1. OPEN GRID SERVICES ARCHITECTURE AND GLOBUS TOOLKIT 4
OGSA AND GT4

2. OPEN GRID SERVICES ARCHITECTURE AND GLOBUS TOOLKIT 4
OGSA AND GT4

3. INTRODUCTION GRID COMPUTING
GRID COMPUTING ENVIRONMENT IS EMERGING WITH IMPROVED CAPABILITIES & ADAPTABILITY WITH TRADITIONAL COMPUTING TECHNOLOGIES.

4. GRID SERVICES
GRID SERVICES
A SERVICE INTERFACE ASSOCIATED WITH A GRID RESOURCE IS A GRID SERVICE.
IN REAL TIME ENVIORNMENT VARIOUS GRID RESOURCES AND SERVICES INTERACT IN HETEROGENEOUS ENVIORNMENT.
DEFINED STANDARD FRAMEWORKS WILL HELP FOR EFFECTIVE IMPLEMENTATION OF GRID SERVICES.

5. GRID SERVICES CAN BE TRANSIENT.
A GRID SERVICE IS BASICALLY A WEB SERVICE WITH SOME ADDITIONS AND ADDRESSES TO VIRTUAL RESOURCES

6. A Service-Oriented Grid
Grid middleware services
Job-Submit Service
Registry Service
Advertise
Brokering Service
Notify
Virtualized resources
CPU Resource
Compute Service
Data Service
Application Service
Printer Service
May 10, 2006
Global Grid Forum -

7. GLOBAL GRID FORUM (GGF)
ORGANISATIONS FOR GRID STANDARDS
GLOBAL GRID FORUM (GGF)
OVERALL ARCHITECTURE FOR GRID COMPUTING OGSA
ORGANISATION FOR THE ADVANCEMENT OF STRUCTURED INFORMATION STANDARDS (OASIS)
INFORMATION STANDARDS MIDDLEWARE / WEB SERVICES / WEB SERVICES RESOURCE FRAMEWORK (WS-RF)
W3C
WORLD WIDE WEB CONSORTIUM

8. GRID SERVICES STANDARDS
GLOBAL GRID FORUM (GGF) DEVELOPED STANDARD INTERFACES, BEHAVIOURS FOR GRID APPLICATIONS BASED ON WEB SERVICES.
GGF INTRODUCES THE TERM GRID SERVICE AS AN EXTENDED WEB SERVICE THAT CONFORMS TO GGF OGSA FRAMEWORKS.

9. OPEN GRID SERVICES ARCHITECTURE (OGSA)
GLOBAL GRID FORUM (GGF) DEVELOPED OGSA FOR GRID SERVICES
OBJECTIVES:
MANAGE RESOURCES ACROSS DISTRIBUTED HETEROGENEOUS PLATFORMS.
DELIVER SEAMLESS QUALITY OF SERVICE.
PROVIDE COMMON BASE FOR AUTONOMIC MANAGEMENT SOLUTIONS.
DEFINE OPEN PUBLISHED INTERFACE.
EXPLOIT INDUSTRY-STANDARD INTEGRATION TECHNOLOGIES
WEB SERVICES, SOAP, XML
INTEGRATE WITH EXISTING IT RESOURCE.

10. KEY EMPHASIS FOR STANDAR-DISATION
GRID STANDARDS
KEY
EMPHASIS
FOR
STANDAR-DISATION
TO BRING SCALABLE VIRTUAL ENVIRONMENT WITH EXTENDED SERVICES FOR
RESOURCE MANAGEMENT
EXECUTION MANAGEMENT
DATA SERVICES
INFORMATION SERVICES
SECURITY MANAGEMENT
SELF MANAGEMENT

11. Web services foundation
OGSA Capabilities
Execution Management
Job description & submission
Scheduling
Resource provisioning
Data Services
Common access facilities
Efficient & reliable transport
Replication services
Resource Management
Discovery
Monitoring
Control
OGSA
Self-Management
Self-configuration
Self-optimization
Self-healing
Information Services
Registry
Notification
Logging/auditing
Security
Cross-organizational users
Trust nobody
Authorized access only
OGSA “profiles”
Web services foundation
May 10, 2006
Global Grid Forum -

12. KEY CAPABILITIES OF OGSA SERVICE MODEL
CREATION.
GLOBAL NAMING AND REFERENCES.
LIFETIME MANAGEMENT.
REGISTRATION AND DISCOVERY.
NOTIFICATION.
OGSA GRID SERVICES ALSO ADDRESS AUTHORIZATION, CONCURRENCY CONTROL AND MANAGIBILITY ASPECTS.

