Social Cloud Computing : Resource sharing in virtualized social motivated network

1. Social Cloud Computing :Social Cloud Computing :
Resource sharing inResource sharing in
virtualized social motivatedvirtualized social motivated
networknetwork

2. ContentContent
 Introduction
 Key Terms
– Social cloud
– Social Networking
– Cloud Computing
 Social Cloud Architecture
 Facebook Applications
 Pros and cons
 Future Application
 Conclusion
 References

3. Introduction
 Social networking has become a primary means of communication
between friends, family, and coworkers.
 For Ex. Facebook has over 500 million active users in which 50%
log on every day.
 The structure of a Social Network is a dynamic virtual organization
with inherent trust relationships between friends for resource sharing
in a Social Cloud.
 A large number of commercial Cloud providers are available like
Google App Engine, Amazon Web Services, Citrix, Eucalyptus,
Rackspace, SAP and VMware.
 A cloud-based usage model is used to enable virtualized resource
sharing through service-based interfaces

4. Social Cloud
 Social cloud is a pool of virtualized computer resources.
 Resource provisioning, change request, reimaging, workload,
rebalancing, monitoring.
 Used in different workloads, interactive and user interfacing
applications.
 Virtual machine – support redundant, self-recovery, high scalable
programming models to recover H/W and S/W failures

5. Social Networking
 Social Networking is a popular way to connect socially or
professionally similar people
 Most of the Social network on the Web are public and accessing
privileges can be changed
 Social networking provides a two people on planet could meet
through a single environment.

6. Cloud Computing
 Internet based technology
 Dynamism, Abstraction & Resource sharing
 Platform- Collection or group of integrated and Networked
hardware, software and internet infrastructure
 H/w, S/w, N/w services to Clients.
 Hides complexity infrastructure from user and provide application
by very simple GUI and API.
 Demand services that are always ON, Anywhere, anytime and any
place.
 Used in Google Apps, Mozilla, Amazon Web services(AWS).

7. Social Cloud Computing
 Unique nature of the Social Cloud is regulating sharing.
 A dynamic “Social Network” is formed from the pre-established trust
through friend relationships within a Social network.
 Combining trust relationships with suitable incentive mechanisms
(through financial payments) may provide much more sustainable
resource sharing.
 Creating a Social Storage Cloud, looking possible market mechanisms
to create a dynamic Cloud infrastructure in a Social network
environment like Facebook is also applicable.

8. Social Cloud Architecture(1)
 Individual as Social networking is based on the degree of knowledge
 A “friend” - family, a work colleague, a college affiliate, a member
of the same sports club, etc.
 Facebook has recently recognized the need for the creation of such
groups and allows users to differentiate between, for example, close
friends and colleagues.
 For example, a user could limit sharing with close friends only,
friends in the same country, network or group, all friends, or even
friends of friends.

9. Social Cloud Architecture(2)

10. Facebook Application
 Facebook exposes access to their social graph through the API,
interface applications can access friends, events, groups, profile
information and photos.
 Multi-Party Online Communication
 Status Update
 Photo Sharing & Voice chat
 File- sharing
 Blogging
 Forums
 Group Discussion
 Applications

11. Facebook application hosting
environment
The Social Cloud web application generates page content which is
parsed by Facebook to create the page delivered to the user.
The application creates a page based on the request and returns
it to Facebook.

12. Contd: Facebook application hosting
environment
 At this point the page is parsed and Facebook specific content
is added according to the FBML page instructions.
 The final page is then returned to the user.
 Design consideration for a Social Cloud as access to the cloud
services would be expensive if routed through the Facebook
server and the callback application server to get data from the
actual cloud service.
 To reduce this effect, FBJS can be used to request data
asynchronously from the specified service in a transparent
manner without routing through the application server.

13. Storage as a Service
 The interface needs to provide a mechanism to create a instance for
a reservation.
 Social storage cloud advertises capacity that is periodically
refreshed and stored in a Monitoring and Discovery System (MDS).
 The social storage cloud is based on a generic Web Services
Resource Framework (WSRF) storage service
 The resource keeps track of service levels as outlined in the
agreement such as the data storage limit.
 The service has interfaces to list storage contents, retrieve the
amount of storage used/available, upload, download, preview, and
delete files.

