Component-Based Dynamic QoS Adaptation

1
Component-Based Dynamic QoS Adaptation

• Praveen Sharma, George Heinman, Joseph Loyall,
  Prakash Manghwani, Matthew Gillen, Jianming Ye,
  Krishnakumar Balasubramanian
• TAO Workshop
• July 16, 2004

2
Overview

• UAV-OEP/Capstone Demo PCES Objective
  Operational Capabilities and Technical Story
• Demo Architecture and End-to-End QoS Management
• Constituent Technologies in the Demo
• CIAO Components
• Qosket Components
• Empirical Evaluation based on CCMPerf
• Modeling and Synthesis
• Summary
• Publications

3
UAV-OEP/Capstone Demo PCES Objective
Operational Capabilities Time critical target
engagement, Combined USAF and Army
operations Technical Story Dynamic end-to-end
mission-driven QoS management,Software
engineering of DRE systems
4
Demonstration Architecture
SimUCAV
SimUAV
SimC2
Army FEC
5
Dynamic End-to-End QoS Management
6
Constituent Technologies (1/2)

• Component-based middleware
• CIAO components
• Functional components
• SimUAV sender, SimUAV receiver
• Qosket components
• CPU reservation (CPU broker Qosket)
• Network priority (Diffserv Qosket)
• Application/Data management
• Image compression
• Rate shaping and pacing
• Scaling
• Cropping

7
Constituent Technologies (2/2)

• Multi-layer QoS management
• System resource manager
• Local resource manager
• Modeling and synthesis using DQME, CADML

8
Qosket Components

• Presented at CBSE 7
• We prototyped this one in the QuO software
• Works with existing assembly tools
• Allows QoS to be distributed where needed
• The assembly of Qoskets can run in a single
  component server unless necessitated by
  application to run otherwise
• Are general QoS provisioning components, i.e.,
  can be reused with any other application with
  minimum changes
• Implemented for CIAO and Prism and used in the
  Demo

9
Qosket Component Performance

• Based on CCMPerf
• Component version of the distributed UAV software
  includes
• Functionality components (i.e., senders,
  distributors, receivers)
• Qosket components
• Two alternatives for sending imagery using
  components
• Event push, data pull (similar to the Prism
  model)
• Event push with image payload

Event push, Data pull Model
Event push with image payload
10
Modeling and Synthesis How We Constructed the
Demonstration
CADML model (one SimUAV visible)

• Assembly of the system using CADML
• Generated XML CAD file
• Transitioning to use PICML
• End-to-end QoS using DQME
• Used for documentation and design
• Code generation work in progress
• Application of MoBIES tools

DQME Modeling
CAD file (XML)
ltcomponentfile id"com-ScaleQosket"gt
ltfileinarchive name"ScaleQosket.csd"/gt lt/componen
tfilegt ltcomponentfile id"com-CropQosket"gt
ltfileinarchive name"CropQosket.csd"/gt lt/component
filegt
lthomeplacement id"a_ScaleQosketHome"gt
ltcomponentfileref idref"com-ScaleQosket"/gt
ltcomponentinstantiation id"a_ScaleQosket"/gt
lt/homeplacementgt lthomeplacement
id"a_DiffServQosketHome"gt ltcomponentfileref
idref"com-DiffServQosket"/gt ltcomponentinstantiat
ion id"a_DiffServQosket"/gt lt/homeplacementgt
11
Publications

• Joseph Loyall, Jianming Ye, Sandeep Neema, and
  Nagabhushan Mahadevan. Model-Based Design of
  End-to-End Quality of Service in a Multi-UAV
  Surveillance and Target Tracking Application.
  Second RTAS Workshop on Model-Driven Embedded
  Systems (MoDES '04), Toronto, Canada, May 25-28,
  2004.
• George T. Heineman and William T. Councill,
  Component-Based Software Engineering Putting the
  Pieces Together, Addison Wesley, June 2001.
• Jianming Ye, Joseph P. Loyall, Richard Shapiro,
  Sandeep Neema, N. Mahadevan, S. Abdelwahed, M.
  Koets,and W. Denise. A Model-Based Approach to
  Designing QoS Adaptive Applications. 2004.
  Submitted for publication.
• Praveen K. Sharma, Joseph P. Loyall, George T.
  Heineman, Richard E. Schantz, Richard Shapiro,
  Gary Duzan Component-Based Dynamic QoS
  Adaptations in Distributed Real-Time and Embedded
  Systems submitted to DOA

12
Summary

• We have developed a complex DRE application built
  using components
• Functional components, Qosket components and QoS
  Management components to provide
• Dynamic end-to-end mission-driven QoS management
• Time critical target engagement
• Combined USAF and Army operations
• Components assembled using CADML, DQME
• Qosket Components
• Key to end-to-end QoS Management
• Combines CIAO and QuO technology
• Modeling Tools
• Easy to assemble, reusable in different scenarios
• Minimal overhead for increased flexibility and
  control