Architecting Dynamic Reconfiguration in Dependable Systems

Gomes, Antônio Tadeu A.; Batista, Thaís; Joolia, Ackbar; Coulson, Geoff

doi:10.1007/978-3-540-74035-3_11

Cited by 13 publications

(8 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Regarding approches that advocate model-driven reconfigurations [14][13] [15] [19][21] [27], the focus is mainly on on the capture of application-specific architectural constraints, mostly through the use of architectural styles [16] [26]. Complementary to the architectural constraints that we consider in this paper, application-specific constraints do not require to be incrementally preserved during a reconfiguration, they only need to be preserved by the target architecture.…”

Section: Related Workmentioning

confidence: 99%

See 1 more Smart Citation

Robust reconfigurations of component assemblies

Boyer

Gruber

Pous

2013

2013 35th International Conference on Software Engineering (ICSE)

View full text Add to dashboard Cite

In this paper, we propose a reconfiguration protocol that can handle any number of failures during a reconfiguration, always producing an architecturally-consistent assembly of components that can be safely introspected and further reconfigured. Our protocol is based on the concept of Incrementally Consistent Sequences (ICS), ensuring that any reconfiguration incrementally respects the reconfiguration contract given to component developers: reconfiguration grammar and architectural invariants. We also propose two recovery policies, one rolls back the failed reconfiguration and the other rolls it forward, both going as far as possible, failure permitting. We specified and proved the reconfiguration contract, the protocol, and recovery policies in Coq.

show abstract

Section: Related Workmentioning

confidence: 99%

“…A component may indeed fail to successfully apply a reconfiguration operation. To face this limitation, [13] [14] [19] advocate a rollback strategy based on inverse operations. However, this approach only tolerates a single failure since the rollback only succeeds if all inverse operations succeed.…”

Section: Introductionmentioning

confidence: 99%

Robust reconfigurations of component assemblies

Boyer

Gruber

Pous

2013

2013 35th International Conference on Software Engineering (ICSE)

View full text Add to dashboard Cite

show abstract

“…for a sequential component the selected algorithm whereas for a parallel computation the exploited parallelism scheme). The actual system configuration can be modified by exploiting dynamic reconfiguration activities classified in four general categories (Arshad et al, 2007;Gomes et al, 2007;Hillman & Warren, 2004;Tsai et al, 2007;Vanneschi & Veraldi, 2007):…”

Section: Related Workmentioning

confidence: 99%

Developing Real-Time Emergency Management Applications: Methodology for a Novel Programming Model Approach

Mencagli¹,

Vanneschi²

2012

Emergency Management

View full text Add to dashboard Cite

The last years have been characterized by the arising of highly distributed computing\ud \ud platforms composed of a heterogeneity of computing and communication resources including\ud \ud centralized high-performance computing architectures (e.g. clusters or large shared-memory\ud \ud machines), as well as multi-/many-core components also integrated into mobile nodes\ud \ud and network facilities. The emerging of computational paradigms such as Grid and Cloud\ud \ud Computing, provides potential solutions to integrate such platforms with data systems, natural\ud \ud phenomena simulations, knowledge discovery and decision support systems responding to a\ud \ud dynamic demand of remote computing and communication resources and services.\ud \ud In this context time-critical applications, notably emergency management systems, are\ud \ud composed of complex sets of application components specialized for executing specific\ud \ud computations, which are able to cooperate in such a way as to perform a global goal in a\ud \ud distributed manner. Since the last years the scientific community has been involved in facing\ud \ud with the programming issues of distributed systems, aimed at the definition of applications\ud \ud featuring an increasing complexity in the number of distributed components, in the spatial\ud \ud distribution and cooperation between interested parties and in their degree of heterogeneity.\ud \ud Over the last decade the research trend in distributed computing has been focused on\ud \ud a crucial objective. The wide-ranging composition of distributed platforms in terms of\ud \ud different classes of computing nodes and network technologies, the strong diffusion of\ud \ud applications that require real-time elaborations and online compute-intensive processing as\ud \ud in the case of emergency management systems, lead to a pronounced tendency of systems\ud \ud towards properties like self-managing, self-organization, self-controlling and strictly speaking\ud \ud adaptivity.\ud \ud Adaptivity implies the development, deployment, execution and management of applications\ud \ud that, in general, are dynamic in nature. Dynamicity concerns the number and the specific\ud \ud identification of cooperating components, the deployment and composition of the most\ud \ud suitable versions of software components on processing and networking resources and\ud \ud services, i.e., both the quantity and the quality of the application components to achieve\ud \ud the needed Quality of Service (QoS). In time-critical applications the QoS specification\ud \ud can dynamically vary during the execution, according to the user intentions and the\ud \ud Developing Real-Time Emergency\ud \ud Management Applications: Methodology for\ud \ud a Novel Programming Model Approach\ud \ud Gabriele Mencagli and Marco Vanneschi\ud \ud Department of Computer Science, University of Pisa, L. Bruno Pontecorvo, Pisa\ud \ud Italy\ud \ud 2\ud \ud 2 Will-be-set-by-IN-TECH\ud \ud information produced by sensors and services, as well as according ...

