1. Grid Computing
Unit I
Introduction

2. Information anytime anywhere!!!
support computation across administrative domains
Generally  virtualizing computing resources
Definition
Allows sharing and coordinated use of diverse resources in dynamic, distributed “virtual organizations”.

3. Electrical Power Grid Analogy
users (or electrical appliances) get access to electricity through wall sockets with no care or for where or how the electricity is actually generated.
“The power grid” links together power plants of many different kinds
The Grid
users (or client applications) gain access to computing resources) with little or no knowledge where those resources are located or what the underlying technologies, hardware, operating system, and so on
"the Grid" links together computing resources
(PCs, workstations, servers, storage elements) and provides the mechanism needed to access them.
Common for both: Infrastructure, pervasive, utility
Grid Computing

4. Types of computing(some)
Cloud Computing
Moving individual application server to a “cloud” of computers
Utility Computing 
virtualization
Distributed Computing
running a single calculation on multiple computers
Cluster Computing 
group of linked computers, working together
Peer to Peer computing
Sharing of computer resources and services by direct exchange between systems(peers).

5. Types of Grid Goals Enables Computational grid Data Grid Remote access
Aggregate processing power
Enables
Virtual organization
Dynamic resource sharing

6. First grid initiative Recently SETI@home project Telescience Project
Million volunteers can download a screensaver
Recently
Telescience Project
Remote access to powerful electron microscope [national centre for microscopy & imaging research-SanDiago]
project
proteins take certain shapes, called folds, and how that relates to what proteins do

7. Building Blocks
N/w
Computing nodes
storage

8. Downside?
Security
Project directors
Complexity
Standard protocol

9. Application Scientific research, oil and gas fields, banking and
education