Cloud Computing – Issues,
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Mladen A. Vouk
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Introduction
“Cloud computing” is the next natural step in
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puting embraces cyberinfrastructure, and builds
|
the evolution of on-demand information tech-
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upon decades of research in virtualization, dis-
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nology services and products. To a large extent,
|
tributed computing, “grid computing”, utility
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cloud computing will be based on virtualized
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computing, and, more recently, networking,
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resources.
|
web and software services. It implies a service-
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Cloud computing predecessors have been around
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oriented architecture, reduced information tech-
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for some time now [1, 12, 15, 17, 18, 24, 29, 30,
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nology overhead for the end-user, greater flex-
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35, 40], but the term became “popular” some-
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ibility, reduced total cost of ownership, on-
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time in October 2007 when IBM and Google an-
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demand services and many other things.
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nounced a collaboration in that domain [27, 22].
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This was followed by IBM’s announcement of
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the “Blue Cloud” effort [23]. Since then, every-
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2.1. Cyberinfrastructure
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one is talking about “Cloud Computing”. Of
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course, there also is the inevitable Wikipedia
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“Cyberinfrastructure makes applications dra-
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entry [45].
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matically easier to develop and deploy, thus
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expanding the feasible scope of applications
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This paper discusses the concept of “cloud”
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possible within budget and organizational con-
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computing, some of the issues it tries to address,
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related research topics, and a “cloud” imple-
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straints, and shifting the scientist’s and engi-
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mentation available today. Section 2 discusses
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neer’s effort away from information technology
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concepts and components of “cloud” comput-
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development and concentrating it on scientific
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ing. Section 3 describes an implementation
based on Virtual Computing Laboratory (VCL)
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“Cloud”
computing – a relatively recent term, builds on
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decades
of research in virtualization, distributed com-
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technology. VCL has been in production use at
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puting,
utility computing, and more recently networking,
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NC State University since 2004, and is a suitable
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web
and software services. It implies a service oriented
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vehicle for dynamic implementation of almost
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architecture,
reduced information technology overhead
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for
the end-user, great flexibility, reduced total cost of
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any current “cloud” computing solution. Sec-
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ownership,
on-demand services and many other things.
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tion 4 discusses “cloud”-related research and
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This
paper discusses the concept of “cloud” computing,
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engineering challenges. Section 5 summarizes
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some
of the issues it tries to address, related research
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and concludes the paper.
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Cloud Computing
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A key differentiating element of a successful
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information technology (IT) is its ability to be-
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1. Introduction
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come a true, valuable, and economical contrib-
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utor to cyberinfrastructure [4]. “Cloud” com-
|
“Cloud computing” is the next natural step in
|
puting embraces cyberinfrastructure, and builds
|
the evolution of on-demand information tech-
|
upon decades of research in virtualization, dis-
|
nology services and products. To a large extent,
|
tributed computing, “grid computing”, utility
|
cloud computing will be based on virtualized
|
computing, and, more recently, networking,
|
resources.
|
web and software services. It implies a service-
|
Cloud computing predecessors have been around
|
oriented architecture, reduced information tech-
|
for some time now [1, 12, 15, 17, 18, 24, 29, 30,
|
nology overhead for the end-user, greater flex-
|
35, 40], but the term became “popular” some-
|
ibility, reduced total cost of ownership, on-
|
time in October 2007 when IBM and Google an-
|
demand services and many other things.
|
