towards an e-science roadmap tony hey director uk e-science core programme [email protected]
TRANSCRIPT
Core Programme Structures
• Technical Advisory Group- Set up DataBase Taskforce
Chaired by Norman Paton- Set up Architecture Taskforce
Chaired by Malcolm Atkinson Provide advice on Grid Data and
Grid Architecture issues E-Science Steering Committee
oversees whole e-Science Programme
Why do we need a new Grid Architecture?
• The Globus Toolkit has emerged as an international ‘de facto’ standard- Used by over 60 Grid projects
worldwide- Offers good pragmatic solutions
for many Grid requirements• But still much missing functionality
- Database interfaces, accounting,
workflow management, ….
Web Services• Major effort by IT companies to
define an open standard for Internet-scale distributed computing- Supported by all significant IT companies IBM, Microsoft, HP, Sun, ..
• Example of ‘Service-Oriented Architecture’ in which everything viewed either as a provider or consumer of ‘services’- ‘Publish – Find – Bind’ triangle
Service-Oriented Architecture
Bind
Find Publish
ServiceRequestor
Service Provider
Service Registry
Grid Services• At Global Grid Forum in Toronto in
February, the Globus team and IBM presented a proposal for an
Open Grid Services Architectureor ‘OGSA’
• Move towards Grid service approach based on Web Services widely welcomed at GGF4 and by the UK TAG and by the eSSC
Approach endorsed by two independent studies (by Gannon and by Kunszt) commisioned by Core Programme
IT Industry Responses
‘All of our systems will be enabled to work with the grid, and all of our middleware will integrate with the software’
Irving Wladawsky-Berger, IBM
‘Grid Computing is one of the three next big things for Sun and our customers’
Ed Zander, COO Sun
Open Grid Services Architecture
• Development of web services• OGSA will provide
– Naming /Authorization / Security / Privacy– Higher level services: Workflow,
Transactions, DataBases,Knowledge Discovery,…
Exploit Synergy: Commercial Internet with Grid Services
Implications for e-Science Pilot Projects?
Projects using Globus 2.0 Toolkit will need migration strategy to the OGSA Grid Service version of Globus
File-based and Compute-centric projects using Globus 2.0
e.g. GridPP, EU DataGrid Migration through different Globus releases will be assisted by Grid Support Centre
What is a Grid Project? Essence of a Grid project is the secure
coordinated sharing of heterogeneous distributed resources
More data-centric projects may elect to use Service approach via WSDL and Web Services Core Programme will support Web
Services version of GSI digital certificates
module How do projects protect their software investment and migrate to an as yet not fully defined OGSA?
Web Services+ GSI webGlobus 2.0
Starting out
Some projects will use Globus 2.0
Some projects will use Web Services
Projects need intercept strategy!
OGSA outcome ?