《浅谈云计算(英文版).doc》由会员分享，可在线阅读，更多相关《浅谈云计算(英文版).doc（47页珍藏版）》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。
1、Four short words sum up what has lifted most successful individuals above the crowd: a little bit more.-author-date浅谈云计算(英文版)浅谈云计算(英文版) A Review Of Cloud Computing Team members：许慧平赵曼刘强 罗宾2012年3月22日 A Review Of Cloud Computing Abstract:cloud computing is a kind of super calculation mode based on Inte
2、rnet. For the category of cloud computing ,this paper concludes the concept of cloud computing , emerging background, the present main applications, the future development of the prospect and the presents problems.Keywords: cloud computing; data processing; distributed computing; Internet1. Producin
3、g of Cloud Computing 1.1 what is cloud computingThe producing of Cloud computing has a big background inevitability.First,the development of Communication and Internet is faster than the development of Computer .That situation offers a soil for growing of Cloud computer.Second, Software engineering
4、changed the way of faceing the service such as facing machine,language and middleware into the way of facing service and need.That made SAAS（SoftwareasaService）to come true.Third, the users beginning to pay close attention to core business more and more.They dont need to become a real “Amateur engin
5、eers”.It is what the Cloud computer brought the important changing on the way of using IT facility for users.Cloudcomputingisaresourcedeliveryandusagemodel,itmeansgetresource(Hardware,software)vianetwork.ThenetworkofprovidingresourceiscalledCloud.ThehardwareresourceintheCloudseemsscalableinfinitelya
6、ndcanbeusedwhenever. 1.2 The principle of cloud computing1.2.1 three method of calculation:Parallel processingParallel processing computer system can perform a calculation of two or more processors. Processors can work simultaneously on different aspects of the same program. For the use of parallel
7、processing,it can be said of a program executed on n processors speed may be performed on a single processor speed n times.Distributed processingDistributed processing system will be in different locations or multiple computers with different functions or different data communications network linkin
8、g under the control of the control system of unified management and coordination to complete the computer system for information processing tasks.Grid computingGrid computing is accompanied by the Internet and the rapid development of the new computing model, specifically for complex scientific calc
9、ulations. This computing model is the use of the Internet dispersed geographically computer organization into a virtual supercomputer, each of which involved in the calculation computer is a node, the entire calculation is made up of thousands nodes consisting of a grid, so this method of calculatio
10、n is called grid computing.What cloud computing is? Cloud computing is an emerging business computing model.Specifically, Cloud Computing is a kind of distributed processing,parallel processing and grid computing development, or commercial implementation of these computer science concepts The transm
11、ission capacity of the high-speed Internet, data processing process from a personal computer or server to a cluster of computers on the Internet., This is a revolutionary move, the analogy, which is like a shift from the old single-generator mode to the mode of the power plant centralized power supp
12、ly. It means that computing power as a commodity circulation, like gas, water and electricity, like, access to convenient, low-cost. For example it! Our computing model is most locally installed software, and then exchange data with the server through local processing, cloud computing, we do not nee
13、d local processing, just use the browser.After understanding of what cloud computing, let us understand some of the other cloud computing.Cloud Computing ArchitectureMost of the cloud computing infrastructure is transmitted through the data center a reliable service and the different levels of virtu
14、alization technology on the server. People can use these services in any network infrastructure.Cloud serverCloud server is a set of clustered servers on virtual quasi-independent part of the server, cluster, each server has a mirror image of the cloud server.Also cloud computing is similar with VPS
15、 server virtualization technology, cloud server is a VPS is a virtual software, the VZ or VM on a single server virtual quasi-independent part of the server, each part can be done to separate the operating system, management methods the same server.1.2.2 The core technology of cloud computing1) Prog
16、ramming model. For large-scale data sets (greater than 1TB) parallel computing. Strict programming model that makes cloud computing programming environment is very simple.2) Huge amounts of data distributed storage technology. Cloud computing system consists of a large number of servers, as well as
17、a large number of users, cloud computing system uses the stored data of distributed storage, redundant storage to ensure data reliability.3) Huge amounts of data management technology. Cloud computing on the distribution of vast amounts of data processing, analysis, data management technology necess
18、ary to efficiently manage large amounts of data.Virtualization technology. Virtualization technology enables software applications and the underlying hardware isolation, which includes a single resource is divided into multiple virtual resources splitting mode, including the integration of multiple
19、resources into a virtual resource aggregation mode. Abstract the server physical resources into logical resource, allows a single server into several virtual servers or even hundreds of isolated, we are no longer limited by physical boundaries, but the CPU, memory, disk I / O hardware into a dynamic
20、 management of the resource pool, to improve resource utilization, simplify systems management, server consolidation, IT business change more resilient.2.1 The application area of Cloud ComputingAs well known,a new technology is invented is to meet the needs of the application.And the technology wil
21、l also continuously improve and develop with the needs of the application.So is the Cloud Computing.Cloud computing are able to be applied because of its mass of data processing power and efficient computational ability.But Owing to the cloud computing started late,now a lot of application are still
22、 in studying stage.Thus,I only plan to introduce some applications which have used as following.2.1.1 Scientific researchThere are three major applications in scientific research,namely earthquake monitoring,marine information monitoring and astronomy calculation information processing.These applica
23、tions need to combine with sensor technology.Such as temperature transmitter,depth sensor.The sensors are used to collect signal and convert to voltage signal,then send them to Cloud computing servers through Internet to process and store.We can get from the servers when needed at any time.Because t
24、he information is of large amount,it need high speed powerful computer to process,now the Cloud is used on.This is the major using of Cloud.2.1.2 Network SecurityNetwork security is now a very popular topic.Especially the network virus is growing rapidly.So virus library storage is a major concern.C