show abstract

“…Além de seu potencial sócio-econômico, o sistema tem-se mostrado um excelente caso de uso, permitindo a análise de técnicas avançadas de especificação arquitetural [3], bem como apontando dificuldades práticas na codificação de aspectos -como aquelas encontradas na funcionalidade de criptografia nos Web Services da Central de Regulação.…”

Section: Conclusõesunclassified

Suporte remoto ao atendimento médico emergencial de vítimas de infarto via dispositivos móveis

Viçoso

Teixeira

Gomes

et al. 2008

Companion Proceedings of the XIV Brazilian Symposium on Multimedia and the Web

Self Cite

View full text Add to dashboard Cite

This paper presents the main design decisions and current implementation status of a mobile, Web-based system for supporting cardiologists and paramedics in the remote decision upon the eligibility of Acute Myocardial Infarction patients to therapeutic therapy.This system allows delivering specialized assistance to the location where emergency teams first reach these patients. RESUMOEste artigo apresenta as principais decisões de projeto e o estado atual de implementação de um sistema Web de suporte remotoà decisão para o tratamento terapêutico de pacientes com Infarto Agudo do Miocárdio (IAM). Esse sistema leva o conhecimento de um especialista, através de tecnologias de comunicação sem fio, até o local onde o paciente com IAM recebe seu primeiro atendimento por uma equipe de emergência. Esse sistema vem sendo desenvolvido por bolsistas de iniciação científica do LNCC/MCT, em parceria com a Faculdade de Medicina da UFRJ e o SAMU/192 do município do Rio de Janeiro. 1. INTRODUÇÃO O Infarto Agudo do Miocárdio (IAM) está entre os líderes das causas de morte e incapacitação física em todo o mundo. Pesquisas médicas recentes em cardiologia [6] mostram que o tratamento terapêutico com trombolíticos -fármacos que permitem a desobstrução arterial -reduz a mortalidade e facilita a recuperação do paciente, além de ser menos custoso em comparação com procedimentos cirúrgicos. Contudo, para aumentar sua eficácia, esse tratamento deve ocorrer, em geral, entre 30 a 90 minutos após o aparecimento dos primeiros sintomas de IAM [1], e só pode ser ministrado mediante uma análise prévia de elegibilidade do paciente de * Bolsistas de Iniciação Científica † Orientadores IAM. Essa análise deve ser conduzida por um especialista, porém, no cenário típico o primeiro atendimento ocorre em unidades de emergência, por médicos generalistas. O sistema AToMS (AMI Teleconsultation & Monitoring System)é um sistema Web de telemedicina que oferece um serviço de suporte remotoà decisão de tratamento com trombolíticos em pacientes com IAM. Esse sistema leva, através de tecnologias de comunicação sem fio, o conhecimento de um especialista até o local onde o paciente com IAM recebe seu primeiro atendimento por uma equipe de emergência. Assim, reduz-se o tempo entre o aparecimento dos sintomas de IAM e a aplicação do trombolítico, aumentando o sucesso dessa intervenção. Toda informação trocada entre os profissionaisé registrada em uma Central de Regulação, permitindo ações de auditoria e estudos epidemiológicos. Por fim, o uso de tecnologia sem fio permite que um paciente seja monitorado continuamente durante a sua remoção para uma unidade coronariana. Em trabalhos anteriores foram apresentadas uma visão geral do sistema AToMS [4] e algumas considerações sobre o uso de abordagens orientadas a aspectos [5] na especificação arquitetural do mesmo [2]. O objetivo do presente trabalhó e apresentar em detalhes as principais decisões de projeto e o estado atual de implementação desse sistema. ARQUITETURA DO SISTEMA ATOMSA Figura 1 apresenta uma visão geral da...

show abstract

Architecting Dynamic Reconfiguration in Dependable Systems

Cited by 13 publications

References 26 publications

Robust reconfigurations of component assemblies

Robust reconfigurations of component assemblies

Developing Real-Time Emergency Management Applications: Methodology for a Novel Programming Model Approach

Suporte remoto ao atendimento médico emergencial de vítimas de infarto via dispositivos móveis

Contact Info

Product

Resources

About