13. OGSA
GRID SERVICES CAN BE TRANSIENT.
A GRID SERVICE INSTANCE IS AN INSTATIATION OF A GRID SERVICE THAT CAN BE DYNAMICALLY CREATED AND EXPLICITLY DESTROYED.
A PERSISTENT GRID SERVICE THAT CAN CREATE A SERVICE INSTANCE IS CALLED A SERVICE FACTORY.
A CLIENT CAN REQUEST A FACTORY TO CREATE MANY SERVICE INSTANCES.
MULTIPLE CLIENTS CAN ACCESS THE SAME SERVICE INSTANCE.

14. OGSA
OGSA DEFINES WHAT INTERFACES ARE NEEDED, BUT DOES NOT SPECIFY IMPLEMENTATION DETAILS.
THERE ARE TWO STANDARDS AVAILABLE TO IMPLEMENT OGSA COMPLAINT GRID SERVICES
OPEN GRID SERVICES INFRASTRUCTURE (OGSI) GRID SERVICES
WEB SERVICES RESOURCE FRAMEWORK (WS-RF) GRID SERVICES

15. THIS LEAD TO WEB SERVICE RESOURCE FRAMEWORK (WS-RF) STANDARDS.
OGSI
OGSI WAS DESIGNED TO SPECIFY EXACTLY WHAT NEEDED TO BE IMPLEMENTED TO CONFORM TO OGSA.
IT WAS REALISED THAT OGSI IS TOO FAR FROM STANDARD WEB SERVICES TO BE ACCEPTABLE TO THE WEB SERVICE COMMUNITY.
THIS LEAD TO WEB SERVICE RESOURCE FRAMEWORK (WS-RF) STANDARDS.

16. STATELES AND STATEFUL
STATELESS
HAVING NO INFORMATION OF WHAT IS OCCURRED PREVIOUSLY .
EXAMPLE: WORLD WIDE WEB IS STATELESS, BECAUSE EACH REQUEST IS NEW WEB PAGE AND IT IS PROCESSED WITHOUT ANY KNOWLEDGE OF PREVIOUS PAGE REQUESTED.
STATEFUL
HAVING THE CAPACITY TO MAINTAIN STATE.

17. WEB SERVICES RESOURCE FRAMEWORK (WS-RF)
WS-RF IS A SET OF SPECIFICATIONS DEVELOPED BY ORGANISATION FOR THE ADVANCEMENT OF STRUCTURED INFORMATION STANDARDS (OASIS).
WS-RF SPECIFIES HOW WE CAN MAKE OUR WEB SERVICES STATEFUL WITH RESOURCES.
WS-RF IMPROVES WEB APPLICATION, MORE ADEQUATE TO GRID SERVICES.

18. Resource A CLIENT WEB SERVICE Resource B Resource C New value
WEB SERVICE WITH RESOURCES
RESOURCES
Resource A
CLIENT
Service Request
WEB SERVICE
Resource B
Service Response
Resource C
New value

19. WS-RF SPECIFICATIONS
WS-RESOURCEPROPERTIES
WS-RESOURCE PROPERTIES SPECIFIES HOW RESOURCE PROPERTIES ARE DEFINED AND ACCESSED.
WS-RESOURCELIFETIME
WS-RESOURCELIFETIME SUPPLIES BASIC MECHANISM TO MANAGE LIFECYCLE OF RESOURCES.
WS-SERVICEGROUP
WS-SERVICEGROUP SPECIFIES HOW EXACTLY WE SHOULD GOABOUT GROUPING OF SERVICES OR WS-RESOURCES TOGETHER.
WS-BASEFAULTS
WS-BASEFAULTS PROVIDE A STANDARD WAY OF REPORTING FAULTS WHEN SOMETHING GOES WRONG DURING A WS-SERVICE INVOCATION.
WS-ADDRESSING
SPECIFICATION THAT PROVIDES MECHANISM TO ADDRESS WEB SERVICES AND RESOURCES.

