Leveraging the Grid to Provide a Global Platform for Ubiquitous Computing Research

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Leveraging the Grid to Provide a Global Platform
for Ubiquitous Computing Research
(Oliver Storz, Prasad Venkata Boddupalli, Nigel
Davies, Adrian Friday, and Maomao Wu)

• 2004. 02. 25
• Kim, Chang Soon
• Super Computing Laboratory
• Dept. of Computer Science, Yonsei Univ.

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CONTENTS

• Introduction
• The Grid Vision
• Using Grid Technologies
• Discussion
• Creating the Ubi-Grid
• Conclusion

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Introduction

• Slow progress of Ubiquitous Computing
• Because of lack of infrastructure
• Specialized middleware platforms
• GAIA
• Aura
• Cooltown

But, these are proprietary in nature and future
may be uncertain
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Introduction (cont)

• But, The Grid
• Promises access to resources
• Standardized, inexpensive, ubiquitous and
  reliable
• The major point
• A broad adoption of the Grid
• Offers benefits to both the Grid Ubi.
  applications

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The Grid Vision

• The Overall Aim of Grid
• Processing power and data storage ubiquitous
• Analogous to the electricity the distribution
  grid
• The integration of different kinds of nodes
• By a standardized and uniform way

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Comparative view of Grid and Ubiquitous

• Grid (Ian Foster)
• Coordinates resources that are not subject to
  centralized control
• Using standard, open, general-purpose protocols
  and interfaces
• To deliver nontrivial qualities of service
• Ubiquitous (Mark Weiser)
• Most of devices will not be under centralized
  control
• Services and devices (resources) will be interact
  in a more or less coordinated fashion
• Standardized ways

They have many similarities
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Key challenges affecting infrastructures in both
domains

• Heterogeneity and Interoperability
• Large number of resources that are heterogeneous
• Scalability
• Innumerable resources (devices, sensors,
  service)
• Adaptability and Fault tolerance
• To cope with change, failure and the introduction
  of new components
• Resource Management and Service Composition
• To automate and control
• the life-cycle, interaction, monitoring and
  dynamic composition of simple services

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Key challenges affecting infrastructures in both
domains

• Service discovery
• Security
• Authentication and Authorization
• Must move towards the concepts of
• Recognition and Trust
• Data integrity, confidentiality, and privacy
• Communication
• Grid assume
• Plentyful bandwidth and reliable communications
• But these are not a feature found in wireless
  networks
• Synchronous and asynchronous (event based)
• Audit Trails
• Payment

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Future embodiments of the Grid

• Potential to form the Ubiquitous computing
  platforms
• But, so far
• there has been very little or no penetration of
  expertise
• So, need momentum within the Grid community

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Using Grid Technologies

• Degree of progress and Necessity of Grid
  Middleware
• Variety of Grid middleware
• Globus v2, Legion, and Avaki
• OGSA is a most attractive one
• Already provides some basic functionality
• Introspection, registration, eventing, lifecycle
  management, service creating and naming
• OGSI
• Standard interfaces for these services and their
  behavior

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Scenario 1 Context-aware Room
InfraRed Intruder System
4.Deduce the resource Picks a set of action
5.Bring the local news
John
1.Authentication(Recognition)
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Scenario 2 Fusion b/w Ubi. and Grid

• John
• Chronic lung disease
• A small wearable computer
• Record vital signs, blood pressure, his pulse
  so on
• Wireless comm. transmitting the recorded data
  periodically
• Environmental sensors
• Clinicians
• Access storing data
• Expert system
• In case of an emergency
• Emergency response to Johns location
• Notification to wearable computer

Grid Services!!
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Discussion

• Grid is not yet perfect platform
• OGSA move towards a more service-oriented
  environment
• Key challenge
• Solutions are appropriate for both the Grid and
  Ubi.
• Relationship of mutual complement
• Testbed
• Applications could be tested using real world
  components (Grid) rather than lab-based tests
• Separate testbeds can be linked together using
  the Grid
• Common platform

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Creating the Ubi-Grid

• The biggest drawback
• Dynamic service discovery
• Web-based service directory
• To advertise existing Ubi-applications
• Portal
• At present
• Simply a database of service URIs
• Ubi-Grid portal
• To discovery these URIs and applications
  configured to use these services

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Conclusion

• Significant progress has been made for Ubi-Comp.
• Still no standardized, uniform platform
• ? Grid provide viable platform
• Because Grid and Ubi. share many common
  requirements