1、Grid Computing & Cloud Computing-by HuJing-2021.4.10ProgressCloud Computing3Definition for Cloud computinglA large-scale distributed computing paradigm that is driven by economies of scale, in which a pool of abstracted, virtualized, dynamically-scalable, managed computing power, storage, platfo

2、rms, and services are delivered on demand to external customers over the Internet. (Ian Foster)l特點(diǎn)：l超大規(guī)模l虛擬化l高可擴(kuò)展性l高可靠性l按需服務(wù)l極其廉價(jià)l通用性RelationGrid Computing & Cloud ComputingGrid Computing & Cloud ComputinglClouds and Grids share a lot commonality in their vision, architecture and technology,

3、 but they also differ in various aspects such as security, programming model, business model, compute model, data model, applications, and abstractions.lThe vision is the samelreduce the cost of computing; lincrease reliability; lincrease flexibility.lthe problems are mostly the samelmanage large fa

4、cilities;ldefine methods by which consumers discover, request and use resources provided by the central facilities; limplement the often highly parallel computations that execute on those resources. Business Model lTraditional business model lsoftware has been a one-time payment for unlimited use (u

5、sually on 1 computer) of the software.lCloud-based business modella customer will pay the provider on a consumption basis, such as electricity, gas, and water, relies on economies of scale in order to drive prices down for users and profits up for providers.lThe business model for Gridslproject-orie

6、nted in which the users or community represented by that proposal have certain number of service units (i.e. CPU hours) they can spend.Architecture PaaSSaaSIaaS如：Saleforce online CRM 效力如：Google App Engine如：Amazon EC2/S3/SQS 效力Resource ManagementlCompute ModellGrids：lbatch-scheduled compute model, do

7、nt natively support interactive applications lClouds: lresources being shared by all users at the same time, allow latency sensitive applications to operate natively Resource ManagementlData ModellInternet Computing will be centralized around Data, Clouding Computing, as well as Client Computing. Re

8、source ManagementlCombining compute and data managementlGridlData-aware schedulers and dispersing data close to processors lCloudldata-intensive applications are not typical applications today,las the scales of Clouds grow, it may just be a matter of time for many Clouds Resource ManagementlVisualiz

9、ationlGridldo not rely on virtualization as much as Clouds do, each individual organization maintain full control of their resources lCloudlan indispensable ingredient for almost every CloudProgramming ModellGridlMPI, Globus Tookit, WSRF, CoG etclCloudlMapReduce, Sawzall, Hadoop etcApplication Model

10、lGridlsupport many different kinds of applicationslHPC (high performance computing )lHTC (high throughput computing )lscientific gateways lCloudlin principle cater to a similar set of applications, except HPCladopt gateways to Cloud resources for end-user interaction lThe browser and Web 2.0 technol

11、ogies will play a central role on how users will interact with Grids and Clouds in the future. Security ModellGrid：stricterlsingle sign-on, delegation, privacy etclCloud: simpler, less securelcreate and manage account information for end-users, and allows users to reset their passwords and receive n

12、ew passwords via Emails in an unsafe and unencrypted communication. lnew users could use Clouds relatively easily and almost instantly, with a credit card and/or address 劉鵬：做網(wǎng)格的該如何看待云計(jì)算 l網(wǎng)格已經(jīng)走過了十年歷程，大家對(duì)它已經(jīng)有審美疲勞，新的叫法讓人耳目一新，因而迅速被人接受了。l我們不要為名稱問題所困擾，叫網(wǎng)格計(jì)算也好，叫云計(jì)算也好，能夠解決問題就好！ l君不見自從云計(jì)算概念提出之后，這種模式的分布式計(jì)算的確得

13、到了空前的發(fā)展！ 未來10年l科學(xué)l商業(yè)網(wǎng)格計(jì)算網(wǎng)格計(jì)算Science 2.0Business 2.0云計(jì)算云計(jì)算Cloud + Grid ComputingService CatalogComputing centerInfrastructureVirtual Client serviceWeb Application ServiceCompute ServiceDatabase serviceStorage serviceContent ClassificationStorage backup, archive serviceJob SchedulingServiceCollaboration ServicesDatacenterInfrastructure云計(jì)算與網(wǎng)格計(jì)算將走向融合Referencel1 Ian Foster, Yong Zhao, Ioan Raicu, Shiyong Lu. Cloud Com