浅谈云计算英文版.docx

1、浅谈云计算英文版 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 present main applications, the future development of the prospect a

2、nd 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 development of Communication and Internet is faster than the de

3、velopment 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.That made SAAS（SoftwareasaService）to come true.Third, the users

4、 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.Cloudcomputingisaresourcedeliveryandusagemodel,itmeansgetresource(Hardware,softw

5、are)vianetwork.ThenetworkofprovidingresourceiscalledCloud.ThehardwareresourceintheCloudseemsscalableinfinitelyandcanbeusedwhenever. 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 pr

6、ocessors. 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.Distributed processingDistributed processing system will be in dif

7、ferent 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 information processing tasks.Grid computingGrid computing is accompanied

8、 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 supercomputer, each of which involved in the calculation computer is

9、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 Computing is a kind of distributed processing,parallel proces

10、sing 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 computers on the Internet., This is a revolutionary move, the analogy,

11、 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-cost. For example it! Our computing model is most locally inst

12、alled 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 computing.Cloud Computing ArchitectureMost of the cloud compu

13、ting 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 set of clustered servers on virtual quasi-independent part of t

14、he 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-independent part of the server, each part can be done to separa

15、te 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 computing programming environment is very simple.2) Huge amounts of

16、 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 reliability.3) Huge amounts of data management technology. Clou

17、d 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 and the underlying hardware isolation, which includes a si

18、ngle 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 server into several virtual servers or even hundreds of iso

19、lated, 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 change more resilient.2.1 The application area of Cloud Com

20、putingAs 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 applied because of its mass of data processing power and e

21、fficient 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 three major applications in scientific research,namely ear

22、thquake 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 and convert to voltage signal,then send them to Cloud comput

23、ing 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 of Cloud.2.1.2 Network SecurityNetwork security is now a v

24、ery 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 client can be automatically to connect to the server and sca

25、nning 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 cloud mass data storage capacity.2.1.3 MedicineDNA informati

26、on 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 Cloud is used to achieve it.And its also applied to cases sto

27、rage 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 in the servers.In order to get what the user wanted,the Inte

28、rnet 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 retrieval function at first.And E-mail server and online rea

29、l-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 together to meet their need to make high definition and high qua

30、lity 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.In this way,not only can they meet their own need,but also c

31、an 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 service platformsActually, the Cloud Computing research by acade

32、mic 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 computing platform, IBM Blue Cloud platform,Amazon Elastic Compute Cloud(EC2) platform