1、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 Internet. For the category of cloud computing ,this paper concludes the concept of cloud computing , emerging background, the prese
2、nt main applications, the future development of the prospect and the presents problems.Keywords: cloud computing; data processing; distributed computing; Internet1. Producing of Cloud Computing 1.1 what is cloud computingThe producing of Cloud computing has a big background inevitability.First,the d
3、evelopment of Communication and Internet is faster than the development of Computer .That situation offers a soil for growing of Cloud computer.Second, Software engineering changed the way of faceing the service such as facing machine,language and middleware into the way of facing service and need.T
4、hat 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 engineers”.It is what the Cloud computer brought the important changing on the way of using IT facility for users.Cloudcomputingisar
5、esourcedeliveryandusagemodel,itmeansgetresource(Hardware,software)vianetwork.ThenetworkofprovidingresourceiscalledCloud.ThehardwareresourceintheCloudseemsscalableinfinitelyandcanbeusedwhenever. 1.2 The principle of cloud computing1.2.1 three method of calculation:Parallel processingParallel processi
6、ng 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 processing,it can be said of a program executed on n processors speed may be performed on a single processor speed n times.Dist
7、ributed processingDistributed processing system will be in different locations or multiple computers with different functions or different data communications network linking under the control of the control system of unified management and coordination to complete the computer system for informatio
8、n processing tasks.Grid computingGrid computing is accompanied by the Internet and the rapid development of the new computing model, specifically for complex scientific calculations. This computing model is the use of the Internet dispersed geographically computer organization into a virtual superco
9、mputer, 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 calculation is called grid computing.What cloud computing is? Cloud computing is an emerging business computing model.Specifically, Cloud
10、 Computing is a kind of distributed processing,parallel processing and grid computing development, or commercial implementation of these computer science concepts The transmission capacity of the high-speed Internet, data processing process from a personal computer or server to a cluster of computer
11、s 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 supply. It means that computing power as a commodity circulation, like gas, water and electricity, like, access to convenient, low-
12、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 need local processing, just use the browser.After understanding of what cloud computing, let us understand some of the other cloud
13、 computing.Cloud Computing ArchitectureMost of the cloud computing infrastructure is transmitted through the data center a reliable service and the different levels of virtualization technology on the server. People can use these services in any network infrastructure.Cloud serverCloud server is a s
14、et 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 server virtualization technology, cloud server is a VPS is a virtual software, the VZ or VM on a single server virtual quasi-i
15、ndependent 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)Programming model. For large-scale data sets (greater than 1TB) parallel computing. Strict programming model that makes cloud comput
16、ing 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 a large number of users, cloud computing system uses the stored data of distributed storage, redundant storage to ensure data rel
17、iability.3)Huge amounts of data management technology. Cloud computing on the distribution of vast amounts of data processing, analysis, data management technology necessary to efficiently manage large amounts of data.Virtualization technology. Virtualization technology enables software applications
18、 and the underlying hardware isolation, which includes a single resource is divided into multiple virtual resources splitting mode, including the integration of multiple resources into a virtual resource aggregation mode. Abstract the server physical resources into logical resource, allows a single
19、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 management of the resource pool, to improve resource utilization, simplify systems management, server consolidation, IT business
20、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 will also continuously improve and develop with the needs of the application.So is the Cloud Computing.Cloud computing are able to be
21、 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 in studying stage.Thus,I only plan to introduce some applications which have used as following.2.1.1 Scientific researchThere are
22、 three major applications in scientific research,namely earthquake monitoring,marine information monitoring and astronomy calculation information processing.These applications need to combine with sensor technology.Such as temperature transmitter,depth sensor.The sensors are used to collect signal a
23、nd 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 the information is of large amount,it need high speed powerful computer to process,now the Cloud is used on.This is the major using
24、 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.Cloud mass data storage capacity can meet the need.For example,Rising Cloud Security plan,its working principle is as follows.The c
25、lient 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 servers 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 c
26、loud 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 unique DNA information need to store and analysis.We must have enough room to store the information and access to it at any time.The Cl
27、oud 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 application.2.1.4 InternetNow the most important applications of network is retrieval service.But the mass of information stored i
28、n 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 efficient computing power is used to do it.For example,Google Cloud computing platform is put forward just to implement efficient r
29、etrieval 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 only on ideas stage now and it has not come into use.The idea is big cable companys can establish a Cloud computing platform toget
30、her 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 afford to the high configured equipments.So the big cable companys can spare some idle resources to the litter ones which needed.I
31、n 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 large 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 servi
32、ce platformsActually, the Cloud Computing research by academic is much earlier than the proposal of its concept.We ,the Chinese researchers,have had the transparent Computing 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.And more influential platforms have Google Cloud c
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