20. WEB SERVICE RESOURCE FRAMEWORK (WS-RF)
OGSA DEFINES COMMON, STANDARD AND OPEN ARCHITECTURE FOR GRID BASED APPLICATIONS. WHEREAS, WEB SERVICES RESOURCE FRAMEWORK, SPECIFIES HOW WE CAN MAKE OUR WEB SERVICES STATEFUL.
OSGA
WSRF
requires
specifies
STATEFUL WEB SERVICES
extends
WEB SERVICE

21. PROCESS DESCRIPTION INVOCATION TRANSPORT
WEB SERVICES ARCHITECTURE
PROCESS
DISCOVERY
DESCRIPTION
WSDL
INVOCATION
SOAP
TRANSPORT
HTTP

22. GLOBUS TOOLKIT 4
GLOBUS TOOLKIT WAS DEVELOPED TO SUPPORT SERVICE ORIENTED DISTRIBUTED COMPUTING APPLICATION AND INFRASTRUCTURES.
GLOBUS IS A COMMUNITY OF USERS AND DEVELOPERS WHO COLLABORATE ON THE USE AND DEVELOPMENT OF OPEN SOURCE SOFTWARE, AND ASSOCIATED DOCUMENTATION, FOR DISTRIBUTED COMPUTING, VIRTUAL ORGANISATION AND RESOURCE FEDERATION.
GLOBUS TOOLKIT IS A SET OF LIBRARIES AND PROGRAMS THAT ADDRESS COMMON PROBLEMS THAT OCCUR WHEN BUILDING DISTRIBUTED SYSTEM SERVICES AND APPLICATIONS.

23. GLOBUS TOOLKIT 4 (CONTD)
GLOBUS TOOLKIT SUPPORTS A SET OF SERVICE IMPLEMENTATIONS THAT ADDRESS RESOURCE MANAGEMENT, DATA MOVEMENT, SERVICE DISCOVERY.
GLOBUS TOOLKIT SUPPORTS WEB SERVICES IN JAVA, C AND PYTHON.

24. GLOBUS TOOLKIT INSTALLATION
GT 4 CAN BE DOWNLOADED FROM
GLOBUS TOOLKIT IS AVAILABLE IN THE FOLLOWING WAYS:
BINARY PACKAGE
FULL SOURCE PACKAGE

25. SOURCE PACKAGE NAME DESCRIPTION
LIST OF GLOBUS TOOLKIT 4 SOURCE PACKAGE
SOURCE PACKAGE NAME
DESCRIPTION
gt4.0.0-all-source-installer.tar.bz2
gt4.0.0-all-source-installer.tar.gz
SOURCE PACKAGES WITH ALL COMPONENTS
ws-core src.zip
ws-core src.tar.gz
SOURCE PACKAGES WITH ONLY JAVA WS CORE COMPONENTS

26. SOFTWARENAME RECOMMENDED VERSION
LIST OF SOFTWARE FOR GLOBUS TOOLKIT 4 INSTALLATION
SOFTWARENAME
RECOMMENDED VERSION
Java SDK
1.4.2 or higher
Apache Ant
1.5.1 or higher
PostgreSQL (or other JDBC compliant database)
7.1 or higher (if using PostgreSQL)

