Electrical and Computer Engineering Department

1

• Electrical and Computer Engineering Department 
• Fairfield University 
• MASTERS THESIS DEFENSE 
•  
• Project The Initium Remote Job Submission
  Screensaver
• By 
• Francisco Castellanos
• Advisor Professor Douglas A. Lyon, Ph.D.

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• Outline
• Overview of a grid system
• Problem statement
• Approach to solve the problem
• Execution
• Project Demonstration
• Conclusion

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What is grid computing?

• It is a parallel computing model

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Why use grid computing?

• It takes advantage networked computers
• It executes tasks in parallel
• It is FAST

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Task 1
Task 2
Network 1
Task 3
Task 4
Task ..
Network 2
Task n
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Basic Research Goal

• Make grid computing a little easier

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What is a screen saver?

• A program that wakes up when the computer is
  idle.
• A program that terminates when the computer is
  busy.

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Why use a screen saver?

• Screensavers are a minimal invasive technology
  that can be used to volunteer CPU cycles.
• Typically, computers are used between 40 and 60
  hours out of a 168-hour week. ( 35
  utilization).

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• Outline
• Overview of a grid system
• Problem statement
• Approach to solve the problem
• Execution
• Project Demonstration
• Conclusion

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Problem Statement

• Given a Network Of Workstations (NOW)
• Find a way of doing grid computing that is easier
• Subject to the constraints
• non-invasive process
• Portable solution

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The Initium RJS System
Compute Servers
Lookup Server
Web Server
Task 1
Task 2
Task 3
Task ..
Task n
Network
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Problem Statement

• Idleness detection
• Minimize intrusion into the desktop.
• Portable screensaver

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Lookup Server
User PC
Yes
Inactive
Invoke SS
Register with LUS
No
Invoke CS
No
PC is still Inactive
Terminate CS
Screensaver
Yes
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Lookup Server
Execute Job
Send Answer
CS
Yes
Jobs to execute
Send Job
No
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• Outline
• Overview of a grid system
• Problem statement
• Motivation
• Approach to solve the problem
• Execution
• Project Demonstration
• Conclusion

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Motivation

• Use otherwise idle resources
• Inspired by SETI
• A Java-based screen saver for grid computing is
  NEW.

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• Outline
• Overview of a grid system
• Problem statement
• Motivation
• Approach to solve the problem
• Execution
• Project Demonstration
• Conclusion

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Approach
User-PC quiet time detection
Intrusion Minimization
Screensaver Portability
Screensaver Deployment
Screensaver Integration with IRJS middleware
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• Outline
• Overview of a grid system
• Problem statement
• Motivation
• Approach to solve the problem
• Execution
• Project Demonstration
• Conclusion

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User-PC Inactivity Detection
User Inactivity
Processing
Idleness
User Activity

• This process is a platform-specific activity.
• SaverBeans Screensaver SDK framework, under the
  Java.net group.

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User-PC Quite Time Detection

• SaverBeans SDK
• Java-based framework.
• Provides native subroutines to invoke Java
  methods in the screensaver.

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User-PC Quite Time Detection

• public class RJSsaver extends SimpleScreensaver
  
• public void init()
• public void paint( Graphics g )
• public void destroy()

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User-PC Quite Time Detection

• public void init()
• iCount iCount 1
• if (iCount lt 2)
• startComputeServer()
• launchLogMonitor()

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User-PC Quite Time Detection
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User-PC Quite Time Detection
Lookup Server
User PC
Yes
Inactive
Invoke SS
Register with LUS
No
Invoke CS
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User-PC Quite Time Detection
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User-PC Quite Time Detection
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Approach
User-PC quiescence detection
Intrusion Minimization
Screensaver Portability
Screensaver Deployment
Screensaver Integration with IRJS middleware
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Intrusion Minimization
User Inactivity
Join the grid
Processing
Idleness
Processing Jobs
User Activity

• Resource restoration to its initial state.
• Cleanup and communication with LUS.

