópolis, Brazil, March 2001, pp Barchet-Estefanel, L. A. "Avaliação Prática do Desempenho dos Detectores de Defeitos" (Practical Evaluation of Failure Detectors Performance) In: Workshop de Teses e Dissertações do IX SCTF, Florianópolis, Brazil, March (language: Portuguese) 2000 Barchet-Estefanel, L. A.; Jansch-Pôrto, I. "Comunicação Não Confiável em Detectores de Defeitos com Falhas por Crash"(Unreliable Communication in Failure Detectors with Crash Faults). In: Proceedings of the II Workshop de Testes e Tolerância a Falhas, Curitiba, Brazil, July (language: Portuguese) Barchet-Estefanel, L. A.; Jansch-Pôrto, I. "Avaliação Prática de um Detector de Defeitos: teoria versus implementação" (Practical Evaluation of a Failure Detector: theory versus implementation). In: Proceedings of the II Workshop de Testes e Tolerância a Falhas, Curitiba, Brazil, July (language: Portuguese) Barchet-Estefanel, L. A. "Avaliação Prática dos Detectores de Defeitos e sua Influência no Desempenho das Operações de Consenso" (Practical Evaluation of Failure Detectors and their Influence on the Consensus Operations Performance). In: Proceedings of the V Semana Acadêmica do PPGC-UFRGS, Porto Alegre, Brazil, July 2000.(language: Portuguese) 1999 Barchet-Estefanel, L. A. "Estudo sobre Comunicação de Grupos para Tolerância a Falhas" (A Survey on Group Communication for Fault Tolerance). In: Proceedings of the IV Simpósio Nacional de Informática, Centro Universitário Franciscano, Santa Maria, Brazil, (language: Portuguese) Thesis/Technical Reports 2002 Barchet-Estefanel, L.A. "Analyzing RBP, a Total Order Broadcast Protocol for Unreliable Channels". Technical Report, Doctoral School in Communication Systems, EPFL, Lausanne, Switzerland, July Barchet-Estefanel, L. A. "Avaliação dos Detectores de Defeitos e sua Influência nas Operações de Consenso" (Evaluation of Failure Detectors and their Influence on the Consensus Operations), Master Thesis, PPGC:UFRGS, Porto Alegre, Brazil, March (language: Portuguese) 2000 Barchet-Estefanel, L. A. "Detectores de Defeitos Não Confiáveis" (Unreliable Failure Detectors). Technical Report, Master in Computer Science, PPGC-UFRGS, Porto Alegre, Brazil, January (language: Portuguese)

5 1999 Barchet-Estefanel, L. A. "CsocketS - Classes para Comunicação de Rede com Autenticação e Criptografia usando Java e CORBA" (CSocketS - Classes for Network Communication with Authentication and Criptography, using Java and CORBA). Bsc. Thesis, UFSM, Santa Maria, Brazil, March (language: Portuguese) Research Services Reviewer for the IEEE Transactions on Parallel and Distributed Systems journal. Reviewer for the 7th IEEE International Conference on High Speed Networks and Multimedia Communications HSNMC'04 (2004). Reviewer for the Fourth International Workshop on Global and Peer-to-Peer Computing (2004). Languages Portuguese: English: French: Italian: Spanish: German: Native speaker Fluent spoken/written Fluent spoken/written Good spoken/written Good understanding Notions Computer Skills Distributed/Parallel tools: Performance Modelling: Software: Programming/Scripting languages: Operating systems: MPI, CORBA, Java RMI LogP, BSP LaTeX, Star Office Certified Professional (Conectiva S.A.) C, C++, Java, Fortran 90, BASIC, Visual Basic, Shell script UNIX (Linux, AIX, Sun-Solaris), VM/ESA, DOS/Windows

6 References Professor Denis Trystram Address: ID-IMAG Laboratory 51 Av. Jean Kuntzmann Montbonnot St. Martin France Professor Grégory Mounié Address: ID-IMAG Laboratory 51 Av. Jean Kuntzmann Montbonnot St. Martin France Professor Ingrid Jansch-Pôrto Address: Instituto de Informática - Universidade Federal do Rio Grande do Sul Av. Bento Gonçalves, 9500 Caixa Postal Porto Alegre RS Brazil Work phone: Fax: Denis.Trystram@imag.fr Work phone: Fax: Gregory.Mounie@imag.fr Work phone: Fax: ingrid@inf.ufrgs.br Further Interests Hobbies Languages, science-fiction, kung-fu (Wing Chun and Tai Chi Chuan), snowboard