27. CLIENT GRAM File transfer Delegation Index Trigger Data Access
GLOBUS TOOLKIT ARCHITECTURE
JAVA CLIENT
‘C’ CLIENT
PYTHON CLIENT
JAVA CLIENT
‘C’ CLIENT
PYTON CLIENT
CLIENT
X.509
common
Credential = authentication
Interoperable WS-I-complaint SOAP messaging
Java Client
GRAM
File transfer
Delegation
Index
Trigger
Comm. Auth
Data Access
Telecontrol
Python Service
‘C’ Service
GridFTP
MyProxy
Replica Locn
Pre-WS GRAM
Java container
Python container
C container
SERVER
Python hosting, GT libraries
C Services using GT libraries
Java Services in Apache axis plus GT libraries & handlers

28. GLOBUS SERVICE COMPONENTS
We’ll start here.

29. Four different gt4 container configurations
GT4 ARCHITECTURE : GT CONTAINER
SET OF SERVICE COMPONENTS
Four different gt4 container configurations

30. GT4 TOOLS
. GT 4 ENABLES A RANGE OF TOOLS THAT PROVIDE HIGHER LEVEL CAPABILITIES TO THE NEEDS OF USER COMMUNITIES
EXECUTION MANAGEMENT TOOLS.
DATA MANAGEMENT TOOLS.
INTERFACE TOOLS.
SECURITY TOOLS.
MONITORING AND DISCOVERY TOOLS.

31. EXECUTION MANAGEMENT TOOLS IN GT4
EXECUTION MANAGEMENT TOOLS ARE CONCERNED WITH
INITIATION
MONITORING
MANAGEMENT
SCHEDULING
CO-ORDINATION OF REMOTE COMPUTATIONS.
GRID RESOURCE ALLOCATION AND MANAGEMENT (GRAM) IS A TOOL TO SUPPORT ABOVE FUNCTIONS.

32. DATA MANAGEMENT TOOLS IN GT 4
DATA MANAGEMENT TOOLS ARE ASSOCIATED WITH
LOCATION
TRANSFER AND
MANAGEMENT OF DISTRIBUTED DATA
SUPPORTED TOOLS FOR ABOVE PURPOSE ARE
GridFTP
REPLICA LOCATION SERVICE (RLS)
RELIABLE FILE TRANSFER (RFT)
DATA RELICATION SERVICE

33. THE FOLLOWING ARE SUPPORT TOOLS:
INTERFACE TOOLS IN GT 4
TO INVOKE, MONITOR AND MANAGE GRID RESOURCES, GT 4 SUPPORTS WITH USER INTERFACE TOOLS.
THE FOLLOWING ARE SUPPORT TOOLS:
JAVA CoG DESKTOP
WebMDS

34. SECURITY MECHANISM IN GLOBUS TOOLKIT
Basic security mechanisms are provided as libraries/classes and APIs.
Integrated with other GT tools and services
Integrated with many Grid community tools and services (and applications & systems)
A few stand-alone tools are also included.

35. SECURITY MECHANISM IN GLOBUS TOOLKIT
Standards based support for message level and transport level security
Standards based authorization (SAML) via Community Authorization Service (CAS) or callouts
Stand-alone delegation service
More authentication options
MyProxy, simpleCA, …

36. GT 4’S USE OF SECURITY STANDARD

37. MONITORING AND DISCOVERY TOOLS IN GT 4
MONITORING AND DISCOVERY TOOLS ARE ASSOCIATED WITH
OBTAINIG
DISTRIBUTING
INDEXING
ARCHIVING OF THE INFORMATION.
SUPPORT COMPONENTS FOR ABOVE PURPOSE
JAVA C
WS-NOTIFICATION INTERFACE

38. Host A Host B GRAM Adapter LSF Fork PBS RFT Service GridFTP Server
EXECUTION OF A JOB USING GRAM IN GT4
Host A
Host B
SOAP message
sudo
WS GRAM Client
WS GRAM Service
GRAM Adapter
Notifications
Delegated Credential
SOAP message
Delegation Service
RFT Request
LSF
Fork
Delegated Credential
PBS
RFT Service
GridFTP Protocol
Logical Resource Manager
Transfer information
GridFTP Server
GridFTP Server
Database
GridFTP Transfer

39. THANK YOU