1. Review of grid computing
B. Ramamurthy

2. Beginnings of The Grid
Beginnings of the grid in Search for Extra Terrestrial Intelligence project)
The Wow signal
B. Ramamurthy
4/25/2019

3. IT Issues Modernizing legacy systems Web-enabling business services
Automating business processes
Integration within organization
Data and application integration
Collaboration with outside organizations
Security, accountability, availability, reliability, …
B. Ramamurthy
4/25/2019

4. Grid Organizations Global Grid Forum (GGF): The Globus Alliance:
a community-initiated forum of thousands of individuals from industry and research leading the global standardization effort for grid computing. 
The Globus Alliance:
conducts research and development to create fundamental technologies behind the "Grid," which lets people share computing power, databases, and other on-line tools securely across corporate, institutional, and geographic boundaries without sacrificing local autonomy. 
Enterprise Grid Alliance (EGA):
EGA working groups have been proposed to address: (1) Reference model; (2) Component provisioning; (3) Data provisioning; (4) Utility accounting (5) Grid security.
GGF + EGA  OGF
Open Science Grid (OSG): ?
B. Ramamurthy
4/25/2019

5. Grid Technology Emerging enabling technology.
Natural evolution of distributed systems and the Internet.
Middleware supporting network of systems to facilitate sharing, standardization and openness.
Infrastructure and application model dealing with sharing of compute cycles, data, storage and other resources.
Promoted by NSF through its Network Middleware Initiative (NMI).
Publicized by prominent industries as on-demand computing, utility computing, etc.
Move towards delivering “computing” to masses similar to other utilities (electricity and voice communication).
B. Ramamurthy
4/25/2019

6. Types of Grid Batch-oriented High performance applications
High Throughput applications
Example: Condor
Service-Oriented
View all the resources and functions as services.
Build application models around services.
Anatomy of the grid
Physiology of the grid
It is this genre of grid that will move the grid technology towards business applications.
Example: Globus
CSE installation of GT3
B. Ramamurthy
4/25/2019

7. Service-oriented Standards
Open Grid Services Architecture (OGSA)
Open Grid Services Infrastructure (OGSI)
Globus Toolkit (GT3) is a reference implementation
In GT4, OGSI has been replaced by WSRF (Web services resource framework)
B. Ramamurthy
4/25/2019

8. OGSA, OGSI and WS From tutorial: Satomayor’s GT3 Tutorial
B. Ramamurthy
4/25/2019

9. Features of Grid Service
Logger object; Levels of logging:
Info, .. Warn, Error, Fatal
Filtering and redirecting to file, console
Provides
Standard
security
Provides notification of events …
Stores service properties and
States; for discovery, monitoring,
negotiations, etc.
Services with ability
to migrate
Permanent services such as naming service that
get activated and terminated with the container
B. Ramamurthy
4/25/2019

10. Application: Tax Return Filer
Registry
IRSService
HandleMap
IRSServcie
Factory
IRS TAX Filer
Hosting
Environment
EMPService
EMPServcie
EMPLOYEMENT
PerService
PERServcie
PERSONAl
BNKService
BNKServcie
BANK Hosting
TAX client
Application: Tax Return Filer
Concepts illustrated: Virtual organization (VO) called IRS/Tax Filer that brings together virtualized capabilities
of physical organizations of banking, personal profiles, and employment.
Grid service handle (GSH) and Grid service reference (GSR), registry and handlemap, discovery of services, index services, application of
notification, logging.
High trust computing and social imperative of grid.
B. Ramamurthy
4/25/2019

11. Questions to CK?
B. Ramamurthy
4/25/2019