Keynotes

SBESC 2011

Keynote 1: Managing the Performance of Large, Distributed Systems

Scott Brandt

Computer Science Department University of California at Santa Cruz

Santa Cruz, CA - USA Email: scott@cs.ucsc.edu

Abstract – Real-time control and performance guarantees have traditionally been implemented in isolated purpose-built systems. New applications and systems demand performance guarantees in open, shared, distributed environments where not everything is known a priori and many unrelated applications may be competing for resources. This talk explores the problem of guarantees in open, distributed systems, presents a few examples of such systems, and discusses research at UC Santa Cruz aimed at addressing the problem. Biografia: Dr. Scott A. Brandt é Professor de Ciência da Computação na Universidade da Califórnia, em Santa Cruz. Ele também é o diretor do Laboratório de Pesquisas de Sistemas da UCSC, co-fundador do Centro de Pesquisas em Sistemas de Armazenamento, na mesma universidade, e co-fundador do Instituto UCSC/Los Alamos para o Gerenciamento Escalável de Dados Científicos. O Dr. Brandt especializou-se em sistemas de armazenamento e de tempo real e, mais recentemente, em gerenciamento do desempenho de sistemas e armazenamento. Seu foco de pesquisa é a integração de processamento tempo real, e não de tempo real em um ambiente uniforme de processamento.

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Keynote 2: Software Synthesis for Embedded Multicore Systems

Andreas Gerstlauer

Department of Electrical and Computer Engineering University of Texas at Austin

Austin, TX - USA Email: gerstl@ece.utexas.edu

Abstract – The continued exponential increase in embedded system complexities, driven by both technological advances and ever growing application demands, has led to system designs that incorporate more and more processing cores, often on a single chip. Furthermore, their application-specific nature and operation under tight power, real-time, reliability and cost constraints gives us both the opportunity and need to develop highly optimized, heterogeneous and customized solutions. At the same time, prohibitive hardware design and manufacturing costs increasingly ask for programmable platforms in which most of the functionality, optimality and differentiation is delivered through embedded software running on a heterogeneous multi-core and multi-processor architecture. Together, complexity and heterogeneity challenges clearly make traditional embedded software development practices infeasible, and embedded software is rapidly becoming the bottleneck for meeting performance, power, cost, reliability and time-to-market/productivity constraints. Existing approaches for manual programming of individual processors directly at a low level close to hardware will not scale to tens or hundreds of cores and novel embedded software development methodologies are urgently needed. In this keynote, we aim to provide a comprehensive introduction to state-of-the-art techniques for automated synthesis of embedded multi-core/-processor software from high-level, abstract input specifications. Key to the automation of any design process are appropriate and effective models. On the one hand, this includes the search for the right parallel and real-time programming models at the input of the synthesis process. We will discuss various models of computation (MoCs) in terms of their support for concurrency and communication, including implications on expressability and synthesizability. On the other hand, at the output of the design flow, there is a need for fast and accurate virtual prototypes that allow for efficient pre-silicon validation of the effects of design decisions on system implementations. We will present an overview of platform modelling and simulation at varying levels of abstraction based on transaction-level models (TLMs) of communication and host-compiled or instruction-set simulation of software execution. Lastly, the tutorial will describe how models can be integrated into a seamless, automated synthesis flow that includes optimized mapping of applications onto architectures, rapid and early exploration of the design space and fully automatic generation of platform target Biografia: Dr. Andreas Gerstlauer é Professor Assistente de Engenharia Elétrica e de Computação na Universidade do Texas, em Austin. Antes de entrar na UT Austin em 2008, ele foi Pesquisador Assistente no Centro de Sistemas Computacionais Embutidos (CECS) na UC Irvine, onde liderou um grupo de pesquisa no desenvolvimento de ferramentas de projeto em nível de sistema (ESL). Os derivados comerciais dessas ferramentas estão sendo utilizados pela Agência Espacial Japonesa (JAXA,) e pela NEC Toshiba Space Systems, entre outros. Os interesses de pesquisa do Dr. Gerstlauer incluem automação de projeto em nível de sistema (ESL), modelagem de sistemas, linguagens e metodologias para design, e síntese de hardware e software embarcados.

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Keynote 3: Current Trends in Operating Systems Research

Dilma da Silva

IBM T. J. Watson Research Center Yorktown Heights, NY - USA

Email: dilmasilva@us.ibm.com

Abstract – This keynote addresses the current research trends in Operating Systems that were discussed during the ACM SOSP (Symposium on Operating Systems Principles), which occurred last October in Portugal. It will also be provided a critical review of those papers rewarded with the Best Paper Price. Biografia: Dilma da Silva is a researcher at the IBM T. J. Watson Research Center, in New York. She manages the Advanced Operating Systems group and is also Principal Investigator in the Exascale Collaboratory in Ireland. She received her Ph.D in Computer Science from Georgia Tech in 1997. Prior to joining IBM, she was an Assistant Professor at University of Sao Paulo, Brazil. Her research in operating systems addresses the need for scalable and customizable system software. Her current focus is on cloud computing. She has published more than 70 technical papers. Dilma is a member of the board of CRA-W (Computer Research Association's Committee on the Status of Women in Computing Research), of the CDC (Coalition for Diversifying Computing), a co-founder of the Latinas in Computing group, and treasurer/secretary for ACM SIGOPS. More information is available at www.research.ibm.com/people/d/dilma

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Keynote 4: Towards Trustworthy Systems

Gernot Heiser

School of Computer Science and Engineering University of California

The University of New South Wales Sydney, Australia

Email:gernot@nicta.com.au

Abstract – Computer systems are routinely deployed in life- and mission- critical situations, yet in most cases their security, safety or dependability cannot be assured to the degree warranted by the application. In other words, trusted computer systems are rarely trustworthy. We believe that this is highly unsatisfactory, and have embarked on a research program aimed at bringing reality in line with expectations. In this talk describes NICTA’s research agenda for achieving true trustworthiness in systems. The approach combines systems with formal methods and is based on establishing the trustworthiness of the lowest level of software, a small microkernel or hypervisor, and then using this platform to provide guarantees to complete systems built on top. A number of important steps in this direction have been achieved, specifically the formal proof of functional correctness of a complete OS microkernel, and subsequently the establishment of further properties, including timeliness and integrity enforcement. Work is progressing on making dependability guarantees for complete real-world systems, comprising millions of lines of code. Biografia: Dr. Gernot Heiser é Scientia Professor e ocupa a cátedra John Lions de Sistemas Operacionais na Escola de Ciência da Computação e Engenharia na Universidade de Nova Gales do Sul, em Sydney, na Austrália. Ele é líder do ERTOS, Grupo de Pesquisa em Sistemas Operacionais Embarcados no NICTA - Centro de Pesquisa de Excelência Australiano em Tecnologia da Informação e Comunicação, fundador e diretor da Open Kernel Labs (OK Labs), líder mundial em tecnologia de virtualização para sistemas embarcados. A principal tarefa de Dr. Heiser é liderar a equipe ERTOS na produção de uma mudança qualitativa na prática de sistemas embarcados, tornando os sistemas "confiáveis" verdadeiramente dignos de confiança.

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