Distributed Cloud Computing

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Topics: Cloud computing
Chapter 1
INTRODUCTION
1.1 Distributed System: Distributed computing is a field of computer science that studies distributed systems. A distributed system consists of multiple computers that communicate through a computer network. The computers interact with each other in order to achieve a common goal. A computer program that runs in a distributed system is called a distributed program, and distributed programming is the process of writing such programs.
Distributed computing also refers to the use of distributed systems to solve computational problems. In distributed computing, a problem is divided into many tasks, each of which is solved by one or more computers, which communicate with each other by message passing.
The word distributed in terms such as "distributed system", "distributed programming", and "distributed algorithm" originally referred to computer networks where individual computers were physically distributed within some geographical area. The terms are nowadays used in a much wider sense, even referring to autonomous processes that run on the same physical computer and interact with each other by message passing. While there is no single definition of a distributed system, the following defining properties are commonly used. * There are several autonomous computational entities, each of which has its own local memory. * The entities communicate with each other by message passing.In this article, the computational entities are called computers or nodes.
1.2 Cloud Computing: When you store your photos online instead of on your home computer, or use webmail or a social networking site, you are using a “cloud computing” service. If you are an organization, and you want to use, for example, an online invoicing service instead of updating the in-house one you have been using for many years, that online invoicing service is a “cloud computing” service. Cloud computing refers to the delivery of computing resources over the Internet. Instead



References: [1]Chen, T.M. ,” A model and evaluation of distributed network management approaches”, in IEEE Journal published in may 2002, Volume: 20, Page(s): 850 – 857. [2] Garcia, J. ,” Reconfigurable distributed network control system for industrial plant automation”, in IEEE Transactions published in Dec. 2004, Volume: 51, Page(s): 1168 – 1180. [3] Dikaiakos, M.D,” Cloud Computing: Distributed Internet Computing for IT and Scientific Research”, in Internet Computing published in Sept.-Oct. 2009, Volume: 13 , Page(s): 10 – 13. [4] Gao Xin-cheng ,” Mass data storage system for campus network based on cloud computing”,in International  Conference on  published in 14-17 July 2012, Page(s): 226 – 230. [5] Suzuki, K. ,” network system with cloud computing and distributed autonomous control”, in International  Symposium on published in 4-6 June 2012, Page(s): 1 – 6.

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