iSGTW - International Science Grid This Week
iSGTW - International Science Grid This Week
Null

Home > iSGTW - 22 October 2008 > iSGTW Link of the week - Cloud and grid are complementary technologies

Link of the week - Cloud and grid: complementary technologies


Image courtesy of dsa-research.org

Ignacio Martín Llorente of the DSA (Distributed Systems Architecture) Research Group at the Universidad Complutense de Madrid discusses the relationship between cloud and grid computing in the group's blog.  A couple of excerpts follow.

Grid is as an interoperability technology, enabling the integration and management of services and resources in a distributed, heterogeneous environment. The technology provides support for the deployment of different kinds of infrastructures joining resources which belong to different administrative domains. In the special case of a compute grid infrastructure, such as EGEE or TeraGrid, grid technology is used to federate computing resources spanning multiple sites for job execution and data processing.

On the other hand, I do not think there is a single definition for cloud computing. From my view, the only new feature offered by cloud systems is the provision of virtualized resources as a service, where virtualization is the enabling technology. (What is virtualization?) In other words, the relevant contribution of cloud computing is the Infrastructure as a Service (IaaS) model. I should remark that virtualization has been used by the grid community before the arrival of the cloud.

A new virtualization layer between the service and the infrastructure layers decouples a server not only from the underlying physical resource but also from its physical location, without requiring any modification within service layers from either the service administrator or the end-user. Such decoupling is the key to supporting the scale-out of an infrastructure to supplement local resources with cloud resources to satisfy peak or fluctuating demands. 

The virtualization of a grid site provides several benefits, which overcome many of the technical barriers for grid adoption:

  • Easy support for VO-specific worker nodes
  • Reduce gridification cycles
  • Dynamic balance of resources between VO’s
  • Fault tolerance of key infrastructure components
  • Easier deployment and testing of new middleware distributions
  • Distribution of pre-configured components
  • Cheaper development nodes
  • Simplified training machines deployment
  • Performance partitioning between local and grid services
  • On-demand access to cloud providers

If you are interested in more details about how virtualization and cloud computing can support compute Grid infrastructures you can have a look at my presentation “An Introduction to Virtualization and Cloud Technologies to Support Grid Computing” (EGEE08). I also recommend the report “An EGEE Comparative study: Clouds and grids - evolution or revolution?”.

Read more.

See related articles Virtual Infrastructure (in iSGTW),  What clouds and grids can learn from each other and The new Nimbus: first steps in the clouds.

Tags:



Null
 iSGTW 22 December 2010

Feature – Army of Women allies with CaBIG for online longitudinal studies

Special Announcement - iSGTW on Holiday

Video of the Week - Learn about LiDAR

 Announcements

NeHC launches social media

PRACE announces third Tier-0 machine

iRODS 2011 User Group Meeting

Jobs in distributed computing

 Subscribe

Enter your email address to subscribe to iSGTW.

Unsubscribe

 iSGTW Blog Watch

Keep up with the grid’s blogosphere

 Mark your calendar

December 2010

13-18, AGU Fall Meeting

14-16, UCC 2010

17, ICETI 2011 and ICSIT 2011

24, Abstract Submission deadline, EGI User Forum

 

January 2011

11, HPCS 2011 Submission Deadline

11, SPCloud 2011

22, ALENEX11

30 Jan – 3 Feb, ESCC/Internet2

 

February 2011

1 - 4, GlobusWorld '11

2, Lift 11

15 - 16, Cloudscape III


More calendar items . . .

 

FooterINFSOMEuropean CommissionDepartment of EnergyNationalĀ ScienceĀ Foundation RSSHeadlines | Site Map