Transcript A Study on Grid Computing in Distributed Systems

A Study on Grid Computing
in Distributed Systems
Sudha Dhanabalan
DEFINITIONS
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A very large self-managing virtual computer
comprising of a large collection of
heterogeneous systems that share various
combinations of resources.
Flexible, secure, coordinated resource sharing
among dynamic collections of individuals,
institutions, and resource.
Model for solving massive problems by using a
huge cluster of computers in a distributed
system.
What can Grid computing do?
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Exploit underutilized resources
Make available virtual resources and
virtual organizations
Access to additional resources
Parallel CPU Capacity
Resource Balancing
Management of larger IT infrastructure
Resource Types in Grid System
• Computational Capacity
- Parallel execution on applications
• Storage
- Storage attached to processor
- Secondary storage
• Software and policies
- Application specific resources
Scheduling in Grid Systems
• Role of scheduling
- To achieve meaningful collaboration among
various domains in a Grid System
Types of Scheduling
- Normal , manual scheduling
- Scavenging grid systems
- Resource reserving
A Simple Grid
Building A Grid Architecture
The Components of the Grid System:
• Security
o The more resource sharing more need for
security, usually provided by GSI
• Availability
o Handling failure of components in the Grid
system
• Performance
o Workload management and scheduling
GRID MODELS
Grids can be classified in two ways:
• Based on the function
 Computational Grid
Aggregates the processing power from a
distributed collection of systems
 Data Grid
Providing secure access to the pools of data
aggregated from heterogeneous, distributed
systems
Based on Topology
• Intragrids
Basic set of grid services within an organization
single security provider and static resources
• Extragrids
Comprises of two or more intragrids with more than
two security providers and dynamic resources
• Intergrids
Resources are global and dynamic and so is the security
provider
Completed Projects
• Grid technology has made its own contribution
to many fields and thus has made possible many
projects which would have taken years or even
generations to complete. The completed Grid
projects are listed and explained briefly .
• WEB PERFORMANCE TESTING
- Real time scenario testing of web sites to
improve its quality
GENETIC RESEARCH
• Grid computing has been used in genetic
research to study the relationships between
DNA structures, thus identifying the causes
and cure for diseases
• Grid Technology was used in the “hidden
Markov Modeling” project, which initially was
used in speech recognition and later for
medical research
• Anthrax research Project
This goal of this project was to accelerate a
time-consuming step in the drug discovery
process. This project involved presenting a key
protein component of anthrax into the grid and
analyzing the molecules of drug.
• The Smallpox Project
Grid computing was used to screen millions of
potential anti-smallpox drugs against a molecule
target which was considered a potential drug
component in treatment of smallpox.
CURRENT PROJECTS
• The Human Proteome folding project
This is an ongoing project which is nearing
completion. This project aims at finding out
the structure of all the proteins in the
human body. The results of this research
can bring a turning point in new treatments
and cures
The Cancer Research Project
• This project involves screening variuos
molecules to find a drug for treatment of
cancer.
• This screening would take years for completion
if not form Grid technology.
• Each of us can become a part of this research
by signing in at www.worldcommunity.org. A
small software is downloaded in our computer
which runs this screening when our system in
idle.
SOME USEFUL LINKS
• http://www.gridcomputing.com/gridfaq.html
• http://www.globus.org/research/papers/anato
my.pdf
• http://www.globus.org/security/
• http://www.grid.org/projects/hpf/
QUESTIONS ?