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Intrusion Minimization

• SaverBeans SDK destroy method
• protected void destroy()
• cal Calendar.getInstance()
• killFile.mkdir()
• System.out.println("CS Stoping at "
  cal.getTime().toString())

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Intrusion Minimization
CS 1
Task 1
CS 2
Task 2
CS 3
Task 3
CS 4
Task 4
CS ..
Task ..
CS n
Task n
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Intrusion Minimization

• Leasing Process

Send job
Processing Job
Available
Job Completion
Send signal
Dead
Available
Busy/Avail.
No response
Send response
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Approach
User-PC quiescence detection
Intrusion Minimization
Screensaver Portability
Screensaver Deployment
Screensaver Integration with IRJS middleware
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Screensaver Portability

• Macintosh Solution
• Creation of a Objective C program as the
  screensaver.
• Invokes Java Classes.

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Screensaver Portability

• (void)animateOneFrame
• if(i0)
• NSLog(_at_" First time   d      SS start now", i)
• //Call to java class to start CS
• NSClassFromString(_at_"RunCS")
• newWithSignature_at_"(Ljava/lang/String)",_at_"start"
  

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Screensaver Portability

• (void)stopAnimation
• //Call to java class to stop CS
  NSClassFromString(_at_"RunCS")
• newWithSignature_at_"(Ljava/lang/String)",_at_"stop"
  
• NSLog(_at_"SS  stop now d  ", i)

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Approach
User-PC quiescence detection
Intrusion Minimization
Screensaver Portability
Screensaver Deployment
Screensaver Integration with IRJS middleware
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Screensaver Deployment

• Involved
• Screensaver Installer
• Java Web Start
• Configuration

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Screensaver Deployment
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Screensaver Deployment

• Operating System Identification
• public static boolean isWindows(String str)
• if (isWindows())
• String os getOsName().toLowerCase()
  
• if (os.indexOf(str) gt -1) return
  true
• return false
• public static boolean isWindowsXp()
• return isWindows("xp")

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Screensaver Deployment

• Beam Over Screensaver resources
• public static void downloadScreenSaverJar(File
  outputJarFile, String urlStr) throws IOException
  
• URL screenSaverUrl getResourceUrl(urlStr)
• UrlUtils.getUrl(screenSaverUrl, outputJarFile)

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Screensaver Deployment

• Configuration
• Win Version sensitive directories
• For Windows 98 C/windows/system/.
• For Windows NT C/winnt/system/.
• For other version C/windows/sytem32/.
• Unix
• Xscreensaver Configuration User dir
• Mac
• Location. (/Library/Screensavers/)

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Screensaver Deployment
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Approach
User-PC quiescence detection
Intrusion Minimization
Screensaver Portability
Screensaver Deployment
Screensaver Integration with IRJS middleware
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Screensaver IRJS Integration

• Submitting Jobs to the IRJS System
• Written in Java
• Main() method in class to execute
• Independent of user input
• Do not use any GUI
• Deployed as Java Web Start
• Output is written to .jar file.

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Screensaver IRJS Integration

• public class FractalsJob_1
• public static void main(String args)
• Point from new Point(0, 0)
• Point to new Point(400, from.y 100)
• Utils.computeStrip(from, to,
  "Fractals_out1.ppm.jar")

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Screensaver IRJS Integration
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Screensaver IRJS Integration
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• Outline
• Overview of a grid system
• Problem statement
• Approach to solve the problem
• Execution
• Project Demonstration
• Conclusion

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• Outline
• Overview of a grid system
• Problem statement
• Approach to solve the problem
• Execution
• Project Demonstration
• Conclusion

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Conclusion
Experimental Results
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Conclusion
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Conclusion

• Future Work
• Mac implementation with SaverBeans
• Tasks-resource matching. Current first-come
  first-serve
• Improved interface to submit jobs to IRJS.
• Job partitioning. Current manual

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Q/A