Wireless%20Grid%20Computing

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Wireless Grid Computing

• A Prototype Wireless Grid
• Grant Gifford
• Mark Hempstead
• April 30, 2003

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Overview of Presentation

• Grid Computing
• Wireless Networking
• Building a small wireless grid
• Test Application
• Conclusions

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Purpose of the Project

• Study the collision of two emerging technologies
• Grid Computing
• Corporate research IBM, Sun
• RD Magazine top 100 technologies of 2002
• MIT Technology Review one of Ten Technologies
  that will change the world
• Wireless Networking
• Widespread prevalence, almost a commodity
• Develop a proof of concept wireless grid

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The Grid Problem

• Flexible, secure, coordinated resource sharing
  among dynamic collections of individuals,
  institutions, and resources
• From The Anatomy of the Grid Enabling Scalable
  Virtual Organizations
• Enable communities (virtual organizations) to
  share geographically distributed resources as
  they pursue common goals -- assuming the absence
  of
• central location,
• central control,
• omniscience,
• existing trust relationships.

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Grid Architecture
Information Service (GIIS - MDS)
Resource Allocation (GRAM)
Data Management (GFTP)
Security Layer (GSI)
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The Globus Toolkit

• Open source collection of services, APIs, and
  protocols to aid in grid development
• Developing industry-wide open grid services
  architecture standards (OGSA)
• Collaboration of industry, academic and
  government research organizations
• Grid developed using Globus Version 2.2

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Grid Installation Flow
Install OS
Box1 Client
Box2 Server
Install Network Interface
Install Globus Installer (GPT)
Wireless Medium
Install Simple CA
Install Server/Client Software
Box4 Server
Box3 Server
Sign Server/User Certificates
Configure services
Start Grid Services
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Wireless Background

• IEEE 802.11b
• Broadcast system
• Different medium than IEEE 802.3
• Alternation of senders
• Ad Hoc Networking
• Self-configuring
• Multi-hop

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Linux Installation

• Red Hat 7.3
• Open source
• Standard workstation installation
• Addition installations on Box1
• External Network access
• Configure standard 10/100 NIC
• FTP Server
• Locally accessed by project machines

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Wireless Installation

• Special tools for configuring wireless NICs
• IW Tools
• Compile wireless NIC driver
• ATMEL drivers (Linksys WUSB11 v2.6)
• Alter Linux system files to utilize the wireless
  NIC
• Modules.conf, ifcfg-eth0, .vnetrc

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Application Design

• A job that can be sectioned.
• Test different levels of grid use
• 2 node, 3 node
• Parallel, Sequential
• Want it to require a fair amount of resources to
  accomplish
• Want to see channel saturation

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Application Design (contd)
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Application Installation

• Transcode (box1)
• Split the AVI file into separate AVI chunks to
  distribute to servers
• MJPEGtools (box2, box3, box4)
• To separate the video and audio tracks of the AVI
• To compress tracks
• To recombine the compressed tracks

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Application Results
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Application Results (contd)
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Problems and Solutions

• Dead wireless card
• Issues implementing MDS
• Finding drivers and defining install procedure
  for wireless cards
• Backup system CD burner issues
• MJPEG tools install problems

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Conclusions

• The grid works!
• Objectives reached
• Effective throughput of wireless 47KBs
• Wireless more suitable for less data intensive
  applications
• Extensive research is still necessary to develop
  efficient wireless grids.

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Got Questions?
Special Thanks To Professor Chang, Professor
Morrison, George Preble, Warren Gagosian,
Bor-Rong Chen