14. Registration
 Joining the cloud users first need to register themselves, and then specify
the cloud services they are willing to trade.
 As users are pre authenticated through Facebook, user instances can be
transparently created in the banking service using the user’s Facebook ID.

15. Social Marketplace
 The social storage cloud implementation includes two concurrent
economic markets, posted price and reverses auctions.
Posted Price
 A user can select any advertised service and define specific
requirements (storage amount, duration, availability, and
penalties) of the provision.
 When the user selects a service they also specify their required
service levels, an SLA is created using the SLA creation component.
 The result of this query is used to populate the posted price offer list
that describes availability and pricing information.

16. Posted Price marketplace in a Social Cloud

17. Auction
 Specify their storage requirements, submit an auction request to the
social storage cloud.
 The user’s friends then bid to provide the requested storage. It also
means that “antisocial” behavior such as counter speculation is
fruitless.
 Cloud services compete (bid) for the right to host the user’s task.
 The auctioneer uses the list of Facebook friends to locate a group of
suitable storage services based on user specified requirements; these
are termed the bidders in the auction.

18. Auction marketplace in a Social Cloud

19. Auction Contd.
 Each bidder then computes a bid based on the requirements
expressed by the consumer.
 The auctioneer determines the auction winner and creates an SLA
between the auction initiator and the winning bidder.
 As in the posted price mechanism, the agreement is sent to the
specified service for Instantiation and the bank for credit transfer.
 In DRIVE, an Auction Manager (AM) is responsible for creating the
auction, soliciting bids, and determining a winner.

20. Evaluation
 Outlines measurements obtained from the deployed social storage
cloud.
 The experiments focus on the scalability and performance of the
two social marketplaces and the feasibility of the proposed co-op
infrastructure.
 It is assumed an average Facebook user has 130 friends. The
market-based experiments are run on a single server running
Windows Vista with a 2.2 GHz Dual Core processor and 2 GB
memory.
 This can used to evaluate Posted Price Allocation, Auction
Allocation, Service Overhead, CPU Usage and Memory Usage.

21. Pros and Cons(1)
 Data security standards are likely to be higher in your provider’s
environment than in your business, especially if the cloud provider
is accredited with ISO and other key industry standards.
 Your cloud provider is likely to be better resourced physically and
financially, to cope with data security threats to its infrastructure
than you.
 Your data will still be available, even if you lose a laptop.

22. Pros and Cons(2)
 Your data will be stored outside the business network, and possibly
even abroad, which may contravene local data protection laws and
regulations.
 If your internet connection is unstable there may be problems
accessing your services.
 Sites like Facebook and Twitter are highly prone to attack.
 Automatic data back-up and high levels of security are not
guaranteed – due care must be undertaken.

23. Conclusion
 A Social Cloud is unique in that it builds upon the social incentives
and external real-world relationships inherent in social networks to
provide heterogeneous resource trading.
 In our system Facebook users can discover and trade storage
services contributed by their friends, taking advantage of pre-
existing trust relationships.
 If under load, our system can perform multiple concurrent auctions
that would satisfy the requirements for a moderately sized social
network.
 Our future work aims to generalize our approach so that we can
capture additional marketplaces.

24.  Construct a social computation cloud that permits trading of virtual
machine images, build a Social Cloud for public scientific
computing (volunteer)
 Scientific collaboration without Incentives
 Social accounting that will be incurred as groups grow in size and
role.
 Business models and social storage cloud to provide a platform for
further experimentation.
 Explore system performance and user interactions on a much larger
scale.
 Used to examine storage and replication algorithms and reduce
security flaws.
Future Work

25. References
[1] I. Foster, C. Kesselman, and S. Tuecke, “The Anatomy of the Grid:
Enabling Scalable Virtual Organizations,” Int’l J. High Performance
Computing Applications, vol. 15, pp. 200-222, Aug. 2001.
[2] L. Cutillo, R. Molva, and T. Strufe, “Safebook: A Privacy-
Preserving Online Social Network Leveraging on Real-Life Trust,”
IEEE Comm. Magazine, vol. 47, no. 12, pp. 94-101, Dec. 2009.
[3] O. Nov, M. Naaman, and C. Ye, “Analysis of Participation in an
Online Photo-Sharing Community: A Multidimensional
Perspective,” J. Am. Soc. for Information Science and Technology,
vol. 61, no. 3, pp. 555-566, 2010.

26. Thank you…Thank you…