[Slides]

1
OptimisationofComponentBased
ApplicationswithinaGrid
Environment
JohnDarlington,StevenNewhouse,
NathalieFurmento,AnthonyMayer,
StephenMcGough
Londone-ScienceCentre
ImperialCollege,London
[email protected]
Outline
• E-ScienceandTheGrid
• ICENIextensibleframework
• UsingMeta-dataforRun-Time
Optimisation
• Example:LinearSystems
• Furtherdevelopments

2
E-Science
• NetworkedResources:TheGrid
• UtilisationoftheGrid
• EnablingDomainSpecialists
E-Science&TheGrid:
Challenges
• ComplexApplications
–ComputationallyIntensive
–VeryLargeDataSets
•ComplexResources
–Dynamic
–Unreliable
•Accessibility
–Portals
Application
Resources
Transparent
Mapping

3
• User:
–Who,what,when,where
•Resources:
–Availability,character,policy
•Application:
–Composition,behaviour,performance
Information!
SoftwareAbstraction:
Components
• Implementation+Interface
• Abstraction:Expressability
• Encapsulation:NativeCode
–ConnectionOrientedProgramming
–Mobility
–HighPerformance
–MultipleImplementations

4
UserRoles
• End-User
• Customisation:types→instances
• Composition:instances→applications
• Scientist
• Developcomponenttypes
• Annotatewithmeta-information
• Developer
• Developcomponentimplementations
• Annotatewithmeta-information
ICENI
•IC E-ScienceNetworkedInfrastructure
• DevelopedbyGridMiddlewareGroup
• CollectandproviderelevantGridmeta-data
• Usetodefineanddevelophigher-levelservices
TheIceni,underQueenBoudicca,
unitedthetribesofSouth-East
Englandinarevoltagainstthe
occupyingRomanforcesinAD60

5
ICENIOverview
DomainManager
CR
SR
Identity
Manager
PolicyManager
CR
SR
ResourceManager
Computational
Resource
Software
Resource
Private
Administrative
Domain
SR
CR
PublicComputational Community
SR
CR
PublicComputationalCommunity
SR
Gatewaybetweenprivate
andpublicregions
Private Public
Resource
Broker
ResourceBrowser
Network
Resource
Storage
Resource
Application
DesignTools
Component
DesignTools
Application
Mapper
ICENIComponents
Gatewayto
Grid
Environment
Component
Design
Tools
Scientist Developer
Implementation
Annotating
Tools
Repository
Application
Design
Tools
End
User
ApplicationDescription
Document
Code Code
Code
Application
Mapper
Code
Code
Run-Time
Representation Resource
Broker