TESTING GRID SOFTWARE: THE DEVELOPMENT OF A DISTRIBUTED SCREEN RECORDER TO ENABLE FRONT END AND...

TESTING GRID SOFTWARE: TESTING GRID SOFTWARE:

THE DEVELOPMENT OF A DISTRIBUTED SCREEN THE DEVELOPMENT OF A DISTRIBUTED SCREEN RECORDER TO ENABLE FRONT END AND RECORDER TO ENABLE FRONT END AND

USABILITY TESTINGUSABILITY TESTING

Florian Urmetzer, Gareth J Lewis and Florian Urmetzer, Gareth J Lewis and Vassil N AlexandrovVassil N Alexandrov

Advanced Computing & Emergent Advanced Computing & Emergent Technologies CentreTechnologies Centre

University of Reading University of Reading

Florian Urmetzer, Gareth J Lewis and Florian Urmetzer, Gareth J Lewis and Vassil N AlexandrovVassil N Alexandrov

Advanced Computing & Emergent Advanced Computing & Emergent Technologies CentreTechnologies Centre

University of Reading University of Reading

Copyright, 2005 © ACET http://www.acet.reading.ac.uk

Roadmap:Roadmap:

- IntroductionIntroduction

- Background and problemBackground and problem

- SolutionSolution

- Implementation Implementation

- DiscussionDiscussion

Copyrigh, 2005 © ACET http://www.acet.reading.ac.uk

Example: Example: The Collaborative P-Grade The Collaborative P-Grade

Grid PortalGrid Portal


DefinitionDefinition

• Software TestingSoftware Testing– The purpose of software testing is the The purpose of software testing is the

determination of error absence in software. An determination of error absence in software. An ideal test would therefore only succeed when ideal test would therefore only succeed when software is free of errors.software is free of errors.

• Usability TestingUsability Testing– Usability testing is a means for measuring how Usability testing is a means for measuring how

well people can use something…well people can use something…


Problem DescriptionProblem DescriptionDistributed Collaborative Software Distributed Collaborative Software

DevelopmentDevelopment


TESTINGTESTING USABILITYUSABILITYLimitation of Limitation of automatic testing automatic testing methodsmethods

Distribution – Distribution – Multiple locations Multiple locations of clientsof clients

Test bed Test bed implementations implementations often not realisticoften not realistic

Collaboration – Collaboration – Multiple users Multiple users working on one working on one tasktask

Reconstruction of Reconstruction of errorserrors

SolutionSolution


n… User Computer Recording Computer

Optional:1. Screen2. State info3. Camera/Audio

Solution – Usability testingSolution – Usability testing



1. Screen2. Camera/Audio

User

Solution – DebuggingSolution – Debugging



1. Screen2. State info

FrameworkFramework

Network

Recording ComputerUsability testing

Debugging

Computer ...n Computer 2Computer 3 Computer 1

Tester - Developer

Test Computers Running- Application- ScRaDD


NetworkingNetworking

Network

Recording Computer



• Video compressionVideo compression

• RTP (Real Time Protocol)RTP (Real Time Protocol)

• Master Slave approachMaster Slave approach

Networking - ProblemsNetworking - Problems

Network

Recording Computer



• Flooding of networkFlooding of network

• PC vs Server as masterPC vs Server as master

• File sizesFile sizes

RecordingRecording

• Custom written recorderCustom written recorder

• Size of project (number of Size of project (number of participants) determines participants) determines hardwarehardware

• Further tests neededFurther tests needed


NetworkingNetworking


Network 3

Network 4

Network 1

Network 2

Recording Computer

collaboration collaboration

collaboration

colla

bora

tion

Usability testingDebugging

… … in the near Futurein the near Future

• Production and test with projectsProduction and test with projects

• Test architecture independenceTest architecture independence

• Firewall testingFirewall testing

• Upscale test usersUpscale test users


Conclusion:Conclusion:

• Prove of conceptProve of concept

• Further implementationFurther implementation


Thank you !Thank you !

• Questions ? ?Questions ? ?


TESTING GRID SOFTWARE: THE DEVELOPMENT OF A DISTRIBUTED SCREEN RECORDER TO ENABLE FRONT END AND...

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