BANNARI AMMAN INSTITUTE OF TECHNOLOGY SATHYAMANGALAM

Department of Information Technology

Class IV IT A&B

Subject Code 11I010

Subject GRID COMPUTING

Prepared By Arun Shalin L.V & Aiswarya Devi VJ

Time: 75 mins

Unit No. &

Lesson. No

(2/4)

1.

Content List: Naming and Change Management Recommendations

2.

Skills Addressed:

Reading, Questioning, Drawing mind map, Summarizing, Discussion, Drawing Diagrams,

Expressing orally and in writing.

3. Objectives:

1. To gain basic knowledge of OGSA 2. To gain the knowledge about Architecture, components and platform services in it

4. Lesson Links:

Concepts/ ideas/ formulae /definition/laws etc

5. Alpha Breathing : (1 Min)

The three steps for alpha breathing are

Breathe in

Breathe out

Hold (Repeat the three steps for 8 times)

6. Evocation and In-depth teaching:( 35-40 mins)

The OGSA Platform Components

The job of the OGSA is to build on the grid service specification (Open Grid Service

Infrastructure, or OGSI) to define architectures and standards for a set of "core grid

services" that are essential components to every grid. We are assuming that these coregrid

service components must be present in every OGSA-based interoperable GridComputing

framework for the best quality of control features. the basic OGSA architectural

organization can be classified into five layers:

native platform services and transport mechanisms

OGSA hosting environment

OGSA transport and security

OGSA infrastructure (OGSI)

OGSA basic services (meta-OS and domain services)

The above defined OGSA layers form the foundation for new high-level management

applications and middleware Grid solutions and new class of Grid applications.

Native Platform Services and Transport Mechanisms

The native platforms form the concrete resource-hosting environment. These platform scan

be host resources specific to operating systems or hardware components, and then ative

resource managers manage them. The transport mechanisms use existing networking

services transport protocols and standards.

OGSA Hosting Environment

We will cover in subsequent chapters exactly how the standard interface definitions

defined by the grid service specification allows for two services/resources interoperating

together. These definitions do not, however, address the portability of services

implementations. Portability across hosting environments still needs to be addressed by

both grid communities and other hosting environments, including J2EE or .NET. These

communities are working together on this, and solutions will be forthcoming over the next

relatively short period of time.

ore Networking Services Transport and Security

An OGSA standard does not define the specific networking services transport, nor the

security mechanisms in the specification. Instead, it assumes use of the platform-specific

transport and security at the runtime instance of operation. In other words, these properties

are defined as service binding properties, and they are dynamically bound to the native

networking services transport and security systems at runtime.

OGSA Infrastructure

The grid service specification developed within the OGSI working group has defined the

essential building block for distributed systems. This specification provides a common set

of behaviors and interfaces to discover a service, create service instance, service lifecycle

management, and subscribe to and deliver respective notifications.

OGSA Basic Services

Some of the most notable and interesting basic services are as follows:

Common Management Model (CMM)

Service domains

Distributed data access and replication

Policy

Security

Provisioning and resource management

Accounting/metering

Common distributed logging

Monitoring

Scheduling

7. Brain Activation: (2 mins)

Any one of the following activities like

Right brain activities

Solving puzzles

Brain GYM

Optical Illusions

Perpetual calendar recalling

8

Survey and Reading by students (18 mins.)

Textbook

Joshy Joseph and Craig Fallenstein, Grid Computing, Pearson Education, New

Delhi, 2004.

The Grid Computing Technological Viewpoints 115

Open Grid Services Architecture OGSA 117

OGSA Architecture and Goal 118

Some Sample Use Cases that Drive the OGSA 121

9.

Discussion: ( 9 mins)

The students will be asked to discuss the relevant topic among their team/other

team/Faculty. The students those who have not taken part will be noted and kindle them to

do.

10. Mind Map: (8 mins)

11. Gazing/Rote memory: (1 mins)

A long and fixed look at the Mind map by the students before doing the presentation.

12. Summary: (9 mins)

We understand the roles of grid computing and Organizations developing Grid

standards and the Global Grid Forum in this chapter

13. Assessment: (5-10 mins)

1. ____________ that are essential components to every grid a) business b) core grid services c) system d) company

2. The native platforms form the concrete resource-hosting ___________ a) infrastructures b) intra structure c) environment d) none

3. An _______standard does not define the specific networking services transport a) OGSA b) OASA c) OGSQ d) none

4. _____to the native networking services transport and security systems at runtime a) Bound b) Design

c) Collaboration d) all the above

5. OGSI working group has defined the essential building block for _____ a) distributed systems b) main frame c) pcs d) none

Two marks:

1. What are the major goals of OGSA?

2. What are the more specific goals of OGSA?

3. What are the main purposes of use cases defined by the OGSA group?

4. Name some representational use cases from OGSA architecture working group.

14. Learning outcomes:

The students can gain knowledge about the OGSA platforms, services and Environment

for hosting it.