@PhDThesis{Leonor:2017:AmEsAl,
author = "Leonor, Bruno Bustamante Ferreira",
title = "Sentinel: ambiente e-science de alto desempenho para gerenciamento
e monitoramento de aplica{\c{c}}{\~o}es cient{\'{\i}}ficas",
school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
year = "2017",
address = "S{\~a}o Jos{\'e} dos Campos",
month = "2017-08-11",
keywords = "e-Science. HPC. containers. workflow cient{\'{\i}}fico. clima
Espacial. e-Science. HPC. containers. scientific workflow. space
weather.",
abstract = "Mediante um paradigma de e-Science, a computa{\c{c}}{\~a}o vem
revolucionando o modo como diversas {\'a}reas
cient{\'{\i}}ficas conduzem suas pesquisas. Para realizar
simula{\c{c}}{\~o}es/pesquisas, existem diversos sistemas que
lidam com uma enorme quantidade de vari{\'a}veis que podem exigir
v{\'a}rios c{\'a}lculos e recursos computacionais de alto
desempenho. Entretanto, h{\'a} a necessidade de se lidar
eventualmente com quest{\~o}es de interoperabilidade e
execu{\c{c}}{\~a}o de workflows cient{\'{\i}}ficos caso a
caso. Motivada pelo crescimento explosivo do volume de dados,
abordagens em e-Science v{\^e}m sendo adotadas como apoio na
resolu{\c{c}}{\~a}o de problemas pr{\'a}ticos e de pesquisa. A
proposta desta pesquisa {\'e} a cria{\c{c}}{\~a}o de uma
solu{\c{c}}{\~a}o de e-Science chamada Sentinel que permite a
pesquisadores o gerenciamento e monitoramento de experimentos
cient{\'{\i}}ficos. Isto fornece mecanismos que possibilitam a
inclus{\~a}o de novas aplica{\c{c}}{\~o}es e total controle
sobre todos os seus experimentos cadastrados, concentrando toda
sua pesquisa em um s{\'o} lugar. As caracter{\'{\i}}sticas
desejadas para o ambiente foram identificas a partir de um
levantamento e compara{\c{c}}{\~a}o de diversas ferramentas
utilizadas no meio cient{\'{\i}}fico e alguns
apontamentos/cr{\'{\i}}ticas feitos por usu{\'a}rios.
Atrav{\'e}s de um Portal Web, o Sentinel fornece um ambiente em
nuvem para apoiar os pesquisadores em seus estudos que
poder{\~a}o ser acessados atrav{\'e}s de qualquer dispositivo
habilitado para acessar a web. Para eximir do pesquisador a
necessidade de conhecimento do ambiente computacional a ser
utilizado, seus experimentos s{\~a}o executados em uma plataforma
de conteineriza{\c{c}}{\~a}o que trata os aspectos de
interoperabilidade e concatena{\c{c}}{\~a}o de workflows
cient{\'{\i}}ficos. A infraestrutura computacional utilizada
para demonstra{\c{c}}{\~a}o deste projeto {\'e}
constitu{\'{\i}}da basicamente de microcomputadores Raspberry Pi
3 model B. Esta solu{\c{c}}{\~a}o {\'e} interessante pelo seu
baixo custo e recursos oferecidos, podendo ser associados outros
recursos de hardware sempre que necess{\'a}rio. Com um estudo de
caso voltado ao Clima Espacial, o m{\'e}todo DFA (An{\'a}lise de
Flutua{\c{c}}{\~a}o Destendenciada) foi aplicado {\`a}s medidas
de irradia{\c{c}}{\~a}o solar (TSI) obtidas entre 1978 e 2012. O
Clima Espacial foi escolhido devido {\`a} sua relev{\^a}ncia nas
condi{\c{c}}{\~o}es e nos processos que ocorrem no espa{\c{c}}o
que potencialmente afetam o ambiente pr{\'o}ximo {\`a} Terra,
seres humanos e seus ativos tecnol{\'o}gicos. No Brasil, os
estudos nesta {\'a}rea s{\~a}o dirigidos pelo programa EMBRACE
(Estudos e Monitoramento Brasileiro do Clima Espacial) do INPE
(Instituto Nacional de Pesquisas Espaciais). Durante a
execu{\c{c}}{\~a}o dos experimentos criados dentro do estudo de
caso proposto, o ambiente Sentinel apresentou-se consistente e
est{\'a}vel entre as execu{\c{c}}{\~o}es locais e as
conteinerizadas. Finalmente, a abordagem adotada {\'e} geral o
bastante para ser estendida a outros dom{\'{\i}}nios de
aplica{\c{c}}{\~a}o uma vez que permite a defini{\c{c}}{\~a}o
pr{\'e}via de um workflow cient{\'{\i}}fico. ABSTRACT: Through
an e-Science paradigm computing has revolutionized the way in
which diverse scientific areas conduct their research. To perform
simulations/surveys there are several systems that deal with a
huge amount of variables that may require various calculations and
high performance computational resources. However, there is a need
to eventually address issues of interoperability and execution of
scientific workflows on a case-by-case. Motivated by the explosive
growth of data volume, approaches in e-Science have been adopted
as support in solving practical and research problems. The
proposal of this research is the creation of an e-Science solution
called Sentinel that allows researchers to manage and monitor
scientific experiments. This provides mechanisms that allow the
inclusion of new applications and total control over all your
registered experiments, concentrating all your research in one
place. The characteristics desired for the environment were
identified from a survey and comparison of several tools used in
the scientific environment and some notes/criticisms made by
users. Through a Web Portal, Sentinel provides a cloud environment
to support researchers in their studies that can be accessed
through any device enabled to access the web. In order to exempt
the researcher from the need to know the computational environment
to be used, his experiments are executed in a containerization
platform that deals with the interoperability and concatenation
aspects of scientific workflows. The computational infrastructure
used to demonstrate this project consists basically of Raspberry
Pi 3 model B microcomputers. This solution is interesting because
of its low cost and features offered, and other hardware resources
can be associated whenever necessary.With a case study focused on
the SpaceWeather, the DFA method was applied to the measurements
of solar irradiation (TSI) obtained between 1978 and 2012. The
Space Weather was chosen because of its relevance in the
conditions and processes that occur in space that potentially
affect the environment close to Earth, humans and their
technological assets. In Brazil, studies in this area are
conducted by the EMBRACE (Brazilian Space Weather Studies and
Monitoring) program of INPE (National Institute of Space
Research). During the execution of the experiments created within
the proposed case study, the Sentinel environment was consistent
and stable between local and containerized executions. Finally,
the approach adopted is general enough to be extended to other
application domains since it allows the prior definition of a
scientific workflow.",
committee = "Stephany, Stephan (presidente) and Rosa, Reinaldo Roberto
(orientador) and Santos, Walter Abrah{\~a}o dos (orientador) and
Ferreira, Maur{\'{\i}}cio Gon{\c{c}}alves Vieira and Almeida,
Eug{\^e}nio Sper de and Almeida, Luis Fernando de and Dantas,
Murilo da Silva",
englishtitle = "Sentinel: a high performance e-science environment for management
and monitoring scientific applications",
language = "pt",
pages = "203",
ibi = "8JMKD3MGP3W34P/3PBTFSH",
url = "http://urlib.net/ibi/8JMKD3MGP3W34P/3PBTFSH",
targetfile = "publicacao.pdf",
urlaccessdate = "27 abr. 2024"
}