25、loud mass data storage capacity can meet the need.For example,Rising Cloud Security plan,its working principle is as follows.The client can be automatically to connect to the server and scanning users PC,then send the suspicious objects to servers to match and return the result in seconds.The server
26、s will warn the client to deal with the object if the object is virus.Another using is the Spam shielding which is also used the cloud mass data storage capacity.2.1.3 MedicineDNA information storage is the best reflecttion of the mass data storage of cloud.1.3 billion people in the world with uniqu
27、e DNA information need to store and analysis.We must have enough room to store the information and access to it at any time.The Cloud is used to achieve it.And its also applied to cases storage which can help to achieve global medical integration.Besides,medical image processing is also a important
28、application.2.1.4 InternetNow the most important applications of network is retrieval service.But the mass of information stored in the servers.In order to get what the user wanted,the Internet suppliers must supply fast and efficient algorithm to screening best matched information.Thus the clouds e
29、fficient computing power is used to do it.For example,Google Cloud computing platform is put forward just to implement efficient retrieval function at first.And E-mail server and online real-time translation are also used on Cloud. 2.1.5 The radio and television industry applicationThis application
30、only on ideas stage now and it has not come into use.The idea is big cable companys can establish a Cloud computing platform together to meet their need to make high definition and high quality audio.At the same time,a litter cable companys also want to make some high quality audio,but they can not
31、afford to the high configured equipments.So the big cable companys can spare some idle resources to the litter ones which needed.In this way,not only can they meet their own need,but also can they make fully use of their resources.Otherwise,now some sensitive information like radio and video need la
32、rge mount of space to store,so we can store them to the Cloud which has mass data storage capacity.2.2 The four famous Cloud service platformsActually, the Cloud Computing research by academic is much earlier than the proposal of its concept.We ,the Chinese researchers,have had the transparent Compu
33、ting idea before the emergence of the term which is called Cloud Computating.Transparent cloud computing embodies the characteristics of cloud computing,that is dynamic resource pools, virtualization, transparent to the user etc.At present,industry to provide cloud computing that not many companies.
34、And more influential platforms have Google Cloud computing platform, IBM Blue Cloud platform,Amazon Elastic Compute Cloud(EC2) platform and Microsoft Azure computing platform.2.2.1 Amazon EC2 platformAmazon is a E-commerce company which is the earliest to supply Cloud computing service.Every day a h
35、uge amount of business transactions require a huge amount of data centers to improve the availability of services, which may cause the waste of idle computing resources and network resources.In order to improve the efficiency, Amazon set up the EC2 platform.Customers can be provided by EC2 web serve
36、r interface to create the virtual machine to run their applications so as to realize the deployment of the scalability, the user on-demand instant pay.In this way,for ISP not only can they meet their own need,but also solve the problem of wastage of resources and make resources the most efficiently
37、used.To the customers,Both saved the high cost of high performance hardware configuration, also can call charges minimum cost but it can get the best service to the forehead.2.2.2 Search engineWith Googles cloud computing platforms for representative.Search engine is a system to provide users with r
38、etrieval service,which refers to certain strategy, using specific computer program search of information on the Internet, in information for organization and processing, and will show to users after processing the information .In Web1.0 era, information on the Internet without so much now, users nee
39、d to guide to browse information.And now, with the Internet information explosive growth, there is a large amount of information required to store and for the user to browse, users need from the vast amount of information they want to extract useful information, must depend on the search engine to f
40、ind, so the cloud computing is put on the agenda.In order to be able to retrieve the mass information in the user need useful information, there must be quick optimization retrieval algorithm to solve the communication between the server and writing problems, and complete the rapid and effective inf
41、ormation retrieval functions.The client can provide the key word to search for clouds of the computer, the computer through mutual cooperation assigned tasks to complete the information to the retrieval, and then returned to the user of the client, it will be faster and more effective than PC direct
42、ly to the server request data retrieval.2.2.3 Microsoft Azure cloud computing platformWindows Azure is a cloud service operating system, providing developers with the need to use the calculation and storage resources.Azure cloud platform contains four levels.The bottom is Microsoft global basis serv
43、ice system, the cloud infrastructure services layer takes Windows Azure operating system as core, Windows Azure above is a application service platform, for the user to provide a series of services, the top is Microsoft for the user to provide services.As most Windows users now is, which allows the
44、user to sustain their usage, faster application will run on migration to the Azure platform.2.2.4 IBM Blue Cloud platformIBMs Blue computing platforms will expand the technology used on the Internet to enterprise platform, so the data center using similar on the Internet computing environment.It con
45、sists of a data center, IBM Tivoli monitoring software, DB2 database, IBM Tivoli deploy management software, and IBM Web Sphere application server virtualization software and open source and some open source information processing software.Blue software platform characteristics are mainly embodied i
46、n the virtual machine and mass data processing software for Apache Hadoop use on.Through the way of the virtual machine , cloud computing platform has some advantages as the follows.First,process transfer method more flexible.Second,reduce the cluster electric power, achieve the purpose of saving en
47、ergy.Third,to get the load balance has nothing to do with application performance.Fourth,the deployment of more flexible.Now,with the development of Cloud computing technology,more and more applications will be put forward and put into use.Our life will open cloud era.3. Development of cloud computi
48、ng 3.1 Technology prospects In the users standpoint, cloud computing system will put all kinds of data including user data to a remote cloud storage platform through the network, reducing the burden of management for data users; At the same time, cloud computing systems will also deal with data service program through the remote large-scale computing clouds processing platform, and can afford large amounts of data processing work. It can be said that cloud com