This document guides one through the use of the Grid Application Toolkit (GAT), covering everything from high-level architecture to the details of installation and use of the toolkit. This document is primarily geared towards application developers who wish to ``grid-enable'' their applications but do not wish to scale the painful learning curve of current grid middleware.

• Contents
• Preface
  • Why GAT?
  • Organization of the User's Guide
  • Who You Are
  • GAT Versions
  • About the Examples
  • Conventions Used in the User's Guide
  • Request for Comments
  • GAT Installation
  • GAT Requirements
  
  
• Why GAT?
  • Why GAT?
  • What Can GAT Do?
    • File Management
    • FileStream Management
    • LogicalFile Management
    • Advertisable Management
    • Resource Management
    • Interprocess Communication
    • Job Management
    • Monitoring
  • Wait, There's More to GAT!
  
  
• Basic Grid Concepts
  • Grid
    • Parable of the Elephant and the Blind Men
    • The Elephant's Head
    • The Elephant's Ears
    • The Elephant's Tusks
    • The Elephant's Trunk
    • The Elephant's Foot
    • The Whole Elephant
  • Grid Protocols
    • WSDL
    • OGSA
    • OGSI
  • The Grid Computing Model
  • Grid Standards
    • How Standards are Developed
    • Selected Grid Standards
  
  
• Basic Web Concepts
  • Wonderful World Wide Web
  • URI's Relative and Absolute
    • Absolute URI's
    • Relative URI's
  • Security
    • T.N.S.T.A.A.F.L.
    • Can You Keep a Secret?
    • Don't you...anybody touch...This is my stuff!
    • Who are You?
  • HTTP, HTTPS, and Beyond
    • HTTP
    • HTTPS
  • XML and XML Schemas
    • XML
    • XML Schemas
  • Web Services
    • CGI, Servlets, and the Kitchen Sink Oh My!
    • ...and XML-RPC Oh No!
    • SOAP
    • WSDL
  
  
• GAT Object Model
  • C ain't Object Oriented
  • GAT Object Model
  • GAT Interface Model
  • Some Not So Useful Programs
    • Getting an Object's Type
    • Determining Object Equality
    • Cloning Objects
    • Converting Objects
    • Using an Object's Interface
  
  
• File Management
  • Files, Folders, and the Letter ``F''
  • The File Package
    • Creating and Destroying File Instances
    • Copying, Moving, and Deleting File Instances
    • Examining File Instances
  • Some Useful Programs
    • A Fancy-Pants cp
    • Wow Your Friends with mv
    • From rm to RM
    • A ls -l of sorts
  
  
• FileStream Management
  • Copy, Move, and Delete, but I How to Write!
  • The FileStream Package
    • Constructing and Destroying FileStream Instances
    • Reading from a FileStream Instance
    • Writing to a FileStream Instance
    • Seeking on a FileStream Instance
  • Some Useful Programs
    • From hexdump to gridhexdump in three easy steps!
    • A cp from the ground up
    • gridhexdump, theme and variation
  
  
• LogicalFile Management
  • The Shortest Distance Between Two Points...
  • The LogicalFile Package
    • Constructing and Destroying LogicalFile Instances
    • Adding and Removing File Instances
    • Replicating LogicalFile Instances
    • Examining LogicalFile Instances
  • Some Useful Programs
    • Put 'dat in da girdbag!
    • Form Dolly to griddolly
  
  
• Advert Management
  • So, where did I put my Keys?
  • The Advertisement Package
    • Constructing and Destroying AdvertService Instances
    • Adding Advertisables to an AdvertService
    • Deleting Advertisables from an AdvertService
    • Obtaining the Description of an Advertisable
    • Finding Advertisables
    • Getting or Deleting an Advertisable
    • Setting and Getting the Working Directory
  • Some Useful Programs
    • What is Big, Red, and Eats Rocks?
    • Who lives at 1600 Pennsylvania Avenue?
  
  
• Resource Management
  • The Resource Management Package
  • Finding Resources
  • Making Plans and Changing Your Mind
  • The Resource Management Package
    • Resource Descriptions
    • Resources
    • Resource Broker
    • Constructing and Destroying HardwareDescription Instances
    • Constructing and Destroying SoftwareResourceDescription Instances
    • Constructing and Destroying ResourceBroker Instances
    • Finding Resources
    • Reserving Resources
    • Canceling Reservations
  • Some Useful Programs
    • Find me something big and fast!
    • An Equal Opportunity Employer
  
  
• Interprocess Communication
  • Telephones of the Internet Age
    • Calling
    • Speaking and Listening
    • Hanging-Up
  • The Streaming Package
    • Constructing and Destroying Endpoint Instances
    • Listening on Endpoints
    • Advertising Endpoints
    • Connecting on Endpoints
    • Reading and Writing on Pipes
  • Some Useful Programs
    • A No So-Useful Echolalia Client and Server
  
  
• Job Management
  • Job Management
  • The Job Management Package
    • Resource Descriptions
    • Resource Broker
    • Jobs
    • Creating and Destroying SoftwareDescription Instances
    • Creating and Destroying JobDescription Instances
    • Obtaining and Destroying Job Instances
  • Obtaining the State of a Job Instance
  • Obtaining the JobID of a Job Instance
  • Obtaining the JobDescription of a Job Instance
  • Obtaining Information about a Job Instance
  • Un-Scheduling a Job Instance
  • Stoping a Job Instance
  • Checkpointing a Job Instance
  • Migrating a Job Instance
  • Cloning a Job Instance
  • Some Useful Programs
    • See GAT run. Run GAT, run
  
  
• Event System
  • Being Spyed On: A User's Guide
  • The Event Package
    • Creating a RequestListeners
    • Adding and Removing RequestListeners
    • Processing Requests
  
  
• Adaptors
  • So, you want to be in movies?
  • The Adaptor Interface
    • Registering Internal Data
    • Registering the CPI Destructor Function
    • Registering Object Functions
    • Registering Interface Functions
    • Registering Event Handlers
    • Registering the Completed CPI
  • Some Useful Programs
    • The Million Dollar cp
    • Waiting for the Big Checkpoint
  
  
• Appendix: GATTypes
• Appendix: GAT Primitive Types
• Appendix: GATResult Codes
  • Severity Code
  • Customer Code
  • Reserved Code
  • Facility Code
  • Facility Status Code
  • GATResult Macro's
  
  
• Appendix: GATPreferences
• Appendix: Regular Expressions
  • Brief History
  • Regular Expressions in Formal Language Theory
  • POSIX Regular Expression Syntax
  
  
• Appendix: GATTable
  • Creating and Destroying Table instances
  • Adding Key/Value Pairs
  • Removing Key/Value Pairs
  • Obtaining Values Corresponding to a Given Key
  • Obtaining a Table's Size
  • Obtaining All Keys
  
  
• Appendix: GATString
  • Creating and Destroying String Instances
  • Examining a String's Properties
  • Translating a String to a New Encoding
  • Comparing two Strings
  • Examining String Prefix and Suffix
  • Concatenating Strings
  • Examining Substrings of a String
  • Obtaining Substrings
  
  
• Appendix: Backus-Naur Form
• Appendix: POSIX Paths
• About this document ...